X0306 4 2022-09-14 0 0001899287 Amprius Technologies, Inc. AMPX 0001476220 Sun Kang C/O AMPRIUS TECHNOLOGIES, INC., 1180 PAGE AVENUE FREMONT CA 94538 1 1 0 0 See Remarks Stock Option (right to buy) 0.05 2022-09-14 4 A 0 727950 A 2022-09-14 2024-03-15 Common Stock 727950 727950 D Stock Option (right to buy) 1.78 2022-09-14 4 A 0 1455901 A 2031-06-16 Common Stock 1455901 1455901 D Stock Option (right to buy) 2.61 2022-09-14 4 A 0 727950 A 2032-04-13 Common Stock 727950 727950 D Stock Option (right to buy) 2.61 2022-09-14 4 A 0 545962 A 2032-04-13 Common Stock 545962 545962 D On September 14, 2022, the Issuer completed a business combination (the "Business Combination") pursuant to the Business Combination Agreement, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Amprius Technologies Operating, Inc. ("Legacy Amprius"). At the effective time of the Business Combination (the "Effective Time"), each Legacy Amprius option was converted into an option to purchase a number of shares of Common Stock of the Issuer equal to the product (rounded down to the nearest whole number) of (i) the number of shares of Legacy Amprius common stock subject to the Legacy Amprius option immediately prior to the Effective Time multiplied by (ii) an exchange ratio of approximately 1.45590 (the "Exchange Ratio"), at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Legacy Amprius option immediately prior to the Effective Time divided by (B) the Exchange Ratio. 1/48 of the total number of shares issuable upon exercise of the option vested on July 17, 2021, and 1/48 of the total number of shares issuable upon exercise of the option vest monthly thereafter until fully vested on June 17, 2025. 1/48 of the total number of shares issuable upon exercise of the option vested on February 1, 2022, and 1/48 of the total number of shares issuable upon exercise of the option vest monthly thereafter until fully vested on January 1, 2026. 1/48 of the total number of shares issuable upon exercise of the option will vest on February 1, 2023, and 1/48 of the total number of shares issuable upon exercise of the option vest monthly thereafter until fully vested on January 1, 2027. President and Chief Executive Officer /s/ Sandra Wallach, attorney-in-fact on behalf of Kang Sun 2022-09-16