| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMPH | Common Stock | Tax liability | $158,898 | -5,753 | -0.23% | $27.62 | 2,502,801 | 04 Mar 2025 | Direct | F1 |
| transaction | AMPH | Common Stock | Tax liability | $67,006 | -2,426 | -0.22% | $27.62 | 1,102,330 | 04 Mar 2025 | See footnote | F1, F2 |
| holding | AMPH | Common Stock | 6,827,679 | 04 Mar 2025 | See footnote | F3 |
| Id | Content |
|---|---|
| F1 | The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs. |
| F2 | The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife. |
| F3 | The shares are held of record by Applied Physics and Chemistry Laboratories, Inc., of which the reporting persons and The Bill Luobei Zhang 2004 Irrevocable Trust are the sole owners. |