Form 10-Q - Quarterly report [Sections 13 or 15(d)]

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)


☒			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2024


☐			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ____ to ____

Commission File Number 001-33351

_________________________________________________

NEUROMETRIX, INC.

(Exact name of registrant as specified in its charter)


Delaware			04-3308180
(State or other jurisdiction of			(I.R.S. Employer Identification No.)
incorporation or organization)

4B Gill Street Woburn, Massachusetts			01801
(Address of principal executive offices)			(Zip Code)

(781) 890-9989

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of exchange on which registered
Common Stock, $0.0001 par value per share	NURO	The Nasdaq Stock Market LLC
Preferred Stock Purchase Rights

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definition of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

Large accelerated filer

Accelerated filer

Non-accelerated filer

Smaller reporting company

Emerging growth company

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ☐ No x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date: 2,025,874 shares of common stock, par value $0.0001 per share, were outstanding as of August 5, 2024.

NeuroMetrix, Inc.

Form 10-Q

Quarterly Period Ended June 30, 2024

TABLE OF CONTENTS


PART I – FINANCIAL INFORMATION

Item 1.	Financial Statements:

	Balance Sheets as of June 30, 2024 (unaudited) and December 31, 2023	1

	Statements of Operations (unaudited) for the Quarters and Six Months Ended June 30, 2024 and 2023	2

	Statements of Comprehensive Loss (unaudited) for the Quarters Ended June 30, 2024 and 2023	2

	Statements of Changes in Stockholders' Equity (unaudited) for the Quarters and Six Months Ended June 30, 2024 and 2023	3

	Statements of Cash Flows (unaudited) for the Six Months Ended June 30, 2024 and 2023	4

	Notes to Unaudited Financial Statements	5

Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	12

Item 3.	Quantitative and Qualitative Disclosures About Market Risk	18

Item 4.	Controls and Procedures	19

PART II – OTHER INFORMATION

Item 1.	Legal Proceedings	20

Item 1A.	Risk Factors	20

Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	20

Item 3.	Defaults Upon Senior Securities	20

Item 4.	Mine Safety Disclosures	20

Item 5.	Other Information	20

Item 6.	Exhibits	21

Signatures		22

All share amounts in the Quarterly Report on Form 10-Q have been adjusted to reflect a 1-for-8 reverse stock split that was effected on November 21, 2023.

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

NeuroMetrix, Inc.

Balance Sheets


	June 30, 2024		December 31, 2023
	(Unaudited)
Assets
Current assets:
Cash and cash equivalents	$	1,606,974	$	1,731,946

Available-for-sale securities	14,822,982		16,265,205
Accounts receivable, net	280,566		518,824
Inventories	1,450,405		1,559,428

Prepaid expenses and other current assets	315,662		779,039
Total current assets	18,476,589		20,854,442

Fixed assets, net	243,634		293,449
Right of use asset	183,160		250,150
Other long-term assets	26,400		26,400
Total assets	$	18,929,783	$	21,424,441

Liabilities and Stockholders’ Equity
Current liabilities:

Accounts payable	$	314,000	$	215,509

Accrued expenses and compensation	1,127,359		876,739

Lease obligation, current	148,391		148,391
Total current liabilities	1,589,750		1,240,639

Lease obligation, net of current portion	28,210		92,485
Total liabilities	1,617,960		1,333,124

Commitments and contingencies

Stockholders’ equity:
Preferred stock	—		—
Convertible preferred stock	1		1
Common stock, $0.0001 par value; 25,000,000 shares authorized at June 30, 2024 and December 31, 2023; 2,016,537 and 1,524,939 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	202		152
Additional paid-in capital	231,826,308		229,960,346
Accumulated other comprehensive income	112,171		240,171
Accumulated deficit	(214,626,859)		(210,109,353)
Total stockholders’ equity	17,311,823		20,091,317
Total liabilities and stockholders’ equity	$	18,929,783	$	21,424,441

The accompanying notes are an integral part of these interim financial statements.

NeuroMetrix, Inc.

Statements of Operations

(Unaudited)


	Quarters Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023

Revenues	$	769,148	$	1,655,744	$	1,862,704	$	3,380,515

Cost of revenues	277,229		536,486		853,768		1,062,858

Gross profit	491,919		1,119,258		1,008,936		2,317,657

Operating expenses:
Research and development	266,932		753,509		1,210,484		1,452,934
Sales and marketing	435,014		744,963		1,496,743		1,560,835
General and administrative	1,618,628		1,244,241		3,384,355		2,637,412

Total operating expenses	2,320,574		2,742,713		6,091,582		5,651,181

Loss from operations	(1,828,655)		(1,623,455)		(5,082,646)		(3,333,524)

Other income:
Interest income	13,005		86,426		32,167		222,321
Other income	327,718		—		532,973		—

Total other income	340,723		86,426		565,140		222,321

Net loss	$	(1,487,932)	$	(1,537,029)	$	(4,517,506)	$	(3,111,203)








Net loss per common share applicable to common stockholders, basic and diluted	$	(0.74)	$	(1.56)	$	(2.37)	$	(3.20)


Weighted average number of common shares outstanding, basic and diluted	2,001,400		985,719		1,906,927		973,504

Statements of Comprehensive Loss

(Unaudited)


	Quarters Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023

Net loss	$	(1,487,932)	$	(1,537,029)	$	(4,517,506)	$	(3,111,203)

Other comprehensive income:

Unrealized gain on available-for-sale securities, net	192,712		102,847		404,973		168,721
Reclassification of realized gain on available-for-sale securities to other income	$	(327,718)	$	—	$	(532,973)	$	—

Comprehensive loss	$	(1,622,938)	$	(1,434,182)	$	(4,645,506)	$	(2,942,482)

The accompanying notes are an integral part of these interim financial statements.

NeuroMetrix, Inc.

Statements of Changes in Stockholders' Equity

(Unaudited)


	Series B Convertible Preferred Stock			Common Stock			Additional Paid-In Capital		Accumulated Other Comprehensive Income		Accumulated Deficit		Total
	Number of Shares	Amount		Number of Shares	Amount
Balance at December 31, 2023	200.00	$	1	1,518,717	$	152	$	229,960,346	$	240,171	$	(210,109,353)	$	20,091,317
Stock-based compensation expense	—	—		—	$	—	216,164		—		—		216,164
Issuance of common stock under at the market offering	—	—		458,380	$	46	1,471,053		—		—		1,471,099
Vesting of restricted stock under equity plan	—	—		6,699	$	1	(1)		—		—		—
Unrealized gain on available-for-sale securities	—	—		—	$	—	—		212,261		—		212,261
Realized gain on available-for-sale securities	—	—		—	$	—	—		(205,255)		—		(205,255)
Net loss	—	—		—	$	—	—		—		(3,029,574)		(3,029,574)
Balance at March 31, 2024	200.00	1		1,983,796	199		231,647,562		247,177		(213,138,927)		18,756,012
Stock-based compensation expense	—	—		—	—		176,148		—		—		176,148
Issuance of common stock under employee stock purchase plan	—	—		850	—		2,601		—		—		2,601
Vesting of restricted stock under equity plan	—	—		29,453	3		(3)		—		—		—
Unrealized gain on available-for-sale securities	—	—		—	—		—		192,712		—		192,712
Realized gain on available-for-sale securities	—	—		—	—		—		(327,718)		—		(327,718)
Net loss	—	—		—	—		—		—		(1,487,932)		(1,487,932)
Balance at June 30, 2024	200	$	1	2,014,099	$	202	$	231,826,308	$	112,171	$	(214,626,859)	$	17,311,823

	Series B Convertible Preferred Stock			Common Stock			Additional Paid-In Capital		Accumulated Other Comprehensive Income		Accumulated Deficit		Total
	Number of Shares	Amount		Number of Shares	Amount
Balance at December 31, 2022	200.00	$	1	959,460	$	96	$	226,935,456	$	—	$	(203,579,866)	$	23,355,687
Stock-based compensation expense	—	—		—	—		165,361		—		—		165,361
Vesting of restricted stock under equity plan	—	—		2,439	—		—		—		—		—
Unrealized gain on available-for-sale securities	—	—		—	—		—		65,874		—		65,874
Net loss	—	—		—	—		—		—		(1,574,174)		(1,574,174)
Balance at March 31, 2023	200.00	1		961,899	96		227,100,817		65,874		(205,154,040)		22,012,748
Stock-based compensation	—	—		—	—		132,745		—		—		132,745
Issuance of common stock under at the market offering	—	—		90,661	9		691,396		—		—		691,405
Issuance common stock under employee stock purchase plan	—	—		1,316	—		8,713		—		—		8,713
Vesting of restricted stock under equity plan	—	—		9,015	1		(1)		—		—		—
Unrealized gain on available-for-sale securities	—	—		—	—		—		102,847		—		102,847
Net loss	—	—		—	—		—		—		(1,537,029)		(1,537,029)
Balance at June 30, 2023	200	$	1	1,062,891	$	106	$	227,933,670	$	168,721	$	(206,691,069)	$	21,411,429

The accompanying notes are an integral part of these interim financial statements.

NeuroMetrix, Inc.

Statements of Cash Flows

(Unaudited)


	Six Months Ended June 30,
	2024		2023
Cash flows from operating activities:
Net loss	$	(4,517,506)	$	(3,111,203)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	49,815		20,444
Amortization of right-of-use assets, operating lease	66,990		58,087
Stock-based compensation	392,312		298,106

Inventory reserve charged to cost of revenue	74,209		63,420

Amortization of premiums and discounts on held-to-maturity securities	—		(131,127)
Realized gain on available-for-sale securities	(532,973)		—
Changes in operating assets and liabilities:
Accounts receivable	238,258		(99,954)
Inventories	34,814		(32,418)

Prepaid expenses and other current and long-term assets	463,377		254,015
Accounts payable	98,491		(186,620)
Accrued expenses and compensation	250,620		350,137
Operating lease liability	(64,275)		(55,373)
Net cash used in operating activities	(3,445,868)		(2,572,486)

Cash flows from investing activities:

Purchases of available-for-sale securities	(18,652,804)		(16,599,705)
Proceeds from maturities of available-for-sale securities	20,500,000		—
Proceeds from maturities of held-to-maturity securities	—		16,000,000

Net cash provided by (used in) investing activities	1,847,196		(599,705)

Cash flows from financing activities:
Net proceeds from issuance of stock	1,473,700		700,120


Net cash provided by financing activities	1,473,700		700,120

Net decrease in cash and cash equivalents	(124,972)		(2,472,071)
Cash and cash equivalents, beginning of period	1,731,946		4,335,020
Cash and cash equivalents, end of period	$	1,606,974	$	1,862,949

The accompanying notes are an integral part of these interim financial statements.

NeuroMetrix, Inc.

Notes to Unaudited Financial Statements

June 30, 2024

1.Business and Basis of Presentation

Our Business-An Overview

NeuroMetrix, Inc. (the "Company" or "NeuroMetrix") develops and commercializes health care products that utilize non-invasive neurostimulation. Revenues are derived from the sale of medical devices and after-market consumable products and accessories. The Company’s products are sold in the United States and select overseas markets. They are cleared by the U.S. Food and Drug Administration ("FDA") and regulators in foreign jurisdictions where appropriate. The Company has two primary products. DPNCheck® is a point-of-care test for diabetic peripheral neuropathy, which is the most common long-term complication of Type 2 diabetes. Quell is an app-enabled, wearable device for lower extremity chronic pain and for the symptoms of fibromyalgia.

The Company held cash, cash equivalents and investment grade securities totaling $16.4 million as of June 30, 2024. The Company believes that its present balance of cash resources and securities coupled with cash inflows from product sales will enable the Company to fund its operations for at least the next twelve months from the date of issuance of the financial statements. Actual cash requirements could differ from management's projections for many reasons, including changes the Company may make to its business strategy, commercial challenges, regulatory developments, changes to research and development programs, supply chain issues, staffing challenges and other items affecting the Company's projected uses of cash.

