Filed pursuant to Rule 424(b)(2)
 Registration Statement No. 333-229482​
PROSPECTUS SUPPLEMENT(To Prospectus dated February 12, 2019)
27,050,000 Shares
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Menlo Therapeutics Inc.
Common Stock
We are offering 27,050,000 shares of our common stock. Our common stock is listed on the Nasdaq Global Select Market under the symbol “MNLO.” On June 3, 2020, the last reported sales price of our common stock on the Nasdaq Global Select Market was $2.13 per share of common stock.
We are an “emerging growth company” under federal securities laws and therefore permitted to take advantage of certain reduced public company reporting requirements.
Investing in our common stock involves a high degree of risk. Before buying any shares, you should review carefully the risks and uncertainties described under the heading “Risk Factors” beginning on page S-5 of this prospectus supplement, on page 5 of the accompanying prospectus and under similar headings in the other documents that are incorporated by reference into this prospectus supplement.
Neither the Securities and Exchange Commission, or the SEC, nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus supplement or the accompanying prospectus. Any representation to the contrary is a criminal offense.
Per Share of
Common Stock
Total
Public offering price $ 1.850 $ 50,042,500
Underwriting discounts and commissions(1) $ 0.111 $ 3,002,550
Proceeds to Menlo Therapeutics Inc., before expenses $ 1.739 $ 47,039,950
(1)
The underwriters will also be reimbursed for certain expenses incurred in this offering. We refer you to “Underwriting” for additional details regarding underwriting compensation.
We have also granted the underwriters an option for a period of 30 days to purchase up to an additional 4,057,500 shares of our common stock on the same terms as set forth above. If the underwriters exercise the option in full, the total underwriting discounts and commissions payable by us will be $3,452,933, and the total proceeds to us, before expenses, will be $54,095,943.
Delivery of the common stock is expected to be made on or about June 9, 2020 only in book-entry form through the facilities of the Depository Trust Company.
Joint Book-Running Managers
CowenPiper Sandler
Lead Manager
LifeSci Capital
June 4, 2020.
 

 
TABLE OF CONTENTS
Prospectus Supplement
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Prospectus
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ABOUT THIS PROSPECTUS SUPPLEMENT
A registration statement on Form S-3 (File No. 333-229482) utilizing a shelf registration process relating to the securities described in this prospectus supplement was initially filed with the SEC, on February 1, 2019, and declared effective on February 12, 2019. Under this shelf registration statement, of which this offering is a part, we may, from time to time, sell up to an aggregate of  $150.0 million of our common stock. Prior to this offering, we sold approximately $4.9 million of our common stock under this shelf registration statement.
This document contains two parts. The first part is this prospectus supplement, which describes the terms of this offering of our common stock by us, and also adds, updates and changes information contained in the accompanying prospectus and the documents incorporated herein and therein by reference. The second part is the accompanying prospectus, which gives more general information about us, some of which may not apply to this offering. To the extent the information contained in this prospectus supplement differs or varies from the information contained in the accompanying prospectus or any document filed prior to the date of this prospectus supplement and incorporated herein by reference, the information in this prospectus supplement will supersede and govern. In addition, this prospectus supplement and the accompanying prospectus do not contain all of the information provided in the registration statement that we filed with the SEC. For further information about us, you should refer to that registration statement, which you can obtain from the SEC as described elsewhere in this prospectus supplement under “Where You Can Find More Information” and “Incorporation by Reference.”
You should rely only on the information contained in or incorporated by reference into this prospectus supplement and the accompanying prospectus. We and the underwriters have not authorized anyone to provide you with information that is different. No dealer, salesperson or other person is authorized to give any information or to represent anything not contained in this prospectus supplement and the accompanying prospectus. This prospectus supplement is not an offer to sell or solicitation of an offer to buy these securities in any circumstances under which the offer or solicitation is unlawful. We are offering to sell, and seeking offers to buy, our securities offered hereby only in jurisdictions where offers and sales are permitted. You should not assume that the information we have included in this prospectus supplement or the accompanying prospectus is accurate as of any date other than the date of this prospectus supplement or the accompanying prospectus, respectively, or that any information we have incorporated by reference is accurate as of any date other than the date of the document incorporated by reference, regardless of the time of delivery of this prospectus supplement or of any of our securities. Our business, financial condition, results of operations and prospects may have changed since those dates.
Unless otherwise mentioned or unless the context requires otherwise, all references in this prospectus supplement to:
“Menlo,”the “Company,” “our company,” the “Registrant,” “us,” “we” and “our” refer to Menlo Therapeutics Inc., a Delaware company, and its consolidated subsidiaries.
“Our common stock,” “common stock” and similar expressions refer to the Registrant’s common stock, par value $0.0001 per share.
“U.S. dollars” or “$” refer to United States Dollars.
“Exchange Act” refers to the Securities Exchange Act of 1934, as amended.
“Securities Act” refers to the Securities Act of 1933, as amended.
“Nasdaq” refers to the Nasdaq Global Select Market.
“SEC” refers to the U.S. Securities and Exchange Commission.
This prospectus supplement contains brand names or trademarks, which are the property of their respective owners. Solely for convenience, trademarks and trade names referred to in this prospectus supplement, the accompanying prospectus and the documents incorporated into each by reference may appear without the ® and TM symbols, but those references are not intended to indicate, in any way, that we will not assert, to the fullest extent under applicable law, our rights or that the applicable owner will not assert its rights to these trademarks and trade names.
 
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PROSPECTUS SUPPLEMENT SUMMARY
This summary highlights information contained elsewhere or incorporated by reference into this prospectus supplement and the accompanying prospectus. This summary does not contain all of the information that you should consider before investing in our securities. You should carefully read the entire prospectus supplement and the accompanying prospectus, including the “Risk Factors” sections, starting on page S-5 of this prospectus supplement and page 5 of the accompanying prospectus and under similar headings in the other documents that are incorporated by reference into this prospectus supplement, before making an investment decision.
Menlo Therapeutics Inc.
Overview
We are a specialty pharmaceutical company focused on developing and commercializing proprietary therapies to address unmet needs in dermatology. In March 2020, we combined with Foamix Pharmaceuticals Ltd., or Foamix, now our wholly-owned subsidiary. In January 2020, Foamix launched AMZEEQ® (minocycline) topical foam, 4%, or AMZEEQ, a once-daily topical antibiotic for the treatment of inflammatory lesions of non-nodular moderate-to-severe acne vulgaris in patients 9 years of age and older. On May 28, 2020, the Food and Drug Administration (“FDA”) approved ZILXI™ (minocycline) topical foam, 1.5% (formerly FMX103, “ZILXI”), for the treatment of inflammatory lesions of rosacea in adults. AMZEEQ and ZILXI are the first topical minocycline products approved by the FDA and serve as a springboard for our potential commercialization of additional innovative products in dermatology.
AMZEEQ and ZILXI utilize our proprietary Molecule Stabilizing Technology™, or MST, that we also use in the development of our product candidate FCD105, a topical foam comprising minocycline and adapalene for the treatment of acne vulgaris. On June 2, 2020, we announced positive topline results from our Phase II clinical trial, Study FX2016-40, to evaluate the efficacy and safety of FCD105. Pending a successful development program, we intend to file a new drug application (“NDA”) for FCD105 under the 505(b)(2) regulatory pathway, which is the same regulatory pathway we have pursued for AMZEEQ and ZILXI.
In addition to MST™ and our emulsion platform, which is a different technology, we have a number of proprietary delivery platforms in development that enable topical delivery of other active pharmaceutical ingredients, or APIs, each having unique pharmacological features and characteristics designed to keep the API stable when delivered and directed to the target site. We believe our MST vehicle and other topical delivery platforms may offer significant advantages over alternative delivery options, including emulsions, and may be suitable for multiple application sites across a range of conditions. We are also actively pursuing opportunities to out-license our product and product candidates to third parties for development and commercialization outside the United States.
Recent Developments
On June 2, 2020, we announced positive results from a Phase II clinical trial evaluating the preliminary safety and efficacy of FCD105 (3% minocycline / 0.3% adapalene foam), the first ever topical minocycline-based combination product, for the treatment of moderate-to-severe acne vulgaris. Study FX2016-40 enrolled 447 patients in the United States who were randomized to either FCD105 foam, 3% minocycline foam, 0.3% adapalene foam, or vehicle foam. We have begun preparations to conduct an End of Phase II meeting with the FDA before the end of 2020.
On May 28, 2020, the FDA approved ZILXI for the treatment of inflammatory lesions of rosacea in adults. ZILXI is the first minocycline product of any kind to be approved by the FDA for use in rosacea. We anticipate having ZILXI available for prescribing by the fourth quarter of 2020.
Other Information
Our legal and commercial name is Menlo Therapeutics Inc. We were incorporated in the State of Delaware in October 2011. On March 9, 2020 we completed a transaction with Foamix pursuant to which Foamix became a wholly-owned subsidiary of Menlo (the “Merger”).
 
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The conversion of the Contingent Stock Rights, or CSRs, issued in connection with the Merger on April 6, 2020, and the distribution of the shares of common stock in respect thereof, significantly increased the number of shares of common stock outstanding. As a result, we are considering seeking stockholder approval to effect a reverse stock split to reduce the number of shares of common stock outstanding to a number more consistent with other companies with similar market capitalizations. If we decide to pursue the reverse stock split or any other adjustment, we will seek the requisite stockholder approval and provide details about the proposed adjustment in a proxy statement to be filed in connection with seeking such approval.
Following the Merger, we continue to be an “emerging growth company,” as defined in Section 2(a) of the Securities Act and as modified by the JOBS Act and a “smaller reporting company,” as defined in Rule 12b-2 of the Exchange Act. As such, we are eligible to take advantage of certain exemptions from various reporting requirements, such as the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, and certain reduced or scaled disclosure requirements available to smaller reporting companies.
Our principal executive offices are located at 520 U.S. Highway 22, Suite 204, Bridgewater, NJ 08807. Our website is www.menlotherapeutics.com.
 
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THE OFFERING
Common stock offered by us
27,050,000 shares of common stock (31,107,500 shares of common stock if the underwriters exercise their option to purchase additional common stock in full).
Common stock to be outstanding after this offering
163,095,543 shares of common stock (167,153,043 shares of common stock if the underwriters exercise their option to purchase additional common stock in full).
Option to purchase additional shares
We have granted the underwriters an option for a period of 30 days after the date of the underwriting agreement to purchase up to an additional 4,057,500 shares of common stock from us, as described in “Underwriting.”
Use of proceeds
We estimate that the net proceeds from our issuance and sale of common stock in this offering will be approximately $46.6 million (or $53.6 million if the underwriters exercise their option to purchase additional shares from us in full), after deducting underwriting discounts and commissions and estimated offering expenses payable by us. We intend to use the net proceeds from this offering for (i) a Phase III clinical trial for FCD105 for the potential treatment of acne vulgaris, (ii) supporting the commercial launch of ZILXI, (iii) the continued development of our product candidates and (iv) the remainder, if any, for general corporate purposes.
Risk factors
This investment involves a high degree of risk. See “Risk Factors” beginning on page 5 of this prospectus supplement, page 5 of the accompanying prospectus and under similar headings in the other documents that are incorporated by reference herein for a discussion of the risks you should carefully consider before deciding to invest in our common stock.
Nasdaq symbol
“MNLO”
The number of shares of common stock to be outstanding after this offering is based on 136,045,543 shares of common stock outstanding as of March 31, 2020, after giving effect to the conversion of the CSRs issued in connection with the Merger on April 6, 2020, and excludes the following:

11,349,826 shares of common stock issuable upon the exercise of stock options with a weighted-average price of  $3.01 per share and 1,701,724 shares issuable upon the vesting of restricted stock units outstanding under the Menlo Therapeutics Inc. 2019 Equity Incentive Plan, the Foamix Pharmaceuticals Ltd. 2015 Israeli Share Incentive Plan and the Foamix Ltd. 2009 Israeli Share Option Plan;

3,515,982 shares of common stock issuable upon the exercise of stock options with a weighted-average price of  $5.34 per share and 222,590 shares issuable upon the vesting of restricted stock units outstanding under the Menlo Therapeutics Inc. 2011 Stock Incentive Plan, as amended, and the 2018 Omnibus Incentive Plan;

6,189,501 shares of common stock reserved for issuance pursuant to future awards under our 2019 Equity Incentive Plan;
 
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2,178,032 shares of common stock reserved for issuance pursuant to future awards under our 2018 Omnibus Incentive Plan;

9,371,258 shares of common stock reserved for future issuance under our 2019 Employee Share Purchase Plan; and

1,980,660 shares of common stock issuable upon the exercise of outstanding warrants with an exercise price of  $1.1607 per share.
 
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RISK FACTORS
Investing in our securities involves risks. Before making an investment decision, you should carefully consider the risks described below, on page 5 of the accompanying prospectus and under similar headings in the other documents that are incorporated by reference into this prospectus supplement or the accompanying prospectus, including in light of your particular investment objectives and financial circumstances. In addition to those risk factors, there may be additional risks and uncertainties of which management is not aware or focused on, or that management deems immaterial. Our business, financial condition or results of operations could be materially adversely affected by any of these risks. The trading price of our securities could decline due to any of these risks, and you may lose all or part of your investment.
Risks Related to this Offering
Purchasers in this offering will experience immediate and substantial dilution in the book value of their investment.
The public offering price of our common stock will be substantially higher than the pro forma net tangible book value per share of our common stock before giving effect to this offering. Accordingly, if you purchase our common stock in this offering, you will incur immediate substantial dilution of approximately $1.35 per share, representing the difference between the public offering price and our pro forma as adjusted net tangible book value as of March 31, 2020.
Furthermore, if outstanding options or warrants are exercised, you could experience further dilution. For a further description of the dilution that you will experience immediately after this offering, see the section in this prospectus supplement entitled “Dilution.”
A substantial number of common stock may be sold in the market following this offering, which may depress the market price for our common stock.
Issuances or sales of a substantial number of our common stock in the public market, or the perception that such issuances or sales may occur following this offering, could adversely affect the price of our common stock. A substantial majority of our outstanding common stock is, and the common stock sold in this offering upon issuance will be, freely tradable without restriction or further registration under the Securities Act. In addition, we have issued a substantial number of common stock in connection with the vesting of restricted stock units and the exercise of options to purchase our common stock pursuant to our incentive plans, and in the future we may issue additional shares in connection with the vesting of restricted stock units and the exercise of existing options, which are eligible for, or may become eligible for, unrestricted resale. Any sale or registration of such shares in the public market or otherwise could reduce the prevailing market price for our common stock, as well as make future sales of equity securities by us less attractive or even not feasible, thus limiting our capital resources.
We have broad discretion to determine how to use the funds raised in this offering, and may use them in ways that may not enhance our operating results or the price of our common stock.
Our management will have broad discretion over the use of proceeds from this offering, and we could spend the proceeds from this offering in ways our stockholders may not agree with or that do not yield a favorable return, if at all. We intend to use the net proceeds from this offering for (i) a Phase III clinical trial for FCD105 for the potential treatment of acne vulgaris, (ii) supporting the commercial launch of ZILXI, (iii) the continued development of our product candidates and (iv) the remainder, if any, for general corporate purposes. However, our use of these proceeds may differ substantially from our current plans. You will be relying on the judgment of our management with regard to the use of these net proceeds, and you will not have the opportunity, as part of your investment decision, to assess whether the proceeds are being used in ways with which you would agree. It is possible that the net proceeds will be invested in a way that does not yield a favorable, or any, return for us. The failure of our management to use such funds effectively could have a material adverse effect on our business, financial condition, operating results and cash flow. See “Use of Proceeds.”
 
