AMPX · Amprius Technologies Inc. Common Stock
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| Amprius, Inc. 10% Owner | ▼ Sell | Other | 2,500,071 Shares held | 10/23/2024 | View profile |
| Sun Kang Director | ▼ Sell | Open Market | 1,218,397 Shares held | 8/21/2026 | View profile |
| MIRRO JUSTIN E Director | ▼ Sell | Open Market | 1,195,000 Shares held | 9/5/2024 | View profile |
| Wallach Sandra Chief Financial Officer | ▼ Sell | Open Market | 1,005,275 Shares held | 8/21/2025 | View profile |
| Stefan Constantin Ionel Chief Technology Officer | ▼ Sell | Open Market | 771,629 Shares held | 8/21/2026 | View profile |
| Bornstein Jonathan President of Amprius Lab | ▲ Buy | Option Exercise | 422,668 Shares held | 3/10/2025 | View profile |
| DIXON DONALD R Director | ▼ Sell | Open Market | 359,380 Shares held | 6/15/2026 | View profile |
| RODRIGUEZ RICARDO C. Chief Financial Officer | ▲ Buy | Grant | 350,000 Shares held | 3/4/2026 | View profile |
| Livingston Satterthwaite Director | ▲ Buy | Grant | 346,506 Shares held | 6/12/2026 | View profile |
| BAYLESS KATHLEEN A Director | ▲ Buy | Grant | 216,120 Shares held | 6/12/2026 | View profile |
| Gustanski Mary Director | ▲ Buy | Grant | 146,396 Shares held | 6/7/2024 | View profile |
| Chu Steven Director | ▲ Buy | Grant | 137,762 Shares held | 6/12/2026 | View profile |
| HSIEH Wen Hsuan Director | ▼ Sell | Open Market | 44,444 Shares held | 3/12/2026 | View profile |
| Stepien Thomas M Chief Executive Officer | ▲ Buy | Grant | 37,260 Shares held | 8/25/2026 | View profile |
| Kensington Capital Sponsor IV LLC | ▼ Sell | Other | 0 Shares held | 9/14/2022 | View profile |
Transaction History
| Stepien Thomas M | ▼ Sell | Gift | 5,000 | $0 | 8/25/2026 |
| Stepien Thomas M | ▼ Sell | Gift | 5,000 | $0 | 8/25/2026 |
| Stepien Thomas M | ▼ Sell | Gift | 5,000 | $0 | 8/25/2026 |
| Stepien Thomas M | ▼ Sell | Gift | 346 | $0 | 8/25/2026 |
| Stepien Thomas M | ▲ Buy | Grant | 346 | $0 | 8/25/2026 |
| Stepien Thomas M | ▼ Sell | Open Market | 8,000 | $80K | 8/24/2026 |
| Sun Kang | ▼ Sell | Open Market | 62,101 | $642K | 8/21/2026 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 29,681 | $307K | 8/21/2026 |
| Stepien Thomas M | ▼ Sell | Open Market | 23,529 | $243K | 8/21/2026 |
| DIXON DONALD R | ▼ Sell | Open Market | 85,000 | $1.5M | 6/15/2026 |
| BAYLESS KATHLEEN A | ▲ Buy | Grant | 10,423 | $0 | 6/12/2026 |
| Livingston Satterthwaite | ▲ Buy | Grant | 10,423 | $0 | 6/12/2026 |
| DIXON DONALD R | ▲ Buy | Grant | 10,423 | $0 | 6/12/2026 |
| Chu Steven | ▲ Buy | Grant | 10,423 | $0 | 6/12/2026 |
| DIXON DONALD R | ▼ Sell | Open Market | 40,000 | $765K | 6/9/2026 |
| Stepien Thomas M | ▼ Sell | Gift | 30,384 | $0 | 6/4/2026 |
| Stepien Thomas M | ▼ Sell | Gift | 36,914 | $0 | 6/4/2026 |
| Stepien Thomas M | ▼ Sell | Gift | 36,914 | $0 | 6/4/2026 |
| Stepien Thomas M | ▼ Sell | Open Market | 2,000 | $42K | 6/4/2026 |
| Sun Kang | ▼ Sell | Open Market | 356 | $6K | 5/27/2026 |
| Stepien Thomas M | ▼ Sell | Open Market | 4,375 | $75K | 5/27/2026 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 3,208 | $55K | 5/27/2026 |
| DIXON DONALD R | ▼ Sell | Open Market | 17,895 | $320K | 5/26/2026 |
| Sun Kang | ▼ Sell | Open Market | 67,796 | $1.0M | 5/21/2026 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 28,812 | $426K | 5/21/2026 |
| Stepien Thomas M | ▼ Sell | Open Market | 60,702 | $898K | 5/21/2026 |
| Sun Kang | ▲ Buy | Grant | 6,250 | $0 | 5/5/2026 |
| Sun Kang | ▲ Buy | Option Exercise | 1,312,505 | $2.3M | 4/1/2026 |
| Sun Kang | ▲ Buy | Option Exercise | 187,495 | $690K | 4/1/2026 |
| Sun Kang | ▼ Sell | Open Market | 1,250,963 | $19.7M | 4/1/2026 |
| Sun Kang | ▼ Sell | Open Market | 249,037 | $4.2M | 4/1/2026 |
| Sun Kang | ▼ Sell | Open Market | 152,823 | $2.9M | 3/23/2026 |
| Sun Kang | ▼ Sell | Open Market | 65,046 | $1.2M | 3/23/2026 |
| HSIEH Wen Hsuan | ▲ Buy | Option Exercise | 270,251 | $705K | 3/12/2026 |
