MS-P Morgan Stanley

November 2024

Preliminary Pricing Supplement No. 4,917

Registration Statement Nos. 333-275587; 333-275587-01

Dated November 15, 2024

Filed pursuant to Rule 424(b)(2)

Morgan Stanley Finance LLC

Structured Investments

Opportunities in U.S. Equities

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

Fully and Unconditionally Guaranteed by Morgan Stanley

Equity-Linked Partial Principal at Risk Securities, which we refer to as the securities, are unsecured obligations of Morgan Stanley Finance LLC (“MSFL”) and are fully and unconditionally guaranteed by Morgan Stanley. The securities will pay no interest, provide for a minimum payment amount of only 90% of principal at maturity and have the terms described in the accompanying product supplement, index supplement and prospectus, as supplemented and modified by this document. At maturity, if the underlying index has appreciated in value, investors will receive the stated principal amount of their investment plus 117.00% of the appreciation of the underlying index from the initial index value to the final index value, subject to the maximum payment amount. However, if at maturity the underlying index has depreciated in value, investors will lose 1% for every 1% decline of the final index value from the initial index value, subject to the minimum payment amount. Investors may lose up to 10% of the stated principal amount of the securities. The securities are for investors who are concerned about principal risk, but seek an equity index-based return, and who are willing to risk 10% of their principal and to forgo current income and upside returns above the maximum payment amount in exchange for the repayment of at least 90% of the principal at maturity and the opportunity to earn a return reflecting 117.00% of the appreciation of the underlying index from the initial index value to the final index value, subject to the maximum payment amount. The securities are notes issued as part of MSFL’s Series A Global Medium-Term Notes program.

The underlying index measures the performance of the nearest maturing quarterly E-mini S&P 500 futures contract (the “futures contract”) trading on the Chicago Mercantile Exchange (the “CME”). The futures contract references the S&P 500® Index (the “reference index”). For more information about the S&P 500® Index, see the accompanying index supplement. For more information about the underlying index, see “Annex A—S&P 500® Futures Excess Return Index” beginning on page 15.

All payments on the securities, including the payment of the minimum payment amount at maturity, are subject to our credit risk. If we default on our obligations, you could lose some or all of your investment. These securities are not secured obligations and you will not have any security interest in, or otherwise have any access to, any underlying reference asset or assets.

(1)Selected dealers and their financial advisors will collectively receive from the agent, Morgan Stanley & Co. LLC, a fixed sales commission of $ for each security they sell. See “Supplemental information regarding plan of distribution; conflicts of interest.” For additional information, see “Plan of Distribution (Conflicts of Interest)” in the accompanying product supplement.

(2)See “Use of proceeds and hedging” on page 13.

The securities involve risks not associated with an investment in ordinary debt securities. See “Risk Factors” beginning on page 6.

The Securities and Exchange Commission and state securities regulators have not approved or disapproved these securities, or determined if this document or the accompanying product supplement, index supplement and prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The securities are not deposits or savings accounts and are not insured by the Federal Deposit Insurance Corporation or any other governmental agency or instrumentality, nor are they obligations of, or guaranteed by, a bank.

You should read this document together with the related product supplement, index supplement and prospectus, each of which can be accessed via the hyperlinks below. When you read the accompanying product supplement and index supplement, please note that all references in such supplements to the prospectus dated November 16, 2023, or to any sections therein, should refer instead to the accompanying prospectus dated April 12, 2024 or to the corresponding sections of such prospectus, as applicable. Please also see “Additional Terms of the Securities” and “Additional Information About the Securities” at the end of this document.

As used in this document, “we,” “us” and “our” refer to Morgan Stanley or MSFL, or Morgan Stanley and MSFL collectively, as the context requires.

Product Supplement for Equity-Linked Partial Principal at Risk Securities dated November 16, 2023

Index Supplement dated November 16, 2023    Prospectus dated April 12, 2024

Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

Investment Summary

Equity-Linked Partial Principal at Risk Securities

The Equity-Linked Partial Principal at Risk Securities due March 22, 2027 Based on the Performance of the S&P 500® Futures Excess Return Index (the “securities”) provide investors with an opportunity to receive a return reflecting 117.00% of the positive performance of the underlying index, subject to the maximum payment amount, while maintaining 1:1 downside exposure to any depreciation of the underlying index, subject to the minimum payment amount at maturity of $900 per security.

