SEC Form 4 · accession 0002067233-26-000019
Amprius Technologies, Inc. · AMPX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Thomas M Stepien
Officer — Chief Executive Officer · Director
Period of report
Aug 21, 2026
Accepted (ET)
Aug 25, 2026 · 5:21 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001899287
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common stockF2,F3 | Aug 21, 2026 | S | 23,529 | $10.341 | D | 602,096 | D | |
| Common stockF3 | Aug 24, 2026 | S | 8,000 | $10.03 | D | 594,096 | D | |
| Common stockF4,F3 | Aug 25, 2026 | G | 5,000 | $0.00 | D | 589,096 | D | |
| Common stockF4,F3 | Aug 25, 2026 | G | 5,000 | $0.00 | D | 584,096 | D | |
| Common stockF4,F3 | Aug 25, 2026 | G | 5,000 | $0.00 | D | 579,096 | D | |
| Common stockF5,F3 | Aug 25, 2026 | G | 346 | $0.00 | D | 578,750 | D | |
| Common stockF5,F6 | Aug 25, 2026 | A | 346 | $0.00 | A | 37,260 | I | See Footnote |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.
- F2The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.10 to $10.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
- F3Includes 568,750 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.
- F4These transfers were made on the same date as bona fide gifts.
- F5These securities were transferred by the reporting person to the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.
- F6These securities are held by the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.