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We may need additional financing in the future. We may be unable to obtain additional financing or if we obtain financing it may not be on terms favorable to us. You may lose your entire investment.
Based on our current plans, we believe our existing cash and investments, projected cash flows from revenues, along with cash generated from this offering, will be sufficient to fund our operating expense and capital requirements through the end of 2021, although these capital resources may be insufficient and we may need to raise funds in the future to meet future capital requirements. The amounts and timing of our actual expenditures may vary significantly depending on numerous factors, including the impact of the ongoing COVID-19 pandemic, our ability to successfully commercialize AMZEEQ, costs associated with the commercial launch of ZILXI and any unforeseen cash needs. If we are unable to obtain additional funds on terms favorable to us, we may be required to cease or reduce our operating activities. If we must cease or reduce our operating activities, you may lose your entire investment.
Our share price may be volatile.
The market price of our common stock has fluctuated in the past. Consequently, the current market price of our common stock may not be indicative of future market prices, and we may be unable to sustain or increase the value of an investment in our common stock.
We do not anticipate paying any dividends.
No dividends have been paid on our common stock. We do not intend to pay cash dividends on our common stock in the foreseeable future, and anticipate that profits, if any, generated from operations will be reinvested in our business. Any decision to pay dividends will depend upon our profitability at the time, cash available and other relevant factors.
Our actual financial position and results of operations may differ materially from the unaudited pro forma financial information incorporated by reference in this prospectus supplement.
The pro forma financial information incorporated by reference into this prospectus supplement is for illustrative purposes only and does not necessarily reflect the operating results or financial position that would have occurred if the Merger had been consummated on the dates indicated. Such pro forma financial information has been derived from the historical financial statements of Menlo and Foamix and certain adjustments and assumptions have been made regarding Menlo, after giving effect to the Merger. Such pro forma financial information does not give effect to, among other things, revenue synergies, operating efficiencies, cost savings, future adjustments related to integration or planned or unplanned restructuring activities, or future acquisitions or disposals not yet known or likely to occur.
In addition, the assumptions used in preparing such pro forma financial information may not prove to be accurate. Such assumptions can be adversely affected by known or unknown facts, risks and uncertainties, many of which are beyond our control. Other factors may also affect our financial condition or results of operations following the closing of the Merger.
Any material variance from the pro forma financial information incorporated by reference into this prospectus supplement may cause significant variations in the market price of our common stock following the closing of this offering. In view of these uncertainties, the pro forma financial information is for illustrative purposes and does not purport to project the future consolidated results of operations or consolidated financial condition for any future period or as of any future date. Such pro forma financial information represents historical results as if Menlo and Foamix had operated as a combined company and does not include anticipated future benefits from the Merger, such as those resulting from estimated synergies, and related costs, such as those costs expected to achieve certain benefits.
We face risks related to health epidemics and other widespread outbreaks of contagious disease, including the novel coronavirus, COVID-19, which have disrupted, and may continue to significantly disrupt, our operations and impact our financial results.
In December 2019, an outbreak of respiratory illness caused by a strain of novel coronavirus, COVID-19, began in China. As of April 2020, that outbreak has led to numerous confirmed cases
 
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worldwide, including in the Unites States and other countries where we or our business partners conduct operations. The outbreak and government measures taken in response have also had a significant impact, both direct and indirect, on businesses and commerce, including our own operations. The future progression of the outbreak and its effects on our business and operations are uncertain. Many patients have chosen not to visit or contact their healthcare providers which has limited new patient access and conversion. In response to the outbreak, we have taken certain steps to safeguard our employees, healthcare professionals and our other partners. For example, our sales force and marketing team were removed from the field and adopted remote and virtual sales activities, including tele-detailing, web-based speaker programs and virtual product education sessions, in order to meet patients’ needs. Recently, certain members of our sales force have resumed in-person meetings with healthcare professionals while taking appropriate precautions in locations that have eased restrictions. However, as a precautionary measure, such sales representatives are still prohibited from engaging in certain activities that were available before the pandemic. No assurance can be made that these sales tactics will be as effective as those used prior to the outbreak of COVID-19 or when the remainder of our sales force will be redeployed. If the activities of our sales force continue to be disrupted or such tele-detailing and virtual-based tactics are not accepted by healthcare professionals, we may generate less revenue than expected which would have a material adverse effect on our financial results as well as hinder our ability to satisfy certain covenants contained in our Credit Agreement.
We are currently unaware of any material disruptions to the supply of AMZEEQ and any material impact on our primary suppliers. We believe we have a sufficient amount of product in the trade and safety stock of our raw materials to support the current demand for AMZEEQ. While we are currently unaware of any material disruptions to our supply, our primary suppliers or our anticipated timelines for clinical results and other key milestones, we cannot guarantee that we will not experience such disruptions in the future as a result of the COVID-19 pandemic. If the outbreak of COVID-19 persists, we and our third-party contract manufacturers, contract research organizations and clinical sites may experience disruptions in supply of our product and product candidates and/or procuring items that are essential for our commercialization and research and development activities, including, for example, raw materials used in the manufacturing of our products and product candidates, medical and laboratory supplies used in our clinical trials or preclinical studies, in each case, for which there may be shortages because of ongoing efforts to address the outbreak. Any negative impact that the outbreak has on the ability of our suppliers to provide materials for our product and product candidates or on retaining patients in our clinical trials could disrupt our commercialization efforts and clinical trial activities, which could adversely affect our ability to earn revenue, obtain regulatory approval for and to commercialize our product candidates, increase our operating expenses, and have a material adverse effect on our financial results.
 
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FORWARD-LOOKING STATEMENTS
This prospectus supplement, the documents incorporated by reference herein and any accompanying prospectus may contain or incorporate statements that are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 and other U.S. federal securities laws.
These forward-looking statements include, but are not limited to, statements regarding the following matters:

our ability to successfully integrate our operations with those of Foamix;

our ability to successfully commercialize AMZEEQ and ZILXI and our other product candidates;

disruptions related to a pandemic, epidemic or outbreak of a contagious disease, such as COVID-19, on the ability of our suppliers to provide materials for our product and product candidates initiating and retaining patients in our clinical trials, distribution of our product and business sales execution, operating results and financial condition;

our ability to successfully complete, and receive favorable results in, clinical trials for our product candidates;

the timing of commencement of future non-clinical studies and clinical trials;

the regulatory approval process for our product candidates, including any delay or failure in obtaining requisite approvals;

the potential market size of treatments for any diseases and market adoption of our products, if approved or cleared for commercial use, by physicians and patients;

the timing, cost or other aspects of the commercialization of AMZEEQ, ZILXI and any other product candidates, if approved;

our ability to achieve favorable pricing for AMZEEQ, ZILXI and other product candidates;

third-party payor reimbursement for AMZEEQ, ZILXI and other product candidates;

developments and projections relating to our competitors and our industry, including competing drugs and therapies, particularly if we are unable to receive exclusivity;

risks related to our indebtedness, including our ability to comply with the covenants in our loan documents;

our intentions and our ability to establish collaborations or obtain additional funding;

the timing or likelihood of regulatory filings and approvals or clearances for our product candidates;

our ability to comply with various regulations applicable to our business;

our expectations regarding the commercial supply of AMZEEQ, ZILXI and other product candidates;

our ability to create intellectual property and the scope of protection we are able to establish and maintain for intellectual property rights covering our product candidates, including the projected terms of patent protection;

the timing, costs or results of litigation, including litigation to protect our intellectual property;

estimates of our expenses, future revenue, capital requirements, our needs for additional financing and our ability to obtain additional capital on acceptable terms or at all;

our ability to attract and retain key scientific or management personnel;

our defense of current and any future litigation that may be initiated against us;

our expectations regarding licensing, business transactions and strategic operations; and
 
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our future financial performance and liquidity.
In some cases, forward-looking statements are identified by terminology such as “may,” “will,” “could,” “should,” “expects,” “plans,” “anticipates,” “believes,” “intends,” “estimates,” “predicts,” “potential,”or “continue”or the negative of these terms or other comparable terminology. Such forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results or performance to differ materially from those projected. These statements are only current predictions and are subject to known and unknown risks, uncertainties, and other factors that may cause our or our industry’s actual results, levels of activity, performance or achievements to be materially different from those anticipated by the forward-looking statements. In addition, historic results of scientific research and clinical and preclinical trials do not guarantee that the conclusions of future research or trials would not be different, and historic results referred to in our most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q, may be interpreted differently in light of additional research and clinical and preclinical trial results. The forward-looking statements contained in this prospectus supplement are subject to risks and uncertainties, including those discussed under the heading “Risk Factors” beginning on page S-5 of this prospectus supplement and under similar headings in the other documents that are incorporated by reference into this prospectus supplement. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. Except as required by law, we are under no duty (and expressly disclaim any such obligation) to update or revise any of the forward-looking statements, whether as a result of new information, future events or otherwise, after the date of this prospectus supplement.
 
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USE OF PROCEEDS
We estimate that the net proceeds from our issuance and sale of 27,050,000 shares of our common stock in this offering will be approximately $46.6 million (or $53.6 million if the underwriters exercise their option to purchase additional common stock from us in full), after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us.
We intend to use the net proceeds from this offering for (i) a Phase III clinical trial for FCD105 for the potential treatment of acne vulgaris, (ii) supporting the commercial launch of ZILXI, (iii) the continued development of our product candidates and (iv) the remainder, if any, for general corporate purposes.
Based on our current plans, we believe our existing cash and investments, projected cash flows from revenues, along with the proceeds from this offering, will be sufficient to fund our operating expense and capital requirements through the end of 2021. We have based this estimate on assumptions that may prove to be wrong, and we could use our available capital resources sooner than we currently expect. Our expected use of net proceeds from this offering represents our intentions based on our present plans and business conditions, which could change as our plans and business conditions evolve. The amounts and timing of our actual expenditures will depend on numerous factors, including the progress of our clinical trials, the timing of regulatory submissions and the feedback from regulatory authorities and other development efforts and other factors described under “Risk Factors” in this prospectus supplement, the accompanying prospectus and under similar headings in the other documents that are incorporated by reference into this prospectus supplement, as well as the amount of cash used in our operations. We may find it necessary or advisable to use the net proceeds for other purposes, and we will have broad discretion in the application of the net proceeds. Pending our use of the net proceeds from this offering, we may temporarily invest the net proceeds in investment-grade, interest-bearing securities.
 
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DIVIDEND POLICY
We have never declared or paid dividends to our stockholders and we do not intend to pay dividends in the foreseeable future. We intend to reinvest any earnings in developing and expanding our business. Any future determination relating to our dividend policy will be at the discretion of our board of directors and will depend on a number of factors, including future earnings, our financial condition, operating results, contractual restrictions, capital requirements, business prospects, our strategic goals and plans to expand our business, applicable law and other factors that our board of directors may deem relevant.
 
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DILUTION
If you invest in our common stock, you will experience immediate and substantial dilution to the extent of the difference between the public offering price of our common stock and the pro forma net tangible book value per share of our common stock immediately after the offering.
Our historical net tangible book value per share is determined by dividing our total tangible assets, less total liabilities, by the actual number of shares of outstanding common stock. Our net tangible book value as of March 31, 2020 was $34.8 million, or $0.26 per share, based on the total number of shares of our common stock outstanding as of March 31, 2020, after giving effect to the conversion of the CSRs issued in connection with the Merger on April 6, 2020.
After giving effect to the sale of 27,050,000 shares of our common stock in this offering at the public offering price of  $1.85 per share, and after deducting underwriting discounts and commissions and other estimated offering expenses payable by us, our pro forma net tangible book value as of March 31, 2020 would have been approximately $81.4 million, or $0.50 per share. This amount represents an immediate increase in net tangible book value of  $0.24 per share as a result of this offering and an immediate dilution of approximately $1.35 per share to new investors.
The following table illustrates this dilution on a per share basis to new investors:
Public offering price per share
$ 1.85
Net tangible book value per share before this offering, as of March 31, 2020, after
giving effect to the conversion of the CSRs issued in connection with the Merger on
April 6, 2020 and before giving effect to this offering
$ 0.26
Increase in net tangible book value per share attributable to investors in this
offering
$ 0.24
Pro forma net tangible book value per share after offering
$ 0.50
Dilution in pro forma tangible book value per share to new investors
$ 1.35
If the underwriters exercise their option to purchase additional shares in full, and based on the public offering price of  $1.85 per share, and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us, the pro forma net tangible book value per share as of March 31, 2020 after this offering would be approximately $0.53 per share, the increase in the net tangible book value per share attributable to new investors would be approximately $0.27 per share and the dilution to new investors purchasing shares in this offering would be approximately $1.32 per share.
The above discussion and table are based on 136,045,543 shares of common stock outstanding as of March 31, 2020, after giving effect to the conversion of the CSRs issued in connection with the Merger on April 6, 2020, and excludes the following:

11,349,826 shares of common stock issuable upon the exercise of stock options with a weighted-average price of  $3.01 per share and 1,701,724 shares issuable upon the vesting of restricted stock units outstanding under the Menlo Therapeutics Inc. 2019 Equity Incentive Plan, the Foamix Pharmaceuticals Ltd. 2015 Israeli Share Incentive Plan and the Foamix Ltd. 2009 Israeli Share Option Plan;

3,515,982 shares of common stock issuable upon the exercise of stock options with a weighted-average price of  $5.34 per share and 222,590 shares issuable upon the vesting of restricted stock units outstanding under the Menlo Therapeutics Inc. 2011 Stock Incentive Plan, as amended, and the 2018 Omnibus Incentive Plan;

6,189,501 shares of common stock reserved for issuance pursuant to future awards under our 2019 Equity Incentive Plan;

2,178,032 shares of common stock reserved for issuance pursuant to future awards under our 2018 Omnibus Incentive Plan;
 
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9,371,258 shares of common stock reserved for future issuance under our 2019 Employee Share Purchase Plan; and

1,980,660 shares of common stock issuable upon the exercise of outstanding warrants with an exercise price of  $1.1607 per share.
 
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U.S. FEDERAL INCOME TAX CONSIDERATIONS FOR NON-U.S. HOLDERS
The following is a summary of U.S. federal income tax considerations generally applicable to non-U.S. Holders (as defined below) with respect to the purchase, ownership and disposition of shares of Menlo common stock issued pursuant to this offering and who hold such shares as a capital asset (generally, property held for investment) within the meaning of the Internal Revenue Code of 1986, as amended, or the Code. This summary is based on the Code, applicable Treasury regulations, administrative interpretations and court decisions, each as in effect as of the date of this document and all of which are subject to change, possibly with retroactive effect. This summary is not binding on the Internal Revenue Service, or the IRS, and there can be no assurance that the IRS or a court will agree with the conclusions stated herein. This summary is not a complete description of all the U.S. federal income tax considerations that may be relevant to a particular non-U.S. Holder subject to special rules, including, without limitation:

a partnership (or entity or arrangement treated as a partnership for U.S. federal income tax purposes) and partners therein;

a financial institution;

an insurance company;

a controlled foreign corporation;

a passive foreign investment company;

a tax-exempt entity or governmental organization;

a U.S. expatriate or former long-term resident of the United States;

a pass-through entity or an investor in such an entity;

a dealer or broker in securities or foreign currencies;

a trader in securities who elects to apply a mark-to-market method of accounting;

a stockholder who holds shares of Menlo common stock as part of a hedge, appreciated financial position, straddle, constructive sale or conversion transaction;

a stockholder who acquired his or her shares of Menlo common stock pursuant to the exercise of employee stock options or otherwise as compensation;

a stockholder deemed to hold shares of Menlo common stock under the constructive sale provisions of the Code; and

a stockholder who actually or constructively owns, or has owned, 10% or more of the stock of Menlo (by vote or value).
If an entity treated as a partnership for U.S. federal income tax purposes holds shares of Menlo common stock, the tax treatment of a partner in the partnership will generally depend upon the status of the partner and the activities of that partnership. A partner in a partnership that holds shares of Menlo common stock should consult its tax advisor.
Additionally, this discussion does not include any information with respect to U.S. federal estate, gift, and alternative minimum tax laws, the Medicare tax on certain net investment income, or any applicable state, local, or non-U.S. tax laws.
For purposes of this summary, a “non-U.S. Holder” refers to a beneficial owner of shares of Menlo common stock that is not, for U.S. federal income tax purposes, (i) an individual who is a citizen or resident of the United States; (ii) a corporation, or other entity taxable as a corporation for U.S. federal income tax purposes, created or organized in or under the laws of the United States, any state thereof or the District of Columbia; (iii) an estate the income of which is subject to U.S. federal income taxation regardless of its source; (iv) a trust (x) that is subject to the supervision of a court within the United States and the control of one or more U.S. persons or (y) that has a valid election in effect under applicable
 
