UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 2, 2025

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Amprius Technologies, Inc.

(Exact name of Registrant as Specified in Its Charter)

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Delaware	001-41314	98-1591811
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)


1180 Page Ave Fremont, California			94538
(Address of Principal Executive Offices)			(Zip Code)

Registrant’s Telephone Number, Including Area Code: (800) 425-8803

N/A

(Former Name or Former Address, if Changed Since Last Report)

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


			o			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

			o			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

			o			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

			o			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading
Symbol(s)

Name of each exchange
on which registered

Common stock, par value $0.0001 per share

AMPX

The New York Stock Exchange

Redeemable warrants, each exercisable for one share of common stock at an exercise price of $11.50

AMPX.W

The New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company x

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 5.02 Departure of Directors or Principal Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On September 2, 2025, Sandra Wallach, the Chief Financial Officer of Amprius Technologies, Inc. (the “Company”) informed the Company’s Board of Directors (the “Board”) of her intention to retire from her position, effective upon the appointment of her successor, which is expected to occur by or before the end of the fourth quarter of 2025. Ms. Wallach’s decision to retire is not the result of any disagreement regarding any matter relating to the Company’s operations, policies or practices. Ms. Wallach has informed the Board that, following her retirement as Chief Financial Officer, she intends to continue to be involved with the Company in a consulting or other capacity to support a smooth transition. The Board has commenced a process to identify and recruit a successor to serve as the Company’s Chief Financial Officer.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


		AMPRIUS TECHNOLOGIES, INC.

Date: September 2, 2025	By:	/s/ Sandra Wallach
		Name: Sandra Wallach
		Title: Chief Financial Officer

Amprius Technologies, Inc. 8-K