| HSIEH Wen Hsuan | ▼ Sell | Open Market | 282,500 | $5.2M | 3/12/2026 |
| HSIEH Wen Hsuan | ▼ Sell | Open Market | 130,646 | $2.4M | 3/12/2026 |
| Chu Steven | ▲ Buy | Option Exercise | 86,143 | $225K | 3/12/2026 |
| Chu Steven | ▲ Buy | Option Exercise | 69,422 | $43K | 3/12/2026 |
| Chu Steven | ▼ Sell | Open Market | 100,000 | $1.9M | 3/12/2026 |
| Chu Steven | ▼ Sell | Open Market | 50,000 | $911K | 3/12/2026 |
| Chu Steven | ▼ Sell | Open Market | 5,565 | $103K | 3/12/2026 |
| Chu Steven | ▲ Buy | Option Exercise | 104,132 | $65K | 3/10/2026 |
| Chu Steven | ▼ Sell | Open Market | 166,632 | $3.0M | 3/10/2026 |
| RODRIGUEZ RICARDO C. | ▲ Buy | Grant | 150,000 | $0 | 3/4/2026 |
| Stepien Thomas M | ▲ Buy | Grant | 150,000 | $0 | 3/4/2026 |
| Stefan Constantin Ionel | ▲ Buy | Grant | 110,000 | $0 | 3/4/2026 |
| Sun Kang | ▼ Sell | Open Market | 61,251 | $622K | 2/23/2026 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 25,366 | $258K | 2/23/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 90 | $56 | 1/28/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 39,600 | $2K | 1/28/2026 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 39,690 | $476K | 1/28/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 1,600 | $80 | 1/23/2026 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 1,600 | $19K | 1/23/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 72,795 | $33K | 1/22/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 166,104 | $8K | 1/22/2026 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 492,827 | $5.9M | 1/22/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 253,928 | $13K | 1/22/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 41,563 | $26K | 1/21/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 15,834 | $792 | 1/21/2026 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 15,883 | $794 | 1/21/2026 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 73,280 | $879K | 1/21/2026 |
| Sun Kang | ▲ Buy | Option Exercise | 43,185 | $77K | 1/20/2026 |
| Sun Kang | ▼ Sell | Open Market | 43,185 | $476K | 1/20/2026 |
| Sun Kang | ▲ Buy | Option Exercise | 850,338 | $2.1M | 1/16/2026 |
| Sun Kang | ▲ Buy | Option Exercise | 100,210 | $178K | 1/16/2026 |
| Sun Kang | ▼ Sell | Open Market | 950,548 | $10.5M | 1/16/2026 |
| Sun Kang | ▲ Buy | Option Exercise | 180,802 | $112K | 1/12/2026 |
| Sun Kang | ▲ Buy | Option Exercise | 208,264 | $508K | 1/12/2026 |
| Sun Kang | ▲ Buy | Option Exercise | 117,201 | $293K | 1/12/2026 |
| Sun Kang | ▼ Sell | Open Market | 506,267 | $5.1M | 1/12/2026 |
| Stepien Thomas M | ▲ Buy | Grant | 200,000 | $0 | 12/19/2025 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 125,000 | $6K | 12/11/2025 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 198,255 | $2.1M | 12/11/2025 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 25,024 | $252K | 11/21/2025 |
| Sun Kang | ▼ Sell | Open Market | 68,655 | $692K | 11/21/2025 |
| Sun Kang | ▲ Buy | Option Exercise | 202,934 | $199K | 11/17/2025 |
| Sun Kang | ▲ Buy | Option Exercise | 727,950 | $36K | 11/17/2025 |
| Sun Kang | ▲ Buy | Option Exercise | 27,463 | $17K | 11/17/2025 |
| Sun Kang | ▲ Buy | Option Exercise | 41,653 | $26K | 11/17/2025 |
| Sun Kang | ▼ Sell | Open Market | 1,000,000 | $10.6M | 11/17/2025 |
| RODRIGUEZ RICARDO C. | ▲ Buy | Grant | 200,000 | $0 | 10/6/2025 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 19,159 | $131K | 8/21/2025 |
| Wallach Sandra | ▼ Sell | Open Market | 28,390 | $194K | 8/21/2025 |
| Sun Kang | ▼ Sell | Open Market | 65,654 | $448K | 8/21/2025 |
| HSIEH Wen Hsuan | ▲ Buy | Grant | 44,444 | $0 | 6/13/2025 |
| DIXON DONALD R | ▲ Buy | Grant | 44,444 | $0 | 6/13/2025 |
| Livingston Satterthwaite | ▲ Buy | Grant | 44,444 | $0 | 6/13/2025 |
| BAYLESS KATHLEEN A | ▲ Buy | Grant | 44,444 | $0 | 6/13/2025 |
| Chu Steven | ▲ Buy | Grant | 44,444 | $0 | 6/13/2025 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 20,366 | $50K | 5/21/2025 |
| Wallach Sandra | ▼ Sell | Open Market | 27,595 | $67K | 5/21/2025 |
