AMPRIUS TECHNOLOGIES INC (AMPX) Stock Ownership and Short Interest
USA - New York Stock Exchange - NYSE:AMPX - US03214Q1085 - Common Stock
8.1 USD
-0.17 (-2.06%)
| Shares Outstanding | 130.48M |
| Float | 118.55M |
| Float Short Interest Percentage | 11.4% |
| Owners (insider) | 6.29% |
| Owners (institutional) | 51.33% |
| Owners (insider) change | 0.17% |
| Owners (institutional) change | 68.73% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Dec 19, 2025 | Stepien Thomas M | Grant | 200000 | 0.00 | $ 0.00 |
| Dec 11, 2025 | Stefan Constantin Ionel | Option Excercise | 125000 | 0.05 | $ 6,250.00 |
| Dec 11, 2025 | Stefan Constantin Ionel | Open Market Sale | 198255 | 10.51 | $ 2,083,382.49 |
| Nov 21, 2025 | Sun Kang | Open Market Sale | 68655 | 10.08 | $ 692,131.65 |
| Nov 21, 2025 | Stefan Constantin Ionel | Open Market Sale | 25024 | 10.08 | $ 252,274.45 |
| Nov 17, 2025 | Sun Kang | Option Excercise | 1000000 | 0.28 | $ 278,124.74 |
| Nov 17, 2025 | Sun Kang | Open Market Sale | 1000000 | 10.60 | $ 10,595,300.00 |
| Oct 6, 2025 | RODRIGUEZ RICARDO C. | Grant | 200000 | 0.00 | $ 0.00 |
| Aug 21, 2025 | Stefan Constantin Ionel | Open Market Sale | 19159 | 6.82 | $ 130,591.58 |
| Aug 21, 2025 | Wallach Sandra | Open Market Sale | 28390 | 6.82 | $ 193,511.92 |
| Aug 21, 2025 | Sun Kang | Open Market Sale | 65654 | 6.82 | $ 447,510.79 |
| Jun 13, 2025 | SATTERTHWAITE LIVINGSTON | Grant | 44444 | 0.00 | $ 0.00 |
| Jun 13, 2025 | BAYLESS KATHLEEN A | Grant | 44444 | 0.00 | $ 0.00 |
| Jun 13, 2025 | Chu Steven | Grant | 44444 | 0.00 | $ 0.00 |
| Jun 13, 2025 | DIXON DONALD R | Grant | 44444 | 0.00 | $ 0.00 |
| Jun 13, 2025 | HSIEH Wen Hsuan | Grant | 44444 | 0.00 | $ 0.00 |
| May 21, 2025 | Stefan Constantin Ionel | Open Market Sale | 20366 | 2.43 | $ 49,530.11 |
| May 21, 2025 | Wallach Sandra | Open Market Sale | 27595 | 2.43 | $ 67,111.04 |
| May 21, 2025 | Sun Kang | Open Market Sale | 69786 | 2.43 | $ 169,719.55 |
| May 1, 2025 | Stepien Thomas M | Grant | 400000 | 0.00 | $ 0.00 |
| Mar 19, 2025 | Stefan Constantin Ionel | Grant | 461540 | 0.00 | $ 0.00 |
| Mar 19, 2025 | Sun Kang | Grant | 599400 | 0.00 | $ 0.00 |
| Mar 19, 2025 | Wallach Sandra | Grant | 383260 | 0.00 | $ 0.00 |
| Mar 14, 2025 | Stefan Constantin Ionel | Option Excercise | 3471 | 0.98 | $ 3,401.58 |
| Mar 10, 2025 | Bornstein Jonathan | Option Excercise | 3471 | 0.98 | $ 3,401.58 |
| Feb 21, 2025 | Sun Kang | Open Market Sale | 34353 | 3.13 | $ 107,634.82 |
| Feb 21, 2025 | Wallach Sandra | Open Market Sale | 18142 | 3.13 | $ 56,842.51 |
| Feb 21, 2025 | Stefan Constantin Ionel | Open Market Sale | 9066 | 3.13 | $ 28,405.59 |
| Feb 21, 2025 | Bornstein Jonathan | Open Market Sale | 13527 | 3.13 | $ 42,382.80 |