If the final index value is greater than the initial index value, the securities will pay the stated principal amount of $1,000 plus a supplemental redemption amount, subject to the maximum payment amount of at least $1,561.60 per security (to be determined on the pricing date). The supplemental redemption amount provides 117.00% upside participation (e.g., if the underlying index appreciates 5% from the initial index value to the final index value, the investor receives 100% of principal plus 5.85% at maturity) in the performance of the underlying index, subject to the maximum payment amount. If the final index value is equal to or less than the initial index value, the payment at maturity per security will be equal to or less than the $1,000 principal amount of securities by an amount proportionate to the decline in the underlying index as of the determination date, subject to the minimum payment amount of $900 per security. The securities do not pay interest, and all payments on the securities, including the payment of the minimum payment amount at maturity, are subject to our credit risk.

The original issue price of each security is $1,000. This price includes costs associated with issuing, selling, structuring and hedging the securities, which are borne by you, and, consequently, the estimated value of the securities on the pricing date will be less than $1,000. We estimate that the value of each security on the pricing date will be approximately $964.70, or within $35.00 of that estimate. Our estimate of the value of the securities as determined on the pricing date will be set forth in the final pricing supplement.

What goes into the estimated value on the pricing date?

In valuing the securities on the pricing date, we take into account that the securities comprise both a debt component and a performance-based component linked to the underlying index. The estimated value of the securities is determined using our own pricing and valuation models, market inputs and assumptions relating to the underlying index, instruments based on the underlying index, volatility and other factors including current and expected interest rates, as well as an interest rate related to our secondary market credit spread, which is the implied interest rate at which our conventional fixed rate debt trades in the secondary market.

What determines the economic terms of the securities?

In determining the economic terms of the securities, including the minimum payment amount, the maximum payment amount and the participation rate, we use an internal funding rate, which is likely to be lower than our secondary market credit spreads and therefore advantageous to us. If the issuing, selling, structuring and hedging costs borne by you were lower or if the internal funding rate were higher, one or more of the economic terms of the securities would be more favorable to you.

What is the relationship between the estimated value on the pricing date and the secondary market price of the securities?

The price at which MS & Co. purchases the securities in the secondary market, absent changes in market conditions, including those related to the underlying index, may vary from, and be lower than, the estimated value on the pricing date, because the secondary market price takes into account our secondary market credit spread as well as the bid-offer spread that MS & Co. would charge in a secondary market transaction of this type and other factors. However, because the costs associated with issuing, selling, structuring and hedging the securities are not fully deducted upon issuance, for a period of up to 6 months following the issue date, to the extent that MS & Co. may buy or sell the securities in the secondary market, absent changes in market conditions, including those related to the underlying

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

index, and to our secondary market credit spreads, it would do so based on values higher than the estimated value. We expect that those higher values will also be reflected in your brokerage account statements.

MS & Co. may, but is not obligated to, make a market in the securities, and, if it once chooses to make a market, may cease doing so at any time.

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

Key Investment Rationale

The securities offer 117.00% participation in the positive performance of the underlying index, subject to the maximum payment amount, while providing for a minimum repayment of 90% of the stated principal amount if the securities are held to maturity, in exchange for forgoing current income and interest. All payments on the securities, including the payment of the minimum payment amount at maturity, are subject to our credit risk.

November 2024 Page 4

Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

How the Securities Work

Payoff Diagram

The payoff diagram below illustrates the payment at maturity on the securities, based on the following terms:

How it works

◼Upside Scenario. If the final index value is greater than the initial index value, investors would receive the $1,000 stated principal amount plus 117.00% participation in the appreciation of the underlying index, subject to the hypothetical maximum payment amount of $1,561.60 per security (156.16% of the stated principal amount).

oIf the underlying index appreciates 5%, investors would receive a 5.85% return, or $1,058.50 per security.

oIf the underlying index appreciates 100%, investors would receive only the hypothetical maximum payment amount of $1,561.60 per security.