| Sun Kang | ▼ Sell | Open Market | 69,786 | $170K | 5/21/2025 |
| Stepien Thomas M | ▲ Buy | Grant | 400,000 | $0 | 5/1/2025 |
| Sun Kang | ▲ Buy | Grant | 599,400 | $0 | 3/19/2025 |
| Wallach Sandra | ▲ Buy | Grant | 383,260 | $0 | 3/19/2025 |
| Stefan Constantin Ionel | ▲ Buy | Grant | 461,540 | $0 | 3/19/2025 |
| Stefan Constantin Ionel | ▲ Buy | Option Exercise | 3,471 | $3K | 3/14/2025 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 3,471 | $3K | 3/10/2025 |
| Sun Kang | ▼ Sell | Open Market | 34,353 | $108K | 2/21/2025 |
| Wallach Sandra | ▼ Sell | Open Market | 18,142 | $57K | 2/21/2025 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 9,066 | $28K | 2/21/2025 |
| Bornstein Jonathan | ▼ Sell | Open Market | 13,527 | $42K | 2/21/2025 |
| Sun Kang | ▼ Sell | Open Market | 33,779 | $66K | 11/21/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 15,000 | $29K | 11/21/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 18,170 | $36K | 11/21/2024 |
| Wallach Sandra | ▼ Sell | Open Market | 17,158 | $34K | 11/21/2024 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 8,575 | $17K | 11/21/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 133,536 | $257K | 11/20/2024 |
| Amprius, Inc. | ▼ Sell | Other | 5,500,000 | — | 10/23/2024 |
| Amprius, Inc. | ▼ Sell | Other | 57,195,926 | — | 10/23/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 110,000 | $89K | 9/5/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 140,000 | $113K | 9/5/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 150,000 | $141K | 9/4/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 175,000 | $165K | 9/4/2024 |
| Amprius, Inc. | ▼ Sell | Open Market | 13,255 | $13K | 9/4/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 60,000 | $60K | 9/3/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 75,000 | $75K | 9/3/2024 |
| Amprius, Inc. | ▼ Sell | Open Market | 6,300 | $6K | 9/3/2024 |
| Wallach Sandra | ▼ Sell | Open Market | 17,606 | $18K | 8/21/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 18,644 | $19K | 8/21/2024 |
| Sun Kang | ▼ Sell | Open Market | 33,333 | $35K | 8/21/2024 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 8,800 | $9K | 8/21/2024 |
| Livingston Satterthwaite | ▲ Buy | Grant | 283,019 | $0 | 8/13/2024 |
| MIRRO JUSTIN E | ▲ Buy | Grant | 925,900 | — | 7/23/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 65,000 | $74K | 6/14/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 195,000 | $221K | 6/14/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 195,000 | $237K | 6/13/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 65,000 | $79K | 6/13/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 210,000 | $273K | 6/12/2024 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 70,000 | $91K | 6/12/2024 |
| HSIEH Wen Hsuan | ▲ Buy | Grant | 125,000 | $0 | 6/7/2024 |
| BAYLESS KATHLEEN A | ▲ Buy | Grant | 125,000 | $0 | 6/7/2024 |
| Chu Steven | ▲ Buy | Grant | 125,000 | $0 | 6/7/2024 |
| Gustanski Mary | ▲ Buy | Grant | 114,583 | $0 | 6/7/2024 |
| MIRRO JUSTIN E | ▲ Buy | Grant | 125,000 | $0 | 6/7/2024 |
| DIXON DONALD R | ▲ Buy | Grant | 125,000 | $0 | 6/7/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 8,731 | $12K | 5/22/2024 |
| Wallach Sandra | ▼ Sell | Open Market | 8,245 | $11K | 5/22/2024 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 4,121 | $6K | 5/22/2024 |
| Sun Kang | ▼ Sell | Open Market | 15,611 | $21K | 5/22/2024 |
| Wallach Sandra | ▼ Sell | Open Market | 10,549 | $14K | 5/21/2024 |
| Stefan Constantin Ionel | ▼ Sell | Open Market | 5,272 | $7K | 5/21/2024 |
| Sun Kang | ▼ Sell | Open Market | 19,973 | $27K | 5/21/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 11,171 | $15K | 5/21/2024 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 1,007,867 | $50K | 4/12/2024 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 125,983 | $6K | 4/2/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 125,983 | $300K | 4/2/2024 |
