| Aug 25, 2026 (view filing)5:22 PM ET | Aug 21 | 4 days | Sun KangDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −62.1K | $10.34 | −$642.2K | −4.8%1.22M after | |
| Aug 25, 2026 (view filing)5:22 PM ET | Aug 21 | 4 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −29.7K | $10.34 | −$306.9K | −3.7%771.6K after | |
| Aug 25, 2026 (view filing)5:21 PM ET | Aug 21-24 | 4 days | Stepien Thomas MChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −31.5K | $10.26 | −$323.6K | −5.0%594.1K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Jun 16, 2026 (view filing) | Jun 15 | 1 day | Dixon Donald RDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −85.0K | $17.17 | −$1.46M | −19.1%359.4K after | |
| Jun 11, 2026 (view filing) | Jun 9 | 2 days | Dixon Donald RDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −40.0K | $19.13 | −$765.2K | −8.3%444.4K after | |
| Jun 5, 2026 (view filing) | Jun 4 | 1 day | Stepien Thomas MChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −2.00K | $20.97 | −$41.9K | −0.3%625.6K after | |
| May 28, 2026 (view filing) | May 27 | 1 day | Stepien Thomas MChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −4.38K | $17.19 | −$75.2K | −0.6%694.9K after | |
| May 28, 2026 (view filing) | May 27 | 1 day | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −3.21K | $17.19 | −$55.1K | −0.4%801.3K after | |
| May 28, 2026 (view filing) | May 27 | 1 day | Sun KangDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −356 | $17.19 | −$6.12K | 0.0%1.28M after | |
| May 28, 2026 (view filing) | May 26 | 2 days | Dixon Donald RDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −17.9K | $17.90 | −$320.3K | −3.6%484.4K after | |
| May 26, 2026 (view filing) | May 21 | 5 days | Stepien Thomas MChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −60.7K | $14.79 | −$897.8K | −8.0%699.3K after | |
| May 26, 2026 (view filing) | May 21 | 5 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −28.8K | $14.79 | −$426.1K | −3.5%804.5K after | |
| May 26, 2026 (view filing) | May 21 | 5 days | Sun KangDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −67.8K | $14.79 | −$1.00M | −5.0%1.28M after | |
| Apr 2, 2026 (view filing) | Apr 1 | 1 day | Sun KangDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −1.50M | $15.90 | −$23.9M | −52.8%1.34M after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Mar 24, 2026 (view filing) | Mar 23 | 1 day | Sun KangDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −217.9K | $18.80 | −$4.10M | −79.4%56.4K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Mar 13, 2026 (view filing) | Mar 12 | 1 day | HSIEH Wen HsuanDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −413.1K | $18.45 | −$7.62M | −90.3%44.4K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Mar 12, 2026 (view filing) | Mar 10-12 | 2 days | Chu StevenDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −322.2K | $18.20 | −$5.86M | −71.7%127.3K after | 4 lotsThis row combines 4 trades of the same kind from one filing. The price is the value-weighted average. |
| Feb 24, 2026 (view filing) | Feb 23 | 1 day | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −25.4K | $10.16 | −$257.7K | −3.4%723.3K after | |
| Feb 24, 2026 (view filing) | Feb 23 | 1 day | Sun KangDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −61.3K | $10.16 | −$622.3K | −4.4%1.34M after | |
| Jan 30, 2026 (view filing)6:02 PM ET | Jan 28 | 2 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −39.7K | $12.00 | −$476.4K | −5.0%748.7K after | |
| Jan 23, 2026 (view filing)5:36 PM ET | Jan 21-23 | 2 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −567.7K | $12.03 | −$6.83M | −43.1%748.7K after | 3 lotsThis row combines 3 trades of the same kind from one filing. The price is the value-weighted average. |
| Jan 20, 2026 (view filing) | Jan 16-20 | 4 days | Sun KangDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −993.7K | $11.07 | −$11.0M | −41.5%1.40M after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Jan 14, 2026 (view filing) | Jan 12 | 2 days | Sun KangDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −506.3K | $10.10 | −$5.11M | −26.5%1.40M after | |
| Dec 15, 2025 (view filing)6:25 PM ET | Dec 11 | 4 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −198.3K | $10.51 | −$2.08M | −20.9%748.7K after | |
| Nov 25, 2025 (view filing) | Nov 21 | 4 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −25.0K | $10.08 | −$252.2K | −3.0%822.0K after | |
| Nov 25, 2025 (view filing) | Nov 21 | 4 days | Sun KangChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −68.7K | $10.08 | −$692.0K | −4.7%1.40M after | |