◼Par or Downside Scenario. If the final index value is less than or equal to the initial index value, investors would receive an amount less than or equal to the $1,000 stated principal amount, based on a 1% loss of principal for each 1% decline in the underlying index over the term of the securities, subject to the minimum payment amount of $900 per security.

oIf the underlying index depreciates 1.50% from the initial index value to the final index value, investors would lose 1.50% of their principal and receive only $985 per security at maturity, or 98.50% of the stated principal amount.

oIf the underlying index depreciates 50% from the initial index value to the final index value, investors would receive the minimum payment amount of $900 per security at maturity, or 90% of the stated principal amount.

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

Risk Factors

This section describes the material risks relating to the securities. For further discussion of these and other risks, you should read the section entitled “Risk Factors” in the accompanying product supplement, index supplement and prospectus. We also urge you to consult with your investment, legal, tax, accounting and other advisers in connection with your investment in the securities.

Risks Relating to an Investment in the Securities

◼The securities do not pay interest and provide for a minimum payment amount of only 90% of principal. The terms of the securities differ from those of ordinary debt securities in that the securities do not pay interest and provide for a minimum payment amount of only 90% of principal at maturity. If the underlying index has depreciated over the term of the securities, the payout at maturity will be an amount in cash that is less than the $1,000 stated principal amount of each security by an amount proportionate to the decrease in the value of the underlying index, subject to the minimum payment amount of $900 per security (90% of the stated principal amount). You could lose up to 10% of your investment in the securities.

◼The appreciation potential of the securities is limited by the maximum payment amount. The appreciation potential of the securities is limited by the maximum payment amount of at least $1,561.60 per security, or 156.16% of the stated principal amount. Because the payment at maturity will be limited to 156.16% of the stated principal amount for the securities (assuming a maximum payment amount of $1,561.60 per security), any increase in the final index value over the initial index value by more than 48.00% of the initial index value will not further increase the return on the securities.

◼The market price of the securities will be influenced by many unpredictable factors. Several factors, many of which are beyond our control, will influence the value of the securities in the secondary market and the price at which MS & Co. may be willing to purchase or sell the securities in the secondary market, including the value of the underlying index at any time, the volatility (frequency and magnitude of changes in value) of the reference index, dividend rate on the stocks underlying the index, interest and yield rates in the market, time remaining until the securities mature, geopolitical conditions and economic, financial, political, regulatory or judicial events that affect the futures contract, the reference index or equities markets generally and which may affect the final index value of the underlying index and any actual or anticipated changes in our credit ratings or credit spreads. Generally, the longer the time remaining to maturity, the more the market price of the securities will be affected by the other factors described above. The value of the underlying index may be, and has recently been, volatile, and we can give you no assurance that the volatility will lessen. See “S&P 500® Futures Excess Return Index Overview” below. You may receive less, and possibly significantly less, than the stated principal amount per security if you try to sell your securities prior to maturity.

◼The securities are subject to our credit risk, and any actual or anticipated changes to our credit ratings or credit spreads may adversely affect the market value of the securities. You are dependent on our ability to pay all amounts due on the securities at maturity and therefore you are subject to our credit risk. If we default on our obligations under the securities, your investment would be at risk and you could lose some or all of your investment. As a result, the market value of the securities prior to maturity will be affected by changes in the market’s view of our creditworthiness. Any actual or anticipated decline in our credit ratings or increase in the credit spreads charged by the market for taking our credit risk is likely to adversely affect the market value of the securities.

◼As a finance subsidiary, MSFL has no independent operations and will have no independent assets. As a finance subsidiary, MSFL has no independent operations beyond the issuance and administration of its securities and will have no independent assets available for distributions to holders of MSFL securities if they make claims in respect of such securities in a bankruptcy, resolution or similar proceeding. Accordingly, any recoveries by such holders will be limited to those available under the related guarantee by Morgan Stanley and that guarantee will rank pari passu with all other unsecured, unsubordinated obligations of Morgan Stanley. Holders will have recourse only to a single claim against Morgan Stanley and its assets under the guarantee. Holders of securities issued by MSFL should

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

accordingly assume that in any such proceedings they would not have any priority over and should be treated pari passu with the claims of other unsecured, unsubordinated creditors of Morgan Stanley, including holders of Morgan Stanley-issued securities.