During February 2024, the Company announced that it would undertake a review of its strategic options to maximize shareholder value. These options include changes in marketing strategies, the acquisition of new assets, potential sale of Company assets, and a merger or other strategic transaction. This review process remains ongoing. A timetable for completion of this process has not been established, and even if certain strategic alternatives may be available, the Company cannot provide any assurance that the strategic alternatives review process will result in the successful realization of any particular alternative, transaction or value. Accordingly, the unaudited financial statements have been prepared on a basis that assumes the Company will continue as a going concern and which contemplates the realization of assets and satisfaction of liabilities and commitments in the ordinary course of business.

Unaudited Interim Financial Statements

The accompanying unaudited balance sheet as of June 30, 2024, unaudited statements of operations, statements of comprehensive loss, changes in stockholders' equity and cash flows for the quarters ended June 30, 2024 and 2023 have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Article 8 of Regulation S-X. The accompanying balance sheet as of December 31, 2023 has been derived from the audited balance sheet as of December 31, 2023 included in the Company's Form 10-K referenced below and does not include all disclosures required by U.S. GAAP. In the opinion of management, the financial statements include all normal and recurring adjustments considered necessary for a fair presentation of the Company’s financial position and operating results. Operating results for the six months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any other period. These financial statements and notes should be read in conjunction with the financial statements for the year ended December 31, 2023 included in the Company’s Annual Report on Form 10-K, as filed with the Securities and Exchange Commission (the "SEC"), on March 1, 2024 (File No. 001-33351).

Prior period reclassification

Certain items in the Statements of Cash Flows from prior year were reclassified to conform with the current presentation.

Revenues

Revenues include product sales, net of estimated returns. Revenue is measured as the amount of consideration the Company expects to receive in exchange for product transferred. Revenue is recognized at the point in time when contractual performance obligations have been satisfied and control of the product has been transferred to the customer. The Company has a single product delivery performance obligation. Accrued product returns using the most likely amount method are estimated based on historical data and evaluation of current information and variable consideration is not constrained. Revenue from product sales that occur via an online pharmacy agent are recognized on a gross basis and the related fulfillment fees are expensed within cost of revenues.

Accounts receivable are recorded in the amount the Company expects to collect, net of the allowance for credit losses. The allowance for credit losses is the Company’s best estimate of the amount of probable credit losses based on customer past payment history, product usage activity, and recent communications with the customer. Individual customer balances which are over 90 days past due are reviewed individually for collectability and written-off when recovery is not probable. The Company does not have any off-balance sheet credit exposure related to its customers. Allowance for credit losses was $25,000 as of June 30, 2024 and December 31, 2023.

Two customers accounted for 25% of total revenues in the quarter ended June 30, 2024 and two different customers accounted for 34% of total revenues in the quarter ended June 30, 2023. No customer accounted for more than 10% of revenue for the six months ended June 30, 2024 and one customer accounted for 26% of total revenues in the six months ended June 30, 2023. Four customers accounted for 79% and three customers accounted for 74% of accounts receivable as of June 30, 2024 and December 31, 2023, respectively.

Cash and Cash Equivalents

Cash and cash equivalents include bank demand deposits and money market funds that invest primarily in U.S. government securities.

Securities

The Company invests in highly liquid, marketable debt securities with high credit ratings and typically with maturities of two years or less. Individual securities are designated by the Company as either "held-to-maturity" ("HTM") or “available-for-sale” ("AFS") at the point of investment. Securities classified as short-term have maturities of less than one year. As of June 30, 2024, all marketable securities held by the Company are classified as available for sale and had remaining contractual maturities of one year or less.

HTM securities are valued on an amortized cost basis and reviewed to determine if an allowance for credit losses should be recorded in the statements of operations. AFS securities are valued at fair value. Unrealized gains and losses on AFS securities are included as a component of accumulated other comprehensive income in the balance sheets and statements of stockholders’ equity and a component of total comprehensive loss in the statements of comprehensive loss. An AFS security is impaired if its fair value is less than amortized cost. Unrealized losses are evaluated to determine if the impairment is credit-related or non-credit-related. Credit-related impairment is recognized as an allowance on the balance sheet with a corresponding adjustment to earnings, and a non-credit-related impairment is recognized in other comprehensive loss. For certain types of securities, such as U.S. Treasuries, the Company generally expects zero credit losses. No allowance for credit losses was recorded on its securities portfolio as of June 30, 2024 or December 31, 2023.

Fair Value

The Company follows the provisions of Financial Accounting Standards Board (the "FASB") Accounting Standards Codification ("ASC") Topic 820-10, Fair Value Measurements and Disclosures ("ASC 820-10"), which defines fair value, establishes a framework for measuring fair value in GAAP and requires certain disclosures about fair value measurements. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability.

As a basis for considering such assumptions, ASC 820-10 established a three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value as follows: Level 1 observable inputs such as quoted prices in active markets; Level 2 inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3 unobservable inputs for which there are little or no market data, which require the Company to develop its own assumptions. The hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value (See Note 5).

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during reporting periods. Actual results could differ from those estimates.

Recent Accounting Pronouncements

Accounting Standards Updates ("ASUs") issued by the FASB are evaluated for their applicability. ASUs not included in the disclosures in this report were assessed and determined to be either not applicable or not expected to have a material impact on our financial statements.

In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to provide disclosures of specific categories in the rate reconciliation, additional information for reconciling items that meet a quantitative threshold and income taxes paid disaggregated by jurisdiction. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of this standard on the Company’s Financial Statements and disclosures.

2. Comprehensive Loss

For the quarter and six months ended June 30, 2024, the Company had comprehensive loss of $135,006 and $128,000, respectively, for net unrealized gains on AFS, in addition to net loss of $1,487,932 and $4,517,506, respectively, in the statement of operations. For the quarter and six months ended June 30, 2023, the Company had comprehensive income of $102,847 and $168,721 for net unrealized gains on AFS, in addition to net loss of $1,537,029 and $3,111,203, respectively, for the quarter and six months ended June 30, 2023.

3. Net Loss Per Common Share

Basic and diluted net loss per common share were as follows:


	Quarters Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Net loss applicable to common stockholders	$	(1,487,932)	$	(1,537,029)	$	(4,517,506)	$	(3,111,203)



Weighted average number of common shares outstanding, basic and diluted	2,001,400		985,719		1,906,927		973,504

Net loss per common share applicable to common stockholders, basic and diluted	$	(0.74)	$	(1.56)	$	(2.37)	$	(3.20)

Shares underlying the following potentially dilutive weighted average number of common stock equivalents were excluded from the calculation of diluted net loss per common share because their effect was anti-dilutive for each of the periods presented:


	June 30,
		2024	2023
Options		62,898	65,683
Unvested restricted stock awards		2,438	9,459
Unvested restricted stock units		110,185	15,020
Convertible preferred stock		8	8
Total		175,529	90,170

4. Securities

The Company's marketable debt securities are classified as either HTM or AFS pursuant to ASC 320 - Investments - Debt Securities. HTM securities are valued at amortized cost. The following table summarizes the valuations and unrealized gains and losses of AFS securities which are recorded at estimated fair value as of June 30, 2024 and December 31, 2023. The Company held no HTM securities as of June 30, 2024 and December 31, 2023.


	June 30, 2024
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	7,866,852	$	29,883	$	—	$	—	$	7,896,735

Commercial paper	6,843,959		82,288		—		—		6,926,247
Total	$	14,710,811	$	112,171	$	—	$	—	$	14,822,982


	December 31, 2023
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	4,412,935	$	5,665	$	—	$	—	$	4,418,600

Commercial paper	11,612,099		234,506		—		—		$	11,846,605
Total	$	16,025,034	$	240,171	$	—	$	—	$	16,265,205

The Company evaluates all HTM and AFS securities for impairment at each reporting period. It determined that changes in the fair value of its securities at June 30, 2024 resulted primarily from interest rate fluctuations subsequent to the purchase date of the securities. There was no deterioration in the credit worthiness of the issuers and no credit losses were recorded as of June 30, 2024.

5. Fair Value Measurements

The following tables set forth the Company’s financial instruments that were measured at fair value:


	June 30, 2024
	Total		Level 1		Level 2		Level 3
Assets:
Money market funds	$	1,297,058	$	1,297,058	$	—	$	—
U.S. government bonds	7,896,735		7,896,735		—		—
Commercial paper	6,926,247		—		6,926,247		—
Total	$	16,120,040	$	9,193,793	$	6,926,247	$	—


	December 31, 2023
	Total		Level 1		Level 2		Level 3
Assets:
Money market funds	$	1,284,290	$	1,284,290	$	—	$	—
U.S. government bonds	4,418,600		4,418,600		—		—
Commercial paper	11,846,605		—		11,846,605		—
Total	$	17,549,495	$	5,702,890	$	11,846,605	$	—

The Company's accounts receivable, accounts payable, and accrued expenses are valued at cost which approximates fair value.

6. Inventories

Inventories consist of the following:


	June 30, 2024		December 31, 2023
Purchased components	$	1,129,688	$	1,151,381

Finished goods	320,717		408,047
	$	1,450,405	$	1,559,428

The Company recorded a charge of $74,209 in the six months ended June 30, 2024 to write down the value of its discontinued ADVANCE inventory within cost of revenues on the Company's statements of operations. The Company also recorded a charge of $63,420 in the six months ended June 30, 2023 to reduce the carrying value of inventory to net realizable value.

7. Accrued Expenses and Compensation

Accrued expenses and compensation consist of the following:


	June 30, 2024		December 31, 2023
Professional services	$	610,840	$	298,534
Compensation	107,410		346,245
Severance	221,000		—
Clinical	19,891		39,000
Warranty	8,000		9,400

Sales tax	132,708		141,672
Other	27,510		41,888

	$	1,127,359	$	876,739

In the six months ended June 30, 2024, the Company recorded a $15,000 liability included in "Other" in the table above, associated with additional costs incurred related to a discontinued product line within cost of revenues. In addition during the six months ended June 30, 2024, the Company recorded severance costs of approximately $580,000 of which approximately $221,000 remains unpaid as of June 30, 2024. See Note 10 - Employee Headcount Reduction.

8. Operating Leases

The Company's lease on its Woburn, Massachusetts corporate office and manufacturing facilities extends through mid-September 2025 at a monthly base rent of $13,846 and with a 5-year extension option.

Future minimum lease payments under this non-cancellable operating lease as of June 30, 2024 are as follows:







2024	$	82,892
2025	117,431
Total minimum lease payments	$	200,323

Interest, based on a 15% discount rate	$	23,722
Lease obligation, current portion	148,391
Lease obligation, net of current portion	28,210
	$	200,323

Total recorded rent expense was $50,377 and $49,232, for the quarters ended June 30, 2024 and 2023, respectively. Total recorded rent expense was $100,754 and $98,464 for the six-month periods ended June 30, 2024 and 2023, respectively. The Company records rent expense on its facility lease on a straight-line basis over the lease term. The remaining operating lease term was 1.2 years as of June 30, 2024.

9. Stockholders’ Equity

Preferred stock and convertible preferred stock consist of the following:


	June 30, 2024		December 31, 2023
Preferred stock, $0.001 par value; 5,000,000 shares authorized at June 30, 2024 and December 31, 2023; no shares issued and outstanding at June 30, 2024 and December 31, 2023	$	—	$	—
Series B convertible preferred stock, $0.001 par value; 147,000 shares designated at June 30, 2024 and December 31, 2023; 200 shares issued and outstanding at June 30, 2024 and December 31, 2023	$	1	$	1

2024 equity activity

In the first quarter of 2024, the Company issued 458,380 shares of its common stock, under its at-the-market ("ATM") program and realized net proceeds of $1,471,099. As of April 18, 2024, the Company terminated its ATM program.

In March 2024, 1,015 unvested restricted stock awards and 5,912 unvested restricted stock units were forfeited due to the employee reduction described in Note 10.

In June 2024, the Company issued 850 shares of fully vested common stock with a value of $2,601 pursuant to the Company's Employee Stock Purchase Plan.