| Stefan Constantin Ionel | ▲ Buy | Grant | 374,570 | $0 | 3/19/2024 |
| Bornstein Jonathan | ▲ Buy | Grant | 558,930 | $0 | 3/19/2024 |
| Wallach Sandra | ▲ Buy | Grant | 749,700 | $0 | 3/19/2024 |
| Sun Kang | ▲ Buy | Grant | 1,419,670 | $0 | 3/19/2024 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 40,200 | $2K | 3/6/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 40,200 | $112K | 3/6/2024 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 109,800 | $5K | 3/5/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 109,800 | $320K | 3/5/2024 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 150,000 | $8K | 2/6/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 150,000 | $664K | 2/6/2024 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 150,000 | $8K | 1/2/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 124,634 | $538K | 1/2/2024 |
| Bornstein Jonathan | ▼ Sell | Open Market | 25,366 | $128K | 1/2/2024 |
| Amprius, Inc. | ▼ Sell | Open Market | 100,000 | $354K | 12/15/2023 |
| Amprius, Inc. | ▼ Sell | Open Market | 100,000 | $355K | 12/14/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 170,000 | $605K | 12/14/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 85,000 | $302K | 12/14/2023 |
| Amprius, Inc. | ▼ Sell | Open Market | 100,000 | $362K | 12/13/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 60,000 | $221K | 12/13/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 30,000 | $110K | 12/13/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 40,000 | $153K | 12/12/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 20,000 | $76K | 12/12/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 20,000 | $78K | 12/7/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 10,000 | $39K | 12/7/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 54,477 | $3K | 12/7/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 54,477 | $211K | 12/7/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 20,000 | $81K | 12/6/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 10,000 | $40K | 12/6/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 47,767 | $2K | 12/6/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 47,767 | $192K | 12/6/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 20,000 | $87K | 12/5/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 10,000 | $43K | 12/5/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 47,756 | $2K | 12/5/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 47,756 | $204K | 12/5/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 30,000 | $126K | 11/30/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 15,000 | $63K | 11/30/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 40,000 | $160K | 11/29/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 20,000 | $80K | 11/29/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 30,000 | $111K | 11/28/2023 |
| MIRRO JUSTIN E | ▼ Sell | Open Market | 15,000 | $56K | 11/28/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 27,631 | $1K | 11/20/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 27,631 | $106K | 11/20/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 49,508 | $2K | 11/9/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 49,508 | $140K | 11/9/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 48,052 | $2K | 11/8/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 48,052 | $147K | 11/8/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 24,809 | $1K | 11/7/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 24,809 | $80K | 11/7/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 22,969 | $1K | 10/12/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 22,969 | $90K | 10/12/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 56,702 | $3K | 10/11/2023 |
| Bornstein Jonathan | ▼ Sell | Open Market | 56,702 | $236K | 10/11/2023 |
| Bornstein Jonathan | ▲ Buy | Option Exercise | 70,329 | $4K | 10/10/2023 |