X0609 4 2026-05-26 0 0001899287 Amprius Technologies, Inc. AMPX 0001045434 DIXON DONALD R false C/O AMPRIUS TECHNOLOGIES, INC., 1180 PAGE AVENUE FREMONT CA 94538 1 0 0 0 0 Common stock 2026-05-26 4 S 0 17895 17.8962 D 484380 I See Footnote Common stock 163142 I See Footnote Common stock 269656 D On July 22, 2025, the reporting person transferred 125,000 shares of the issuer's common stock, which were previously held directly by the reporting person, to the The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees. These securities are held directly by The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees. These securities are held by Donald & Elizabeth Dixon 2004 Family Partners, of which Mr. Dixon is a co-general partner. Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. /s/ Ricardo C. Rodriguez, attorney-in-fact on behalf of Donald R. Dixon 2026-05-28