In the quarter ended June 30, 2024, the Company issued 91,577 restricted stock units under its 2022 Equity Incentive Plan with a value of $376,027.

As of June 30, 2024, the Company had outstanding 2,438 unvested restricted stock awards and 110,185 unvested restricted stock units. At December 31, 2023 the Company had outstanding 6,222 unvested restricted stock awards and 60,492 unvested restricted stock units.

2023 equity activity

In May 2023, the Company issued 1,563 restricted stock units under its 2022 Equity Incentive Plan with a value of $12,625.

In June 2023, the Company issued 90,661 shares of its common stock, under its ATM program and realized net proceeds of $691,405. It also issued 1,316 shares of fully vested common stock with a value of $8,715 pursuant to the Company's Employee Stock Purchase Plan.

10. Employee Headcount Reduction

The Company's previously described review of its strategic options to maximize shareholder value is underway. Strategic options include changes in marketing strategies, the acquisition of new assets, potential sale of Company assets, and a merger or other strategic transaction.

The Company incurred severance charges related to a reduction of 10 full time employees in the first quarter of 2024. This reduction was implemented in order to better align staffing with work responsibilities and to reduce operating expenses. Total severance related charges of approximately $580,000 were recorded in the quarter ended March 31, 2024 and cash payments of approximately $25,000 were made at that time. During the quarter ended June 30, 2024 additional severance payments of approximately $334,000 were made and the remaining accrued severance obligation was approximately $221,000. This remaining severance balance will be paid during the second half of 2024 in accordance with employee contractual agreements.

The following table sets forth the activity during the quarter in accrued severance.


	Six months ended June 30, 2024
Severance
Beginning balance	$	—
Additions	580,427
Amounts paid out	(25,427)
Balance, March 31, 2024	555,000
Amounts paid out	(334,000)
Balance, June 30, 2024	$	221,000

Within the Company's Statements of Operations for the six months ended June 30, 2024, total severance charges of $580,427 were recorded in the first quarter as follows: $310,200 within research and development, $234,527 within sales and marketing, $4,200 within general and administrative and $31,500 within cost of revenues.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion of our financial condition and results of operations in conjunction with our financial statements and the accompanying notes to those financial statements included elsewhere in this Quarterly Report on Form 10-Q. This discussion contains forward-looking statements that involve risks and uncertainties. For a description of factors that may cause our actual results to differ materially from those anticipated in these forward-looking statements, please refer to the below section of this Quarterly Report on Form 10-Q titled “Cautionary Note Regarding Forward-Looking Statements.” Unless the context otherwise requires, all references to “we”, “us”, the “Company”, or “NeuroMetrix” in this Quarterly Report on Form 10-Q refer to NeuroMetrix, Inc.

Business Overview

NeuroMetrix is a commercial stage neurotechnology company based in Woburn, Massachusetts. The Company’s mission is to improve individual and population health through innovative medical devices and technology solutions for pain syndromes and neurological disorders. Our core expertise in biomedical engineering has been refined over two decades of designing, building and marketing medical devices that stimulate nerves and analyze nerve response for diagnostic and therapeutic purposes. We are fully integrated with in-house capabilities spanning research and development, manufacturing, regulatory affairs and compliance, sales and marketing, product fulfillment and customer support. We hold extensive, proprietary intellectual property.

NeuroMetrix created the market for point-of-care nerve testing and introduced sophisticated wearable technology for chronic pain syndromes. Nearly five million patients have been served with our products. Revenue is derived from the sale of medical devices, after-market consumable products and accessories in the United States and select overseas markets. Products are authorized by the U.S. Food and Drug Administration (FDA) and regulators in foreign jurisdictions where appropriate. We have two principal product categories:

•Therapeutic technology – wearable neuromodulation for chronic pain syndromes

•Diagnostic technology - point-of-care peripheral neuropathy assessment

Chronic pain is a significant public health problem. It is defined by the National Institutes of Health (the "NIH") as pain lasting more than 12 weeks. This contrasts with acute pain which is a normal bodily response to injury or trauma. Chronic pain conditions include low back pain, arthritis, fibromyalgia, neuropathic pain, and cancer pain, among many others. Chronic pain

may be triggered by an injury or there may be an ongoing cause such as disease or illness. There may also be no clear cause. Chronic pain can also lead to other health problems which can include fatigue, sleep disturbance and mood changes, which cause difficulty in carrying out important activities and contributing to disability and despair. In general, chronic pain cannot be cured. Treatment of chronic pain is focused on reducing pain and improving function. The goal is effective pain management.

Chronic pain affects nearly 100 million adults in the United States and more than 1.5 billion people worldwide. The estimated incremental impact of chronic pain on health care costs in the United States is over $250 billion per year, and lost productivity is estimated to exceed $300 billion per year. The most common approach to chronic pain management is pain medication. This includes over-the-counter internal and external analgesics as well as prescription pain medications, both non-opioid and opioids. The approach to treatment is individualized, drug combinations may be employed, and the results are often inadequate. Side effects, including the potential for addiction are substantial. Reflecting the complexity of chronic pain and the difficulty in treating it, we believe that inadequate relief leads 25% to 50% of pain sufferers to seek alternatives to prescription pain medications. These alternatives include nutraceuticals, acupuncture, chiropractic care, non-prescription analgesics, electrical stimulators, braces, sleeves, pads and other items. In total, these pain relief products and services account for approximately $20 billion in annual out-of-pocket spending in the United States.

Nerve stimulation is a long-established category of treatment for chronic pain. This treatment approach is available through implantable devices which have both surgical and ongoing risks, such as migration of the implanted nerve stimulation leads. Non-invasive approaches involving transcutaneous electrical nerve stimulation ("TENS") have achieved limited efficacy in practice due to power limitations, inadequate dosing and low patient adherence. We believe that our Quell wearable technology for chronic pain is designed to address many of the limitations of traditional TENS.

Peripheral neuropathies, or polyneuropathies, are diseases of the peripheral nerves. They affect about 10% of adults in the United States, with the prevalence rising to over 30% among individuals 65 years and older. Peripheral neuropathies are associated with loss of sensation, pain, increased risk of falling, weakness, and other complications. People with peripheral

neuropathies have a diminished quality of life, poor overall health and higher mortality. The most common specific cause of peripheral neuropathies, accounting for about one-third of cases, is diabetes. Diabetes is a worldwide epidemic with an estimated affected population of over 400 million people. Within the United States there are over 30 million people with diabetes and another 80 million with pre-diabetes. The annual direct cost of treating diabetes in the United States exceeds $100 billion. Although there are dangerous acute manifestations of diabetes, the primary burden of the disease is in its long-term complications, which include cardiovascular disease, nerve disease and resulting conditions such as foot ulcers which may require amputation, eye disease leading to blindness, and kidney failure. The most common long-term complication of diabetes, affecting over 50% of the diabetic population, is peripheral neuropathy. Diabetic peripheral neuropathy ("DPN") is the primary trigger for diabetic foot ulcers which may progress to the point of requiring amputation. People with diabetes have a 15 to 25% lifetime risk of foot ulcers and approximately 15% of foot ulcers lead to amputation. Foot ulcers are the most expensive complication of diabetes with a typical cost of $5,000 to $50,000 per episode. In addition, between 16% and 26% of people with diabetes suffer from chronic pain in their feet and lower legs.

Early detection of peripheral neuropathies, such as DPN, is important because there are no treatment options once the nerves have degenerated. Currently available diagnostic methods for peripheral neuropathies range from a simple monofilament test for lack of sensory perception in the feet to a nerve conduction study performed by a specialist. Our DPNCheck nerve conduction technology provides a rapid, low cost, quantitative test for peripheral neuropathies, including DPN. It addresses an important medical need and is particularly effective in screening large populations. DPNCheck has been validated in multiple clinical studies.

Business Strategy

Our leading commercial products, and the focus of our strategic attention, are Quell and DPNCheck.

Quell is our wearable neuromodulation technology for chronic pain. It has been refined over the past seven years with feedback from over 200,000 chronic pain patients and is protected by over 20 U.S. utility patents. Patients control and personalize the technology with a mobile phone app, and their utilization of the devices and certain clinical metrics may be tracked in the Quell Health Cloud. The degree of technological sophistication, combined with our extensive consumer experience and the compelling results of clinical studies, gives us the opportunity to leverage this technology base into a portfolio of Quell-based prescription ("Rx") wearable neurotherapeutics.

Quell received Breakthrough Device Designation from the FDA for a fibromyalgia indication in 2021 leading to the FDA granting a De Novo marketing authorization for the use of Quell as an aid for reducing the symptoms of fibromyalgia in adults with high pain sensitivity. This Rx product was introduced to the domestic market in late 2022 under a controlled, strategic commercial launch with the objectives to develop an effective Rx fulfillment process, identify the higher-potential market sectors and an efficient marketing approach, and implement a cost-effective sales model. This led to the engagement of Health Warehouse as our on-line pharmacy, the introduction of a telemedicine option to facilitate patient prescriptions, higher electrode refill pricing, a focus on Veterans Administration patients and a shift to variable cost contractor sales versus an employee sales force. Many of these commercial efforts are being implemented and we see encouraging results in Quell-fibromyalgia sales volumes and gross margins. The Company plans to reactive its promotion of Quell OTC for lower extremity chronic pain during the fourth quarter of 2024.

Quell also received FDA Breakthrough Device Designation in early 2022 for the treatment of chronic Chemotherapy Induced Peripheral Neuropathy ("CIPN"). A CIPN double-blind, randomized, sham-controlled clinical study employing Quell, funded by the National Cancer Institute and the NIH, was completed in 2023. A 510(k) marketing application was submitted to FDA in late 2023; however, after evaluating the unique characteristics of the oncology market, the Company decided to follow the De Novo model that we used for Quell-fibromyalgia. A De Novo application for marketing Quell-CIPN to patients with moderate to severe neuropathic pain and cramps is planned for filing during the second half of 2024. This would be the second product in our emerging portfolio of Quell-based Rx wearable therapeutics. We anticipate a similar approach to other disease indications involving chronic pain. These potentially include Fibromyalgia-like Long COVID, Chronic Low Back Pain, and Chronic Overlapping Pain Conditions.

DPNCheck is our well-established testing technology for peripheral neuropathies. This technology has been evaluated in multiple clinical studies and promoted both in the domestic Medicare Advantage ("MA") market and also in the Asian markets of Japan and China. MA has historically contributed the majority of DPNCheck revenue and been the driver of product-line growth.

During 2023, the Centers for Medicare and Medicaid ("CMS") implemented significant changes to its MA Hierarchical Condition Categories ("HCC") risk adjustment payments and to its MA Risk Adjustment Data Validation ("RADV") audit practices. The changes to HCC risk factor coding significantly reduced CMS payments for population screening for various conditions, including for neuropathy, and resulted in a significant reduction in our DPNCheck sales. As a result, we have reduced our commercial sales team while continuing to support our customer base and attract new accounts. It is unlikely that there will be a near-term recovery from the decline in revenue of the DPNCheck MA business. DPNCheck sales in Asian markets are not affected by the reimbursement changes in MA.

Production and marketing of ADVANCE, a legacy, point-of-care neurodiagnostic technology primarily used for the diagnosis and screening for carpal tunnel syndrome, was discontinued in 2012. We continued to support an eroding customer base; however, in the first quarter of 2024 we concluded that the remaining business was not viable. Sales of ADVANCE accessories ended as of June 30, 2024 and product support was terminated on July 31, 2024.

Strategy Review

The Company has initiated a review of its strategic options to promote growth of Quell and DPNCheck and to maximize shareholder value. The review covers a wide range of options including potential changes in marketing strategies, the acquisition of new assets, potential sale of Company assets, and a merger or other strategic transaction. A timetable for completion of this process has not been set and the Company will continue to promote its commercial operations while the review is being conducted. The Company has utilized outside professional services in conducting its review, expanded its Board of Directors, curtailed its equity offerings, and implemented a reduction-in-force to reduce its operating costs. As of the date of this Quarterly Report on Form 10-Q, there have been no other material strategic transactions or decisions that would warrant disclosure.