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U.S. Treasury regulations to be treated as a U.S. person for U.S. federal income tax purposes; or (v) a partnership for U.S. federal income tax purposes.
Non-U.S. Holders should consult their tax advisors as to the specific U.S. federal income tax laws in light of their particular circumstances, as well as the applicability and effect of the alternative minimum tax, and any U.S. state, local, and non-U.S. income or other tax laws and of any changes in those laws.
Dividends and Distributions on Shares of Menlo Common Stock
As described in the section entitled “Dividend Policy,” we do not intend to pay dividends in the foreseeable future. However, if we do make distributions of cash or property on our common stock, such distribution will constitute a dividend for U.S. federal income tax purposes to the extent of Menlo’s current or accumulated earnings and profits as determined under the Code. Any distribution not constituting a dividend will be treated first as reducing a non-U.S. Holder’s basis in its shares of Menlo common stock and, to the extent it exceeds such basis, as gain from the disposition of shares of Menlo common stock, which would generally be treated as described under “—Sale or Other Disposition of Shares of Menlo Common Stock” below.
Subject to the discussions below under “—Foreign Account Tax Compliance Act,” “—Information Reporting and Backup Withholding,” and the discussion below on effectively connected income, dividends with respect to shares of Menlo common stock will generally be subject to United States withholding tax at a rate of 30% of the gross amount, unless a non-U.S. Holder is eligible for a reduced rate of withholding tax under an applicable income tax treaty and provides proper certification of its eligibility for such reduced rate (usually on an IRS Form W-8BEN or W-8BEN-E). A non-U.S. Holder that does not timely furnish the required documentation, but that qualifies for a reduced treaty rate, may obtain a refund of any excess amounts withheld by timely filing an appropriate claim for refund with the IRS. Non-U.S. Holders should consult their tax advisors regarding their entitlement to benefits under any applicable tax treaties.
Dividends paid to a Non-U.S. Holder that are effectively connected with such Non-U.S. Holder’s conduct of a trade or business within the United States (and, if certain income tax treaties apply, are attributable to a United States permanent establishment maintained by such non-U.S. Holder) will generally not be subject to U.S. withholding tax if such non-U.S. Holder complies with applicable certification and disclosure requirements (usually by providing an IRS Form W-8ECI). Instead, such dividends generally will be subject to U.S. federal income tax, net of certain deductions, at the same graduated individual or corporate rates applicable to United States persons. A non-U.S. Holder that is a corporation may also be subject to a “branch profits tax” at a rate of 30% (or such lower rate as may be specified by an applicable income tax treaty) with respect to effectively connected income. Non-U.S. Holders should consult their tax advisors regarding any applicable tax treaties that may provide for different rules.
Sale or Other Disposition of Shares of Menlo Common Stock
Subject to the discussion below under “—Information Reporting and Backup Withholding”, any gain realized on the disposition of shares of Menlo common stock by a non-U.S. Holder will generally not be subject to U.S. federal income tax unless:

such gain is “effectively connected” with a trade or business of the non-U.S. Holder in the United States (and, if required by an applicable income tax treaty, is attributable to the non-U.S. Holder’s permanent establishment in the United States);

the non-U.S. Holder is an individual who is present in the United States for 183 days or more in the taxable year of the exchange and certain other conditions are met; or

Shares of Menlo common stock constitute a U.S. real property interest by reason of Menlo’s status as a U.S. real property holding corporation, or a USRPHC, for U.S. federal income tax purposes.
Gain described in the first bullet point above generally will be subject to U.S. federal income tax on a net income basis at the regular graduated rates. A Non-U.S. Holder that is a corporation also may be
 
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subject to a branch profits tax at a rate of 30% (or such lower rate specified by an applicable income tax treaty) on such effectively connected gain, as adjusted for certain items.
Gain described in the second bullet point above will be subject to U.S. federal income tax at a rate of 30% (or such lower rate specified by an applicable income tax treaty), which may be offset by certain U.S. source capital losses of the Non-U.S. Holder (even though the individual is not considered a resident of the United States), provided the Non-U.S. Holder has timely filed U.S. federal income tax returns with respect to such losses.
With respect to the third bullet point above, Menlo believes it is currently not, and does not anticipate becoming, a USRPHC. However, because the determination of whether Menlo is a USRPHC depends on the fair market value of Menlo’s U.S. real property interests relative to the fair market value of its non-U.S. real property interests and other business assets, there can be no assurance Menlo currently is not a USRPHC or will not become one in the future. Even if Menlo is or was to become a USRPHC, gain arising from the sale or other taxable disposition by a non-U.S. Holder will not be subject to U.S. federal income tax if Menlo’s common stock is “regularly traded,” as defined by applicable Treasury Regulations, on an established securities market, and such non-U.S. Holder owned, actually and constructively, 5% or less of Menlo’s common stock throughout the shorter of the five-year period ending on the date of the sale or other taxable disposition or the non-U.S. Holder’s holding period.
Foreign Account Tax Compliance Act
Under the Foreign Account Tax Compliance Act, withholding will generally be required in certain circumstances on certain types of payments made to non-U.S. financial institutions and certain other non-U.S. entities. Specifically, a 30% withholding tax may be imposed on dividends on shares of Menlo common stock held by or through certain foreign financial institutions (including investment funds), unless such institution (i) enters into, and complies with, an agreement with the IRS to report, on an annual basis, information with respect to certain interests in, or accounts maintained by, the institution that are owned by certain U.S. persons or by certain non-U.S. entities that are wholly or partially owned by U.S. persons and to withhold on certain payments, or (ii) if required under an intergovernmental agreement between the United States and an applicable foreign country, reports such information to its local tax authority, which will exchange such information with the U.S. authorities. An intergovernmental agreement between the United States and an applicable foreign country may modify these requirements. Accordingly, the entity through which shares of Menlo common stock are held will affect the determination of whether such withholding is required. Similarly, dividends in respect of shares of Menlo common stock held by an investor that is a non-financial non-U.S. entity that does not qualify under certain exceptions will generally be subject to withholding at a rate of 30%, unless such entity either (i) certifies to the withholding agent that such entity does not have any “substantial United States owners” (as defined in the Code) or (ii) provides certain information regarding the entity’s “substantial United States owners,” which in turn will be required to be provided to the U.S. Department of the Treasury. Non-U.S. Holders should consult their tax advisors regarding the possible implications of these rules on their investment in shares of Menlo common stock.
Information Reporting and Backup Withholding
Menlo must report annually to the IRS and to each non-U.S. Holder the amount of distributions paid to such holder and the tax withheld with respect to such distributions, regardless of whether such distributions constitute a dividend or whether withholding was required. Copies of the information returns reporting such distributions and withholding may also be made available to the tax authorities in the country in which the non-U.S. Holder resides under the provisions of an applicable income tax treaty.
A non-U.S. Holder may be subject to backup withholding for dividends paid to such holder unless such holder certifies under penalty of perjury that it is a non-U.S. Holder (and the payor does not have actual knowledge or reason to know that such holder is a United States person as defined under the Code), or such holder otherwise establishes an exemption.
Information reporting and, depending on the circumstances, backup withholding will apply to the proceeds of a sale of shares of Menlo common stock within the United States or conducted through certain United States-related financial intermediaries, unless the beneficial owner certifies under penalty
 
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of perjury that it is a non-U.S. Holder (and the payor does not have actual knowledge or reason to know that such holder is a United States person as defined under the Code), or such holder otherwise establishes an exemption.
Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules may be refunded or credited against a non-U.S. Holder’s U.S. federal income tax liability, if any, provided that such non-U.S. Holder furnishes the required information to the IRS in a timely manner.
 
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UNDERWRITING
We and the underwriters for the offering named below have entered into an underwriting agreement with respect to the common stock being offered. Subject to the terms and conditions of the underwriting agreement, each underwriter has severally agreed to purchase from us the number of shares of our common stock set forth opposite its name below. Cowen and Company, LLC and Piper Sandler & Co. are the representatives of the underwriters.
Underwriter
Number of Shares
Cowen and Company, LLC
11,902,000
Piper Sandler & Co.
11,090,500
LifeSci Capital LLC
4,057,500
Total
27,050,000
The underwriting agreement provides that the obligations of the underwriters are subject to certain conditions precedent and that the underwriters have agreed, severally and not jointly, to purchase all of the shares sold under the underwriting agreement, if any, of these shares are purchased, other than those shares covered by the option to purchase additional shares described below. If an underwriter defaults, the underwriting agreement provides that the purchase commitments of the non-defaulting underwriters may be increased or the underwriting agreement may be terminated.
We have agreed to indemnify the underwriters against specified liabilities, including liabilities under the Securities Act of 1933, and to contribute to payments the underwriters may be required to make in respect thereof.
The underwriters are offering the shares, subject to prior sale, when, as and if issued to and accepted by them, subject to approval of legal matters by their counsel and other conditions specified in the underwriting agreement. The underwriters reserve the right to withdraw, cancel or modify offers to the public and to reject orders in whole or in part.
Option to Purchase Additional Shares.   We have granted to the underwriters an option to purchase up to additional shares of common stock at the public offering price, less the underwriting discount. This option is exercisable for a period of 30 days. To the extent that the underwriters exercise this option, the underwriters will purchase additional shares from us in approximately the same proportion as shown in the table above.
Discounts and Commissions.   The following table shows the public offering price, underwriting discount and commissions and proceeds, before expenses to us. These amounts are shown assuming both no exercise and full exercise of the underwriters’ option to purchase additional shares.
We estimate that the total expenses of the offering, excluding underwriting discounts and commissions, will be approximately $450,000 and are payable by us. We also have agreed to reimburse the underwriters for up to $10,000 for their FINRA counsel fee. In accordance with FINRA Rule 5110, this reimbursed fee is deemed underwriting compensation for this offering.
Total
Per Share
Without
Exercise
With Full
Exercise
Public offering price
$ 1.850 $ 50,042,500 $ 57,548,875
Underwriting discount
$ 0.111 $ 3,002,550 $ 3,452,933
Proceeds, before expenses, to us
$ 1.739 $ 47,039,950 $ 54,095,943
The underwriters propose to offer the shares of common stock to the public at the public offering price set forth on the cover of this prospectus. The underwriters may offer the shares of common stock to securities dealers at the public offering price less a concession not in excess of  $0.0666 per share. If all of the shares are not sold at the public offering price, the underwriters may change the offering price and other selling terms.
 
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Listing.   Our common stock is traded on the Nasdaq under the symbol “MNLO.”
Discretionary Accounts.   The underwriters do not intend to confirm sales of the shares to any accounts over which they have discretionary authority.
Stabilization.   In connection with this offering, the underwriters may engage in stabilizing transactions, syndicate covering transactions, penalty bids and purchases to cover positions created by short sales.

Stabilizing transactions permit bids to purchase shares of common stock so long as the stabilizing bids do not exceed a specified maximum, and are engaged in for the purpose of preventing or retarding a decline in the market price of the common stock while the offering is in progress.

Stabilization transactions involve sales by the underwriters of shares of common stock in excess of the number of shares the underwriters are obligated to purchase. This creates a syndicate short position which may be either a covered short position or a naked short position. In a covered short position, the number of shares stabilized by the underwriters is not greater than the number of shares that they may purchase in the option. In a naked short position, the number of shares involved is greater than the number of shares in the option. The underwriters may close out any short position by exercising their option and/or purchasing shares in the open market.

Syndicate covering transactions involve purchases of common stock in the open market after the distribution has been completed in order to cover syndicate short positions. In determining the source of shares to close out the short position, the underwriters will consider, among other things, the price of shares available for purchase in the open market as compared with the price at which they may purchase shares through exercise of the option. If the underwriters sell more shares than could be covered by exercise of the option and, therefore, have a naked short position, the position can be closed out only by buying shares in the open market. A naked short position is more likely to be created if the underwriters are concerned that after pricing there could be downward pressure on the price of the shares in the open market that could adversely affect investors who purchase in the offering.

Penalty bids permit the representatives to reclaim a selling concession from a syndicate member when the common stock originally sold by that syndicate member is purchased in stabilizing or syndicate covering transactions to cover syndicate short positions.
These stabilizing transactions, syndicate covering transactions and penalty bids may have the effect of raising or maintaining the market price of our common stock or preventing or retarding a decline in the market price of our common stock. As a result, the price of our common stock in the open market may be higher than it would otherwise be in the absence of these transactions. Neither we nor the underwriters make any representation or prediction as to the effect that the transactions described above may have on the price of our common stock. These transactions may be effected on the Nasdaq Stock Market, in the over-the-counter market or otherwise and, if commenced, may be discontinued at any time.
Passive Market Making.   In connection with this offering, underwriters and selling group members may engage in passive market making transactions in our common stock on the Nasdaq Stock Market in accordance with Rule 103 of Regulation M under the Securities Exchange Act of 1934, as amended, during a period before the commencement of offers or sales of common stock and extending through the completion of the distribution. A passive market maker must display its bid at a price not in excess of the highest independent bid of that security. However, if all independent bids are lowered below the passive market maker’s bid, such bid must then be lowered when specified purchase limits are exceeded.
Lock-Up Agreements.   Pursuant to certain “lock-up” agreements, we and our executive officers, directors, have agreed, subject to certain exceptions, not to offer, sell, assign, transfer, pledge, contract to sell, or otherwise dispose of or announce the intention to otherwise dispose of, or enter into any swap, hedge or similar agreement or arrangement that transfers, in whole or in part, the economic consequence or risk of ownership of, directly or indirectly, or make any demand or request or exercise
 
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any right with respect to the registration of, or file with the SEC a registration statement under the Securities Act relating to, any common stock or securities convertible into or exchangeable or exercisable for any common stock, or publicly disclose the intention to do any of the foregoing, without the prior written consent of Cowen and Company, LLC and Piper Sandler & Co., for a period of 90 days after the date of the pricing of the offering.
This lock-up provision applies to common stock and to securities convertible into or exchangeable or exercisable for common stock. The exceptions permit us, among other things and subject to restrictions, to: (a) issue common stock or options pursuant to employee benefit plans, qualified share option plans or other employee compensation plans existing on the date hereof, (b) issue common stock upon exercise of outstanding options or warrants (c) issue securities in connection with acquisitions or similar transactions in an amount not to exceed 5% of the outstanding stock as of the completion of this offering, or (d) file registration statements on Form S-8. The exceptions permit parties to the “lock-up” agreements, among other things and subject to restrictions, to: (a) make certain gifts, (b) if the party is a corporation, partnership, limited liability company or other business entity, make transfers to limited or general partners, members, shareholders or other equity holders in, the party, or to an affiliate of the party, if such transfer is not for value, provided that it shall be a requirement of any transfer pursuant to clauses (a) and (b) hereof that the transferee agrees to be bound by the terms of the restrictions contained in the “lock-up” agreements to the same extent as if the transferee were a party thereto and each party shall not be required and shall agree to not voluntarily make any filing or public announcement of the transfer or disposition, (c) exercise warrants or options or the vesting and maturity of RSUs granted under employee benefit plans, qualified share option plans or other employee compensation plans outstanding on the date hereof; provided, that the restrictions contained in the “lock-up” agreements shall apply to shares of common stock issued upon such exercise, conversion or maturity and (d) establish any contract, instruction or plan that satisfies all of the requirements of Rule 10b5-1 under the Exchange Act; provided, however, that no sales of shares of common stock or securities convertible into, or exchangeable or exercisable for, shares of common stock, shall be made pursuant to such plan during such 90 day period, provided, further that the Company is not required to, and will not voluntarily, report the establishment of such plan in any public report or filing with the SEC under the Exchange Act during such 90 day period. In addition, the lock-up provision will not restrict broker-dealers from engaging in market making and similar activities conducted in the ordinary course of their business.
Cowen and Company, LLC and Piper Sandler & Co., in their sole discretion, may release our common stock and other securities subject to the lock-up agreements described above in whole or in part at any time. When determining whether or not to release our common stock and other securities from lock-up agreements, Cowen and Company, LLC and Piper Sandler & Co. will consider, among other factors, the holder’s reasons for requesting the release, the number of shares for which the release is being requested and market conditions at the time of the request.
Canada.   The common stock may be sold only to purchasers purchasing, or deemed to be purchasing, as principal that are accredited investors, as defined in National Instrument 45-106 Prospectus Exemptions or subsection 73.3(1) of the Securities Act (Ontario), and are permitted clients, as defined in National Instrument 31-103 Registration Requirements, Exemptions and Ongoing Registrant Obligations. Any resale of the common stock must be made in accordance with an exemption from, or in a transaction not subject to, the prospectus requirements of applicable securities laws.
Securities legislation in certain provinces or territories of Canada may provide a purchaser with remedies for rescission or damages if this prospectus supplement (including any amendment thereto) contains a misrepresentation, provided that the remedies for rescission or damages are exercised by the purchaser within the time limit prescribed by the securities legislation of the purchaser’s province or territory. The purchaser should refer to any applicable provisions of the securities legislation of the purchaser’s province or territory for particulars of these rights or consult with a legal advisor.
Pursuant to section 3A.3 of National Instrument 33-105 Underwriting Conflicts (NI 33-105), the underwriters are not required to comply with the disclosure requirements of NI 33-105 regarding underwriter conflicts of interest in connection with this offering.
 
