Ricardo C. Rodriguez - 04 Mar 2026 Form 4/A - Amendment Insider Report for Amprius Technologies, Inc. (AMPX)

Reporting relationship: Chief Financial Officer
Issuer ticker: AMPX
Reported as of: 04 Mar 2026
Net transaction value: $0
SEC form: 4/A - Amendment
Accepted by SEC: 13 Mar 2026, 18:09:30 UTC
Original report date: 06 Mar 2026
Prior SEC filing: 08 Oct 2025
Source filing: View source filing
Reporting owner signature: /s/ Ricardo C. Rodriguez

Key filing fact

Ricardo C. Rodriguez filed Form 4/A - Amendment for Amprius Technologies, Inc. (AMPX) on 13 Mar 2026.

Key facts

This page summarizes Ricardo C. Rodriguez's Form 4/A - Amendment filing for Amprius Technologies, Inc. (AMPX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 13 Mar 2026, 18:09.

Change

Previous filing in this sequence was filed on 08 Oct 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4/A - Amendment disclosures.

View source filing

Reporting Owners (1)

CIK 0001920996 Primary reporting owner

RODRIGUEZ RICARDO C.

Relationship: Chief Financial Officer
Address: 1180 PAGE AVE., FREMONT
Signature: /s/ Ricardo C. Rodriguez
Signature date: 13 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AMPX transaction

Common stock

Award

Transaction value
Shares: +150,000
Change %: +75%
Price: $0.000000^*
Shares after: 350,000
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

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.