UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Delaware 27-1488943 (State or other jurisdiction of incorporation or organization) Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 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 001-35996 VivoSim Labs, Inc. (Exact name of registrant as ...