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Switzerland.   The securities will not be offered, directly or indirectly, to the public in Switzerland and this prospectus does not constitute a public offering prospectus as that term is understood pursuant to article 652a or 1156 of the Swiss Federal Code of Obligations.
European Economic Area and the United Kingdom.   In relation to each Member State of the European Economic Area and the United Kingdom (each, a “Member State”), no shares have been offered or will be offered pursuant to the offering to the public in that Member State prior to the publication of a prospectus in relation to the shares which has been approved by the competent authority in that Member State or, where appropriate, approved in another Member State and notified to the competent authority in that Member State, all in accordance with the Prospectus Regulation, except that offers of shares may be made to the public in that Member State at any time under the following exemptions under the Prospectus Regulation:
A.   to any legal entity which is a qualified investor as defined under the Prospectus Regulation;
B.   to fewer than 150 natural or legal persons (other than qualified investors as defined under the Prospectus Regulation), subject to obtaining the prior consent of the underwriters; or
C.   in any other circumstances falling within Article 1(4) of the Prospectus Regulation,
provided that no such offer of shares shall require the Company or any underwriter to publish a prospectus pursuant to Article 3 of the Prospectus Regulation or supplement a prospectus pursuant to Article 23 of the Prospectus Regulation and each person who initially acquires any shares or to whom any offer is made will be deemed to have represented, acknowledged and agreed to and with each of the underwriters and the Company that it is a “qualified investor” within the meaning of Article 2(e) of the Prospectus Regulation.
In the case of any shares being offered to a financial intermediary as that term is used in Prospectus Regulation, each such financial intermediary will be deemed to have represented, acknowledged and agreed that the shares acquired by it in the offer have not been acquired on a non-discretionary basis on behalf of, nor have they been acquired with a view to their offer or resale to, persons in circumstances which may give rise to an offer of any shares to the public other than their offer or resale in a Member State to qualified investors as so defined or in circumstances in which the prior consent of the underwriters have been obtained to each such proposed offer or resale.
For the purposes of this provision, the expression an “offer to the public” in relation to shares in any Member State means the communication in any form and by any means of sufficient information on the terms of the offer and any shares to be offered so as to enable an investor to decide to purchase or subscribe for any shares, and the expression “Prospectus Regulation” means Regulation (EU) 2017/1129.
References to the Prospectus Regulation includes, in relation to the United Kingdom, the Prospectus Regulation as it forms part of the United Kingdom domestic law by virtue of the European Union (Withdrawal) Act of 2018.
United Kingdom.   In addition, in the United Kingdom, this document is being distributed only to, and is directed only at, and any offer subsequently made may only be directed at persons who are “qualified investors” (as defined in the Prospectus Regulation) (i) who have professional experience in matters relating to investments falling within Article 19 (5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the “Order”) and/or (ii) who are high net worth companies (or persons to whom it may otherwise be lawfully communicated) falling within Article 49(2)(a) to (d) of the Order and/or (iii) to whom it may otherwise be lawfully communicated (all such persons together being referred to as “relevant persons”) in circumstances which have not resulted and will not result in an offer to the public of the shares in the United Kingdom within the meaning of the Financial Services and Markets Act 2000.
Any person in the United Kingdom that is not a relevant person should not act or rely on the information included in this document or use it as basis for taking any action. In the United Kingdom, any investment or investment activity that this document relates to may be made or taken exclusively by relevant persons.
 
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Hong Kong.   The shares have not been offered or sold and will not be offered or sold in Hong Kong, by means of any document, other than (a) to “professional investors” as defined in the Securities and Futures Ordinance (Cap. 571 of the Laws of Hong Kong) (the “SFO”) of Hong Kong and any rules made thereunder; or (b) in other circumstances which do not result in the document being a “prospectus” as defined in the Companies (Winding Up and Miscellaneous Provisions) Ordinance (Cap. 32) of Hong Kong) (the “CO”), or which do not constitute an offer to the public within the meaning of the CO. No advertisement, invitation or document relating to the shares has been or may be issued or has been or may be in the possession of any person for the purposes of issue, whether in Hong Kong or elsewhere, which is directed at, or the contents of which are likely to be accessed or read by, the public of Hong Kong (except if permitted to do so under the securities laws of Hong Kong) other than with respect to shares which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” as defined in the SFO and any rules made thereunder.
Singapore.   Each underwriter has acknowledged that this prospectus has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, each underwriter has represented and agreed that it has not offered or sold any shares or caused the shares to be made the subject of an invitation for subscription or purchase and will not offer or sell any shares or cause the shares to be made the subject of an invitation for subscription or purchase, and has not circulated or distributed, nor will it circulate or distribute, this prospectus or any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the shares, whether directly or indirectly, to any person in Singapore other than:
A.   to an institutional investor (as defined in Section 4A of the Securities and Futures Act (Chapter 289) of Singapore, as modified or amended from time to time (the “SFA”)) pursuant to Section 274 of the SFA;
B.   to a relevant person (as defined in Section 275(2) of the SFA) pursuant to Section 275(1) of the SFA, or any person pursuant to Section 275(1A) of the SFA, and in accordance with the conditions specified in Section 275 of the SFA; or
C.   otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA.
Where the shares are subscribed or purchased under Section 275 of the SFA by a relevant person which is:
A.   a corporation (which is not an accredited investor (as defined in Section 4A of the SFA)) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or
B.   a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary of the trust is an individual who is an accredited investor,
securities or securities-based derivatives contracts (each term as defined in Section 2(1) of the SFA) of that corporation or the beneficiaries’ rights and interest (however described) in that trust shall not be transferred within six months after that corporation or that trust has acquired the shares pursuant to an offer made under Section 275 of the SFA except:
(i)
to an institutional investor or to a relevant person, or to any person arising from an offer referred to in Section 275(1A) or Section 276(4)(i)(B) of the SFA;
(ii)
where no consideration is or will be given for the transfer;
(iii)
where the transfer is by operation of law;
(iv)
as specified in Section 276(7) of the SFA; or
(v)
as specified in Regulation 37A of the Securities and Futures (Offers of Investments) (Securities and Securities-based Derivatives Contracts) Regulations 2018.
Singapore SFA Product Classification—In connection with Section 309B of the SFA and the CMP Regulations 2018, unless otherwise specified before an offer of shares, we have determined, and hereby notify all relevant persons (as defined in Section 309 A(1) of the SFA), that the shares are “prescribed capital markets products” (as defined in the CMP Regulations 2018) and Excluded Investment Products (as defined in MAS Notice SFA 04-N12: Notice on the Sale of Investment Products and MAS Notice FAA-N16: Notice on Recommendations on Investment Products).
 
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Israel.   In the State of Israel this prospectus shall not be regarded as an offer to the public to purchase shares of common stock under the Israeli Securities Law, 5728 – 1968, which requires a prospectus to be published and authorized by the Israel Securities Authority, if it complies with certain provisions of Section 15 of the Israeli Securities Law, 5728 – 1968, including, inter alia, if: (i) the offer is made, distributed or directed to not more than 35 investors, subject to certain conditions (the “Addressed Investors”); or (ii) the offer is made, distributed or directed to certain qualified investors defined in the First Addendum of the Israeli Securities Law, 5728 – 1968, subject to certain conditions (the “Qualified Investors”). The Qualified Investors shall not be taken into account in the count of the Addressed Investors and may be offered to purchase securities in addition to the 35 Addressed Investors. The company has not and will not take any action that would require it to publish a prospectus in accordance with and subject to the Israeli Securities Law, 5728 – 1968. We have not and will not distribute this prospectus or make, distribute or direct an offer to subscribe for our common stock to any person within the State of Israel, other than to Qualified Investors and up to 35 Addressed Investors.
Qualified Investors may have to submit written evidence that they meet the definitions set out in of the First Addendum to the Israeli Securities Law, 5728 – 1968. In particular, we may request, as a condition to be offered common stock, that Qualified Investors will each represent, warrant and certify to us and/or to anyone acting on our behalf: (i) that it is an investor falling within one of the categories listed in the First Addendum to the Israeli Securities Law, 5728 – 1968; (ii) which of the categories listed in the First Addendum to the Israeli Securities Law, 5728 – 1968 regarding Qualified Investors is applicable to it; (iii) that it will abide by all provisions set forth in the Israeli Securities Law, 5728 – 1968 and the regulations promulgated thereunder in connection with the offer to be issued common stock; (iv) that the shares of common stock that it will be issued are, subject to exemptions available under the Israeli Securities Law, 5728 – 1968: (a) for its own account; (b) for investment purposes only; and (c) not issued with a view to resale within the State of Israel, other than in accordance with the provisions of the Israeli Securities Law, 5728 – 1968; and (v) that it is willing to provide further evidence of its Qualified Investor status. Addressed Investors may have to submit written evidence in respect of their identity and may have to sign and submit a declaration containing, inter alia, the Addressed Investor’s name, address and passport number or Israeli identification number.
We have not authorized and do not authorize the making of any offer of securities through any financial intermediary on our behalf, other than offers made by the underwriters and their respective affiliates, with a view to the final placement of the securities as contemplated in this document. Accordingly, no purchaser of the shares, other than the underwriters, is authorized to make any further offer of shares on our behalf or on behalf of the underwriters.
Electronic Offer, Sale and Distribution of Shares.   A prospectus in electronic format may be made available on the websites maintained by one or more of the underwriters or selling group members, if any, participating in this offering and one or more of the underwriters participating in this offering may distribute prospectuses electronically. The representatives may agree to allocate a number of shares to underwriters and selling group members for sale to their online brokerage account holders. Internet distributions will be allocated by the underwriters and selling group members that will make internet distributions on the same basis as other allocations. Other than the prospectus in electronic format, the information on these websites is not part of this prospectus or the registration statement of which this prospectus forms a part, has not been approved or endorsed by us or any underwriter in its capacity as underwriter, and should not be relied upon by investors.
Other Relationships.   The underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include sales and trading, commercial and investment banking, advisory, investment management, investment research, principal investment, hedging, market making, brokerage and other financial and non-financial activities and services. Certain of the underwriters and their respective affiliates have provided, and may in the future provide, a variety of these services to the Company and to persons and entities with relationships with the Company, for which they received or will receive customary fees and expenses.
In the ordinary course of their various business activities, the underwriters and their respective affiliates, officers, directors and employees may purchase, sell or hold a broad array of investments and actively trade securities, derivatives, loans, commodities, currencies, credit default swaps and other
 
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financial instruments for their own account and for the accounts of their customers, and such investment and trading activities may involve or relate to assets, securities and/or instruments of the Company (directly, as collateral securing other obligations or otherwise) and/or persons and entities with relationships with the Company. The underwriters and their respective affiliates may also communicate independent investment recommendations, market color or trading ideas and/or publish or express independent research views in respect of such assets, securities or instruments and may at any time hold, or recommend to clients that they should acquire, long and/or short positions in such assets, securities and instruments.
 
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LEGAL MATTERS
The validity of our securities will be passed upon by Skadden, Arps, Slate, Meagher & Flom LLP, New York, New York. Certain legal matters in connection with this offering will be passed upon for the underwriters by Latham & Watkins, LLP, New York, New York, with respect to U.S. federal law.
EXPERTS
The financial statements of Menlo Therapeutics Inc. as of December 31, 2019 and 2018 and for each of the years in the three year period ending December 31, 2019, have been incorporated by reference herein in reliance upon the report of Mayer Hoffman McCann P.C., independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing in giving said reports.
The audited historical financial statements of Foamix Pharmaceuticals Ltd. included in Exhibit 99.1 of Menlo Therapeutics Inc.’s Current Report on Form 8-K/A dated May 7, 2020 have been so incorporated in reliance on the report of Kesselman & Kesselman, Certified Public Accountants (Isr.), a member firm of PricewaterhouseCoopers International Limited, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.
 
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WHERE YOU CAN FIND MORE INFORMATION
We have filed with the SEC a registration statement on Form S-3, of which this prospectus supplement is part, with respect to the common stock that we will offer. This prospectus supplement and any accompanying prospectus do not contain all the information contained in the registration statement, including its exhibits and schedules. You should refer to the registration statement, including the exhibits and schedules, for further information about us and the common stock we may offer. Statements we make in this prospectus supplement and any accompanying prospectus about certain contracts or other documents are not necessarily complete. When we make such statements, we refer you to the copies of the contracts or documents that are filed as exhibits to the registration statement, because those statements are qualified in all respects by reference to those exhibits. The registration statement, including exhibits and schedules, is on file at the office of the SEC and may be inspected without charge.
We file annual, quarterly and current reports, proxy statements and other information with the SEC under the Exchange Act. Our SEC filings are available to the public at the SEC’s website at www.sec.gov.
INCORPORATION BY REFERENCE
The SEC allows us to “incorporate by reference” into this prospectus supplement the information in documents we file with it. This means that we can disclose important information to you by referring you to those documents. Each document incorporated by reference is current only as of the date of such document, and the incorporation by reference of such documents shall not create any implication that there has been no change in our affairs since the date thereof or that the information contained therein is current as of any time subsequent to its date. The information incorporated by reference is considered to be a part of this prospectus supplement and should be read with the same care. When we update the information contained in documents that have been incorporated by reference by making future filings with the SEC, the information incorporated by reference in this prospectus supplement is considered to be automatically updated and superseded. In other words, in the case of a conflict or inconsistency between information contained in this prospectus supplement and information incorporated by reference into this prospectus supplement, you should rely on the information contained in the document that was filed later.
Menlo




Foamix

All documents filed by us pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus supplement and before the date of the offering of all securities covered by this prospectus supplement also shall be deemed to be incorporated herein by reference. We are not, however, incorporating by reference any documents or portions thereof that are not deemed “filed”with the SEC, including any information furnished pursuant to Items 2.02 or 7.01 of Form 8-K.
 