◼The amount payable on the securities is not linked to the value of the underlying index at any time other than the determination date. The final index value will be based on the index closing value on the determination date, subject to postponement for non-index business days and certain market disruption events. Even if the value of the underlying index appreciates prior to the determination date but then drops by the determination date to be equal to or below the initial index value, the payment at maturity will be less, and may be significantly less, than it would have been had the payment at maturity been linked to the value of the underlying index prior to such drop. Although the actual value of the underlying index on the stated maturity date or at other times during the term of the securities may be higher than the final index value, the payment at maturity will be based solely on the index closing value on the determination date.

◼The rate we are willing to pay for securities of this type, maturity and issuance size is likely to be lower than the rate implied by our secondary market credit spreads and advantageous to us. Both the lower rate and the inclusion of costs associated with issuing, selling, structuring and hedging the securities in the original issue price reduce the economic terms of the securities, cause the estimated value of the securities to be less than the original issue price and will adversely affect secondary market prices. Assuming no change in market conditions or any other relevant factors, the prices, if any, at which dealers, including MS & Co., may be willing to purchase the securities in secondary market transactions will likely be significantly lower than the original issue price, because secondary market prices will exclude the issuing, selling, structuring and hedging-related costs that are included in the original issue price and borne by you and because the secondary market prices will reflect our secondary market credit spreads and the bid-offer spread that any dealer would charge in a secondary market transaction of this type as well as other factors.

The inclusion of the costs of issuing, selling, structuring and hedging the securities in the original issue price and the lower rate we are willing to pay as issuer make the economic terms of the securities less favorable to you than they otherwise would be.

However, because the costs associated with issuing, selling, structuring and hedging the securities are not fully deducted upon issuance, for a period of up to 6 months following the issue date, to the extent that MS & Co. may buy or sell the securities in the secondary market, absent changes in market conditions, including those related to the underlying index, and to our secondary market credit spreads, it would do so based on values higher than the estimated value, and we expect that those higher values will also be reflected in your brokerage account statements.

￭The estimated value of the securities is determined by reference to our pricing and valuation models, which may differ from those of other dealers and is not a maximum or minimum secondary market price. These pricing and valuation models are proprietary and rely in part on subjective views of certain market inputs and certain assumptions about future events, which may prove to be incorrect. As a result, because there is no market-standard way to value these types of securities, our models may yield a higher estimated value of the securities than those generated by others, including other dealers in the market, if they attempted to value the securities. In addition, the estimated value on the pricing date does not represent a minimum or maximum price at which dealers, including MS & Co., would be willing to purchase your securities in the secondary market (if any exists) at any time. The value of your securities at any time after the date of this pricing supplement will vary based on many factors that cannot be predicted with accuracy, including our creditworthiness and changes in market conditions. See also “The market price of the securities will be influenced by many unpredictable factors” above.

￭Investing in the securities is not equivalent to investing in the underlying index. Investing in the securities is not equivalent to investing in the underlying index, the futures contract or the component stocks of the reference index. Investors in the securities will not have voting rights or rights to receive dividends or other distributions or any other rights with respect to the component stocks of the reference index.

￭The securities will not be listed on any securities exchange and secondary trading may be limited. The securities will not be listed on any securities exchange. Therefore, there may be little or no secondary

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

market for the securities. MS & Co. may, but is not obligated to, make a market in the securities, and, if it once chooses to make a market, may cease doing so at any time. When it does make a market, it will generally do so for transactions of routine secondary market size at prices based on its estimate of the current value of the securities, taking into account its bid/offer spread, our credit spreads, market volatility, the notional size of the proposed sale, the cost of unwinding any related hedging positions, the time remaining to maturity and the likelihood that it will be able to resell the securities. Even if there is a secondary market, it may not provide enough liquidity to allow you to trade or sell the securities easily. Because we do not expect that other broker-dealers will participate significantly in the secondary market for the securities, the price at which you may be able to trade your securities is likely to depend on the price, if any, at which MS & Co. is willing to transact. If, at any time, MS & Co. were to cease making a market in the securities, it is likely that there would be no secondary market for the securities. Accordingly, you should be willing to hold your securities to maturity.

