Amprius Technologies (AMPX) CFO granted 150,000-share award with vesting to 2030

Rhea-AI Filing Summary

RODRIGUEZ RICARDO C. reported acquisition or exercise transactions in this Form 4 filing.

Amprius Technologies, Inc. reported that its Chief Financial Officer, Ricardo C. Rodriguez, received a grant of 150,000 shares of common stock on March 4, 2026 at a price of $0.00 per share. Following this equity award, he directly owns 350,000 shares.

This amended filing corrects the vesting schedule for the previously reported restricted stock units. According to the updated terms, 3/16 of the shares will vest on November 20, 2026, with additional portions vesting quarterly on February 20, May 20, August 20 and November 20 until the award is fully vested on February 20, 2030, subject to his continued service.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

RODRIGUEZ RICARDO C.

(Last) (First) (Middle)

1180 PAGE AVE.

(Street)

FREMONT CA 94538

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Amprius Technologies, Inc. [ AMPX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)
03/06/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common stock	03/04/2026		A		150,000(1)	A	$0	350,000	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This Form 4/A is filed solely to correct the vesting schedule of the restricted stock units of the reporting person reported in the original filing. 3/16th of shares subject to award will vest on November 20, 2026 and quarterly thereafter on each February 20, May 20, August 20 and November 20, subject to the reporting person's continued service on each such date, until the award is fully vested on February 20, 2030.

Remarks:

	/s/ Ricardo C. Rodriguez	03/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Amprius Technologies (AMPX) report in this Form 4/A?

Amprius Technologies reported that CFO Ricardo C. Rodriguez received a grant of 150,000 shares of common stock on March 4, 2026. The award was granted at $0.00 per share as equity compensation rather than an open-market purchase.

How many Amprius (AMPX) shares does the CFO hold after this Form 4/A transaction?

After the March 4, 2026 grant, CFO Ricardo C. Rodriguez directly holds 350,000 shares of Amprius common stock. This total reflects the newly awarded 150,000-share equity grant added to his existing holdings as reported in the amended Form 4/A filing.

What vesting schedule applies to the 150,000-share award reported by Amprius (AMPX)?

The 150,000-share restricted stock unit award vests over time. 3/16 of the shares vest on November 20, 2026, with additional portions vesting quarterly on February 20, May 20, August 20 and November 20 until the award is fully vested on February 20, 2030.

Why did Amprius Technologies (AMPX) file this Form 4/A amendment?

The Form 4/A was filed solely to correct the vesting schedule for the restricted stock units previously reported for CFO Ricardo C. Rodriguez. It does not change the award size, only clarifies the timing of vesting through February 20, 2030.

Is the Amprius (AMPX) CFO’s 150,000-share grant an open-market stock purchase?

No, the 150,000 shares were granted as equity compensation at $0.00 per share, categorized as a grant or award acquisition. This differs from an open-market purchase, where shares are bought on an exchange at prevailing market prices.

Over what period will the Amprius (AMPX) CFO’s restricted stock units fully vest?

The restricted stock units will fully vest by February 20, 2030. Vesting begins with 3/16 of the award on November 20, 2026, followed by quarterly vesting on February 20, May 20, August 20 and November 20 each year, subject to continued service.