Companies / Amprius Technologies, Inc. / Activity
Activity — Amprius Technologies, Inc.
64 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Jun 12, 2026 | Chu Steven Director | Grant | Common stock | $0 | +10K +8.19% | 137,762 0.09% of shares | low |
| Jun 12, 2026 | Bayless Kathleen a Director | Grant | Common stock | $0 | +10K +5.07% | 216,120 0.15% of shares | low |
| Mar 4, 2026 | Stepien Thomas M CEO | Grant | Common stock | $0 | +150K +24.59% | 760,000 0.52% of shares | low |
| Mar 4, 2026 | Stefan Constantin Ionel Executive | Grant | Common stock | $0 | +110K +15.21% | 833,330 0.57% of shares | low |
| Mar 4, 2026 | Rodriguez Ricardo C. Executive | Grant | Common stock | $0 | +150K +75.00% | 350,000 0.24% of shares | low |
| Mar 4, 2026 | Rodriguez Ricardo C. Executive | Grant | Common stock | $0 | +150K +75.00% | 350,000 0.24% of shares | low |
| Jan 28, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $56 | +90 +0.01% | 748,786 0.51% of shares | low |
| Jan 23, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $80 | +2K +0.21% | 750,296 0.51% of shares | low |
| Jan 21, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $792 | +16K +2.00% | 806,093 0.55% of shares | low |
| Jan 21, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $794 | +16K +1.97% | 821,976 0.56% of shares | low |
| Jan 28, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $2.0K | +40K +5.29% | 788,386 0.54% of shares | low |
| Jan 22, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $8.3K | +166K +15.45% | 1,241,523 0.85% of shares | low |
| Jan 22, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $12.7K | +254K +33.92% | 1,002,624 0.69% of shares | low |
| Jan 23, 2026 | Stefan Constantin Ionel Executive | Sell | Common stock | $19.2K | -2K -0.21% | 748,696 0.51% of shares | low |
| Jan 21, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $25.8K | +42K +5.55% | 790,259 0.54% of shares | low |
| Jan 22, 2026 | Stefan Constantin Ionel Executive | Exercise | Common stock | $32.8K | +73K +7.26% | 1,075,419 0.74% of shares | low |
| Mar 12, 2026 | Chu Steven Director | Exercise | Common stock | $43.0K | +69K +32.52% | 282,904 0.19% of shares | low |
| Mar 10, 2026 | Chu Steven Director | Exercise | Common stock | $64.6K | +104K +54.85% | 293,971 0.20% of shares | low |
| Jan 20, 2026 | Sun Kang Director | Exercise | Common stock | $76.9K | +43K +3.08% | 1,446,836 0.99% of shares | low |
| Mar 12, 2026 | Chu Steven Director | Sell | Common stock | $103.1K | -6K -4.19% | 127,339 0.09% of shares | medium |
| Jan 12, 2026 | Sun Kang Director | Exercise | Common stock | $112.1K | +181K +12.88% | 1,584,453 1.08% of shares | low |
| Jan 16, 2026 | Sun Kang Director | Exercise | Common stock | $178.4K | +100K +4.45% | 2,354,199 1.61% of shares | low |
| Mar 12, 2026 | Chu Steven Director | Exercise | Common stock | $224.8K | +86K +67.65% | 213,482 0.15% of shares | low |
| Feb 23, 2026 | Stefan Constantin Ionel Executive | Sell | Common stock | $257.6K | -25K -3.39% | 723,330 0.50% of shares | medium |
| Jan 12, 2026 | Sun Kang Director | Exercise | Common stock | $293.0K | +117K +6.54% | 1,909,918 1.31% of shares | low |