◼The calculation agent, which is a subsidiary of Morgan Stanley and an affiliate of MSFL, will make determinations with respect to the securities. As calculation agent, MS & Co. will determine the initial index value and the final index value, and will calculate the amount of cash you will receive at maturity. Moreover, certain determinations made by MS & Co., in its capacity as calculation agent, may require it to exercise discretion and make subjective judgments, such as with respect to the occurrence or non-occurrence of market disruption events and the selection of a successor index or calculation of the index closing value in the event of a discontinuance of the underlying index or a market disruption event, may adversely affect the payout to you at maturity. For further information regarding these types of determinations, see “Description of Equity-Linked Partial Principal at Risk Securities —Supplemental Redemption Amount,” “—Calculation Agent and Calculations,” “—Alternate Exchange Calculation in the Case of an Event of Default” and “—Discontinuance of Any Underlying Index; Alteration of Method of Calculation” in the accompanying product supplement. In addition, MS & Co. has determined the estimated value of the securities on the pricing date.

◼Hedging and trading activity by our affiliates could potentially adversely affect the value of the securities. One or more of our affiliates and/or third-party dealers expect to carry out hedging activities related to the securities (and to other instruments linked to the underlying index, the futures contract or the component stocks of the reference index), including trading in the futures contract and the stocks that constitute the reference index as well as in other instruments related to the underlying index. As a result, these entities may be unwinding or adjusting hedge positions during the term of the securities, and the hedging strategy may involve greater and more frequent dynamic adjustments to the hedge as the determination date approaches. MS & Co. and some of our affiliates also trade the stocks that constitute the reference index and other financial instruments related to the underlying index on a regular basis as part of their general broker-dealer and other businesses. Any of these hedging or trading activities on or prior to the pricing date could potentially increase the initial index value, and, therefore, the value at or above which the underlying index must close on the determination date so that investors do not suffer a loss on their initial investment in the securities. Additionally, such hedging or trading activities during the term of the securities, including on the determination date, could adversely affect the value of the underlying index on the determination date, and, accordingly, the amount of cash an investor will receive at maturity.

Risks Relating to the Underlying Index

◼Higher future prices of the futures contract to which the underlying index is linked relative to its current prices may adversely affect the value of the underlying index and the value of the securities. The underlying index is linked to the E-mini S&P 500 futures contract currently listed for trading on the CME. As the relevant futures contract approaches expiration, it is replaced by a contract that has a later expiration. Thus, for example, a contract purchased and held in September may specify a December expiration. As time passes, the contract expiring in December is replaced by a contract for delivery in March. This process is referred to as “rolling.” If the market for these contracts is (putting aside other considerations) in “backwardation,” where the prices are lower in the distant delivery months than in the nearer delivery months, the sale of the December contract would take place at a price that is higher than the price of the March contract, thereby creating a “roll yield.” While many futures contracts have historically exhibited consistent periods of backwardation, backwardation will most likely not exist at all

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

times. It is also possible for the market for these contracts to be in “contango.” Contango markets are those in which the prices of contracts are higher in the distant delivery months than in the nearer delivery months. The presence of contango and absence of backwardation in the market for these contracts could result in negative “roll yields,” which could adversely affect the value of the underlying index, and, accordingly, the value of the securities.

◼Suspensions or disruptions of market trading in futures markets could adversely affect the price of the securities. Securities markets and futures markets are subject to temporary distortions or other disruptions due to various factors, including the lack of liquidity in the markets, the participation of speculators and government regulation and intervention. In addition, U.S. futures exchanges and some foreign exchanges have regulations that limit the amount of fluctuation in futures contract prices which may occur during a single business day. These limits are generally referred to as “daily price fluctuation limits” and the maximum or minimum price of a contract on any given day as a result of these limits is referred to as a “limit price.” Once the limit price has been reached in a particular contract, no trades may be made at a different price. Limit prices have the effect of precluding trading in a particular contract or forcing the liquidation of contracts at disadvantageous times or prices. These circumstances could adversely affect the value of the underlying index, and, therefore, the value of the securities.

