Amprius Technologies, Inc. (AMPX) ownership: Top institutional holder: BlackRock, Inc. ($155.54M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 9225611.00 | $155.54M | 2026-03-31 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 5160900.00 | $87.01M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4908875.00 | $82.76M | 2026-03-31 |
| JANE STREET GROUP, LLC | 4160656.00 | $70.15M | 2026-03-31 |
| Driehaus Capital Management LLC | 3794178.00 | $63.97M | 2026-03-31 |
| TWO SIGMA INVESTMENTS, LP | 3506075.00 | $59.11M | 2026-03-31 |
| VANGUARD GROUP INC | 7128657.00 | $56.25M | 2025-12-31 |
| MORGAN STANLEY | 3162167.00 | $53.31M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-05-27 | |
| Sell | null | 2026-05-27 | |
| Sell | null | 2026-05-27 | |
| Sell | null | 2026-05-27 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.