Amprius Technologies, Inc.
AMPX
31 insider filings · Latest: Aug 21, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Feb 21, 2025 | Feb 25 12:36 AM | Kang Sun | Proposed Sale | 34,353 | $3.13 | $107.6K | — | View → |
| Feb 21, 2025 | Feb 25 12:31 AM | Constantin Ionel Stefan | Proposed Sale | 9,066 | $3.13 | $28.4K | — | View → |
| Feb 21, 2025 | Feb 25 12:29 AM | Jonathan Bornstein | Proposed Sale | 13,527 | $3.13 | $42.4K | — | View → |
| Feb 21, 2025 | Feb 25 12:27 AM | Sandra Wallach | Proposed Sale | 18,142 | $3.13 | $56.8K | — | View → |
| Nov 21, 2024 | Nov 22 1:58 AM | JONATHAN BORNSTEIN | Proposed Sale | 18,170 | $1.98 | $36.0K | — | View → |
| Nov 21, 2024 | Nov 22 1:24 AM | Constantin Ionel Stefan | Proposed Sale | 8,575 | $1.98 | $17.0K | — | View → |
| Nov 21, 2024 | Nov 22 1:16 AM | KANG SUN | Proposed Sale | 33,779 | $1.98 | $66.9K | — | View → |
| Nov 21, 2024 | Nov 22 1:15 AM | SANDRA WALLACH | Proposed Sale | 17,158 | $1.98 | $34.0K | — | View → |
| Nov 21, 2024 | Nov 21 10:11 PM | JONATHAN G BORNSTEIN PHYLLIS BROCK TRUST | Proposed Sale | 15,000 | $1.96 | $29.4K | — | View → |
| Nov 20, 2024 | Nov 20 9:31 PM | JONATHAN G BORNSTEIN PHYLLIS BROCK TRUST | Proposed Sale | 133,536 | $1.92 | $256.9K | — | View → |
| Nov 11, 2024 | Nov 12 1:36 PM | AMPRIUS, INC. | Proposed Sale | 379,240 | $2.26 | $857.6K | — | View → |
| Nov 7, 2024 | Nov 7 10:04 PM | AMPRIUS, INC. | Proposed Sale | 40,386 | $1.32 | $53.2K | — | View → |
| Oct 24, 2024 | Oct 25 9:48 PM | MIRRO JUSTIN E | Proposed Sale | 3,268,042 | $1.45 | $4.7M | — | View → |
| Sep 3, 2024 | Sep 5 1:52 AM | Justin Mirro | Proposed Sale | 1,000,000 | $0.986 | $986.0K | — | View → |
| Sep 3, 2024 | Sep 3 9:17 PM | AMPRIUS, INC | Proposed Sale | 1,500,000 | $1.11 | $1.7M | — | View → |
| Aug 21, 2024 | Aug 22 8:53 PM | Constantin Ionel Stefan | Proposed Sale | 8,800 | $1.04 | $9.1K | — | View → |
| Aug 21, 2024 | Aug 22 8:52 PM | SANDRA WALLACH | Proposed Sale | 17,606 | $1.04 | $18.2K | — | View → |
| Aug 21, 2024 | Aug 22 8:51 PM | KANG SUN | Proposed Sale | 33,333 | $1.04 | $34.5K | — | View → |
| Aug 21, 2024 | Aug 22 8:49 PM | Jonathan Bornstein | Proposed Sale | 18,644 | $1.04 | $19.3K | — | View → |
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Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Apr 1, 2026 | Apr 2 8:51 PM | Sun KangDirector | Option Exercise | 1,500,000 | $3.68 | 1,787,007(D) | View → |
| Mar 12, 2026 | Mar 13 10:08 PM | Wen Hsuan HsiehDirector | Option Exercise | 270,251 | $2.61 | 0(D) | View → |
| Mar 12, 2026 | Mar 12 11:25 PM | Steven ChuDirector | Option Exercise | 155,565 | $2.61 | 0(D) | View → |
| Mar 10, 2026 | Mar 12 11:25 PM | Steven ChuDirector | Option Exercise | 104,132 | $0.62 | 69,422(D) | View → |
| Jan 28, 2026 | Jan 30 11:02 PM | Constantin Ionel StefanChief Technology Officer | Option Exercise | 39,690 | $0.62 | 0(D) | View → |
| Jan 23, 2026 | Jan 23 10:36 PM | Constantin Ionel StefanChief Technology Officer | Option Exercise | 1,600 | $0.05 | 39,600(D) | View → |
| Jan 22, 2026 | Jan 23 10:36 PM | Constantin Ionel StefanChief Technology Officer | Option Exercise | 492,827 | $0.45 | 0(D) | View → |
| Jan 21, 2026 | Jan 23 10:36 PM | Constantin Ionel StefanChief Technology Officer | Option Exercise | 73,280 | $0.62 | 166,104(D) | View → |
| Jan 20, 2026 | Jan 20 10:33 PM | Sun KangDirector | Option Exercise | 43,185 | $1.78 | 1,312,505(D) | View → |
| Jan 16, 2026 | Jan 20 10:33 PM | Sun KangDirector | Option Exercise | 950,548 | $2.50 | 1,355,690(D) | View → |