◼Legal and regulatory changes could adversely affect the return on and value of your securities. Futures contracts and options on futures contracts, including those related to the underlying index, are subject to extensive statutes, regulations, and margin requirements. The Commodity Futures Trading Commission, commonly referred to as the "CFTC," and the exchanges on which such futures contracts trade, are authorized to take extraordinary actions in the event of a market emergency, including, for example, the retroactive implementation of speculative position limits or higher margin requirements, the establishment of daily limits and the suspension of trading. Furthermore, certain exchanges have regulations that limit the amount of fluctuations in futures contract prices that may occur during a single five-minute trading period. These limits could adversely affect the market prices of relevant futures and options contracts and forward contracts.

◼Adjustments to the underlying index could adversely affect the value of the securities. The publisher of the underlying index can make methodological changes required by certain events relating to the underlying stocks, such as stock dividends, stock splits, spin-offs, rights offerings and extraordinary dividends, that could change the value of the underlying index. Any of these actions could adversely affect the value of the securities. The publisher of the underlying index may also discontinue or suspend calculation or publication of the underlying index at any time. In these circumstances, MS & Co., as the calculation agent, will have the sole discretion to substitute a successor index that is comparable to the discontinued index. MS & Co. could have an economic interest that is different than that of investors in the securities insofar as, for example, MS & Co. is permitted to consider indices that are calculated and published by MS & Co. or any of its affiliates.

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

S&P 500® Futures Excess Return Index Overview

The S&P 500® Futures Excess Return Index, which is calculated, maintained and published by S&P® Dow Jones Indices LLC (“S&P®”), measures the performance of the nearest maturing quarterly E-mini S&P 500 futures contracts trading on the Chicago Mercantile Exchange. E-mini S&P 500 futures contracts are U.S. dollar-denominated futures contracts based on the performance of the S&P 500® Index. For additional information about the S&P 500® Index and how it is calculated and maintained, see “S&P® U.S. Indices—S&P 500® Index” in the accompanying index supplement. For additional information about the S&P 500® Futures Excess Return Index, see “Annex A — S&P 500® Futures Excess Return Index” below.

Information as of market close on November 14, 2024:

The following graph sets forth the daily closing values of the underlying index for the period from January 1, 2019 through November 14, 2024. The related table sets forth the published high and low closing values, as well as end-of-quarter closing values, of the underlying index for each quarter in the same period. The closing value of the underlying index on November 14, 2024 was 506.58. We obtained the information in the graph and table below from Bloomberg Financial Markets, without independent verification. The underlying index has at times experienced periods of high volatility, and you should not take the historical values of the underlying index as an indication of its future performance.

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

“Standard & Poor’s®,” “S&P®,” “S&P 500®,” “Standard & Poor’s 500” and “500” are trademarks of Standard and Poor’s Financial Services LLC. See “Annex A — S&P 500® Futures Excess Return Index” below.

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

Additional Terms of the Securities

Please read this information in conjunction with the terms on the front cover of this document.

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

Additional Information About the Securities

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

Annex A — S&P 500® Futures Excess Return Index

The S&P 500® Futures Excess Return Index (the “underlying index”) is an equity futures index calculated, maintained and published by S&P® Dow Jones Indices LLC (“S&P®”). S&P® is a joint venture between S&P® Global, Inc. (majority owner) and CME Group Inc. (minority owner), owner of CME Group Index Services LLC. The underlying index is reported by Bloomberg under the ticker symbol “SPXFP.” All information contained in this document regarding the underlying index has been derived from publicly available information, without independent verification.

The underlying index is the excess return version of the S&P 500 Futures Index, which measures the performance of the nearest maturing quarterly E-mini S&P 500 futures contract trading on the Chicago Mercantile Exchange (“CME”). The underlying index includes a provision for the replacement of the E-mini futures contract as the contract approaches maturity (also referred to as “rolling” or “the roll”). This replacement occurs over a one-day rolling period every March, June, September and December, effective after the close of trading five business days preceding the last trading date of the E-mini S&P futures contract.

