Indaptus Therapeutics, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

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

For the fiscal year ended December 31,2025

OR

☐ 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 001-40652

INDAPTUS THERAPEUTICS, INC.

(Exact name of Registrant as specified in its Charter)

Registrant’s telephone number, including area code: +(646) 427-2727

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

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

None

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YES ☐NO ☒

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. YES ☐NO ☒

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 ☒ 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 such files). YES ☒ NO ☐

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

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 has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to § 240.10D-1(b). ☐

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). YES ☐ NO☒

At June 30, 2025, the last business day of the Registrant’s most recently completed second fiscal quarter, the aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant was $5,781,886.

The number of shares of Registrant’s common stock outstanding as of March 16, 2026 was 2,242,324.

DOCUMENTS INCORPORATED BY REFERENCE

None.

ABOUT THIS ANNUAL REPORT

All references to “we,” “us,” “our,” “Indaptus Therapeutics”, “Indaptus”, “the Company” and “our company”, in this Annual Report on Form 10- K, or our Annual Report, are to Indaptus Therapeutics, Inc. (formerly Intec Parent, Inc.) and, where appropriate, its consolidated subsidiaries, Intec Pharma Ltd. and Decoy Biosystems, Inc. All references to “common stock” and “share capital” refer to common stock and share capital of Indaptus. Our historical results do not necessarily indicate our expected results for any future periods. Any discrepancies in any table between totals and sums of the amounts listed are due to rounding. Unless otherwise indicated, or the context otherwise requires, references in this Annual Report to financial and operational data for a particular year refer to the fiscal year of our Company ended December 31 of that year.

All information in this Annual Report relating to shares or price per share reflects the 1-for-28 reverse stock split effected by us on June 26, 2025 which began trading on a post-split basis on the Nasdaq Capital Market on June 27, 2025.

EXPLANATORY NOTE

On December 22, 2025, the Company entered into a Securities Purchase Agreement, or the Purchase Agreement, with David E. Lazar, pursuant to which he agreed to purchase from the Company 300,000 shares of Series AA Preferred Stock and 700,000 shares of Series AAA Preferred Stock (the “Series AAA Preferred Stock” and, together with the Series AA Preferred Stock, the “Preferred Stock”) at a purchase price of $6.00 per share of Preferred Stock for aggregate gross proceeds of $6.0 million, subject to the terms and conditions thereunder, or the Investment Transaction. The offering closed on December 23, 2025. As of the date of this Annual Report, Mr. Lazar is the beneficial owner of approximately 96.4% of common stock of the Company on an as-converted and fully-diluted basis. As part of the Investment Transaction, the Company plans to pursue a strategic transaction involving either an investment in or acquisition of an operating business, or the Target Company, referred to as the “Post-Investment Transaction.” Should such a transaction be approved and successfully finalized, the Company anticipates that combining with a Target Company will create future growth opportunities for both the Company and its stockholders. The Company is currently in the process of evaluating its strategic options for a Post-Investment Transaction. For further information, see*“Recent Developments – Lazar Investment Transaction”*.

Market data and certain industry data and forecasts used throughout this Annual Report were obtained from market research databases, consultant surveys commissioned by us, publicly available information, reports of governmental agencies and industry publications and surveys. Industry surveys, publications, consultant surveys commissioned by us and forecasts generally state that the information contained therein has been obtained from sources believed to be reliable. We have relied on certain data from third-party sources, including internal surveys, industry forecasts and market research, which we believe to be reliable based on our management’s knowledge of the industry. Statements as to our market position are based on the most currently available data. While we are not aware of any misstatements regarding the industry data presented in this Annual Report, our estimates involve risks and uncertainties and are subject to change based on various factors, including those discussed under Part I. Item 1A. “Risk Factors” in this Annual Report.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report contains, and management may make, certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts contained in this Annual Report on Form 10-K are forward-looking statements. In some cases, forward-looking statements can be identified by the use of terms such as “believe,” “expect,” “intend,” “plan,” “may,” “should,” “anticipate,” “could,” “might,” “seek,” “target,” “will,” “project,” “forecast,” “continue” or their negatives or variations of these words or other comparable words. These statements include, without limitation, our statements about: the Investment Transaction; our ability to successfully pursue our business strategy, including identifying and completing a Post-Investment Transaction; the Company’s financial condition and results of operations, including the financial impact of the Investment Transaction and related transactions and matters, our product candidates’ development; the anticipated effects of our product candidates; the market potential and treatment potential of our product candidates; our commercialization, marketing and manufacturing capabilities and strategy; our expectations about the willingness of healthcare professionals to use our product candidates; our general business strategy and the plans and objectives of management for future operations; our research and development activities and costs; our future results of operations and condition; the sufficiency of our cash and cash equivalents to fund our ongoing activities; the impact of current macroeconomic conditions, geopolitical events and ongoing military conflicts in the Middle East and the war between Russia and Ukraine on our operations, ability to access capital, and liquidity; and any impact of a pandemic, epidemic or other future health crisis on our business.

The forward-looking statements in this Annual Report are only predictions and are based largely on our current expectations and projections about future events and financial trends that we believe may affect our business, financial condition and results of operations. These forward-looking statements speak only as of the date of this Annual Report and are subject to a number of known and unknown risks, uncertainties and assumptions, including those described under the sections in this Annual Report entitled “Summary Risk Factors,” Part I. Item 1A. “Risk Factors” and Part II. Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in this Annual Report. You should also refer to our quarterly reports on Form 10-Q for future periods and current reports on Form 8-K as we file them with the U.S. Securities and Exchange Commission, or the SEC, and to other materials we may furnish to the public from time to time through SEC filings.

Because forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified and some of which are beyond our control, you should not rely on these forward-looking statements as predictions of future events. The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Moreover, we operate in an evolving environment. New risk factors and uncertainties may emerge from time to time, and it is not possible for management to predict all risk factors and uncertainties.

Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise. We intend the forward-looking statements contained in this Annual Report to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act.

Summary Risk Factors

The principal factors and uncertainties that make investing in our common stock risky, include, among others: