Constantin Ionel Stefan - 14 Mar 2025 Form 4 Insider Report for Amprius Technologies, Inc. (AMPX)

Role: Chief Technology Officer
Signature: /s/ Sandra Wallach, attorney-in-fact on behalf of Constantin Ionel Stefan
Issuer symbol: AMPX
Transactions as of: 14 Mar 2025
Net transactions value: +$3,402
Form type: 4
Filing time: 18 Mar 2025, 17:07:40 UTC
Previous filing: 24 Feb 2025
Next filing: 21 Mar 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMPX	Common stock	Options Exercise	$3,402	+3,471	+0.82%	$0.9800	424,960	14 Mar 2025	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AMPX	Stock Option (right to buy)	Options Exercise	$0	-3,471	-100%	$0.000000	0	14 Mar 2025	Common stock	3,471	$0.9800	Direct

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

Explanation of Responses:

Id	Content
F1	Includes 280,927 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.