E-Mini S&P 500 Futures Contract

The underlying index is constructed from the front-month E-mini S&P 500 futures contract (the “futures contract”). Futures contracts are contracts that legally obligate the holder to buy or sell an asset at a predetermined delivery price during a specified future time period. The futures contract is rolled forward once a quarter, with one-third of the contract being rolled forward on each of the fourth, third, and second day prior to expiration.

The E-mini S&P 500 futures (“ES”) contracts are U.S. dollar-denominated futures contracts, based on the S&P 500® Index (the “reference index”), traded on the CME, representing a contract unit of $50 multiplied by the reference index, measured in cents per index point. The ES contracts listed for the nearest nine quarters, for each March, June, September and December, and the nearest three Decembers are available for trading. Trading of the ES contracts terminates at 9:30 A.M. Eastern time on the third Friday of the contract month. The daily settlement prices of the ES contracts are based on trading activity in the relevant contract (and in the case of a lead month also being the expiry month, together with trading activity on lead month-second month spread contracts) on the CME during a specified settlement period. The final settlement price of ES contracts is based on the opening prices of the component stocks in the reference index, determined on the third Friday of the contract month. For more information about the reference index, see “S&P® U.S. Indices—S&P 500® Index” in the accompanying index supplement.

Underlying Index Calculation

The underlying index, calculated from the price change of the futures contract, reflects the excess return of the S&P 500 Futures Index. The level of the underlying index on a trading day is calculated as follows:

IndexERd = IndexERd-1 × (1 + CDRd)

where:

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Morgan Stanley Finance LLC

Equity-Linked Partial Principal at Risk Securities due March 22, 2027

Based on the Performance of the S&P 500® Futures Excess Return Index

The underlying index is calculated on an excess return basis, meaning that the level of the underlying index is determined by its weighted return reduced by the return that could be earned on a notional cash deposit at the notional interest rate, which is a rate equal to the federal funds rate.

Overview of Futures Markets

Futures contracts are traded on regulated futures exchanges, in the over-the-counter market and on various types of electronic trading facilities and markets. As of the date of this pricing supplement, the futures contract is an exchange-traded futures contract. A futures contract provides for a specified settlement month in which the cash settlement is made by the seller (whose position is therefore described as “short”) and acquired by the purchaser (whose position is therefore described as “long”).

No purchase price is paid or received on the purchase or sale of a futures contract. Instead, an amount of cash or cash equivalents must be deposited with the broker as “initial margin.” This amount varies based on the requirements imposed by the exchange clearing houses, but it may be lower than 5% of the notional value of the contract. This margin deposit provides collateral for the obligations of the parties to the futures contract.

By depositing margin, which may vary in form depending on the exchange, with the clearing house or broker involved, a market participant may be able to earn interest on its margin funds, thereby increasing the total return that it may realize from an investment in futures contracts. However, the underlying index is not a total return index and does not reflect interest that could be earned on funds notionally committed to the trading of futures contracts.

At any time prior to the expiration of a futures contract, a trader may elect to close out its position by taking an opposite position on the exchange on which the trader obtained the position, subject to the availability of a liquid secondary market. This operates to terminate the position and fix the trader’s profit or loss. Futures contracts are cleared through the facilities of a centralized clearing house and a brokerage firm that is a member of the clearing house. Futures exchanges may adopt rules and take other actions that affect trading, including imposing speculative position limits, maximum price fluctuations and trading halts and suspensions and requiring liquidation of contracts in certain circumstances.

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S&P® DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE S&P 500® FUTURES EXCESS RETURN INDEX, THE S&P 500® INDEX OR ANY DATA INCLUDED THEREIN. S&P® MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY MORGAN STANLEY, OWNERS OF THE NOTES, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE S&P 500® FUTURES EXCESS RETURN INDEX, THE S&P 500® INDEX OR ANY DATA INCLUDED THEREIN. S&P® MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND HEREBY EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE S&P 500® FUTURES EXCESS RETURN INDEX, THE S&P 500® INDEX OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL S&P® HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, INDIRECT OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS), EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

“Standard & Poor’s®,” “S&P®,” “S&P 500®,” “Standard & Poor’s 500” and “500” are trademarks of Standard and Poor’s Financial Services LLC.

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