X0202 SCHEDULE 13G/A 0001104659-26-039856 0002033034 XXXXXXXX LIVE 1 Common Stock 06/30/2026 0001497253 VivoSim Labs, Inc. 68620A302 11555 Sorrento Valley Rd, Suite 100 San Diego CA 92121 Rule 13d-1(c) Esousa Group Holdings LLC NY 319429.00 0.00 319429.00 0.00 319429.00 Y 9.9 OO Michael Wachs X1 319429.00 0.00 319429.00 0.00 319429.00 Y 9.9 IN VivoSim Labs, Inc. 11555 Sorrento Valley Rd, Suite 100 San Diego, CA, 92121 Esousa Group Holdings LLC and Michael Wachs. 211 East 43rd Street, Suite 402 New York, NY 10017 Esousa Group Holdings LLC is a New York limited liability company and Mr. Wachs is a U.S. citizen. Y 319,429. This amount consists of 319,429 shares of common stock. Not included in the reported amount are 576,542 shares of common stock issuable upon the exercise of common warrants (the "Warrants"). Pursuant to the terms of the Warrants, the Issuer cannot issue common stock to the Reporting Person, and the Reporting Person cannot exercise its Warrants, to the extent that the Reporting Person would beneficially own, after any such issuance or exercise, more than 9.9% of the then issued and outstanding common stock of the Issuer (the "Beneficial Ownership Limitation"). 9.9%. This percentage is based on 3,194,295 shares of common stock of the Issuer outstanding as of June 30, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 12, 2026, and gives effect to the Beneficial Ownership Limitation. Due to the Beneficial Ownership Limitation, as of the date of the event which requires filing of this statement, the Reporting Person could not exercise its Warrants. 319,429 shares of common stock 0 319,429 shares of common stock 0 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G Esousa Group Holdings LLC /s/ Michael Wachs 08/17/2026 Michael Wachs /s/ Michael Wachs 08/17/2026