| Type | Value |
|---|---|
| cik | 0001297184 |
| ticker | AMPH |
Discretionary BUY minus SELL in USD over rolling windows. Excludes compensation flow.
| Date | Type | Insider | Qty | Price | Signals |
|---|---|---|---|---|---|
| 15 Mar 2026 | TAX_WITHHOLDING | Zhou Rong | 1,225 | 18.18 USD | |
| 15 Mar 2026 | TAX_WITHHOLDING | Liawatidewi Yakob | 1,033 | 18.18 USD | |
| 15 Mar 2026 | TAX_WITHHOLDING | PETERS WILLIAM J | 1,973 | 18.18 USD | |
| 15 Mar 2026 | TAX_WITHHOLDING | Zhang Jack Y. | 9,784 | 18.18 USD | |
| 15 Mar 2026 | TAX_WITHHOLDING | Zhang Jack Y. | 2,908 | 18.18 USD | indirect |
| 10 Mar 2026 | TAX_WITHHOLDING | PETERS WILLIAM J | 3,297 | 18.91 USD | |
| 09 Mar 2026 | GRANT_AWARD | PETERS WILLIAM J | 58,693 | 0.00 USD | |
| 09 Mar 2026 | GRANT_AWARD | PETERS WILLIAM J | 121,071 | 0.00 USD | deriv |
| 10 Mar 2026 | TAX_WITHHOLDING | Liawatidewi Yakob | 1,870 | 18.91 USD | |
| 09 Mar 2026 | GRANT_AWARD | Liawatidewi Yakob | 35,450 | 0.00 USD | |
| 09 Mar 2026 | GRANT_AWARD | Liawatidewi Yakob | 73,126 | 0.00 USD | deriv |
| 09 Mar 2026 | GRANT_AWARD | Zhou Rong | 39,432 | 0.00 USD | |
| 10 Mar 2026 | TAX_WITHHOLDING | Zhou Rong | 2,215 | 18.91 USD | |
| 09 Mar 2026 | GRANT_AWARD | Zhou Rong | 81,341 | 0.00 USD | deriv |
| 09 Mar 2026 | GRANT_AWARD | Zhang Jack Y. | 180,504 | 0.00 USD | |
| 10 Mar 2026 | TAX_WITHHOLDING | Zhang Jack Y. | 4,395 | 18.91 USD | indirect |
| 09 Mar 2026 | GRANT_AWARD | Zhang Jack Y. | 72,462 | 0.00 USD | indirect |
| 10 Mar 2026 | TAX_WITHHOLDING | Zhang Jack Y. | 14,785 | 18.91 USD | |
| 09 Mar 2026 | GRANT_AWARD | Zhang Jack Y. | 372,338 | 0.00 USD | deriv |
| 09 Mar 2026 | GRANT_AWARD | Zhang Jack Y. | 149,472 | 0.00 USD | derivindirect |
| 06 Mar 2026 | TAX_WITHHOLDING | Luo Mary Z. | 3,077 | 19.34 USD | indirect |
| 06 Mar 2026 | TAX_WITHHOLDING | Luo Mary Z. | 7,773 | 19.34 USD | |
| 06 Mar 2026 | TAX_WITHHOLDING | PETERS WILLIAM J | 2,146 | 19.34 USD | |
| 06 Mar 2026 | TAX_WITHHOLDING | Liawatidewi Yakob | 1,144 | 19.34 USD | |
| 06 Mar 2026 | TAX_WITHHOLDING | Zhou Rong | 1,357 | 19.34 USD |