Form 4 Filing for Amprius Technologies, Inc.

This filing concerns a transaction by Thomas M. Stepien, President and a director of Amprius Technologies, Inc. On December 19, 2025, Mr. Stepien acquired 200,000 shares of common stock. These shares were granted as restricted stock units (RSUs) with a reported price of $0.00. The RSUs have a vesting commencement date of January 1, 2026, with 1/4 vesting on February 20, 2027, and the remainder vesting quarterly over three years thereafter. Following this transaction, Mr. Stepien holds 610,000 shares. The filing also includes a Power of Attorney document, authorizing Ricardo C. Rodriguez and Siyu Jiang to act on Mr. Stepien's behalf for SEC filings.