| $349M | ||
| $250M | ||
| $109M | ||
| $56M | ||
| $29M | ||
| $21M |
Buys | $0 | 0 | 0 |
Sells | $38,329,622 | 21 | 100 |
| Bornstein Jonathan | President of Amprius Lab | 0 | $0 | 1 | $42,383 | $-42,383 |
| Wallach Sandra | Chief Financial Officer | 0 | $0 | 3 | $317,465 | $-317,465 |
| Stefan Constantin Ionel | Chief Technology Officer | 0 | $0 | 9 | $9.85M | $-9.85M |
| Sun Kang | Chief Executive Officer | 0 | $0 | 8 | $28.12M | $-28.12M |
Amprius Technologies, Inc. manufactures and distributes lithium-ion batteries. Its products include silicon nanowire anode lithium-ion batteries. The company serves the aerospace, defense, and electric vehicle industries. Amprius Technologies, Inc. was incorporated in 2008 and is headquartered in Fremont, California.
Over the last 12 months, insiders at Amprius Technologies, Inc. have bought $0 and sold $38.33M worth of Amprius Technologies, Inc. stock.
On average, over the past 5 years, insiders at Amprius Technologies, Inc. have bought $0 and sold $16.61M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
| 2026-01-28 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 39,690 0.0315% | $12.00 | $476,351 | +1.90% | |
| 2026-01-23 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 1,600 0.0013% | $12.00 | $19,200 | +3.38% | |
| 2026-01-22 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 492,827 0.3806% | $12.04 | $5.93M | +0.34% | |
| 2026-01-21 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 73,280 0.0598% | $12.00 | $879,411 | -2.42% | |
| 2026-01-20 | Sale | Sun Kang | director | 43,185 0.0327% | $11.03 | $476,274 | +7.63% | |
| 2026-01-16 | Sale | Sun Kang | director | 950,548 0.7334% | $11.07 | $10.52M | +7.15% | |
| 2026-01-12 | Sale | Sun Kang | director | 506,267 0.3915% | $10.10 | $5.11M | +12.35% | |
| 2025-12-11 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 198,255 0.1396% | $10.51 | $2.08M | -10.14% | |
| 2025-11-21 | Sale | Sun Kang | Chief Executive Officer | 68,655 0.0524% | $10.08 | $692,132 | +6.87% | |
| 2025-11-21 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 25,024 0.0191% | $10.08 | $252,274 | +6.87% | |
| 2025-11-17 | Sale | Sun Kang | Chief Executive Officer | 1M 0.7793% | $10.60 | $10.6M | +3.45% | |
| 2025-08-21 | Sale | Sun Kang | Chief Executive Officer | 65,654 0.0527% | $6.82 | $447,511 | +62.59% | |
| 2025-08-21 | Sale | Wallach Sandra | Chief Financial Officer | 28,390 0.0228% | $6.82 | $193,512 | +62.59% | |
| 2025-08-21 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 19,159 0.0154% | $6.82 | $130,592 | +62.59% | |
| 2025-05-21 | Sale | Sun Kang | Chief Executive Officer | 69,786 0.0582% | $2.43 | $169,720 | +277.89% | |
| 2025-05-21 | Sale | Wallach Sandra | Chief Financial Officer | 27,595 0.023% | $2.43 | $67,111 | +277.89% | |
| 2025-05-21 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 20,366 0.017% | $2.43 | $49,530 | +277.89% | |
| 2025-02-21 | Sale | Sun Kang | Chief Executive Officer | 34,353 0.0293% | $3.13 | $107,635 | +156.83% | |
| 2025-02-21 | Sale | Wallach Sandra | Chief Financial Officer | 18,142 0.0155% | $3.13 | $56,843 | +156.83% | |
| 2025-02-21 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 9,066 0.0077% | $3.13 | $28,406 | +156.83% |
| Increased Positions | 155 | +142.2% | 33M | +76.51% |
| Decreased Positions | 48 | -44.04% | 9M | -21.91% |
| New Positions | 78 | New | 12M | New |
| Sold Out Positions | 18 | Sold Out | 2M | Sold Out |
| Total Postitions | 216 | +98.17% | 66M | +54.61% |
| Blackrock, Inc. | $65,163.00 | 5.74% | 7.46M | +2M | +41.47% | 2025-09-30 |
| Vanguard Group Inc | $56,920.00 | 5.01% | 6.51M | +2M | +36.96% | 2025-09-30 |
| Driehaus Capital Management Llc | $27,012.00 | 2.38% | 3.09M | +3M | New | 2025-09-30 |
| Morgan Stanley | $23,980.00 | 2.11% | 2.74M | +810,078 | +41.89% | 2025-09-30 |
| Citadel Advisors Llc | $21,909.00 | 1.93% | 2.51M | +2M | +796.38% | 2025-09-30 |
| Geode Capital Management, Llc | $21,194.00 | 1.87% | 2.42M | +831,281 | +52.16% | 2025-09-30 |
| Invesco Ltd. | $20,796.00 | 1.83% | 2.38M | +1M | +113.3% | 2025-09-30 |
| State Street Corp | $19,139.00 | 1.68% | 2.19M | +1M | +86.09% | 2025-09-30 |
| Deutsche Bank Ag | $18,062.00 | 1.59% | 2.07M | +2M | +3,263.62% | 2025-09-30 |
| Bnp Paribas Financial Markets | $16,990.00 | 1.5% | 1.94M | +2M | +1,117.88% | 2025-09-30 |