Results of Operations

Comparison of Quarters Ended June 30, 2024 and 2023


	Quarter ended June 30,						Increase (Decrease)
	2024			2023			Amount		Percent

Revenues	$	769,148		$	1,655,744		$	(886,596)	(53.5)	%
Gross profit	491,919			1,119,258			$	(627,339)	(56.0)	%
–% of revenues	64.0		%	67.6		%			(3.6)	%
Operating expenses	2,320,574			2,742,713			$	(422,139)	(15.4)	%
Other income, net	340,723			86,426			$	254,297	294.2	%
Net loss	$	(1,487,932)		$	(1,537,029)		$	(49,097)	(3.2)	%
Net loss per common share	$	(0.74)		$	(1.56)		$	(0.82)	(52.6)	%

Revenues

Revenues for the second quarter of 2024 decreased by $887 thousand or 53.5% from the second quarter of 2023. DPNCheck sales accounted for the majority of revenues in both quarters and were the primary contributor to the revenue decline in the second quarter of 2024. The DPNCheck sales decline was primarily attributable to adverse CMS reimbursement changes in the Medicare Advantage market initiated in 2023 and scheduled to be phased in over a three year period which have reduced patient screening by healthcare providers for various conditions, including neuropathy. International sales of DPNCheck also declined from the prior year quarter due to excess inventory at the Japan distributor. The Company believes this situation is transient, and these biosensor orders should resume later this year. Quell sales made a small contribution to offsetting the DPNCheck sales reduction in the second quarter of 2024.

Gross Profit

Gross profit for the second quarter of 2024 decreased by $627 thousand or 56.0% from the second quarter of 2023. Gross profit reflected a 64.0% gross margin rate in comparison with 67.6% in the prior year quarter. The decline in revenue, particularly DPNCheck revenue, was the largest contributor to the reduction in gross profit. The gross profit rate contraction

reflected reduced weighting by DPNCheck, the Company’s highest margin product line offset by a reduction of $35 thousand of a contingent liability related to the discontinued ADVANCE product line.

Operating Expenses

Operating expenses declined in the second quarter of 2024 by $422 thousand or 15.4% from the second quarter of 2023. The primary contributors were cost benefits from the employee headcount restructuring in the first quarter of 2024 partially offset by increased professional service fees related to the business strategy review. Research and development spending in the second quarter of 2024 of $267 thousand decreased by $487 thousand from 2023 due primarily to a reduction in personnel costs of $386 thousand. Sales and marketing spending of $435 thousand decreased by $310 thousand from 2023 due primarily to a reduction of personnel costs of $287 thousand from 2023. General and administrative costs of $1.6 million increased by $374 thousand from 2023 reflecting higher professional fees of $512 thousand largely attributable to the business strategy review (legal and banking fees) partially offset by a reduction in personnel costs of $227 thousand.

Net loss

The net loss in the second quarter of 2024 of $1.5 million decreased by $49 thousand from the second quarter of 2023. Net loss per common share was ($0.74) versus ($1.56) per common share in the second quarter of 2024. Per share amounts reflect 2.0 million shares outstanding in the second quarter of 2024 versus 1.0 million shares outstanding in the second quarter of 2023.

Comparison of Six Months Ended June 30, 2024 and 2023


	Six months ended June 30,						Increase (Decrease)
	2024			2023			Amount		Percent

Revenues	$	1,862,704		$	3,380,515		$	(1,517,811)	(44.9)	%
Gross profit	$	1,008,936		$	2,317,657		$	(1,308,721)	(56.5)	%
–% of revenues	54.2		%	68.6		%			(14.4)	%
Operating expenses	$	6,091,582		$	5,651,181		$	440,401	7.8	%
Other income, net	$	565,140		$	222,321		$	342,819	154.2	%
Net loss	$	(4,517,506)		$	(3,111,203)		$	1,406,303	45.2	%
Net loss per common share	$	(2.37)		$	(3.20)		$	(0.83)	(25.9)	%

Revenues

Revenues for the first half of 2024 decreased by $1.5 million or 44.9% compared to the first half of 2023. DPNCheck sales, primarily focused on MA, accounted for the majority of revenues in both quarters and the decline in DPNCheck sales was the primary contributor to the revenue decline in the first half of 2024.

Gross Profit

Gross profit for the first half of 2024 decreased by $1.3 million or 56.5% compared to the first half of 2023. The decline in revenue, particularly DPNCheck revenue, was the largest contributor to the reduction in gross profit. The Company recorded a $90 thousand charge within cost of revenues, that had a (4.8%) impact on the gross margin during the first half of 2024 related to the discontinued ADVANCE product line.

Operating Expenses

Operating expenses increased in the first half of 2024 by $440 thousand or 7.8% compared to the first half of 2023. Increased G&A spending of $747 thousand was offset by reduced R&D spending of $243 thousand and reduced S&M spending of $64 thousand. Higher G&A spending was largely attributable to costs associated with the strategic review process.

Net loss

The net loss for the first half of 2024 increased by $1.4 million compared to 2023. Net loss per common share was ($2.37) in the first half of 2024 versus ($3.20) per common share in the first half of 2023. The increase in the number of common shares outstanding in the first half of 2024 (2.0 million) versus common shares outstanding in in the first half of 2023 (1.0 million) offset the effect of a greater net loss in the current year period.

Liquidity and Capital Resources


	June 30,				December 31,
	2024		2023		2023

Cash, cash equivalents and marketable securities	$	16,429,956	$	19,627,209	$	17,997,151

Working capital	$	16,886,839	$	21,079,477	$	19,613,803
Current ratio	11.6		18.4		16.8
Net debt position	$	(14,811,996)	$	(18,265,137)	$	(16,664,027)
Days sales outstanding	43.9		36.0		35.6
Inventory turnover	0.8		1.3		1.2

Our primary sources of liquidity are cash and cash equivalents, securities, revenues from the sales of our products, and net proceeds from equity sales. Our expected cash outlays relate to funding operations. We believe that our resources are sufficient to fund our cash requirements over at least the next twelve months from the date of issuance of the financial statements. As indicated above, we have initiated a review of our strategic options to maximize shareholder value. These options include changes in marketing strategies, the acquisition of new assets, potential sale of Company assets, and a merger or other strategic transaction, which could affect our future liquidity.

As of June 30, 2024, we had working capital of $16.9 million, including $16.4 million in cash, cash equivalents and marketable securities, and a current ratio of 11.6. We had no term debt or borrowings. Net debt, defined as short and long-term debts, less cash, cash equivalents and securities, continues to be negative.

Days sales outstanding ("DSO") reflect our customer payment terms which vary from payment on order to 60 days from shipment date. The increase in DSO in 2024 in comparison with the prior year reflects a greater weighting during 2024 of sales with terms of 30 to 60 days plus extended payment terms provided to DPNCheck customers related to a volume-based contracts. Inventory turnover rate declined during the quarter ended June 30, 2024 due to the lower DPNCheck sales.

Cash Flows


	Six months ended June 30,
	2024		2023		Change

Net cash provided by (used in):
Operating activities	$	(3,445,868)	$	(2,572,486)	$	(873,382)
Investing activities	1,847,196		(599,705)		2,446,901
Financing activities	1,473,700		700,120		773,580
Net change in cash and cash equivalents	$	(124,972)	$	(2,472,071)

Operating activities

Cash used in operating activities in the first half of 2024 increased by $873 thousand from the comparable period in 2023. This primarily reflects the increased net loss in the period.

Investing activities

Investing activities in the first half of 2024 reflect $18.7 million in purchases of AFS securities offset by proceeds from maturity of AFS securities of $20.5 million. Investing activities in the first half of 2023 reflect the deployment of cash to purchase investment grade securities in the amount of $16.6 million offset by the maturity of HTM securities of $16.0 million. The cash deployed is invested for the short term, and while it is not forecasted to be essential to the Company’s near-term operations requirements, provides a cushion if necessary.

Financing activities

Equity sales in the first half of 2024 and 2023 contributed $1.5 million and $700 thousand, respectively. Shares of our common stock were sold to investors pursuant to the Company's at-the-market ("ATM") facility.

We continue to maintain an effective shelf registration statement covering the sales of shares of our common stock and other securities, giving us the opportunity to raise funding when needed or otherwise considered appropriate at prices and on terms to be determined at the time of any such offerings. Pursuant to the instructions to Form S-3, we have the ability to sell shares under the shelf registration statement, during any 12-month period, in an amount less than or equal to one-third of the aggregate market value of our common stock held by non-affiliates. If we raise additional funds by issuing equity or debt securities, either through the sale of securities pursuant to a registration statement or by other means, our existing stockholders may experience dilution, and the new equity or debt securities may have rights, preferences and privileges senior to those of our existing stockholders.

Cautionary Note Regarding Forward-Looking Statements

The statements contained in this Quarterly Report on Form 10-Q, including under the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and other sections of this Quarterly Report, include forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), including, without limitation, statements regarding our or our management’s expectations, hopes, beliefs, intentions or strategies regarding the future, such as our estimates regarding anticipated operating losses, future revenues and projected expenses, our future liquidity and our expectations regarding our needs for and ability to raise additional capital; our plan to pursue strategic alternatives to maximize shareholder value and the outcome of such pursuant; our ability to maintain the listing of our common stock on the Nasdaq Capital Market; our ability to manage our expenses effectively and raise the funds needed to continue our business; our belief that there are unmet needs and our estimates regarding the addressable market for the management of chronic pain and in the diagnosis and treatment of diabetic neuropathy; our expectations surrounding our commercialized neurostimulation and neuropathy diagnostic products; our expected timing and our plans to develop and commercialize our products; our ability to meet our proposed timelines for the commercial availability of our products; our ability to obtain and maintain regulatory approval of our existing products and any future products we may develop; regulatory and legislative developments in the United States and foreign countries; the performance of our third-party manufacturers; our ability to obtain and maintain intellectual property protection for our products; the successful development of our sales and marketing capabilities; the size and growth of the potential markets for our products and our ability to serve those markets; our estimate of our customer returns of our products; the rate and degree of market acceptance of any future products; our reliance on key scientific management or personnel; the payment and reimbursement methods used by private or government third party payers; and other factors discussed elsewhere in this Quarterly Report on Form 10-Q. The words “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” “plan” and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. The forward-looking statements contained in this quarterly report are based on our current expectations and beliefs concerning future developments and their potential effects on us. There can be no assurance that future developments affecting us will be those that we have anticipated. These forward-looking statements involve a number of risks, uncertainties (some of which are beyond our control) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements. These risks and uncertainties include, but are not limited to, those factors described in the section titled “Risk Factors” in our Annual Report on Form 10-K. Should one or more of these risks or uncertainties materialize, or should any of our assumptions prove incorrect, actual results may vary from those projected in these forward-looking statements. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We do not use derivative financial instruments in our investment portfolio and have no foreign exchange contracts. Our financial instruments consist of cash and cash equivalents and available for sale debt securities. We consider investments that, when purchased, have a remaining maturity of 90 days or less to be cash equivalents. The primary objectives of our investment strategy are to preserve principal, maintain proper liquidity to meet operating needs, and maximize yields. To minimize our exposure to an adverse shift in interest rates, we invest mainly in cash equivalents and investments with a maturity of twelve months or less and we maintain an average maturity of twelve months or less. We do not believe that a notional or hypothetical 10% change in interest rate percentages would have a material impact on the fair value of our investment portfolio or our interest income.

Item 4. Controls and Procedures

(a) Evaluation of Disclosure Controls and Procedures. Our principal executive officer and principal financial officer, after evaluating the effectiveness of our disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) as of June 30, 2024, have concluded that, based on such evaluation, our disclosure controls and procedures were effective to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms, and is accumulated and communicated to our management, including our principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

(b) Changes in Internal Controls. There were no changes in our internal control over financial reporting identified in connection with the evaluation of such internal control that occurred during the quarter ended June 30, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1. Legal Proceedings

While we are not currently a party to any material legal proceedings, we could become subject to legal proceedings in the ordinary course of business. We are not aware of and do not expect any such potential issues. However, should they occur, we would not expect them to have a significant impact on our financial position.