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If requested, we will provide to each person, including any beneficial owner, to whom a prospectus supplement and accompanying prospectus is delivered, a copy of any or all of the information that has been incorporated by reference in the prospectus supplement and accompanying prospectus but not delivered with the prospectus supplement and accompanying prospectus. Exhibits to the filings will not be sent, however, unless those exhibits have specifically been incorporated by reference into such documents. To obtain a copy of these filings at no cost, you may write or telephone us at the following address:
Menlo Therapeutics Inc.
520 U.S. Highway 22, Suite 204
Bridgewater, New Jersey 08807
Attn: General Counsel
 
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PROSPECTUS
[MISSING IMAGE: LG_MENLOTHERAPEUTICS-4CLR.JPG]
$150,000,000
Common Stock, Preferred Stock, Debt Securities,
Warrants, Purchase Contracts, Units
We may offer and sell up to $150,000,000 in the aggregate of the securities identified above from time to time in one or more offerings. This prospectus provides you with a general description of the securities.
Each time we offer and sell securities, we will provide a supplement to this prospectus that contains specific information about the offering and the amounts, prices and terms of the securities. The supplement may also add, update or change information contained in this prospectus with respect to that offering. You should carefully read this prospectus and the applicable prospectus supplement before you invest in any of our securities.
We may offer and sell the securities described in this prospectus and any prospectus supplement to or through one or more underwriters, dealers and agents, or directly to purchasers, or through a combination of these methods. If any underwriters, dealers or agents are involved in the sale of any of the securities, their names and any applicable purchase price, fee, commission or discount arrangement between or among them will be set forth, or will be calculable from the information set forth, in the applicable prospectus supplement. See the sections of this prospectus entitled “About this Prospectus” and “Plan of Distribution” for more information. No securities may be sold without delivery of this prospectus and the applicable prospectus supplement describing the method and terms of the offering of such securities.
INVESTING IN OUR SECURITIES INVOLVES RISKS. SEE THE “RISK FACTORS” ON PAGE 5 OF THIS PROSPECTUS AND ANY SIMILAR SECTION CONTAINED IN THE APPLICABLE PROSPECTUS SUPPLEMENT CONCERNING FACTORS YOU SHOULD CONSIDER BEFORE INVESTING IN OUR SECURITIES.
Our common stock is listed on the Nasdaq Global Select Market under the symbol “MNLO.” On January 31, 2019, the last reported sale price of our common stock on the Nasdaq Global Select Market was $5.38 per share.
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.
The date of this prospectus is February 12, 2019.

 
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ABOUT THIS PROSPECTUS
This prospectus is part of a registration statement that we filed with the U.S. Securities and Exchange Commission, or the SEC, using a “shelf” registration process. By using a shelf registration statement, we may sell securities from time to time and in one or more offerings up to a total dollar amount of  $150,000,000 as described in this prospectus. Each time that we offer and sell securities, we will provide a prospectus supplement to this prospectus that contains specific information about the securities being offered and sold and the specific terms of that offering. We may also authorize one or more free writing prospectuses to be provided to you that may contain material information relating to these offerings. The prospectus supplement or free writing prospectus may also add, update or change information contained in this prospectus with respect to that offering. If there is any inconsistency between the information in this prospectus and the applicable prospectus supplement or free writing prospectus, you should rely on the information in the prospectus supplement or free writing prospectus, as applicable. Before purchasing any securities, you should carefully read both this prospectus and the applicable prospectus supplement (and any applicable free writing prospectuses), together with the additional information described under the heading “Where You Can Find More Information; Incorporation by Reference.”
We have not authorized anyone to provide you with any information or to make any representations other than those contained in this prospectus, any applicable prospectus supplement or any free writing prospectuses prepared by or on behalf of us or to which we have referred you. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We will not make an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus and the applicable prospectus supplement to this prospectus is accurate only as of the date on its respective cover, that the information appearing in any applicable free writing prospectus is accurate only as of the date of that free writing prospectus, and that any information incorporated by reference is accurate only as of the date of the document incorporated by reference, unless we indicate otherwise. Our business, financial condition, results of operations and prospects may have changed since those dates. This prospectus incorporates by reference, and any prospectus supplement or free writing prospectus may contain and incorporate by reference, market data and industry statistics and forecasts that are based on independent industry publications and other publicly available information. Although we believe these sources are reliable, we do not guarantee the accuracy or completeness of this information and we have not independently verified this information. In addition, the market and industry data and forecasts that may be included or incorporated by reference in this prospectus, any prospectus supplement or any applicable free writing prospectus may involve estimates, assumptions and other risks and uncertainties and are subject to change based on various factors, including those discussed under the heading “Risk Factors” contained in this prospectus, the applicable prospectus supplement and any applicable free writing prospectus, and under similar headings in other documents that are incorporated by reference into this prospectus. Accordingly, investors should not place undue reliance on this information.
When we refer to “Menlo Therapeutics,” “we,” “our,” “us” and the “Company” in this prospectus, we mean Menlo Therapeutics Inc., unless otherwise specified. When we refer to “you,” we mean the potential holders of the applicable series of securities.
Menlo Therapeutics™ and our logo are some of our trademarks used in this prospectus. This prospectus also includes trademarks, tradenames, and service marks that are the property of other organizations. Solely for convenience, our trademarks and tradenames referred to in this prospectus appear without the ™ symbol, but those references are not intended to indicate, in any way, that we will not assert, to the fullest extent under applicable law, our rights, or the right of the applicable licensor to these trademarks and tradenames.
 
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WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY REFERENCE
Available Information
We file reports, proxy statements and other information with the SEC. The SEC maintains a website that contains reports, proxy and information statements and other information about issuers, such as us, who file electronically with the SEC. The address of that website is http://www.sec.gov.
Our website address is www.menlotherapeutics.com. The information on our website, however, is not, and should not be deemed to be, a part of this prospectus. We have included our website address as an inactive textual reference only.
This prospectus and any prospectus supplement are part of a registration statement that we filed with the SEC and do not contain all of the information in the registration statement. The full registration statement may be obtained from the SEC or us, as provided below. Forms of the indenture and other documents establishing the terms of the offered securities are or may be filed as exhibits to the registration statement or documents incorporated by reference in the registration statement. Statements in this prospectus or any prospectus supplement about these documents are summaries and each statement is qualified in all respects by reference to the document to which it refers. You should refer to the actual documents for a more complete description of the relevant matters. You may inspect a copy of the registration statement through the SEC’s website, as provided above.
Incorporation by Reference
The SEC’s rules allow us to “incorporate by reference” information into this prospectus, which means that we can disclose important information to you by referring you to another document filed separately with the SEC. The information incorporated by reference is deemed to be part of this prospectus, and subsequent information that we file with the SEC will automatically update and supersede that information. Any statement contained in this prospectus or a previously filed document incorporated by reference will be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained in this prospectus or a subsequently filed document incorporated by reference modifies or replaces that statement.
We incorporate by reference our documents listed below and any future filings made by us with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended, which we refer to as the “Exchange Act” in this prospectus, between the date of this prospectus and the termination of the offering of the securities described in this prospectus. We are not, however, incorporating by reference any documents or portions thereof, whether specifically listed below or filed in the future, that are not deemed “filed” with the SEC, including any Compensation Committee report and performance graph or any information furnished pursuant to Items 2.02 or 7.01 of Form 8-K or related exhibits furnished pursuant to Item 9.01 of Form 8-K.
This prospectus and any accompanying prospectus supplement incorporate by reference the documents set forth below that have previously been filed with the SEC:


our Quarterly Reports on Form 10-Q for the quarter ended March 31, 2018, which was filed with the SEC on May 9, 2018, for the quarter ended June 30, 2018, which was filed with the SEC on August 1, 2018, and for the quarter ended September 30, 2018, which was filed with the SEC on November 7, 2018;

our Current Reports on Form 8-K filed with the SEC on January 29, 2018, March 16, 2018, May 7, 2018, June 28, 2018, October 9, 2018 and November 13, 2018 (other than the portions of those reports not deemed to be filed); and

 
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All reports and other documents we subsequently file pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act prior to the termination of this offering, including all such documents we may file with the SEC after the date of the initial registration statement and prior to the effectiveness of the registration statement, but excluding any information furnished to, rather than filed with, the SEC, will also be incorporated by reference into this prospectus and deemed to be part of this prospectus from the date of the filing of such reports and documents.
You may request a free copy of any of the documents incorporated by reference in this prospectus (other than exhibits, unless they are specifically incorporated by reference in the documents) by writing or telephoning us at the following address:
Menlo Therapeutics Inc.
200 Cardinal Way, 2nd Floor
Redwood City, California 94063
Tel: 650-486-1416
Attn: Investor Relations
E-Mail: IR@menlotx.com
Exhibits to the filings will not be sent, however, unless those exhibits have specifically been incorporated by reference in this prospectus and any accompanying prospectus supplement.
 
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ABOUT MENLO THERAPEUTICS
We are a late-stage biopharmaceutical company focused on the development and commercialization of serlopitant for the treatment of pruritus, or itch, associated with various conditions such as prurigo nodularis, psoriasis and chronic pruritus of unknown origin.
We were incorporated in Delaware in October 2011 under the name Tigercat Pharma, Inc. In May 2016, we changed our name to Menlo Therapeutics Inc. Our principal executive offices are located 200 Cardinal Way, 2nd Floor, Redwood City, CA 94063, and our telephone number is (650) 486-1416.
 
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RISK FACTORS
Investment in any securities offered pursuant to this prospectus and the applicable prospectus supplement involves risks. You should carefully consider the risk factors incorporated by reference to our most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q, and any subsequent Quarterly Reports on Form 10-Q, Annual Report on Form 10-K, or Current Reports on Form 8-K we file after the date of this prospectus, and all other information contained or incorporated by reference into this prospectus, as updated by our subsequent filings under the Exchange Act, and the risk factors and other information contained in the applicable prospectus supplement and any applicable free writing prospectus before acquiring any of such securities. The occurrence of any of these risks might cause you to lose all or part of your investment in the offered securities.
 
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USE OF PROCEEDS
We will retain broad discretion over the use of the net proceeds from the sale of the securities offered by us hereby. Except as described in any applicable prospectus supplement or in any free writing prospectuses we have authorized for use in connection with a specific offering, we currently intend to use the net proceeds from the sale of the securities offered by us hereunder, if any, as set forth in the applicable prospectus supplement.
 
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RATIO OF EARNINGS TO FIXED CHARGES AND PREFERENCE DIVIDENDS
Our earnings have been inadequate to cover fixed charges and preference dividends. The following table sets forth the dollar amount of the deficiency to cover fixed charges and preference dividends for each of the years ended December 31, 2017, 2016 and 2015, and the nine months ended September 30, 2018. We have derived the deficiency of earnings to cover fixed charges and preference dividends from our historical financial statements. The following should be read in conjunction with our financial statements, including the notes thereto, and the other financial information included or incorporated by reference herein. See Exhibit 12.1 hereto for additional detail regarding the computation of the deficiency of earnings to cover fixed charges and preference dividends.
Year Ended December 31,
Nine Months
Ended
September 30,
2018
(in thousands)
2017
2016
2015
Deficiency of earnings available to cover fixed charges
$ 29,076 $ 14,068 $ 4,608 $ 33,852
For the periods indicated above, we have no outstanding shares of preferred stock with required dividend payments. Therefore, the deficiency of earnings to combined fixed charges and preferred stock dividends is identical to the deficiency presented in the table above.
 
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DESCRIPTION OF CAPITAL STOCK
The following summary describes our capital stock and the material provisions of our amended and restated certificate of incorporation and our amended and restated bylaws, the amended and restated investor rights agreement to which we and certain of our stockholders are parties and of the General Corporation Law of the State of Delaware. Because the following is only a summary, it does not contain all of the information that may be important to you. For a complete description, you should refer to our amended and restated certificate of incorporation, amended and restated bylaws, and amended and restated investor rights agreement, copies of which are incorporated by reference as exhibits to the registration statement of which this prospectus is a part.
General
Our amended and restated certificate of incorporation authorizes 300,000,000 shares of common stock, $0.0001 par value per share, and 20,000,000 shares of preferred stock, $0.0001 par value per share, in each case after giving effect to a 1-for-2.6975 reverse stock split of our capital stock we effected in connection with our initial public offering. As of September 30, 2018, there were outstanding:

23,232,184 shares of our common stock, held by approximately 14 stockholders of record; and

3,050,067 shares of common stock issuable upon exercise of outstanding stock options.
Common Stock
Voting Rights
Each holder of our common stock is entitled to one vote for each share on all matters submitted to a vote of the stockholders, including the election of directors. Our stockholders do not have cumulative voting rights in the election of directors. Accordingly, holders of a majority of the voting shares are able to elect all of the directors. In addition, the affirmative vote of holders of 66-2/3% of the voting power of all of the then outstanding voting stock will be required to take certain actions, including amending certain provisions of our amended and restated certificate of incorporation, such as the provisions relating to amending our amended and restated bylaws, procedures for our stockholder meetings, the classified board, director liability, and exclusive forum for proceedings.
Dividends
Subject to preferences that may be applicable to any then outstanding preferred stock, holders of our common stock are entitled to receive dividends, if any, as may be declared from time to time by our board of directors out of legally available funds.
Liquidation
In the event of our liquidation, dissolution or winding up, holders of our common stock will be entitled to share ratably in the net assets legally available for distribution to stockholders after the payment of all of our debts and other liabilities and the satisfaction of any liquidation preference granted to the holders of any then outstanding shares of preferred stock.
Rights and Preferences
Holders of our common stock have no preemptive, conversion, subscription or other rights, and there are no redemption or sinking fund provisions applicable to our common stock. The rights, preferences and privileges of the holders of our common stock are subject to, and may be adversely affected by, the rights of the holders of shares of any series of our preferred stock that we may designate in the future.
Preferred Stock
Our board of directors has the authority, without further action by our stockholders, to issue up to 20,000,000 shares of preferred stock in one or more series and to fix the rights, preferences, privileges
 
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and restrictions thereof. These rights, preferences and privileges could include dividend rights, conversion rights, voting rights, terms of redemption, liquidation preferences, sinking fund terms and the number of shares constituting, or the designation of, such series, any or all of which may be greater than the rights of common stock. The issuance of our preferred stock could adversely affect the voting power of holders of common stock and the likelihood that such holders will receive dividend payments and payments upon our liquidation. In addition, the issuance of preferred stock could have the effect of delaying, deferring or preventing a change in control of our company or other corporate action. As of September 30, 2018, there were no shares of preferred stock outstanding, and we have no present plan to issue any shares of preferred stock.
Registration Rights
Under our second amended and restated investors’ rights agreement, based on the number of shares outstanding as of September 30, 2018, the holders of approximately 5.5 million shares of common stock, or their transferees, have the right to require us to register their shares under the Securities Act so that those shares may be publicly resold, and also have the right to include their shares in any registration statement we file, in each case as described below.
Demand Registration Rights
Based on the number of shares outstanding as of September 30, 2018, the holders of approximately 5.5 million shares of our common stock (on an as-converted basis), or their transferees, will be entitled to certain demand registration rights (subject to certain exceptions). The holders of at least 50% of these shares can request that we register all or a portion of their shares if the aggregate price to the public of the shares offered is at least $10.0 million.
Form S-3 Registration Rights
Based on the number of shares outstanding as of September 30, 2018, the holders of approximately 5.5 million shares of our common stock (on an as-converted basis), or their transferees, are entitled to certain Form S-3 registration rights. The holders of these shares can make a written request that we register their shares on Form S-3 if we are eligible to file a registration statement on Form S-3 and if the aggregate price to the public of the shares offered is at least $1.0 million net of certain expenses related to the sale of the shares. These stockholders may make an unlimited number of requests for registration on Form S-3, but in no event shall we be required to file a registration if we have, within the twelve-month period preceding the date of such request, already effected two registrations on Form S-3.
Piggyback Registration Rights
Based on the number of shares outstanding as of September 30, 2018, in the event that we determine to register any of our securities under the Securities Act (subject to certain exceptions), either for our own account or for the account of other security holders, the holders of approximately 5.5 million shares of our common stock (on an as-converted basis), or their transferees, will be entitled to certain “piggyback” registration rights allowing the holders to include their shares in such registration, subject to certain marketing and other limitations. As a result, whenever we propose to file a registration statement under the Securities Act, other than with respect to a registration related to employee benefit plans, the offer and sale of debt securities, or corporate reorganizations or certain other transactions, the holders of these shares are entitled to notice of the registration and have the right, subject to limitations that the underwriters may impose on the number of shares included in the registration, to include their shares in the registration. In an underwritten offering, the managing underwriter, if any, has the right, subject to specified conditions, to limit the number of shares such holders may include.
Expenses of Registration; Indemnification
We will pay the registration expenses of the holders of the shares registered pursuant to the demand, piggyback and Form S-3 registration rights described above, including the expenses of one
 
