Amprius Technologies's three largest insider shareholders as of May 23, 2026 are Inc. Amprius, (TenPercentOwner, 2.50Mn shares), Justin E Mirro (Director, 2.39Mn shares), Kang Sun (Chief Executive Officer, 1.34Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Kang Sun | Chief Executive Officer | 1,342,400 | 0 | 02 Apr, 2026 |
| Livingston Satterthwaite | - | 336,083 | 0 | 17 Jun, 2025 |
| Justin E Mirro | - | 0 | 2,393,042 | 25 Jul, 2024 |
| Sandra Wallach | Chief Financial Officer | 1,005,275 | 0 | 25 Aug, 2025 |
| Wen Hsuan Hsieh | - | 44,444 | 0 | 13 Mar, 2026 |
| Ricardo C. Rodriguez | Chief Financial Officer | 350,000 | 0 | 13 Mar, 2026 |
| Constantin Ionel Stefan | Chief Technology Officer | 833,330 | 0 | 06 Mar, 2026 |
| Jonathan Bornstein | President Of Amprius Lab | 0 | 1,040,950 | 22 Nov, 2024 |
| Inc. Amprius, | - | 2,500,071 | 0 | 25 Oct, 2024 |
| Thomas M Stepien | Chief Executive Officer | 760,000 | 0 | 06 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Kang Sun | Common stock | A | 1,312,505 | $1.78 | 2,654,905 | D | M |
| 01 Apr, 2026 | Kang Sun | Common stock | A | 1,312,505 | $1.78 | 2,654,905 | D | M |
| 01 Apr, 2026 | Kang Sun | Common stock | A | 187,495 | $3.68 | 2,842,400 | D | M |
| 01 Apr, 2026 | Kang Sun | Common stock | A | 187,495 | $3.68 | 2,842,400 | D | M |
| 01 Apr, 2026 | Kang Sun | Common stock | D | 1,250,963 | $15.73 | 1,591,437 | D | S |
| 01 Apr, 2026 | Kang Sun | Common stock | D | 1,250,963 | $15.73 | 1,591,437 | D | S |
| 01 Apr, 2026 | Kang Sun | Common stock | D | 249,037 | $16.78 | 1,342,400 | D | S |
| 01 Apr, 2026 | Kang Sun | Common stock | D | 249,037 | $16.78 | 1,342,400 | D | S |
| 01 Apr, 2026 | Kang Sun | Stock Option (right to buy) | D | 1,312,505 | $1.78 | 0 | D | M |
| 01 Apr, 2026 | Kang Sun | Stock Option (right to buy) | D | 1,312,505 | $1.78 | 0 | D | M |
| 01 Apr, 2026 | Kang Sun | Stock Option (right to buy) | D | 187,495 | $3.68 | 1,787,007 | D | M |
| 01 Apr, 2026 | Kang Sun | Stock Option (right to buy) | D | 187,495 | $3.68 | 1,787,007 | D | M |
| 23 Mar, 2026 | Kang Sun | Common stock | D | 152,823 | $18.69 | 121,452 | I | S |
| 23 Mar, 2026 | Kang Sun | Common stock | D | 152,823 | $18.69 | 121,452 | I | S |
| 23 Mar, 2026 | Kang Sun | Common stock | D | 65,046 | $19.06 | 56,406 | I | S |
| 23 Mar, 2026 | Kang Sun | Common stock | D | 65,046 | $19.06 | 56,406 | I | S |
| 04 Mar, 2026 | Ricardo C. Rodriguez | Common stock | A | 150,000 | $0.00 | 350,000 | D | A |
| 12 Mar, 2026 | Wen Hsuan Hsieh | Common stock | A | 270,251 | $2.61 | 457,590 | D | M |
| 04 Mar, 2026 | Ricardo C. Rodriguez | Common stock | A | 150,000 | $0.00 | 350,000 | D | A |
| 12 Mar, 2026 | Wen Hsuan Hsieh | Common stock | D | 282,500 | $18.55 | 175,090 | D | S |