Item 1A. Risk Factors

Please refer to the complete Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the Securities and Exchange Commission (the “SEC”) on March 1, 2024, and to Item 1A of the Company's Quarterly Report on Form 10-Q, for the quarter ended March 31, 2024, filed with the SEC on May 15, 2024, for risks and uncertainties facing the Company that may have a material adverse effect on the Company’s business prospects, financial condition and results of operations.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

During the second quarter of 2024, none of our directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c), and none of our directors or executive officers adopted or terminated a non-Rule 10b5-1 trading arrangement (as defined in Item 408(c) of Regulation S-K).

Item 6. Exhibits


Exhibit No.						Description

31.1						Certification of Principal Executive Officer Under Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended, and pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002. Filed herewith.

31.2						Certification of Principal Financial Officer Required Under Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended, and pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Filed herewith.

32						Certification of Principal Executive Officer and Principal Financial Officer Required Under Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934, as amended, and 18 U.S.C. Section 1350. Furnished herewith.

101.INS						Inline XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document). Filed herewith.

101.SCH						Inline XBRL Taxonomy Extension Schema Document. Filed herewith.

101.CAL						Inline XBRL Taxonomy Extension Calculation Linkbase Document. Filed herewith.

101.DEF						Inline XBRL Taxonomy Extension Definition Linkbase Document. Filed herewith.

101.LAB						Inline XBRL Taxonomy Extension Label Linkbase Document. Filed herewith.

101.PRE						Inline XBRL Taxonomy Extension Presentation Linkbase Document. Filed herewith.

104						Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101). Filed herewith.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


		NEUROMETRIX, INC.

August 6, 2024	/s/	SHAI N. GOZANI, M.D., PH. D.
		Shai N. Gozani, M.D., Ph. D.
		Chairman, President and Chief Executive Officer

August 6, 2024	/s/	THOMAS T. HIGGINS
		Thomas T. Higgins
		Senior Vice President, Chief Financial Officer and Treasurer

EXHIBIT 31.1

CERTIFICATION

I, Shai N. Gozani, M.D., Ph.D., certify that:


1.	I have reviewed this Quarterly Report on Form 10-Q of NeuroMetrix, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
	a)	designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)	designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)	evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d)	disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
5.	The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
	a)	all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
	b)	any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.


Date:	August 6, 2024	/s/ SHAI N. GOZANI, M.D., PH. D.
		Shai N. Gozani, M.D., Ph.D.
		Chairman, President and Chief Executive Officer

EXHIBIT 31.2

CERTIFICATION


I, Thomas T. Higgins, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of NeuroMetrix, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
	a)	designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)	designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)	evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d)	disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
5.	The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
	a)	all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
	b)	any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.


Date:	August 6, 2024	/s/ THOMAS T. HIGGINS
		Thomas T. Higgins
		Senior Vice President, Chief Financial Officer and Treasurer

EXHIBIT 32

CERTIFICATION

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of NeuroMetrix, Inc., a Delaware corporation (the "Company"), does hereby certify, to such officer's knowledge, that:

The Quarterly Report for the quarter ended June 30, 2024 (the "Form 10-Q") of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.


			/s/ SHAI N. GOZANI, M.D., PH. D.
			Shai N. Gozani, M.D., Ph.D.
			Chairman, President and Chief Executive Officer


			/s/ THOMAS T. HIGGINS
			Thomas T. Higgins
			Senior Vice President, Chief Financial Officer and Treasurer

August 6, 2024

This certification is being furnished and not filed, and shall not be incorporated into any document for any purpose, under the Securities Exchange Act of 1934 or the Securities Act of 1933.

Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Jun. 30, 2024	Aug. 05, 2024
Document Information [Line Items]
Entity Central Index Key	0001289850
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		2,025,874
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Type	10-Q
Entity Current Reporting Status	Yes
Entity Small Business	true
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-33351
Entity Registrant Name	NEUROMETRIX, INC.
Entity Incorporation, State or Country Code	DE
Entity Address, Postal Zip Code	01801
Local Phone Number	890-9989
Entity Filer Category	Non-accelerated Filer
Entity Tax Identification Number	04-3308180
Entity Address, Address Line One	4B Gill Street
Entity Address, City or Town	Woburn
Entity Address, State or Province	MA
City Area Code	781
Stockholders' Equity, Reverse Stock Split	All share amounts in the Quarterly Report on Form 10-Q have been adjusted to reflect a 1-for-8 reverse stock split that was effected on November 21, 2023.
Common Stock [Member]
Document Information [Line Items]
Security Exchange Name	NASDAQ
Trading Symbol	NURO
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Preferred Stock
Document Information [Line Items]
Title of 12(b) Security	Preferred Stock Purchase Rights

Balance Sheets - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 1,606,974	$ 1,731,946
Debt Securities, Available-for-Sale	14,822,982	16,265,205
Accounts receivable, net	280,566	518,824
Inventories	1,450,405	1,559,428
Prepaid expenses and other current assets	315,662	779,039
Total current assets	18,476,589	20,854,442
Fixed assets, net	243,634	293,449
Operating Lease, Right-of-Use Asset	183,160	250,150
Other Assets, Noncurrent	26,400	26,400
Total assets	18,929,783	21,424,441
Current liabilities:
Accounts payable	314,000	215,509
Accrued expenses and compensation	1,127,359	876,739
Operating Lease, Liability, Current	148,391	148,391
Total current liabilities	1,589,750	1,240,639
Operating Lease, Liability, Noncurrent	28,210	92,485
Total liabilities	1,617,960	1,333,124
Commitments and contingencies
Stockholders’ equity:
Common Stock, Value, Issued	202	152
Additional paid-in capital	231,826,308	229,960,346
Accumulated Other Comprehensive Income (Loss), Net of Tax	112,171	240,171
Accumulated deficit	(214,626,859)	(210,109,353)
Total stockholders’ equity	17,311,823	20,091,317
Total liabilities and stockholders’ equity	$ 18,929,783	$ 21,424,441
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	25,000,000	25,000,000
Common Stock, Shares, Issued	2,016,537	1,524,939
Common Stock, Shares, Outstanding	2,016,537	1,524,939
Convertible preferred stock
Stockholders’ equity:
Preferred stock	$ 1	$ 1
Preferred Non-Convertible Stock
Stockholders’ equity:
Preferred stock	$ 0	$ 0

Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
Statements of Operations (Unaudited) - USD ($)	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue from Contract with Customer, Including Assessed Tax	$ 769,148	$ 1,655,744	$ 1,862,704	$ 3,380,515
Cost of revenues	277,229	536,486	853,768	1,062,858
Gross profit	491,919	1,119,258	1,008,936	2,317,657
Loss from operations	(1,828,655)	(1,623,455)	(5,082,646)	(3,333,524)
Investment Income, Interest	13,005	86,426	32,167	222,321
Other Nonoperating Income	327,718		532,973
Nonoperating Income (Expense), Total	340,723	86,426	565,140	222,321
Net loss	$ (1,487,932)	$ (1,537,029)	$ (4,517,506)	$ (3,111,203)
Earnings Per Share, Basic	$ (0.74)	$ (1.56)	$ (2.37)	$ (3.20)
Earnings Per Share, Diluted	$ (0.74)	$ (1.56)	$ (2.37)	$ (3.20)
Operating expenses:
Research and development	$ 266,932	$ 753,509	$ 1,210,484	$ 1,452,934
Sales and marketing	435,014	744,963	1,496,743	1,560,835
General and administrative	1,618,628	1,244,241	3,384,355	2,637,412
Total operating expenses	$ 2,320,574	$ 2,742,713	$ 6,091,582	$ 5,651,181

Statement of Comprehensive Income (Statement) - USD ($)	3 Months Ended		6 Months Ended
Statement of Comprehensive Income (Statement) - USD ($)	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net Income (Loss) Attributable to Parent	$ (1,487,932)	$ (1,537,029)	$ (4,517,506)	$ (3,111,203)
Other Comprehensive Income Realized Gain Adjustment	(327,718)		(532,973)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(1,622,938)	(1,434,182)	(4,645,506)	(2,942,482)
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax	$ 192,712	$ 102,847	$ 404,973	$ 168,721

Equity Rollforward Statement - USD ($)	Total	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Preferred Stock Convertible Preferred Stock [Member]	Common Stock [Member]	AOCI Attributable to Parent
Stockholders' Equity Attributable to Parent	$ 23,355,687	$ 226,935,456	$ (203,579,866)	$ 1	$ 96
Shares, Outstanding				200.00	959,460
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	165,361	165,361
Stock Issued During Period, Shares, Restricted Stock Award, Gross					2,439
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax	65,874					$ 65,874
Net Income (Loss) Attributable to Parent	(1,574,174)		(1,574,174)
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax	168,721
Net Income (Loss) Attributable to Parent	(3,111,203)
Stockholders' Equity Attributable to Parent	22,012,748	227,100,817	(205,154,040)	$ 1	$ 96	65,874
Shares, Outstanding				200.00	961,899
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	132,745	132,745
Stock Issued During Period, Shares, New Issues					90,661
Stock Issued During Period, Value, New Issues	691,405	691,396			$ 9
Stock Issued During Period, Shares, Employee Stock Purchase Plans					1,316
Stock Issued During Period, Value, Employee Stock Purchase Plan	8,713	8,713
Stock Issued During Period, Value, Restricted Stock Award, Gross		(1)			$ 1
Stock Issued During Period, Shares, Restricted Stock Award, Gross					9,015
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax	102,847					102,847
Net Income (Loss) Attributable to Parent	(1,537,029)		(1,537,029)
Stockholders' Equity Attributable to Parent	21,411,429	227,933,670	(206,691,069)	$ 1	$ 106	168,721
Shares, Outstanding				200	1,062,891
Stockholders' Equity Attributable to Parent	20,091,317	229,960,346	(210,109,353)	$ 1	$ 152	240,171
Shares, Outstanding				200.00	1,518,717
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	216,164	216,164
Stock Issued During Period, Shares, New Issues					458,380
Stock Issued During Period, Value, New Issues	1,471,099	1,471,053			$ 46
Stock Issued During Period, Value, Restricted Stock Award, Gross		(1)			$ 1
Stock Issued During Period, Shares, Restricted Stock Award, Gross					6,699
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax	212,261					212,261
Other Comprehensive Income Realized Gain Adjustment	(205,255)					(205,255)
Net Income (Loss) Attributable to Parent	(3,029,574)		(3,029,574)
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax	404,973
Other Comprehensive Income Realized Gain Adjustment	(532,973)
Net Income (Loss) Attributable to Parent	(4,517,506)
Stockholders' Equity Attributable to Parent	18,756,012	231,647,562	(213,138,927)	$ 1	$ 199	247,177
Shares, Outstanding				200.00	1,983,796
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	176,148	176,148
Stock Issued During Period, Shares, Employee Stock Purchase Plans					850
Stock Issued During Period, Value, Employee Stock Purchase Plan	2,601	2,601
Stock Issued During Period, Value, Restricted Stock Award, Gross		(3)			$ 3
Stock Issued During Period, Shares, Restricted Stock Award, Gross					29,453
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax	192,712					192,712
Other Comprehensive Income Realized Gain Adjustment	(327,718)					(327,718)
Net Income (Loss) Attributable to Parent	(1,487,932)		(1,487,932)
Stockholders' Equity Attributable to Parent	$ 17,311,823	$ 231,826,308	$ (214,626,859)	$ 1	$ 202	$ 112,171
Shares, Outstanding				200	2,014,099

Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
Statements of Cash Flows (Unaudited) - USD ($)	Jun. 30, 2024	Jun. 30, 2023
Statement of Cash Flows [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (4,517,506)	$ (3,111,203)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	49,815	20,444
Operating Lease, Right-of-Use Asset, Periodic Reduction	66,990	58,087
Stock-based compensation	392,312	298,106
Inventory Charge Cost Of Revenues	74,209	63,420
Investment Income, Net, Amortization of Discount and Premium	0	131,127
Debt Securities, Available-for-Sale, Realized Gain	(532,973)	0
Changes in operating assets and liabilities:
Accounts receivable	238,258	(99,954)
Inventories	34,814	(32,418)
Prepaid expenses and other current and long-term assets	463,377	254,015
Accounts payable	98,491	(186,620)
Accrued expenses and compensation	250,620	350,137
Increase (Decrease) in Operating Lease Liability	(64,275)	(55,373)
Net Cash Provided by (Used in) Operating Activities	(3,445,868)	(2,572,486)
Cash flows from investing activities:
Net Cash Provided by (Used in) Investing Activities	1,847,196	(599,705)
Cash flows from financing activities:
Net proceeds from issuance of stock and warrants	1,473,700	700,120
Net Cash Provided by (Used in) Financing Activities	1,473,700	700,120
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(124,972)	(2,472,071)
Cash and cash equivalents, end of period	1,606,974
Supplemental disclosure of cash flow information:
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,606,974	1,862,949
Payments to Acquire Debt Securities, Available-for-Sale	(18,652,804)	(16,599,705)
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	20,500,000	0
Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities	$ 0	$ 16,000,000

Business and Basis of Presentation	6 Months Ended
Business and Basis of Presentation	Jun. 30, 2024
Accounting Policies [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Our Business-An Overview NeuroMetrix, Inc. (the "Company" or "NeuroMetrix") develops and commercializes health care products that utilize non-invasive neurostimulation. Revenues are derived from the sale of medical devices and after-market consumable products and accessories. The Company’s products are sold in the United States and select overseas markets. They are cleared by the U.S. Food and Drug Administration ("FDA") and regulators in foreign jurisdictions where appropriate. The Company has two primary products. DPNCheck® is a point-of-care test for diabetic peripheral neuropathy, which is the most common long-term complication of Type 2 diabetes. Quell is an app-enabled, wearable device for lower extremity chronic pain and for the symptoms of fibromyalgia. The Company held cash, cash equivalents and investment grade securities totaling $16.4 million as of June 30, 2024. The Company believes that its present balance of cash resources and securities coupled with cash inflows from product sales will enable the Company to fund its operations for at least the next twelve months from the date of issuance of the financial statements. Actual cash requirements could differ from management's projections for many reasons, including changes the Company may make to its business strategy, commercial challenges, regulatory developments, changes to research and development programs, supply chain issues, staffing challenges and other items affecting the Company's projected uses of cash. During February 2024, the Company announced that it would undertake a review of its strategic options to maximize shareholder value. These options include changes in marketing strategies, the acquisition of new assets, potential sale of Company assets, and a merger or other strategic transaction. This review process remains ongoing. A timetable for completion of this process has not been established, and even if certain strategic alternatives may be available, the Company cannot provide any assurance that the strategic alternatives review process will result in the successful realization of any particular alternative, transaction or value. Accordingly, the unaudited financial statements have been prepared on a basis that assumes the Company will continue as a going concern and which contemplates the realization of assets and satisfaction of liabilities and commitments in the ordinary course of business. Unaudited Interim Financial Statements The accompanying unaudited balance sheet as of June 30, 2024, unaudited statements of operations, statements of comprehensive loss, changes in stockholders' equity and cash flows for the quarters ended June 30, 2024 and 2023 have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Article 8 of Regulation S-X. The accompanying balance sheet as of December 31, 2023 has been derived from the audited balance sheet as of December 31, 2023 included in the Company's Form 10-K referenced below and does not include all disclosures required by U.S. GAAP. In the opinion of management, the financial statements include all normal and recurring adjustments considered necessary for a fair presentation of the Company’s financial position and operating results. Operating results for the six months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any other period. These financial statements and notes should be read in conjunction with the financial statements for the year ended December 31, 2023 included in the Company’s Annual Report on Form 10-K, as filed with the Securities and Exchange Commission (the "SEC"), on March 1, 2024 (File No. 001-33351). Prior period reclassification Certain items in the Statements of Cash Flows from prior year were reclassified to conform with the current presentation. Revenues Revenues include product sales, net of estimated returns. Revenue is measured as the amount of consideration the Company expects to receive in exchange for product transferred. Revenue is recognized at the point in time when contractual performance obligations have been satisfied and control of the product has been transferred to the customer. The Company has a single product delivery performance obligation. Accrued product returns using the most likely amount method are estimated based on historical data and evaluation of current information and variable consideration is not constrained. Revenue from product sales that occur via an online pharmacy agent are recognized on a gross basis and the related fulfillment fees are expensed within cost of revenues. Accounts receivable are recorded in the amount the Company expects to collect, net of the allowance for credit losses. The allowance for credit losses is the Company’s best estimate of the amount of probable credit losses based on customer past payment history, product usage activity, and recent communications with the customer. Individual customer balances which are over 90 days past due are reviewed individually for collectability and written-off when recovery is not probable. The Company does not have any off-balance sheet credit exposure related to its customers. Allowance for credit losses was $25,000 as of June 30, 2024 and December 31, 2023. Two customers accounted for 25% of total revenues in the quarter ended June 30, 2024 and two different customers accounted for 34% of total revenues in the quarter ended June 30, 2023. No customer accounted for more than 10% of revenue for the six months ended June 30, 2024 and one customer accounted for 26% of total revenues in the six months ended June 30, 2023. Four customers accounted for 79% and three customers accounted for 74% of accounts receivable as of June 30, 2024 and December 31, 2023, respectively. Cash and Cash Equivalents Cash and cash equivalents include bank demand deposits and money market funds that invest primarily in U.S. government securities. Securities The Company invests in highly liquid, marketable debt securities with high credit ratings and typically with maturities of two years or less. Individual securities are designated by the Company as either "held-to-maturity" ("HTM") or “available-for-sale” ("AFS") at the point of investment. Securities classified as short-term have maturities of less than one year. As of June 30, 2024, all marketable securities held by the Company are classified as available for sale and had remaining contractual maturities of one year or less. HTM securities are valued on an amortized cost basis and reviewed to determine if an allowance for credit losses should be recorded in the statements of operations. AFS securities are valued at fair value. Unrealized gains and losses on AFS securities are included as a component of accumulated other comprehensive income in the balance sheets and statements of stockholders’ equity and a component of total comprehensive loss in the statements of comprehensive loss. An AFS security is impaired if its fair value is less than amortized cost. Unrealized losses are evaluated to determine if the impairment is credit-related or non-credit-related. Credit-related impairment is recognized as an allowance on the balance sheet with a corresponding adjustment to earnings, and a non-credit-related impairment is recognized in other comprehensive loss. For certain types of securities, such as U.S. Treasuries, the Company generally expects zero credit losses. No allowance for credit losses was recorded on its securities portfolio as of June 30, 2024 or December 31, 2023. Fair Value The Company follows the provisions of Financial Accounting Standards Board (the "FASB") Accounting Standards Codification ("ASC") Topic 820-10, Fair Value Measurements and Disclosures ("ASC 820-10"), which defines fair value, establishes a framework for measuring fair value in GAAP and requires certain disclosures about fair value measurements. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820-10 established a three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value as follows: Level 1 observable inputs such as quoted prices in active markets; Level 2 inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3 unobservable inputs for which there are little or no market data, which require the Company to develop its own assumptions. The hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value (See Note 5). Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during reporting periods. Actual results could differ from those estimates. Recent Accounting Pronouncements Accounting Standards Updates ("ASUs") issued by the FASB are evaluated for their applicability. ASUs not included in the disclosures in this report were assessed and determined to be either not applicable or not expected to have a material impact on our financial statements. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to provide disclosures of specific categories in the rate reconciliation, additional information for reconciling items that meet a quantitative threshold and income taxes paid disaggregated by jurisdiction. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of this standard on the Company’s Financial Statements and disclosures.

Comprehensive Loss	6 Months Ended
Comprehensive Loss	Jun. 30, 2024
Equity [Abstract]
Comprehensive Loss	Comprehensive Loss For the quarter and six months ended June 30, 2024, the Company had comprehensive loss of $135,006 and $128,000, respectively, for net unrealized gains on AFS, in addition to net loss of $1,487,932 and $4,517,506, respectively, in the statement of operations. For the quarter and six months ended June 30, 2023, the Company had comprehensive income of $102,847 and $168,721 for net unrealized gains on AFS, in addition to net loss of $1,537,029 and $3,111,203, respectively, for the quarter and six months ended June 30, 2023.

Net Loss Per Common Share

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Net Loss Per Common Share

Basic and diluted net loss per common share were as follows:


	Quarters Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Net loss applicable to common stockholders	$	(1,487,932)	$	(1,537,029)	$	(4,517,506)	$	(3,111,203)



Weighted average number of common shares outstanding, basic and diluted	2,001,400		985,719		1,906,927		973,504

Net loss per common share applicable to common stockholders, basic and diluted	$	(0.74)	$	(1.56)	$	(2.37)	$	(3.20)


	June 30,
		2024	2023
Options		62,898	65,683
Unvested restricted stock awards		2,438	9,459
Unvested restricted stock units		110,185	15,020
Convertible preferred stock		8	8
Total		175,529	90,170

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]


	Quarters Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Net loss applicable to common stockholders	$	(1,487,932)	$	(1,537,029)	$	(4,517,506)	$	(3,111,203)



Weighted average number of common shares outstanding, basic and diluted	2,001,400		985,719		1,906,927		973,504

Net loss per common share applicable to common stockholders, basic and diluted	$	(0.74)	$	(1.56)	$	(2.37)	$	(3.20)

Investments, Debt and Equity Securities

6 Months Ended

Jun. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure

Securities


	June 30, 2024
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	7,866,852	$	29,883	$	—	$	—	$	7,896,735

Commercial paper	6,843,959		82,288		—		—		6,926,247
Total	$	14,710,811	$	112,171	$	—	$	—	$	14,822,982


	December 31, 2023
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	4,412,935	$	5,665	$	—	$	—	$	4,418,600

Commercial paper	11,612,099		234,506		—		—		$	11,846,605
Total	$	16,025,034	$	240,171	$	—	$	—	$	16,265,205

Fair Value Measurements

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

The following tables set forth the Company’s financial instruments that were measured at fair value:


	June 30, 2024
	Total		Level 1		Level 2		Level 3
Assets:
Money market funds	$	1,297,058	$	1,297,058	$	—	$	—
U.S. government bonds	7,896,735		7,896,735		—		—
Commercial paper	6,926,247		—		6,926,247		—
Total	$	16,120,040	$	9,193,793	$	6,926,247	$	—


	December 31, 2023
	Total		Level 1		Level 2		Level 3
Assets:
Money market funds	$	1,284,290	$	1,284,290	$	—	$	—
U.S. government bonds	4,418,600		4,418,600		—		—
Commercial paper	11,846,605		—		11,846,605		—
Total	$	17,549,495	$	5,702,890	$	11,846,605	$	—

The Company's accounts receivable, accounts payable, and accrued expenses are valued at cost which approximates fair value.