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counsel for the selling holders, not to exceed $35,000 (subject to certain exceptions). The amended and restated investors’ rights agreement contains customary indemnification provisions with respect to registration rights.
Expiration of Registration Rights
The demand, piggyback and Form S-3 registration rights described above will expire, with respect to any particular stockholder, upon the earlier of five years after the closing of our IPO, when such stockholder can sell all of its shares under Rule 144 of the Securities Act during any three-month period or our liquidation, dissolution or winding up.
Anti-Takeover Effects of Provisions of our Amended and Restated Certificate of Incorporation, our Amended and Restated Bylaws and Delaware Law
Some provisions of Delaware law and our amended and restated certificate of incorporation and our amended and restated bylaws contain provisions that could make the following transactions more difficult: acquisition of us by means of a tender offer; acquisition of us by means of a proxy contest or otherwise; or removal of our incumbent officers and directors. It is possible that these provisions could make it more difficult to accomplish or could deter transactions that stockholders may otherwise consider to be in their best interest or in our best interests, including transactions that might result in a premium over the market price for our shares.
These provisions, summarized below, are expected to discourage coercive takeover practices and inadequate takeover bids. These provisions are also designed to encourage persons seeking to acquire control of us to first negotiate with our board of directors. We believe that the benefits of increased protection of our potential ability to negotiate with the proponent of an unfriendly or unsolicited proposal to acquire or restructure us outweigh the disadvantages of discouraging these proposals because negotiation of these proposals could result in an improvement of their terms.
Delaware Anti-Takeover Statute
We are subject to Section 203 of the Delaware General Corporation Law, which prohibits persons deemed “interested stockholders” from engaging in a “business combination” with a publicly-held Delaware corporation for three years following the date these persons become interested stockholders unless the business combination is, or the transaction in which the person became an interested stockholder was, approved in a prescribed manner or another prescribed exception applies. Generally, an “interested stockholder” is a person who, together with affiliates and associates, owns, or within three years prior to the determination of interested stockholder status did own, 15% or more of a corporation’s voting stock. Generally, a “business combination” includes a merger, asset or stock sale, or other transaction resulting in a financial benefit to the interested stockholder. The existence of this provision may have an anti-takeover effect with respect to transactions not approved in advance by the board of directors, such as discouraging takeover attempts that might result in a premium over the market price of our common stock.
Undesignated Preferred Stock
The ability to authorize undesignated preferred stock makes it possible for our board of directors to issue preferred stock with voting or other rights or preferences that could impede the success of any attempt to change control of us. These and other provisions may have the effect of deterring hostile takeovers or delaying changes in control or management of our company.
Special Stockholder Meetings
Our amended and restated bylaws provide that a special meeting of stockholders may be called by our board of directors, our President, our Chief Executive Officer, or the Secretary.
 
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Requirements for Advance Notification of Stockholder Nominations and Proposals
Our amended and restated bylaws include advance notice procedures with respect to stockholder proposals and the nomination of candidates for election as directors, other than nominations made by or at the direction of the board of directors or a committee of the board of directors.
Elimination of Stockholder Action by Written Consent
Our amended and restated certificate of incorporation and our amended and restated bylaws do not permit stockholders to act by written consent without a meeting.
Classified Board; Election and Removal of Directors; Filling Vacancies
Our board of directors is divided into three classes. The directors in each class will serve for a three-year term, one class being elected each year by our stockholders, with staggered three-year terms. Only one class of directors will be elected at each annual meeting of our stockholders, with the other classes continuing for the remainder of their respective three-year terms. Because our stockholders do not have cumulative voting rights, our stockholders holding a majority of the shares of common stock outstanding will be able to elect all of our directors. Our amended and restated certificate of incorporation provides for the removal of any of our directors only for cause and requires a stockholder vote by the holders of at least a 66-2/3% of the voting power of the then outstanding voting stock. Furthermore, any vacancy on our board of directors, however occurring, including a vacancy resulting from an increase in the size of the board, may only be filled by a resolution of the board of directors unless the board of directors determines that such vacancies shall be filled by the stockholders. This system of electing and removing directors and filling vacancies may tend to discourage a third party from making a tender offer or otherwise attempting to obtain control of us, because it generally makes it more difficult for stockholders to replace a majority of the directors.
Choice of Forum
Our amended and restated certificate of incorporation provides that, unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware will be the exclusive forum for: any derivative action or proceeding brought on our behalf; any action asserting a breach of fiduciary duty; any action asserting a claim against us arising pursuant to the Delaware General Corporation Law, our amended and restated certificate of incorporation or our amended and restated bylaws; or any action asserting a claim against us that is governed by the internal affairs doctrine. Although our amended and restated certificate of incorporation contains the choice of forum provision described above, it is possible that a court could find that such a provision is inapplicable for a particular claim or action or that such provision is unenforceable.
Amendment of Charter Provisions
The amendment of any of the above provisions, except for the provision making it possible for our board of directors to issue undesignated preferred stock, would require approval by a stockholder vote by the holders of at least a 66-2/3% of the voting power of the then outstanding voting stock.
The provisions of the Delaware General Corporation Law, our amended and restated certificate of incorporation and our amended and restated bylaws could have the effect of discouraging others from attempting hostile takeovers and, as a consequence, they may also inhibit temporary fluctuations in the market price of our common stock that often result from actual or rumored hostile takeover attempts. These provisions may also have the effect of preventing changes in our management. It is possible that these provisions could make it more difficult to accomplish transactions that stockholders may otherwise deem to be in their best interests.
Limitations of Liability and Indemnification
Our amended and restated certificate of incorporation contains provisions that limit the liability of our directors for monetary damages to the fullest extent permitted by Delaware law. Consequently, our
 
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directors will not be personally liable to us or our stockholders for monetary damages for any breach of fiduciary duties as directors, except liability for:

any breach of the director’s duty of loyalty to us or our stockholders;

any act or omission not in good faith or that involves intentional misconduct or a knowing violation of law;

unlawful payments of dividends or unlawful stock repurchases or redemptions as provided in Section 174 of the Delaware General Corporation Law; or

any transaction from which the director derived an improper personal benefit.
Each of our amended and restated certificate of incorporation and amended and restated bylaws provides that we are required to indemnify our directors and officers, in each case, to the fullest extent permitted by Delaware law. Our amended and restated bylaws will also obligate us to advance expenses incurred by a director or officer in advance of the final disposition of any action or proceeding, and permit us to secure insurance on behalf of any officer, director, employee or other agent for any liability arising out of his or her actions in that capacity regardless of whether we would otherwise be permitted to indemnify him or her under Delaware law. We have entered and expect to continue to enter into agreements to indemnify our directors, executive officers and other employees as determined by our board of directors. With specified exceptions, these agreements provide for indemnification for related expenses including, among other things, attorneys’ fees, judgments, fines and settlement amounts incurred by any of these individuals in any action or proceeding. We believe that these bylaw provisions and indemnification agreements are necessary to attract and retain qualified persons as directors and officers. We also maintain directors’ and officers’ liability insurance. The limitation of liability and indemnification provisions in our amended and restated certificate of incorporation and amended and restated bylaws may discourage stockholders from bringing a lawsuit against our directors and officers for breach of their fiduciary duty. They may also reduce the likelihood of derivative litigation against our directors and officers, even though an action, if successful, might benefit us and our stockholders. Further, a stockholder’s investment may be adversely affected to the extent that we pay the costs of settlement and damage.
Listing
Our common stock is listed on the Nasdaq Global Select Market under the trading symbol “MNLO.”
Transfer Agent and Registrar
The transfer agent and registrar for our common stock is American Stock Transfer Trust Company, LLC. The transfer agent and registrar’s address is 6201 15th Avenue, Brooklyn, New York 11219.
 
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DESCRIPTION OF DEBT SECURITIES
The following description, together with the additional information we include in any applicable prospectus supplement or free writing prospectus, summarizes certain general terms and provisions of the debt securities that we may offer under this prospectus. When we offer to sell a particular series of debt securities, we will describe the specific terms of the series in a supplement to this prospectus. We will also indicate in the supplement to what extent the general terms and provisions described in this prospectus apply to a particular series of debt securities.
We may issue debt securities either separately, or together with, or upon the conversion or exercise of or in exchange for, other securities described in this prospectus. Debt securities may be our senior, senior subordinated or subordinated obligations and, unless otherwise specified in a supplement to this prospectus, the debt securities will be our direct, unsecured obligations and may be issued in one or more series.
The debt securities will be issued under an indenture between us and a third party to be identified therein as trustee. We have summarized select portions of the indenture below. The summary is not complete. The form of the indenture has been filed as an exhibit to the registration statement and you should read the indenture for provisions that may be important to you. In the summary below, we have included references to the section numbers of the indenture so that you can easily locate these provisions. Capitalized terms used in the summary and not defined herein have the meanings specified in the indenture.
As used in this section only, “Menlo Therapeutics,” “we,” “our,” or “us” refer to Menlo Therapeutics Inc., excluding our subsidiaries, unless expressly stated or the context otherwise requires.
General
The terms of each series of debt securities will be established by or pursuant to a resolution of our board of directors and set forth or determined in the manner provided in a resolution of our board of directors, in an officer’s certificate or by a supplemental indenture. (Section 2.2) The particular terms of each series of debt securities will be described in a prospectus supplement relating to such series (including any pricing supplement or term sheet).
We can issue an unlimited amount of debt securities under the indenture that may be in one or more series with the same or various maturities, at par, at a premium, or at a discount. (Section 2.1) We will set forth in a prospectus supplement (including any pricing supplement or term sheet) relating to any series of debt securities being offered, the aggregate principal amount and the following terms of the debt securities, if applicable:

the title and ranking of the debt securities (including the terms of any subordination provisions);

the price or prices (expressed as a percentage of the principal amount) at which we will sell the debt securities;

any limit on the aggregate principal amount of the debt securities;

the date or dates on which the principal of the securities of the series is payable;

the rate or rates (which may be fixed or variable) per annum or the method used to determine the rate or rates (including any commodity, commodity index, stock exchange index or financial index) at which the debt securities will bear interest, the date or dates from which interest will accrue, the date or dates on which interest will commence and be payable and any regular record date for the interest payable on any interest payment date;

the place or places where principal of, and interest, if any, on the debt securities will be payable (and the method of such payment), where the securities of such series may be surrendered for registration of transfer or exchange, and where notices and demands to us in respect of the debt securities may be delivered;

the period or periods within which, the price or prices at which and the terms and conditions upon which we may redeem the debt securities;
 
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any obligation we have to redeem or purchase the debt securities pursuant to any sinking fund or analogous provisions or at the option of a holder of debt securities and the period or periods within which, the price or prices at which and in the terms and conditions upon which securities of the series shall be redeemed or purchased, in whole or in part, pursuant to such obligation;

the dates on which and the price or prices at which we will repurchase debt securities at the option of the holders of debt securities and other detailed terms and provisions of these repurchase obligations;

the denominations in which the debt securities will be issued, if other than denominations of $1,000 and any integral multiples in excess thereof;

whether the debt securities will be issued in the form of certificated debt securities or global debt securities;

the portion of principal amount of the debt securities payable upon declaration of acceleration of the maturity date, if other than the principal amount;

the currency of denomination of the debt securities, which may be United States Dollars or any foreign currency, and if such currency of denomination is a composite currency, the agency or organization, if any, responsible for overseeing such composite currency;

the designation of the currency, currencies or currency units in which payment of principal of, premium and interest on the debt securities will be made;

if payments of principal of, premium or interest on the debt securities will be made in one or more currencies or currency units other than that or those in which the debt securities are denominated, the manner in which the exchange rate with respect to these payments will be determined;

the manner in which the amounts of payment of principal of, premium, if any, or interest on the debt securities will be determined, if these amounts may be determined by reference to an index based on a currency or currencies or by reference to a commodity, commodity index, stock exchange index or financial index;

any provisions relating to any security provided for the debt securities;

any addition to, deletion of or change in the Events of Default described in this prospectus or in the indenture with respect to the debt securities and any change in the acceleration provisions described in this prospectus or in the indenture with respect to the debt securities;

any addition to, deletion of or change in the covenants described in this prospectus or in the indenture with respect to the debt securities;

any depositaries, interest rate calculation agents, exchange rate calculation agents or other agents with respect to the debt securities;

the provisions, if any, relating to conversion or exchange of any debt securities of such series, including if applicable, the conversion or exchange price and period, provisions as to whether conversion or exchange will be mandatory, the events requiring an adjustment of the conversion or exchange price and provisions affecting conversion or exchange;

any other terms of the debt securities, which may supplement, modify or delete any provision of the indenture as it applies to that series, including any terms that may be required under applicable law or regulations or advisable in connection with the marketing of the securities; and

whether any of our direct or indirect subsidiaries will guarantee the debt securities of that series, including the terms of subordination, if any, of such guarantees. (Section 2.2)
We may issue debt securities that provide for an amount less than their stated principal amount to be due and payable upon declaration of acceleration of their maturity pursuant to the terms of the
 
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indenture. We will provide you with information on the federal income tax considerations and other special considerations applicable to any of these debt securities in the applicable prospectus supplement.
If we denominate the purchase price of any of the debt securities in a foreign currency or currencies or a foreign currency unit or units, or if the principal of and any premium and interest on any series of debt securities is payable in a foreign currency or currencies or a foreign currency unit or units, we will provide you with information on the restrictions, elections, general tax considerations, specific terms and other information with respect to that issue of debt securities and such foreign currency or currencies or foreign currency unit or units in the applicable prospectus supplement.
Transfer and Exchange
Each debt security will be represented by either one or more global securities registered in the name of The Depository Trust Company, or the Depositary, or a nominee of the Depositary (we will refer to any debt security represented by a global debt security as a “book-entry debt security”), or a certificate issued in definitive registered form (we will refer to any debt security represented by a certificated security as a “certificated debt security”) as set forth in the applicable prospectus supplement. Except as set forth under the heading “Global Debt Securities and Book-Entry System” below, book-entry debt securities will not be issuable in certificated form.
Certificated Debt Securities.   You may transfer or exchange certificated debt securities at any office we maintain for this purpose in accordance with the terms of the indenture. (Section 2.4) No service charge will be made for any transfer or exchange of certificated debt securities, but we may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection with a transfer or exchange. (Section 2.7)
You may effect the transfer of certificated debt securities and the right to receive the principal of, premium and interest on certificated debt securities only by surrendering the certificate representing those certificated debt securities and either reissuance by us or the trustee of the certificate to the new holder or the issuance by us or the trustee of a new certificate to the new holder.
Global Debt Securities and Book-Entry System.   Each global debt security representing book-entry debt securities will be deposited with, or on behalf of, the Depositary, and registered in the name of the Depositary or a nominee of the Depositary. Please see “Global Securities.”
Covenants
We will set forth in the applicable prospectus supplement any restrictive covenants applicable to any issue of debt securities. (Article IV)
No Protection in the Event of a Change of Control
Unless we state otherwise in the applicable prospectus supplement, the debt securities will not contain any provisions which may afford holders of the debt securities protection in the event we have a change in control or in the event of a highly leveraged transaction (whether or not such transaction results in a change in control) which could adversely affect holders of debt securities.
Consolidation, Merger and Sale of Assets
We may not consolidate with or merge with or into, or convey, transfer or lease all or substantially all of our properties and assets to any person (a “successor person”) unless:

we are the surviving corporation or the successor person (if other than Menlo Therapeutics) is a corporation organized and validly existing under the laws of any U.S. domestic jurisdiction and expressly assumes our obligations on the debt securities and under the indenture; and

immediately after giving effect to the transaction, no Default or Event of Default, shall have occurred and be continuing.
 
