Thomas M. Stepien - 01 May 2025 Form 4 Insider Report for Amprius Technologies, Inc. (AMPX)

Role: President, Director
Signature: /s/ Sandra Wallach, attorney-in-fact on behalf of Thomas M Stepien
Issuer symbol: AMPX
Transactions as of: 01 May 2025
Net transactions value: $0
Form type: 4
Filing time: 06 May 2025, 20:12:44 UTC
Next filing: 22 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Stepien Thomas M	President, Director	1180 PAGE AVE., FREMONT	/s/ Sandra Wallach, attorney-in-fact on behalf of Thomas M Stepien	06 May 2025	0002067233

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMPX	Common stock	Award	$0	+400,000		$0.000000	400,000	01 May 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The securities are represented by restricted stock units granted on May 1, 2025. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/4th of the restricted stock units subject to the award will vest on May 20, 2026 and the remainder will vest quarterly over three years thereafter, on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on May 20, 2029.

Content

The securities are represented by restricted stock units granted on May 1, 2025. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/4th of the restricted stock units subject to the award will vest on May 20, 2026 and the remainder will vest quarterly over three years thereafter, on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on May 20, 2029.