Inventories

6 Months Ended

Jun. 30, 2024

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following:


	June 30, 2024		December 31, 2023
Purchased components	$	1,129,688	$	1,151,381

Finished goods	320,717		408,047
	$	1,450,405	$	1,559,428

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure

Securities


	June 30, 2024
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	7,866,852	$	29,883	$	—	$	—	$	7,896,735

Commercial paper	6,843,959		82,288		—		—		6,926,247
Total	$	14,710,811	$	112,171	$	—	$	—	$	14,822,982


	December 31, 2023
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	4,412,935	$	5,665	$	—	$	—	$	4,418,600

Commercial paper	11,612,099		234,506		—		—		$	11,846,605
Total	$	16,025,034	$	240,171	$	—	$	—	$	16,265,205

Accrued Expenses

6 Months Ended

Jun. 30, 2024

Payables and Accruals [Abstract]

Accrued Expenses

Accrued Expenses and Compensation

Accrued expenses and compensation consist of the following:


	June 30, 2024		December 31, 2023
Professional services	$	610,840	$	298,534
Compensation	107,410		346,245
Severance	221,000		—
Clinical	19,891		39,000
Warranty	8,000		9,400

Sales tax	132,708		141,672
Other	27,510		41,888

	$	1,127,359	$	876,739

Leases Leases (Notes)

6 Months Ended

Jun. 30, 2024

Leases [Abstract]

Lessee, Operating Leases [Text Block]

Operating Leases

The Company's lease on its Woburn, Massachusetts corporate office and manufacturing facilities extends through mid-September 2025 at a monthly base rent of $13,846 and with a 5-year extension option.

Future minimum lease payments under this non-cancellable operating lease as of June 30, 2024 are as follows:







2024	$	82,892
2025	117,431
Total minimum lease payments	$	200,323

Interest, based on a 15% discount rate	$	23,722
Lease obligation, current portion	148,391
Lease obligation, net of current portion	28,210
	$	200,323

Stockholders' Equity

6 Months Ended

Jun. 30, 2024

Equity [Abstract]

Stockholders' Equity

Stockholders’ Equity

Preferred stock and convertible preferred stock consist of the following:


	June 30, 2024		December 31, 2023
Preferred stock, $0.001 par value; 5,000,000 shares authorized at June 30, 2024 and December 31, 2023; no shares issued and outstanding at June 30, 2024 and December 31, 2023	$	—	$	—
Series B convertible preferred stock, $0.001 par value; 147,000 shares designated at June 30, 2024 and December 31, 2023; 200 shares issued and outstanding at June 30, 2024 and December 31, 2023	$	1	$	1

2024 equity activity

In March 2024, 1,015 unvested restricted stock awards and 5,912 unvested restricted stock units were forfeited due to the employee reduction described in Note 10.

In June 2024, the Company issued 850 shares of fully vested common stock with a value of $2,601 pursuant to the Company's Employee Stock Purchase Plan.

In the quarter ended June 30, 2024, the Company issued 91,577 restricted stock units under its 2022 Equity Incentive Plan with a value of $376,027.

2023 equity activity

In May 2023, the Company issued 1,563 restricted stock units under its 2022 Equity Incentive Plan with a value of $12,625.

Restructuring and Related Activities

6 Months Ended

Jun. 30, 2024

Restructuring and Related Activities [Abstract]

Restructuring and Related Activities Disclosure [Text Block]

10. Employee Headcount Reduction

The following table sets forth the activity during the quarter in accrued severance.


	Six months ended June 30, 2024
Severance
Beginning balance	$	—
Additions	580,427
Amounts paid out	(25,427)
Balance, March 31, 2024	555,000
Amounts paid out	(334,000)
Balance, June 30, 2024	$	221,000

Pay vs Performance Disclosure - USD ($)	3 Months Ended				6 Months Ended
Pay vs Performance Disclosure - USD ($)	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss) Attributable to Parent	$ (1,487,932)	$ (3,029,574)	$ (1,537,029)	$ (1,574,174)	$ (4,517,506)	$ (3,111,203)

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 30, 2024
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	During the second quarter of 2024, none of our directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c), and none of our directors or executive officers adopted or terminated a non-Rule 10b5-1 trading arrangement (as defined in Item 408(c) of Regulation S-K).
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Business and Basis of Presentation (Policies)	6 Months Ended
Business and Basis of Presentation (Policies)	Jun. 30, 2024
Accounting Policies [Abstract]
Unaudited Interim Financial Statements	Unaudited Interim Financial Statements The accompanying unaudited balance sheet as of June 30, 2024, unaudited statements of operations, statements of comprehensive loss, changes in stockholders' equity and cash flows for the quarters ended June 30, 2024 and 2023 have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Article 8 of Regulation S-X. The accompanying balance sheet as of December 31, 2023 has been derived from the audited balance sheet as of December 31, 2023 included in the Company's Form 10-K referenced below and does not include all disclosures required by U.S. GAAP. In the opinion of management, the financial statements include all normal and recurring adjustments considered necessary for a fair presentation of the Company’s financial position and operating results. Operating results for the six months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any other period. These financial statements and notes should be read in conjunction with the financial statements for the year ended December 31, 2023 included in the Company’s Annual Report on Form 10-K, as filed with the Securities and Exchange Commission (the "SEC"), on March 1, 2024 (File No. 001-33351). Prior period reclassification Certain items in the Statements of Cash Flows from prior year were reclassified to conform with the current presentation.
Revenues	Revenues Revenues include product sales, net of estimated returns. Revenue is measured as the amount of consideration the Company expects to receive in exchange for product transferred. Revenue is recognized at the point in time when contractual performance obligations have been satisfied and control of the product has been transferred to the customer. The Company has a single product delivery performance obligation. Accrued product returns using the most likely amount method are estimated based on historical data and evaluation of current information and variable consideration is not constrained. Revenue from product sales that occur via an online pharmacy agent are recognized on a gross basis and the related fulfillment fees are expensed within cost of revenues. Accounts receivable are recorded in the amount the Company expects to collect, net of the allowance for credit losses. The allowance for credit losses is the Company’s best estimate of the amount of probable credit losses based on customer past payment history, product usage activity, and recent communications with the customer. Individual customer balances which are over 90 days past due are reviewed individually for collectability and written-off when recovery is not probable. The Company does not have any off-balance sheet credit exposure related to its customers. Allowance for credit losses was $25,000 as of June 30, 2024 and December 31, 2023. Two customers accounted for 25% of total revenues in the quarter ended June 30, 2024 and two different customers accounted for 34% of total revenues in the quarter ended June 30, 2023. No customer accounted for more than 10% of revenue for the six months ended June 30, 2024 and one customer accounted for 26% of total revenues in the six months ended June 30, 2023. Four customers accounted for 79% and three customers accounted for 74% of accounts receivable as of June 30, 2024 and December 31, 2023, respectively.
Cash and Cash Equivalents, Policy	Cash and Cash Equivalents Cash and cash equivalents include bank demand deposits and money market funds that invest primarily in U.S. government securities.
Marketable Securities, Policy	Securities The Company invests in highly liquid, marketable debt securities with high credit ratings and typically with maturities of two years or less. Individual securities are designated by the Company as either "held-to-maturity" ("HTM") or “available-for-sale” ("AFS") at the point of investment. Securities classified as short-term have maturities of less than one year. As of June 30, 2024, all marketable securities held by the Company are classified as available for sale and had remaining contractual maturities of one year or less. HTM securities are valued on an amortized cost basis and reviewed to determine if an allowance for credit losses should be recorded in the statements of operations. AFS securities are valued at fair value. Unrealized gains and losses on AFS securities are included as a component of accumulated other comprehensive income in the balance sheets and statements of stockholders’ equity and a component of total comprehensive loss in the statements of comprehensive loss. An AFS security is impaired if its fair value is less than amortized cost. Unrealized losses are evaluated to determine if the impairment is credit-related or non-credit-related. Credit-related impairment is recognized as an allowance on the balance sheet with a corresponding adjustment to earnings, and a non-credit-related impairment is recognized in other comprehensive loss. For certain types of securities, such as U.S. Treasuries, the Company generally expects zero credit losses. No allowance for credit losses was recorded on its securities portfolio as of June 30, 2024 or December 31, 2023.
Fair Value Measurement, Policy	Fair Value The Company follows the provisions of Financial Accounting Standards Board (the "FASB") Accounting Standards Codification ("ASC") Topic 820-10, Fair Value Measurements and Disclosures ("ASC 820-10"), which defines fair value, establishes a framework for measuring fair value in GAAP and requires certain disclosures about fair value measurements. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820-10 established a three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value as follows: Level 1 observable inputs such as quoted prices in active markets; Level 2 inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3 unobservable inputs for which there are little or no market data, which require the Company to develop its own assumptions. The hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value (See Note 5).
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during reporting periods. Actual results could differ from those estimates.
New Accounting Pronouncements, Policy	Recent Accounting Pronouncements Accounting Standards Updates ("ASUs") issued by the FASB are evaluated for their applicability. ASUs not included in the disclosures in this report were assessed and determined to be either not applicable or not expected to have a material impact on our financial statements. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to provide disclosures of specific categories in the rate reconciliation, additional information for reconciling items that meet a quantitative threshold and income taxes paid disaggregated by jurisdiction. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of this standard on the Company’s Financial Statements and disclosures.

Net Loss Per Common Share (Tables)

6 Months Ended

Jun. 30, 2024

Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]


	Quarters Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Net loss applicable to common stockholders	$	(1,487,932)	$	(1,537,029)	$	(4,517,506)	$	(3,111,203)



Weighted average number of common shares outstanding, basic and diluted	2,001,400		985,719		1,906,927		973,504

Net loss per common share applicable to common stockholders, basic and diluted	$	(0.74)	$	(1.56)	$	(2.37)	$	(3.20)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share


	June 30,
		2024	2023
Options		62,898	65,683
Unvested restricted stock awards		2,438	9,459
Unvested restricted stock units		110,185	15,020
Convertible preferred stock		8	8
Total		175,529	90,170

Investments, Debt and Equity Securities (Tables)

6 Months Ended

Jun. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-Sale Securities Reconciliation


	June 30, 2024
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	7,866,852	$	29,883	$	—	$	—	$	7,896,735

Commercial paper	6,843,959		82,288		—		—		6,926,247
Total	$	14,710,811	$	112,171	$	—	$	—	$	14,822,982


	December 31, 2023
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	4,412,935	$	5,665	$	—	$	—	$	4,418,600

Commercial paper	11,612,099		234,506		—		—		$	11,846,605
Total	$	16,025,034	$	240,171	$	—	$	—	$	16,265,205

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring and Nonrecurring Basis

The following tables set forth the Company’s financial instruments that were measured at fair value:


	June 30, 2024
	Total		Level 1		Level 2		Level 3
Assets:
Money market funds	$	1,297,058	$	1,297,058	$	—	$	—
U.S. government bonds	7,896,735		7,896,735		—		—
Commercial paper	6,926,247		—		6,926,247		—
Total	$	16,120,040	$	9,193,793	$	6,926,247	$	—


	December 31, 2023
	Total		Level 1		Level 2		Level 3
Assets:
Money market funds	$	1,284,290	$	1,284,290	$	—	$	—
U.S. government bonds	4,418,600		4,418,600		—		—
Commercial paper	11,846,605		—		11,846,605		—
Total	$	17,549,495	$	5,702,890	$	11,846,605	$	—

Inventories (Tables)

6 Months Ended

Jun. 30, 2024

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventories consist of the following:


	June 30, 2024		December 31, 2023
Purchased components	$	1,129,688	$	1,151,381

Finished goods	320,717		408,047
	$	1,450,405	$	1,559,428

Schedule of Available-for-Sale Securities Reconciliation


	June 30, 2024
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	7,866,852	$	29,883	$	—	$	—	$	7,896,735

Commercial paper	6,843,959		82,288		—		—		6,926,247
Total	$	14,710,811	$	112,171	$	—	$	—	$	14,822,982


	December 31, 2023
			Gross Unrealized
Available-for-sale securities	Cost		Gains		Losses		Credit Losses		Estimated Fair Value
U.S. government bonds	$	4,412,935	$	5,665	$	—	$	—	$	4,418,600

Commercial paper	11,612,099		234,506		—		—		$	11,846,605
Total	$	16,025,034	$	240,171	$	—	$	—	$	16,265,205

Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2024

Payables and Accruals [Abstract]

Schedule of Accrued Expenses

Accrued expenses and compensation consist of the following:


	June 30, 2024		December 31, 2023
Professional services	$	610,840	$	298,534
Compensation	107,410		346,245
Severance	221,000		—
Clinical	19,891		39,000
Warranty	8,000		9,400

Sales tax	132,708		141,672
Other	27,510		41,888

	$	1,127,359	$	876,739

Leases Leases (Tables)

6 Months Ended

Jun. 30, 2024

Leases [Abstract]

Lessee, Operating Lease, Liability, Maturity [Table Text Block]







2024	$	82,892
2025	117,431
Total minimum lease payments	$	200,323

Interest, based on a 15% discount rate	$	23,722
Lease obligation, current portion	148,391
Lease obligation, net of current portion	28,210
	$	200,323

Statement of Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2024

Equity [Abstract]

Schedule of Stock by Class [Table Text Block]

Preferred stock and convertible preferred stock consist of the following:


	June 30, 2024		December 31, 2023
Preferred stock, $0.001 par value; 5,000,000 shares authorized at June 30, 2024 and December 31, 2023; no shares issued and outstanding at June 30, 2024 and December 31, 2023	$	—	$	—
Series B convertible preferred stock, $0.001 par value; 147,000 shares designated at June 30, 2024 and December 31, 2023; 200 shares issued and outstanding at June 30, 2024 and December 31, 2023	$	1	$	1

Restructuring and Related Activities (Tables)

6 Months Ended

Jun. 30, 2024

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The following table sets forth the activity during the quarter in accrued severance.