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Notwithstanding the above, any of our subsidiaries may consolidate with, merge into or transfer all or part of its properties to us. (Section 5.1)
Events of Default
“Event of Default” means with respect to any series of debt securities, any of the following:

default in the payment of any interest upon any debt security of that series when it becomes due and payable, and continuance of such default for a period of 30 days (unless the entire amount of the payment is deposited by us with the trustee or with a paying agent prior to the expiration of the 30-day period);

default in the payment of principal of any security of that series at its maturity;

default in the performance or breach of any other covenant or warranty by us in the indenture (other than a covenant or warranty that has been included in the indenture solely for the benefit of a series of debt securities other than that series), which default continues uncured for a period of 60 days after we receive written notice from the trustee or Menlo Therapeutics and the trustee receive written notice from the holders of not less than 25% in principal amount of the outstanding debt securities of that series as provided in the indenture;

certain voluntary or involuntary events of bankruptcy, insolvency or reorganization of Menlo Therapeutics; and

any other Event of Default provided with respect to debt securities of that series that is described in the applicable prospectus supplement. (Section 6.1)
No Event of Default with respect to a particular series of debt securities (except as to certain events of bankruptcy, insolvency or reorganization) necessarily constitutes an Event of Default with respect to any other series of debt securities. (Section 6.1) The occurrence of certain Events of Default or an acceleration under the indenture may constitute an event of default under certain indebtedness of ours or our subsidiaries outstanding from time to time.
We will provide the trustee written notice of any Default or Event of Default within 30 days of becoming aware of the occurrence of such Default or Event of Default, which notice will describe in reasonable detail the status of such Default or Event of Default and what action we are taking or propose to take in respect thereof. (Section 6.1)
If an Event of Default with respect to debt securities of any series at the time outstanding occurs and is continuing, then the trustee or the holders of not less than 25% in principal amount of the outstanding debt securities of that series may, by a notice in writing to us (and to the trustee if given by the holders), declare to be due and payable immediately the principal of  (or, if the debt securities of that series are discount securities, that portion of the principal amount as may be specified in the terms of that series) and accrued and unpaid interest, if any, on all debt securities of that series. In the case of an Event of Default resulting from certain events of bankruptcy, insolvency or reorganization, the principal (or such specified amount) of and accrued and unpaid interest, if any, on all outstanding debt securities will become and be immediately due and payable without any declaration or other act on the part of the trustee or any holder of outstanding debt securities. At any time after a declaration of acceleration with respect to debt securities of any series has been made, but before a judgment or decree for payment of the money due has been obtained by the trustee, the holders of a majority in principal amount of the outstanding debt securities of that series may rescind and annul the acceleration if all Events of Default, other than the non-payment of accelerated principal and interest, if any, with respect to debt securities of that series, have been cured or waived as provided in the indenture. (Section 6.2) We refer you to the prospectus supplement relating to any series of debt securities that are discount securities for the particular provisions relating to acceleration of a portion of the principal amount of such discount securities upon the occurrence of an Event of Default.
The indenture provides that the trustee may refuse to perform any duty or exercise any of its rights or powers under the indenture unless the trustee receives indemnity satisfactory to it against any cost, liability or expense which might be incurred by it in performing such duty or exercising such right or power.
 
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(Section 7.1(e)) Subject to certain rights of the trustee, the holders of a majority in principal amount of the outstanding debt securities of any series will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee or exercising any trust or power conferred on the trustee with respect to the debt securities of that series. (Section 6.12)
No holder of any debt security of any series will have any right to institute any proceeding, judicial or otherwise, with respect to the indenture or for the appointment of a receiver or trustee, or for any remedy under the indenture, unless:

that holder has previously given to the trustee written notice of a continuing Event of Default with respect to debt securities of that series; and

the holders of not less than 25% in principal amount of the outstanding debt securities of that series have made written request, and offered indemnity or security satisfactory to the trustee, to the trustee to institute the proceeding as trustee, and the trustee has not received from the holders of not less than a majority in principal amount of the outstanding debt securities of that series a direction inconsistent with that request and has failed to institute the proceeding within 60 days. (Section 6.7)
Notwithstanding any other provision in the indenture, the holder of any debt security will have an absolute and unconditional right to receive payment of the principal of, premium and any interest on that debt security on or after the due dates expressed in that debt security and to institute suit for the enforcement of payment. (Section 6.8)
The indenture requires us, within 120 days after the end of our fiscal year, to furnish to the trustee a statement as to compliance with the indenture. (Section 4.3) If a Default or Event of Default occurs and is continuing with respect to the securities of any series and if it is known to a responsible officer of the trustee, the trustee shall mail to each holder of the securities of that series notice of a Default or Event of Default within 90 days after it occurs or, if later, after a responsible officer of the trustee has knowledge of such Default or Event of Default. The indenture provides that the trustee may withhold notice to the holders of debt securities of any series of any Default or Event of Default (except in payment on any debt securities of that series) with respect to debt securities of that series if the trustee determines in good faith that withholding notice is in the interest of the holders of those debt securities. (Section 7.5)
Modification and Waiver
We and the trustee may modify, amend or supplement the indenture or the debt securities of any series without the consent of any holder of any debt security:

to cure any ambiguity, defect or inconsistency;

to comply with covenants in the indenture described above under the heading “Consolidation, Merger and Sale of Assets”;

to provide for uncertificated securities in addition to or in place of certificated securities;

to add guarantees with respect to debt securities of any series or secure debt securities of any series;

to surrender any of our rights or powers under the indenture;

to add covenants or events of default for the benefit of the holders of debt securities of any series;

to comply with the applicable procedures of the applicable depositary;

to make any change that does not adversely affect the rights of any holder of debt securities;

to provide for the issuance of and establish the form and terms and conditions of debt securities of any series as permitted by the indenture;
 
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to effect the appointment of a successor trustee with respect to the debt securities of any series and to add to or change any of the provisions of the indenture to provide for or facilitate administration by more than one trustee; or

to comply with requirements of the SEC in order to effect or maintain the qualification of the indenture under the Trust Indenture Act. (Section 9.1)
We may also modify and amend the indenture with the consent of the holders of at least a majority in principal amount of the outstanding debt securities of each series affected by the modifications or amendments. We may not make any modification or amendment without the consent of the holders of each affected debt security then outstanding if that amendment will:

reduce the amount of debt securities whose holders must consent to an amendment, supplement or waiver;

reduce the rate of or extend the time for payment of interest (including default interest) on any debt security;

reduce the principal of or premium on or change the fixed maturity of any debt security or reduce the amount of, or postpone the date fixed for, the payment of any sinking fund or analogous obligation with respect to any series of debt securities;

reduce the principal amount of discount securities payable upon acceleration of maturity;

waive a default in the payment of the principal of, premium or interest on any debt security (except a rescission of acceleration of the debt securities of any series by the holders of at least a majority in aggregate principal amount of the then outstanding debt securities of that series and a waiver of the payment default that resulted from such acceleration);

make the principal of or premium or interest on any debt security payable in currency other than that stated in the debt security;

make any change to certain provisions of the indenture relating to, among other things, the right of holders of debt securities to receive payment of the principal of, premium and interest on those debt securities and to institute suit for the enforcement of any such payment and to waivers or amendments; or

waive a redemption payment with respect to any debt security. (Section 9.3)
Except for certain specified provisions, the holders of at least a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all debt securities of that series waive our compliance with provisions of the indenture. (Section 9.2) The holders of a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all the debt securities of such series waive any past default under the indenture with respect to that series and its consequences, except a default in the payment of the principal of, premium or any interest on any debt security of that series; provided, however, that the holders of a majority in principal amount of the outstanding debt securities of any series may rescind an acceleration and its consequences, including any related payment default that resulted from the acceleration. (Section 6.13)
Defeasance of Debt Securities and Certain Covenants in Certain Circumstances
Legal Defeasance. The indenture provides that, unless otherwise provided by the terms of the applicable series of debt securities, we may be discharged from any and all obligations in respect of the debt securities of any series (subject to certain exceptions). We will be so discharged upon the irrevocable deposit with the trustee, in trust, of money and/or U.S. government obligations or, in the case of debt securities denominated in a single currency other than U.S. Dollars, government obligations of the government that issued or caused to be issued such currency, that, through the payment of interest and principal in accordance with their terms, will provide money or U.S. government obligations in an amount sufficient in the opinion of a nationally recognized firm of independent public accountants or investment bank to pay and discharge each installment of principal, premium and interest on and any mandatory sinking fund payments in respect of the debt securities of that series on the stated maturity of those payments in accordance with the terms of the indenture and those debt securities.
 
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This discharge may occur only if, among other things, we have delivered to the trustee an opinion of counsel stating that we have received from, or there has been published by, the United States Internal Revenue Service a ruling or, since the date of execution of the indenture, there has been a change in the applicable United States federal income tax law, in either case to the effect that, and based thereon such opinion shall confirm that, the holders of the debt securities of that series will not recognize income, gain or loss for United States federal income tax purposes as a result of the deposit, defeasance and discharge and will be subject to United States federal income tax on the same amounts and in the same manner and at the same times as would have been the case if the deposit, defeasance and discharge had not occurred. (Section 8.3)
Defeasance of Certain Covenants.   The indenture provides that, unless otherwise provided by the terms of the applicable series of debt securities, upon compliance with certain conditions:

we may omit to comply with the covenant described under the heading “Consolidation, Merger and Sale of Assets” and certain other covenants set forth in the indenture, as well as any additional covenants which may be set forth in the applicable prospectus supplement; and

any omission to comply with those covenants will not constitute a Default or an Event of Default with respect to the debt securities of that series (“covenant defeasance”).
The conditions include:

depositing with the trustee money and/or U.S. government obligations or, in the case of debt securities denominated in a single currency other than U.S. Dollars, government obligations of the government that issued or caused to be issued such currency, that, through the payment of interest and principal in accordance with their terms, will provide money in an amount sufficient in the opinion of a nationally recognized firm of independent public accountants or investment bank to pay and discharge each installment of principal of, premium and interest on and any mandatory sinking fund payments in respect of the debt securities of that series on the stated maturity of those payments in accordance with the terms of the indenture and those debt securities; and

delivering to the trustee an opinion of counsel to the effect that the holders of the debt securities of that series will not recognize income, gain or loss for United States federal income tax purposes as a result of the deposit and related covenant defeasance and will be subject to United States federal income tax on the same amounts and in the same manner and at the same times as would have been the case if the deposit and related covenant defeasance had not occurred. (Section 8.4)
No Personal Liability of Directors, Officers, Employees or Stockholders
None of our past, present or future directors, officers, employees or stockholders, as such, will have any liability for any of our obligations under the debt securities or the indenture or for any claim based on, or in respect or by reason of, such obligations or their creation. By accepting a debt security, each holder waives and releases all such liability. This waiver and release is part of the consideration for the issue of the debt securities. However, this waiver and release may not be effective to waive liabilities under U.S. federal securities laws, and it is the view of the SEC that such a waiver is against public policy.
Governing Law
The indenture and the debt securities, including any claim or controversy arising out of or relating to the indenture or the securities, will be governed by the laws of the State of New York.
The indenture provides that we, the trustee and the holders of the debt securities (by their acceptance of the debt securities) irrevocably waive, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to the indenture, the debt securities or the transactions contemplated thereby.
 
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The indenture provides that any legal suit, action or proceeding arising out of or based upon the indenture or the transactions contemplated thereby may be instituted in the federal courts of the United States of America located in the City of New York or the courts of the State of New York in each case located in the City of New York, and we, the trustee and the holder of the debt securities (by their acceptance of the debt securities) irrevocably submit to the non-exclusive jurisdiction of such courts in any such suit, action or proceeding. The indenture will further provide that service of any process, summons, notice or document by mail (to the extent allowed under any applicable statute or rule of court) to such party’s address set forth in the indenture will be effective service of process for any suit, action or other proceeding brought in any such court. The indenture will further provide that we, the trustee and the holders of the debt securities (by their acceptance of the debt securities) irrevocably and unconditionally waive any objection to the laying of venue of any suit, action or other proceeding in the courts specified above and irrevocably and unconditionally waive and agree not to plead or claim any such suit, action or other proceeding has been brought in an inconvenient forum. (Section 10.10)
 
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DESCRIPTION OF WARRANTS
We may issue warrants for the purchase of shares of our common stock or preferred stock or of debt securities. We may issue warrants independently or together with other securities, and the warrants may be attached to or separate from any offered securities. Each series of warrants will be issued under a separate warrant agreement to be entered into between us and the investors or a warrant agent. The following summary of material provisions of the warrants and warrant agreements are subject to, and qualified in their entirety by reference to, all the provisions of the warrant agreement and warrant certificate applicable to a particular series of warrants. The terms of any warrants offered under a prospectus supplement may differ from the terms described below. We urge you to read the applicable prospectus supplement and any related free writing prospectus, as well as the complete warrant agreements and warrant certificates that contain the terms of the warrants.
The particular terms of any issue of warrants will be described in the prospectus supplement relating to the issue. Those terms may include:

the number of shares of common stock or preferred stock purchasable upon the exercise of warrants to purchase such shares and the price at which such number of shares may be purchased upon such exercise;

the designation, stated value and terms (including, without limitation, liquidation, dividend, conversion and voting rights) of the series of preferred stock purchasable upon exercise of warrants to purchase preferred stock;

the principal amount of debt securities that may be purchased upon exercise of a debt warrant and the exercise price for the warrants, which may be payable in cash, securities or other property;

the date, if any, on and after which the warrants and the related debt securities, preferred stock or common stock will be separately transferable;

the terms of any rights to redeem or call the warrants;

the date on which the right to exercise the warrants will commence and the date on which the right will expire;

United States Federal income tax consequences applicable to the warrants; and

any additional terms of the warrants, including terms, procedures, and limitations relating to the exchange, exercise and settlement of the warrants.
Holders of equity warrants will not be entitled:

to vote, consent or receive dividends;

receive notice as stockholders with respect to any meeting of stockholders for the election of our directors or any other matter; or

exercise any rights as stockholders of Menlo Therapeutics.
Each warrant will entitle its holder to purchase the principal amount of debt securities or the number of shares of preferred stock or common stock at the exercise price set forth in, or calculable as set forth in, the applicable prospectus supplement. Unless we otherwise specify in the applicable prospectus supplement, holders of the warrants may exercise the warrants at any time up to the specified time on the expiration date that we set forth in the applicable prospectus supplement. After the close of business on the expiration date, unexercised warrants will become void.
A holder of warrant certificates may exchange them for new warrant certificates of different denominations, present them for registration of transfer and exercise them at the corporate trust office of the warrant agent or any other office indicated in the applicable prospectus supplement. Until any warrants to purchase debt securities are exercised, the holder of the warrants will not have any rights of holders of the debt securities that can be purchased upon exercise, including any rights to receive payments of principal, premium or interest on the underlying debt securities or to enforce covenants
 
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in the applicable indenture. Until any warrants to purchase common stock or preferred stock are exercised, the holders of the warrants will not have any rights of holders of the underlying common stock or preferred stock, including any rights to receive dividends or payments upon any liquidation, dissolution or winding up on the common stock or preferred stock, if any.
 
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DESCRIPTION OF PURCHASE CONTRACTS
We may issue purchase contracts for the purchase or sale of debt or equity securities issued by us. Each purchase contract will entitle the holder thereof to purchase or sell, and obligate us to sell or purchase, on specified dates, such securities at a specified purchase price, which may be based on a formula, all as set forth in the applicable prospectus supplement. Any purchase contracts we issue will be physically settled by delivery of such securities. The applicable prospectus supplement will also specify the methods by which the holders may purchase or sell such securities and any acceleration, cancellation or termination provisions or other provisions relating to the settlement of a purchase contract.
 
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DESCRIPTION OF UNITS
We may issue units consisting of any combination of the other types of securities offered under this prospectus in one or more series. We may evidence each series of units by unit certificates that we will issue under a separate agreement. We may enter into unit agreements with a unit agent. Each unit agent will be a bank or trust company that we select. We will indicate the name and address of the unit agent in the applicable prospectus supplement relating to a particular series of units.
The following description, together with the additional information included in any applicable prospectus supplement, summarizes the general features of the units that we may offer under this prospectus. You should read any prospectus supplement and any free writing prospectus that we may authorize to be provided to you related to the series of units being offered, as well as the complete unit agreements that contain the terms of the units. Specific unit agreements will contain additional important terms and provisions and we will file as an exhibit to the registration statement of which this prospectus is a part, or will incorporate by reference from another report that we file with the SEC, the form of each unit agreement relating to units offered under this prospectus.
If we offer any units, certain terms of that series of units will be described in the applicable prospectus supplement, including, without limitation, the following, as applicable:

the title of the series of units;

identification and description of the separate constituent securities comprising the units;

the price or prices at which the units will be issued;

the date, if any, on and after which the constituent securities comprising the units will be separately transferable;

a discussion of certain United States federal income tax considerations applicable to the units; and

any other terms of the units and their constituent securities.
 
