X0508 4 2025-10-27 0001770069 MapLight Therapeutics, Inc. MPLT 0002021198 Malenka Robert C. C/O MAPLIGHT THERAPEUTICS, INC. 800 CHESAPEAKE DRIVE REDWOOD CITY CA 94063 true false false false 0 Voting Common Stock 2025-10-27 4 A 0 34390 0 A 399671 D Voting Common Stock 2025-10-28 4 C 0 3895 A 31672 I See footnote Employee Stock Option (right to buy) 17 2025-10-27 4 A 0 139610 0 A 2035-10-26 Voting Common Stock 139610 139610 D Series C Preferred Stock 2025-10-28 4 C 0 65477 0 D Voting Common Stock 3895 0 I See footnote Represents a restricted stock unit ("RSU") award. 25% of the RSUs shall vest on October 1, 2026, and 1/16th of the RSUs shall vest on each subsequent January 1, April 1, July 1 and October 1 thereafter, subject to the Reporting Person's continued service through each vesting date. Each RSU represents a contingent right to receive one share of voting common stock of the Issuer. The Series C Preferred Stock automatically converted into voting common stock upon the closing of the Issuer's initial public offering for no additional consideration, on a 1-for-16.8 basis, and had no expiration date. The shares are held by the Robert C. Malenka Living Trust U/A DTD 08/21/2012, of which the Reporting Person is the sole trustee and has voting and dispositive power. 1/4th of the total shares underlying the option shall vest on October 1, 2026, and 1/48th of the total shares shall vest each month thereafter on the same day of the month, subject to the Reporting Person's continued service through each vesting date. /s/ Kristopher L. Hanson, Attorney-in-Fact 2025-10-28