Director HSIEH Wen Hsuan sold Amprius Technologies ($AMPX) shares on the open market twice in the last year, for a total of $7.6 million. The most recent sale was on March 12, 2026. These transactions rank 1400th among 11,678 insiders by sale value, compared to an average of $8.6 million over 6.4 trades. No open market purchases occurred.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 12, 2026 | Amprius Technologies, Inc. | $AMPX | HSIEH Wen Hsuan | Director | M | Stock Option (right to buy) | 270251 | $2.61 | 0.0000 | 130,483,838 | 100.00% | 0.21% |
| March 12, 2026 | Amprius Technologies, Inc. | $AMPX | HSIEH Wen Hsuan | Director | M | Common stock | 270251 | $2.61 | 457,590.0000 | 130,483,838 | 144.26% | 0.21% |
| March 12, 2026 | Amprius Technologies, Inc. | $AMPX | HSIEH Wen Hsuan | Director | S | Common stock | 130646 | $18.22 | 44,444.0000 | 130,483,838 | 74.62% | 0.10% |
| March 12, 2026 | Amprius Technologies, Inc. | $AMPX | HSIEH Wen Hsuan | Director | S | Common stock | 282500 | $18.55 | 175,090.0000 | 130,483,838 | 61.74% | 0.22% |
| Feb. 18, 2026 | Ambiq Micro, Inc. | $AMBQ | HSIEH Wen Hsuan | Not found | M | Warrant (Right to Buy) | 238931 | $0.00 | 0.0000 | 18,313,186 | 100.00% | 1.30% |
| Feb. 18, 2026 | Ambiq Micro, Inc. | $AMBQ | HSIEH Wen Hsuan | Not found | M | Common Stock | 238931 | $12.60 | 633,920.0000 | 18,313,186 | 60.49% | 1.30% |
| July 31, 2025 | Ambiq Micro, Inc. | $AMBQ | HSIEH Wen Hsuan | Not found | C | Common Stock | 394989 | $0.00 | 394,989.0000 | 0 | 9999.99% | 0.00% |
| July 31, 2025 | Ambiq Micro, Inc. | $AMBQ | HSIEH Wen Hsuan | Not found | C | Series G Convertible Preferred Stock | 394989 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| June 13, 2025 | Amprius Technologies, Inc. | $AMPX | HSIEH Wen Hsuan | Director | A | Common stock | 44444 | $0.00 | 4,136,584.0000 | 117,926,808 | 1.09% | 0.04% |
| June 7, 2024 | Amprius Technologies, Inc. | $AMPX | HSIEH Wen Hsuan | Director | A | Common stock | 125000 | $0.00 | 242,895.0000 | 0 | 106.03% | 0.00% |