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GLOBAL SECURITIES
Book-Entry, Delivery and Form
Unless we indicate differently in any applicable prospectus supplement or free writing prospectus, the securities initially will be issued in book-entry form and represented by one or more global notes or global securities, or, collectively, global securities. The global securities will be deposited with, or on behalf of, The Depository Trust Company, New York, New York, as depositary, or DTC, and registered in the name of Cede & Co., the nominee of DTC. Unless and until it is exchanged for individual certificates evidencing securities under the limited circumstances described below, a global security may not be transferred except as a whole by the depositary to its nominee or by the nominee to the depositary, or by the depositary or its nominee to a successor depositary or to a nominee of the successor depositary.
DTC has advised us that it is:

a limited-purpose trust company organized under the New York Banking Law;

a “banking organization” within the meaning of the New York Banking Law;

a member of the Federal Reserve System;

a “clearing corporation” within the meaning of the New York Uniform Commercial Code; and

a “clearing agency” registered pursuant to the provisions of Section 17A of the Exchange Act.
DTC holds securities that its participants deposit with DTC. DTC also facilitates the settlement among its participants of securities transactions, such as transfers and pledges, in deposited securities through electronic computerized book-entry changes in participants’ accounts, thereby eliminating the need for physical movement of securities certificates. “Direct participants” in DTC include securities brokers and dealers, including underwriters, banks, trust companies, clearing corporations and other organizations. DTC is a wholly-owned subsidiary of The Depository Trust & Clearing Corporation, or DTCC. DTCC is the holding company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation, all of which are registered clearing agencies. DTCC is owned by the users of its regulated subsidiaries. Access to the DTC system is also available to others, which we sometimes refer to as indirect participants, that clear through or maintain a custodial relationship with a direct participant, either directly or indirectly. The rules applicable to DTC and its participants are on file with the SEC.
Purchases of securities under the DTC system must be made by or through direct participants, which will receive a credit for the securities on DTC’s records. The ownership interest of the actual purchaser of a security, which we sometimes refer to as a beneficial owner, is in turn recorded on the direct and indirect participants’ records. Beneficial owners of securities will not receive written confirmation from DTC of their purchases. However, beneficial owners are expected to receive written confirmations providing details of their transactions, as well as periodic statements of their holdings, from the direct or indirect participants through which they purchased securities. Transfers of ownership interests in global securities are to be accomplished by entries made on the books of participants acting on behalf of beneficial owners. Beneficial owners will not receive certificates representing their ownership interests in the global securities, except under the limited circumstances described below.
To facilitate subsequent transfers, all global securities deposited by direct participants with DTC will be registered in the name of DTC’s partnership nominee, Cede & Co., or such other name as may be requested by an authorized representative of DTC. The deposit of securities with DTC and their registration in the name of Cede & Co. or such other nominee will not change the beneficial ownership of the securities. DTC has no knowledge of the actual beneficial owners of the securities. DTC’s records reflect only the identity of the direct participants to whose accounts the securities are credited, which may or may not be the beneficial owners. The participants are responsible for keeping account of their holdings on behalf of their customers.
So long as the securities are in book-entry form, you will receive payments and may transfer securities only through the facilities of the depositary and its direct and indirect participants. We will maintain an office or agency in the location specified in the prospectus supplement for the applicable
 
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securities, where notices and demands in respect of the securities and the indenture may be delivered to us and where certificated securities may be surrendered for payment, registration of transfer or exchange.
Conveyance of notices and other communications by DTC to direct participants, by direct participants to indirect participants and by direct participants and indirect participants to beneficial owners will be governed by arrangements among them, subject to any legal requirements in effect from time to time.
Redemption notices will be sent to DTC. If less than all of the securities of a particular series are being redeemed, DTC’s practice is to determine by lot the amount of the interest of each direct participant in the securities of such series to be redeemed.
Neither DTC nor Cede & Co. (or such other DTC nominee) will consent or vote with respect to the securities. Under its usual procedures, DTC will mail an omnibus proxy to us as soon as possible after the record date. The omnibus proxy assigns the consenting or voting rights of Cede & Co. to those direct participants to whose accounts the securities of such series are credited on the record date, identified in a listing attached to the omnibus proxy.
So long as securities are in book-entry form, we will make payments on those securities to the depositary or its nominee, as the registered owner of such securities, by wire transfer of immediately available funds. If securities are issued in definitive certificated form under the limited circumstances described below and unless if otherwise provided in the description of the applicable securities herein or in the applicable prospectus supplement, we will have the option of making payments by check mailed to the addresses of the persons entitled to payment or by wire transfer to bank accounts in the United States designated in writing to the applicable trustee or other designated party at least 15 days before the applicable payment date by the persons entitled to payment, unless a shorter period is satisfactory to the applicable trustee or other designated party.
Redemption proceeds, distributions and dividend payments on the securities will be made to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC. DTC’s practice is to credit direct participants’ accounts upon DTC’s receipt of funds and corresponding detail information from us on the payment date in accordance with their respective holdings shown on DTC records. Payments by participants to beneficial owners will be governed by standing instructions and customary practices, as is the case with securities held for the account of customers in bearer form or registered in “street name.” Those payments will be the responsibility of participants and not of DTC or us, subject to any statutory or regulatory requirements in effect from time to time. Payment of redemption proceeds, distributions and dividend payments to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC, is our responsibility, disbursement of payments to direct participants is the responsibility of DTC, and disbursement of payments to the beneficial owners is the responsibility of direct and indirect participants.
Except under the limited circumstances described below, purchasers of securities will not be entitled to have securities registered in their names and will not receive physical delivery of securities. Accordingly, each beneficial owner must rely on the procedures of DTC and its participants to exercise any rights under the securities and the indenture.
The laws of some jurisdictions may require that some purchasers of securities take physical delivery of securities in definitive form. Those laws may impair the ability to transfer or pledge beneficial interests in securities.
DTC may discontinue providing its services as securities depositary with respect to the securities at any time by giving reasonable notice to us. Under such circumstances, in the event that a successor depositary is not obtained, securities certificates are required to be printed and delivered.
As noted above, beneficial owners of a particular series of securities generally will not receive certificates representing their ownership interests in those securities. However, if:

DTC notifies us that it is unwilling or unable to continue as a depositary for the global security or securities representing such series of securities or if DTC ceases to be a clearing agency
 
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registered under the Exchange Act at a time when it is required to be registered and a successor depositary is not appointed within 90 days of the notification to us or of our becoming aware of DTC’s ceasing to be so registered, as the case may be;

we determine, in our sole discretion, not to have such securities represented by one or more global securities; or

an Event of Default has occurred and is continuing with respect to such series of securities,
we will prepare and deliver certificates for such securities in exchange for beneficial interests in the global securities. Any beneficial interest in a global security that is exchangeable under the circumstances described in the preceding sentence will be exchangeable for securities in definitive certificated form registered in the names that the depositary directs. It is expected that these directions will be based upon directions received by the depositary from its participants with respect to ownership of beneficial interests in the global securities.
Euroclear and Clearstream
If so provided in the applicable prospectus supplement, you may hold interests in a global security through Clearstream Banking S.A., which we refer to as “Clearstream,” or Euroclear Bank S.A./N.V., as operator of the Euroclear System, which we refer to as “Euroclear,” either directly if you are a participant in Clearstream or Euroclear or indirectly through organizations which are participants in Clearstream or Euroclear. Clearstream and Euroclear will hold interests on behalf of their respective participants through customers’ securities accounts in the names of Clearstream and Euroclear, respectively, on the books of their respective U.S. depositaries, which in turn will hold such interests in customers’ securities accounts in such depositaries’ names on DTC’s books.
Clearstream and Euroclear are securities clearance systems in Europe. Clearstream and Euroclear hold securities for their respective participating organizations and facilitate the clearance and settlement of securities transactions between those participants through electronic book-entry changes in their accounts, thereby eliminating the need for physical movement of certificates.
Payments, deliveries, transfers, exchanges, notices and other matters relating to beneficial interests in global securities owned through Euroclear or Clearstream must comply with the rules and procedures of those systems. Transactions between participants in Euroclear or Clearstream, on one hand, and other participants in DTC, on the other hand, are also subject to DTC’s rules and procedures.
Investors will be able to make and receive through Euroclear and Clearstream payments, deliveries, transfers and other transactions involving any beneficial interests in global securities held through those systems only on days when those systems are open for business. Those systems may not be open for business on days when banks, brokers and other institutions are open for business in the United States.
Cross-market transfers between participants in DTC, on the one hand, and participants in Euroclear or Clearstream, on the other hand, will be effected through DTC in accordance with the DTC’s rules on behalf of Euroclear or Clearstream, as the case may be, by their respective U.S. depositaries; however, such cross-market transactions will require delivery of instructions to Euroclear or Clearstream, as the case may be, by the counterparty in such system in accordance with the rules and procedures and within the established deadlines (European time) of such system. Euroclear or Clearstream, as the case may be, will, if the transaction meets its settlement requirements, deliver instructions to its U.S. depositary to take action to effect final settlement on its behalf by delivering or receiving interests in the global securities through DTC, and making or receiving payment in accordance with normal procedures for same-day fund settlement. Participants in Euroclear or Clearstream may not deliver instructions directly to their respective U.S. depositaries.
Due to time zone differences, the securities accounts of a participant in Euroclear or Clearstream purchasing an interest in a global security from a direct participant in DTC will be credited, and any such crediting will be reported to the relevant participant in Euroclear or Clearstream, during the securities settlement processing day (which must be a business day for Euroclear or Clearstream)
 
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immediately following the settlement date of DTC. Cash received in Euroclear or Clearstream as a result of sales of interests in a global security by or through a participant in Euroclear or Clearstream to a direct participant in DTC will be received with value on the settlement date of DTC but will be available in the relevant Euroclear or Clearstream cash account only as of the business day for Euroclear or Clearstream following DTC’s settlement date.
Other
The information in this section of this prospectus concerning DTC, Clearstream, Euroclear and their respective book-entry systems has been obtained from sources that we believe to be reliable, but we do not take responsibility for this information. This information has been provided solely as a matter of convenience. The rules and procedures of DTC, Clearstream and Euroclear are solely within the control of those organizations and could change at any time. Neither we nor the trustee nor any agent of ours or of the trustee has any control over those entities and none of us takes any responsibility for their activities. You are urged to contact DTC, Clearstream and Euroclear or their respective participants directly to discuss those matters. In addition, although we expect that DTC, Clearstream and Euroclear will perform the foregoing procedures, none of them is under any obligation to perform or continue to perform such procedures and such procedures may be discontinued at any time. Neither we nor any agent of ours will have any responsibility for the performance or nonperformance by DTC, Clearstream and Euroclear or their respective participants of these or any other rules or procedures governing their respective operations.
 
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PLAN OF DISTRIBUTION
We may sell the securities from time to time pursuant to underwritten public offerings, negotiated transactions, block trades or a combination of these methods or through underwriters or dealers, through agents and/or directly to one or more purchasers. The securities may be distributed from time to time in one or more transactions:

at a fixed price or prices, which may be changed;

at market prices prevailing at the time of sale;

at prices related to such prevailing market prices; or

at negotiated prices.
Each time that we sell securities covered by this prospectus, we will provide a prospectus supplement or supplements that will describe the method of distribution and set forth the terms and conditions of the offering of such securities, including the offering price of the securities and the proceeds to us, if applicable.
Offers to purchase the securities being offered by this prospectus may be solicited directly. Agents may also be designated to solicit offers to purchase the securities from time to time. Any agent involved in the offer or sale of our securities will be identified in a prospectus supplement.
If a dealer is utilized in the sale of the securities being offered by this prospectus, the securities will be sold to the dealer, as principal. The dealer may then resell the securities to the public at varying prices to be determined by the dealer at the time of resale.
If an underwriter is utilized in the sale of the securities being offered by this prospectus, an underwriting agreement will be executed with the underwriter at the time of sale and the name of any underwriter will be provided in the prospectus supplement that the underwriter will use to make resales of the securities to the public. In connection with the sale of the securities, we or the purchasers of securities for whom the underwriter may act as agent, may compensate the underwriter in the form of underwriting discounts or commissions. The underwriter may sell the securities to or through dealers, and those dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters and/or commissions from the purchasers for which they may act as agent. Unless otherwise indicated in a prospectus supplement, an agent will be acting on a best efforts basis and a dealer will purchase securities as a principal, and may then resell the securities at varying prices to be determined by the dealer.
Any compensation paid to underwriters, dealers or agents in connection with the offering of the securities, and any discounts, concessions or commissions allowed by underwriters to participating dealers will be provided in the applicable prospectus supplement. Underwriters, dealers and agents participating in the distribution of the securities may be deemed to be underwriters within the meaning of the Securities Act of 1933, as amended, and any discounts and commissions received by them and any profit realized by them on resale of the securities may be deemed to be underwriting discounts and commissions. We may enter into agreements to indemnify underwriters, dealers and agents against civil liabilities, including liabilities under the Securities Act, or to contribute to payments they may be required to make in respect thereof and to reimburse those persons for certain expenses.
Any common stock or preferred stock will be listed on the Nasdaq Global Select Market, but any other securities may or may not be listed on a national securities exchange. To facilitate the offering of securities, certain persons participating in the offering may engage in transactions that stabilize, maintain or otherwise affect the price of the securities. This may include over-allotments or short sales of the securities, which involve the sale by persons participating in the offering of more securities than were sold to them. In these circumstances, these persons would cover such over-allotments or short positions by making purchases in the open market or by exercising their over-allotment option, if any. In addition, these persons may stabilize or maintain the price of the securities by bidding for or purchasing securities in the open market or by imposing penalty bids, whereby selling concessions allowed to dealers participating in the offering may be reclaimed if securities sold by them are repurchased in
 
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connection with stabilization transactions. The effect of these transactions may be to stabilize or maintain the market price of the securities at a level above that which might otherwise prevail in the open market. These transactions may be discontinued at any time.
We may engage in at the market offerings into an existing trading market in accordance with Rule 415(a)(4) under the Securities Act. In addition, we may enter into derivative transactions with third parties, or sell securities not covered by this prospectus to third parties in privately negotiated transactions. If the applicable prospectus supplement so indicates, in connection with those derivatives, the third parties may sell securities covered by this prospectus and the applicable prospectus supplement, including in short sale transactions. If so, the third party may use securities pledged by us or borrowed from us or others to settle those sales or to close out any related open borrowings of stock, and may use securities received from us in settlement of those derivatives to close out any related open borrowings of stock. The third party in such sale transactions will be an underwriter and, if not identified in this prospectus, will be named in the applicable prospectus supplement (or a post-effective amendment). In addition, we may otherwise loan or pledge securities to a financial institution or other third party that in turn may sell the securities short using this prospectus and an applicable prospectus supplement. Such financial institution or other third party may transfer its economic short position to investors in our securities or in connection with a concurrent offering of other securities.
The specific terms of any lock-up provisions in respect of any given offering will be described in the applicable prospectus supplement.
The underwriters, dealers and agents may engage in transactions with us, or perform services for us, in the ordinary course of business for which they receive compensation.
 
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LEGAL MATTERS
Latham & Watkins LLP will pass upon certain legal matters relating to the issuance and sale of the securities offered hereby on behalf of Menlo Therapeutics Inc. Additional legal matters may be passed upon for us or any underwriters, dealers or agents, by counsel that we will name in the applicable prospectus supplement.
EXPERTS
The financial statements of the Company as of December 31, 2017 and 2016 and the three years in the period ended December 31, 2017, have been incorporated by reference herein and in the registration statement in reliance upon the report of Mayer Hoffman McCann P.C., independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing.
 
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27,050,000 Shares
[MISSING IMAGE: LG_MENLOTHERAPEUTICS-4CLR.JPG]
Menlo Therapeutics Inc.
Common Stock
PROSPECTUS SUPPLEMENT
Joint Book-Running Managers
CowenPiper Sandler
Lead Manager
LifeSci Capital
June 4, 2020

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