	Six months ended June 30, 2024
Severance
Beginning balance	$	—
Additions	580,427
Amounts paid out	(25,427)
Balance, March 31, 2024	555,000
Amounts paid out	(334,000)
Balance, June 30, 2024	$	221,000

Business and Basis of Presentation (Detail) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
Business and Basis of Presentation (Detail) - USD ($)	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2022
Organization And Basis Of Presentation [Line Items]
Accounts receivable, net	$ 280,566		$ 280,566		$ 518,824
Net proceeds from issuance of stock and warrants			1,473,700	$ 700,120
Accumulated deficit	214,626,859		214,626,859		210,109,353
Cash and cash equivalents	1,606,974		1,606,974		1,731,946
Prepaid expenses and other current assets	(315,662)		(315,662)		(779,039)
Assets, Current	(18,476,589)		(18,476,589)		(20,854,442)
Liabilities, Current	(1,589,750)		(1,589,750)		(1,240,639)
Operating Lease, Liability, Noncurrent	(28,210)		(28,210)		(92,485)
Stockholders' Equity Attributable to Parent	17,311,823	$ 21,411,429	17,311,823	21,411,429	20,091,317	$ 18,756,012	$ 22,012,748	$ 23,355,687
Cost of revenues	277,229	536,486	853,768	1,062,858
Gross Profit	491,919	$ 1,119,258	1,008,936	$ 2,317,657
Operating Lease, Right-of-Use Asset	(183,160)		(183,160)		(250,150)
Assets	(18,929,783)		(18,929,783)		(21,424,441)
Accrued Liabilities, Current	(1,127,359)		(1,127,359)		(876,739)
Liabilities	(1,617,960)		(1,617,960)		(1,333,124)
Allowance for doubtful accounts	25,000		25,000		25,000
Cash, Cash Equivalents, and Short-term Investments	16,400,000		16,400,000
Debt Securities, Available-for-Sale, Allowance for Credit Loss	0		0		0
Debt Securities, Held-to-Maturity, Allowance for Credit Loss	$ 0		$ 0		$ 0
One Customer \| Revenue \| Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage				26.00%
Three Customers [Member] \| Accounts Receivable \| Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage					74.00%
Two Customers \| Revenue \| Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage	25.00%	34.00%
Four Customers \| Accounts Receivable \| Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage			79.00%
Zero Customers \| Revenue \| Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage			10.00%

Comprehensive Loss (Detail) - USD ($)	3 Months Ended				6 Months Ended
Comprehensive Loss (Detail) - USD ($)	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Equity [Abstract]
Other Comprehensive Income (Loss), Net of Tax	$ (135,006)		$ (102,847)		$ (128,000)	$ (168,721)
Net Income (Loss) Attributable to Parent	$ 1,487,932	$ 3,029,574	$ 1,537,029	$ 1,574,174	$ 4,517,506	$ 3,111,203

Net Loss Per Common Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total antidilutive securities excluded from the computation of earnings per share (in shares)	175,529	90,170
Convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total antidilutive securities excluded from the computation of earnings per share (in shares)	8	8
Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total antidilutive securities excluded from the computation of earnings per share (in shares)	62,898	65,683
Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total antidilutive securities excluded from the computation of earnings per share (in shares)	2,438	9,459
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total antidilutive securities excluded from the computation of earnings per share (in shares)	110,185	15,020

Net Loss Per Common Share Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net Income (Loss) Attributable to Parent	$ (1,487,932)	$ (3,029,574)	$ (1,537,029)	$ (1,574,174)	$ (4,517,506)	$ (3,111,203)
Weighted Average Number of Shares Outstanding, Basic	2,001,400		985,719		1,906,927	973,504
Weighted Average Number of Shares Outstanding, Diluted	2,001,400		985,719		1,906,927	973,504
Earnings Per Share, Diluted	$ (0.74)		$ (1.56)		$ (2.37)	$ (3.20)
Earnings Per Share, Basic	$ (0.74)		$ (1.56)		$ (2.37)	$ (3.20)

Investments, Debt and Equity Securities (Details) - AFS - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost	$ 14,710,811	$ 16,025,034
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	112,171	240,171
Debt Securities, Available-for-Sale	14,822,982	16,265,205
Debt Securities, Available-for-Sale, Allowance for Credit Loss	0	0
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Commercial Paper
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost	6,843,959	11,612,099
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	82,288	234,506
Debt Securities, Available-for-Sale	6,926,247	11,846,605
US Government Agencies Debt Securities
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost	7,866,852	4,412,935
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	29,883	5,665
Debt Securities, Available-for-Sale	$ 7,896,735	$ 4,418,600

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Assets
Debt Securities, Available-for-Sale	$ 14,822,982	$ 16,265,205
Assets, Fair Value Disclosure	16,120,040	17,549,495
Money Market Funds [Member]
Assets
Cash and Cash Equivalents, Fair Value Disclosure	1,297,058	1,284,290
US Government Agencies Debt Securities
Assets
Debt Securities, Available-for-Sale	7,896,735	4,418,600
Commercial Paper
Assets
Debt Securities, Available-for-Sale	6,926,247	11,846,605
Level 1
Assets
Assets, Fair Value Disclosure	9,193,793	5,702,890
Level 1 \| Money Market Funds [Member]
Assets
Cash and Cash Equivalents, Fair Value Disclosure	1,297,058	1,284,290
Level 1 \| US Government Agencies Debt Securities
Assets
Debt Securities, Available-for-Sale	7,896,735	4,418,600
Level 2
Assets
Assets, Fair Value Disclosure	6,926,247	11,846,605
Level 2 \| Commercial Paper
Assets
Debt Securities, Available-for-Sale	$ 6,926,247	$ 11,846,605

Inventories (Detail) - USD ($)	6 Months Ended
Inventories (Detail) - USD ($)	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Inventory [Line Items]
Purchased components	$ 1,129,688		$ 1,151,381
Finished goods	320,717		408,047
Inventories	1,450,405		$ 1,559,428
Inventory Charge Cost Of Revenues	$ 74,209	$ 63,420

Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Professional services		$ 610,840	$ 298,534
Accrued Salaries, Current		107,410	346,245
Restructuring Reserve		221,000	0
Accrued Clinical Current		19,891	39,000
Warranty reserve		8,000	9,400
Other		27,510	41,888
Sales and Excise Tax Payable, Current		132,708	141,672
Accrued expenses		1,127,359	876,739
Product Liability Contingency [Line Items]
Other		27,510	41,888
Employee Severance [Member]
Payables and Accruals [Abstract]
Restructuring Reserve	$ 555,000	221,000	$ 0
Product Liability Contingency [Line Items]
Restructuring Charges	$ 580,427	580,427
Discontinued Product Line
Payables and Accruals [Abstract]
Other		15,000
Product Liability Contingency [Line Items]
Other		$ 15,000

Leases Leases (Details) - USD ($)		3 Months Ended		6 Months Ended
Leases Leases (Details) - USD ($)	Jun. 01, 2018	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Operating Leased Assets [Line Items]
Operating Lease, Weighted Average Discount Rate, Percent		15.00%		15.00%
Operating Lease, Weighted Average Remaining Lease Term		1 year 2 months 12 days		1 year 2 months 12 days
Operating Lease, Expense		$ 50,377	$ 49,232	$ 100,754	$ 98,464
Operating Lease, Right-of-Use Asset		183,160		183,160		$ 250,150
Lessee, Operating Lease, Liability, to be Paid, Year One		82,892		82,892
Lessee, Operating Lease, Liability, to be Paid, Year Two		117,431		117,431
Lessee, Operating Lease, Liability, to be Paid		200,323		200,323
Operating Lease Discount		23,722		23,722
Operating Lease, Liability, Current		148,391		148,391		148,391
Operating Lease, Liability, Noncurrent		$ 28,210		$ 28,210		$ 92,485
Woburn Lease [Member]
Operating Leased Assets [Line Items]
Lessee, Operating Lease, Renewal Term	5 years
Woburn Lease [Member] \| MonthlyRent [Member]
Operating Leased Assets [Line Items]
Operating Lease, Payments	$ 13,846

Stockholders' Equity - Additional Information (Detail) - USD ($)	1 Months Ended				3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	May 31, 2023	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Class of Stock [Line Items]
Stock Issued During Period, Value, Employee Stock Purchase Plan					$ 2,601		$ 8,713
Net proceeds from issuance of stock and warrants									$ 1,473,700	$ 700,120
Common stock, par value (in dollars per share)	$ 0.0001				$ 0.0001				$ 0.0001		$ 0.0001
Stock Issued During Period, Value, New Issues						$ 1,471,099	$ 691,405
Common Stock [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Employee Stock Purchase Plans	850		1,316
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 2,601		$ 8,715
Common Stock [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Employee Stock Purchase Plans					850		1,316
Stock Issued During Period, Shares, New Issues						458,380	90,661
Stock Issued During Period, Shares, Restricted Stock Award, Gross					29,453	6,699	9,015	2,439
Stock Issued During Period, Value, Restricted Stock Award, Gross					$ 3	$ 1	$ 1
Stock Issued During Period, Value, New Issues						$ 46	$ 9
Restricted Stock
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	2,438				2,438				2,438		6,222
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period		1,015
Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	110,185				110,185				110,185		60,492
Stock Issued During Period, Shares, Restricted Stock Award, Gross				1,563	91,577
Stock Issued During Period, Value, Restricted Stock Award, Gross				$ 12,625	$ 376,027
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period		5,912
At The Market Offering Program [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues			90,661			458,380
Proceeds from Issuance of Common Stock			$ 691,405			$ 1,471,099

Preferred Stock and Convertible Preferred Stock (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Preferred Non-Convertible Stock
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Value of preferred stock issued	$ 0	$ 0
Preferred stock, shares outstanding (in shares)	0	0
Series B Preferred Stock \| Preferred Stock
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	147,000	147,000
Preferred stock, shares issued (in shares)	200	200
Value of preferred stock issued	$ 1	$ 1
Preferred stock, shares outstanding (in shares)	200	200

Restructuring and Related Activities (Details)	3 Months Ended		6 Months Ended
Restructuring and Related Activities (Details)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated		10
Restructuring Reserve	$ 221,000		$ 221,000	$ 0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	221,000	$ 555,000	221,000	$ 0
Restructuring Charges		580,427	580,427
Payments for Restructuring	$ 334,000	$ 25,427
Employee Severance [Member] \| Research and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			310,200
Employee Severance [Member] \| Selling and Marketing Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			234,527
Employee Severance [Member] \| General and Administrative Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			4,200
Employee Severance [Member] \| Cost of Sales
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			$ 31,500

Label	Element	Value
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 1,731,946
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 4,335,020

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