| May 26, 2026 | Dixon Donald R Director | Sell | Common stock | $320.3K | -18K -3.56% | 484,380 0.33% of shares | medium |
| Jan 20, 2026 | Sun Kang Director | Sell | Common stock | $476.3K | -43K -2.98% | 1,403,651 0.96% of shares | medium |
| Jan 28, 2026 | Stefan Constantin Ionel Executive | Sell | Common stock | $476.4K | -40K -5.03% | 748,696 0.51% of shares | medium |
| Jan 12, 2026 | Sun Kang Director | Exercise | Common stock | $508.2K | +208K +13.14% | 1,792,717 1.23% of shares | low |
| Feb 23, 2026 | Sun Kang Director | Sell | Common stock | $622.0K | -61K -4.36% | 1,342,400 0.92% of shares | medium |
| Mar 12, 2026 | HSIEH Wen Hsuan Director | Exercise | Common stock | $705.4K | +270K +144.26% | 457,590 0.31% of shares | low |
| Jun 9, 2026 | Dixon Donald R Director | Sell | Common stock | $765.2K | -40K -8.26% | 444,380 0.30% of shares | medium |
| Jan 21, 2026 | Stefan Constantin Ionel Executive | Sell | Common stock | $879.4K | -73K -8.92% | 748,696 0.51% of shares | medium |
| Mar 12, 2026 | Chu Steven Director | Sell | Common stock | $910.7K | -50K -27.34% | 132,904 0.09% of shares | medium |
| Mar 23, 2026 | Sun Kang Director | Sell | Common stock | $1.24M | -65K -53.56% | 56,406 0.04% of shares | medium |
| Jun 15, 2026 | Dixon Donald R Director | Sell | Common stock | $1.46M | -85K -19.13% | 359,380 0.25% of shares | medium |
| Mar 12, 2026 | Chu Steven Director | Sell | Common stock | $1.86M | -100K -35.35% | 182,904 0.13% of shares | medium |
| Jan 16, 2026 | Sun Kang Director | Exercise | Common stock | $2.13M | +850K +60.58% | 2,253,989 1.54% of shares | low |
| Mar 12, 2026 | HSIEH Wen Hsuan Director | Sell | Common stock | $2.38M | -131K -74.62% | 44,444 0.03% of shares | medium |
| Mar 23, 2026 | Sun Kang Director | Sell | Common stock | $2.86M | -153K -55.72% | 121,452 0.08% of shares | medium |
| Mar 10, 2026 | Chu Steven Director | Sell | Common stock | $2.99M | -167K -56.68% | 127,339 0.09% of shares | medium |
| Jan 12, 2026 | Sun Kang Director | Sell | Common stock | $5.11M | -506K -26.51% | 1,403,651 0.96% of shares | medium |
| Mar 12, 2026 | HSIEH Wen Hsuan Director | Sell | Common stock | $5.24M | -283K -61.74% | 175,090 0.12% of shares | medium |
| Jan 22, 2026 | Stefan Constantin Ionel Executive | Sell | Common stock | $5.93M | -493K -39.70% | 748,696 0.51% of shares | medium |
| Jan 16, 2026 | Sun Kang Director | Sell | Common stock | $10.52M | -951K -40.38% | 1,403,651 0.96% of shares | medium |
| Jan 28, 2026 | Stefan Constantin Ionel Executive | Exercise | Stock Option (right to buy) | — | -40K -100.00% | 0 0.00% of shares | low |
| Jan 28, 2026 | Stefan Constantin Ionel Executive | Exercise | Stock Option (right to buy) | — | -90 -100.00% | 0 0.00% of shares | low |
| Jan 23, 2026 | Stefan Constantin Ionel Executive | Exercise | Stock Option (right to buy) | — | -2K -3.88% | 39,600 0.03% of shares | low |
| Jan 22, 2026 | Stefan Constantin Ionel Executive | Exercise | Stock Option (right to buy) | — | -166K -100.00% | 0 0.00% of shares | low |
| Jan 22, 2026 | Stefan Constantin Ionel Executive | Exercise | Stock Option (right to buy) | — | -73K -100.00% | 0 0.00% of shares | low |