| $1B | ||
| $100M | ||
| $54M | ||
| $40M | ||
| $32M | ||
| $31M |
Buys | $0 | 0 | 0 |
Sells | $85,678,291 | 32 | 100 |
| Stepien Thomas M | Chief Executive Officer | 0 | $0 | 5 | $1.34M | $-1.34M |
| DIXON DONALD R | director | 0 | $0 | 3 | $2.54M | $-2.54M |
| Chu Steven | director | 0 | $0 | 2 | $5.86M | $-5.86M |
| HSIEH Wen Hsuan | director | 0 | $0 | 1 | $7.62M | $-7.62M |
| Stefan Constantin Ionel | Chief Technology Officer | 0 | $0 | 10 | $10.69M | $-10.69M |
| Sun Kang | Chief Executive Officer | 0 | $0 | 11 | $57.62M | $-57.62M |
Amprius Technologies, Inc. is a company primarily focused on the development, production, and supply of advanced lithium-ion battery solutions. Their innovative product line notably includes cutting-edge silicon nanowire anode lithium-ion batteries. The firm's technological offerings cater to significant sectors such as aerospace, defense, and electric vehicle manufacturing. Founded in 2008, Amprius Technologies, Inc. operates from its headquarters located in Fremont, California.
Over the last 12 months, insiders at Amprius Technologies, Inc. have bought $0 and sold $85.68M worth of Amprius Technologies, Inc. stock.
On average, over the past 5 years, insiders at Amprius Technologies, Inc. have bought $0 and sold $24.62M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
| 2026-08-24 | Sale | Stepien Thomas M | Chief Executive Officer | 8,000 0.0057% | $10.03 | $80,240 | -4.06% | |
| 2026-08-21 | Sale | Sun Kang | director | 62,101 0.0433% | $10.34 | $642,186 | -8.41% | |
| 2026-08-21 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 29,681 0.0207% | $10.34 | $306,931 | -8.41% | |
| 2026-08-21 | Sale | Stepien Thomas M | Chief Executive Officer | 23,529 0.0164% | $10.34 | $243,313 | -8.41% | |
| 2026-06-15 | Sale | DIXON DONALD R | director | 85,000 0.0613% | $17.17 | $1.46M | -41.29% | |
| 2026-06-09 | Sale | DIXON DONALD R | director | 40,000 0.031% | $19.13 | $765,200 | -43.23% | |
| 2026-06-04 | Sale | Stepien Thomas M | Chief Executive Officer | 2,000 0.0013% | $20.97 | $41,940 | -56.03% | |
| 2026-05-27 | Sale | Sun Kang | director | 356 0.0003% | $17.19 | $6,121 | -41.03% | |
| 2026-05-27 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 3,208 0.0023% | $17.19 | $55,157 | -41.03% | |
| 2026-05-27 | Sale | Stepien Thomas M | Chief Executive Officer | 4,375 0.0031% | $17.19 | $75,222 | -41.03% | |
| 2026-05-26 | Sale | DIXON DONALD R | director | 17,895 0.0132% | $17.90 | $320,253 | -43.19% | |
| 2026-05-21 | Sale | Sun Kang | director | 67,796 0.0463% | $14.79 | $1M | -33.66% | |
| 2026-05-21 | Sale | Stefan Constantin Ionel | Chief Technology Officer | 28,812 0.0197% | $14.79 | $426,083 | -33.66% | |
| 2026-05-21 | Sale | Stepien Thomas M | Chief Executive Officer | 60,702 0.0414% | $14.79 | $897,685 | -33.66% | |
| 2026-04-01 | Sale | Sun Kang | director | 1.5M 1.122% | $15.91 | $23.86M | -25.39% | |
| 2026-03-23 | Sale | Sun Kang | director | 217,869 0.168% | $18.80 | $4.1M | -37.02% | |
| 2026-03-12 | Sale | Chu Steven | director | 155,565 0.1206% | $18.50 | $2.88M | -34.75% | |
| 2026-03-12 | Sale | HSIEH Wen Hsuan | director | 413,146 0.3193% | $18.44 | $7.62M | -34.75% | |
| 2026-03-10 | Sale | Chu Steven | director | 166,632 0.1291% | $17.92 | $2.99M | -32.89% | |
| 2026-02-23 | Sale | Sun Kang | director | 61,251 0.0467% | $10.16 | $622,035 | +17.75% |
| Increased Positions | 135 | +72.97% | 17M | +26.01% |
| Decreased Positions | 83 | -44.86% | 12M | -19.29% |
| New Positions | 50 | New | 7M | New |
| Sold Out Positions | 31 | Sold Out | 3M | Sold Out |
| Total Postitions | 237 | +28.11% | 68M | +6.72% |
| 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 |