| Nov 19, 2025 (view filing)5:49 PM ET | Nov 17 | 2 days | Sun KangChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −1.00M | $10.60 | −$10.6M | −40.4%1.47M after | |
| Aug 25, 2025 (view filing) | Aug 21 | 4 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −19.2K | $6.82 | −$130.7K | −2.2%847.0K after | |
| Aug 25, 2025 (view filing) | Aug 21 | 4 days | Wallach SandraChief Financial Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −28.4K | $6.82 | −$193.6K | −2.7%1.01M after | |
| Aug 25, 2025 (view filing) | Aug 21 | 4 days | Sun KangChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −65.7K | $6.82 | −$447.8K | −4.3%1.47M after | |
| May 23, 2025 (view filing) | May 21 | 2 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −20.4K | $2.43 | −$49.5K | −2.3%866.1K after | |
| May 23, 2025 (view filing) | May 21 | 2 days | Wallach SandraChief Financial Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −27.6K | $2.43 | −$67.1K | −2.6%1.03M after | |
| May 23, 2025 (view filing) | May 21 | 2 days | Sun KangChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −69.8K | $2.43 | −$169.6K | −3.7%1.81M after | |
| Feb 24, 2025 (view filing) | Feb 21 | 3 days | Bornstein JonathanPresident of Amprius Lab | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −13.5K | $3.13 | −$42.3K | −3.1%419.2K after | |
| Feb 24, 2025 (view filing) | Feb 21 | 3 days | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −9.07K | $3.13 | −$28.4K | −2.1%421.5K after | |
| Feb 24, 2025 (view filing) | Feb 21 | 3 days | Wallach SandraChief Financial Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −18.1K | $3.13 | −$56.8K | −2.6%678.0K after | |
| Feb 24, 2025 (view filing) | Feb 21 | 3 days | Sun KangChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −34.4K | $3.13 | −$107.5K | −2.6%1.28M after | |
| Nov 22, 2024 (view filing) | Nov 20-21 | 2 days | Bornstein JonathanPresident of Amprius Lab | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −148.5K | $1.92 | −$285.8K | −12.5%1.04M after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Nov 22, 2024 (view filing) | Nov 21 | 1 day | Bornstein JonathanPresident of Amprius Lab | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −18.2K | $1.96 | −$35.6K | −3.8%454.1K after | |
| Nov 22, 2024 (view filing) | Nov 21 | 1 day | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −8.57K | $1.96 | −$16.8K | −2.0%430.6K after | |
| Nov 22, 2024 (view filing) | Nov 21 | 1 day | Wallach SandraChief Financial Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −17.2K | $1.96 | −$33.6K | −2.4%696.1K after | |
| Nov 22, 2024 (view filing) | Nov 21 | 1 day | Sun KangChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −33.8K | $1.96 | −$66.2K | −2.5%1.32M after | |
| Sep 5, 2024 (view filing) | Sep 3-5 | 2 days | Mirro Justin EDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −710.0K | $0.9056 | −$643.0K | −37.3%1.20M after | 6 lotsThis row combines 6 trades of the same kind from one filing. The price is the value-weighted average. |
| Sep 5, 2024 (view filing) | Sep 3-4 | 2 days | Amprius, Inc.10% Owner | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −19.6K | $0.9661 | −$18.9K | 0.0%65.2M after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Aug 22, 2024 (view filing) | Aug 21 | 1 day | Wallach SandraChief Financial Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −17.6K | $1.04 | −$18.3K | −2.4%713.3K after | |
| Aug 22, 2024 (view filing) | Aug 21 | 1 day | Bornstein JonathanPresident of Amprius Lab | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −18.6K | $1.04 | −$19.4K | −1.2%1.53M after | |
| Aug 22, 2024 (view filing) | Aug 21 | 1 day | Sun KangChief Executive Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −33.3K | $1.04 | −$34.7K | −2.4%1.35M after | |
| Aug 22, 2024 (view filing) | Aug 21 | 1 day | Stefan Constantin IonelChief Technology Officer | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −8.80K | $1.04 | −$9.15K | −2.2%386.2K after | |
| Jun 14, 2024 (view filing) | Jun 12-14 | 2 days | Mirro Justin EDirector | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −800.0K | $1.22 | −$973.0K | −33.5%1.58M after | 6 lotsThis row combines 6 trades of the same kind from one filing. The price is the value-weighted average. |
| May 24, 2024 (view filing) | May 21-22 | 3 daysLateFiled more than 2 business days after the trade (the Form 4 deadline). A few cases, such as trades a broker makes under a 10b5-1 plan, have a longer deadline, so this flag comes from the dates alone and does not mean a rule was broken. | Bornstein JonathanPresident of Amprius Lab | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −19.9K | $1.34 | −$26.7K | −1.3%1.55M after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
