Amprius Technologies (NYSE: AMPX) insider transactions
In the twelve months to 10 November 2026, executives and directors of Amprius Technologies reported 37 open-market sales of 6,372,615 shares ($85.7m) and 0 open-market purchases, by 6 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 25 August 2026 | Stepien Thomas M | Chief Executive Officer | Gift | −5,000 | — | 589,096 | Form 4 |
| 25 August 2026 | Stepien Thomas M | Chief Executive Officer | Gift | −5,000 | — | 584,096 | Form 4 |
| 25 August 2026 | Stepien Thomas M | Chief Executive Officer | Gift | −5,000 | — | 579,096 | Form 4 |
| 25 August 2026 | Stepien Thomas M | Chief Executive Officer | Gift | −346 | — | 578,750 | Form 4 |
| 25 August 2026 | Stepien Thomas M | Chief Executive Officer | Grant or award | +346 | — | 37,260 | Form 4 |
| 24 August 2026 | Stepien Thomas M | Chief Executive Officer | Open-market sale | −8,000 | $10.03 | 594,096 | Form 4 |
| 21 August 2026 | Sun Kang | Director | Open-market sale | −62,101 | $10.34 | 1,218,397 | Form 4 |
| 21 August 2026 | Stefan Constantin Ionel | Chief Technology Officer | Open-market sale | −29,681 | $10.34 | 771,629 | Form 4 |
| 21 August 2026 | Stepien Thomas M | Chief Executive Officer | Open-market sale | −23,529 | $10.34 | 602,096 | Form 4 |
| 15 June 2026 | Dixon Donald R | Director | Open-market sale | −85,000 | $17.17 | 359,380 | Form 4 |
| 12 June 2026 | Dixon Donald R | Director | Grant or award | +10,423 | — | 280,079 | Form 4 |
| 12 June 2026 | Bayless Kathleen A | Director | Grant or award | +10,423 | — | 216,120 | Form 4 |
| 12 June 2026 | Chu Steven | Director | Grant or award | +10,423 | — | 137,762 | Form 4 |
| 12 June 2026 | Satterthwaite Livingston | Director | Grant or award | +10,423 | — | 346,506 | Form 4 |
| 9 June 2026 | Dixon Donald R | Director | Open-market sale | −40,000 | $19.13 | 444,380 | Form 4 |
| 4 June 2026 | Stepien Thomas M | Chief Executive Officer | Gift | −30,384 | — | 664,539 | Form 4 |
| 4 June 2026 | Stepien Thomas M | Chief Executive Officer | Gift | −36,914 | — | 627,625 | Form 4 |
| 4 June 2026 | Stepien Thomas M | Chief Executive Officer | Gift | +36,914 | — | 36,914 | Form 4 |
| 4 June 2026 | Stepien Thomas M | Chief Executive Officer | Open-market sale | −2,000 | $20.97 | 625,625 | Form 4 |
| 27 May 2026 | Sun Kang | Director | Open-market sale | −356 | $17.19 | 1,280,498 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Amprius Technologies page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.