3 Form 4 filings for AMPH between 2026-07-13 and 2026-08-12, from 3 filers. 2 discretionary (2 sales, 0 purchases), 1 routine grant or withholding filing. 1 of 3 state a filing-level total, summing to $183,886; the rest report only their largest transaction, so the true figure is higher. Prices ran $20 to $22.
| Filed | Filer | Role | Action | Shares largest txn | Price | Filing total | Txns |
|---|---|---|---|---|---|---|---|
| 2026-08-12 | PRINS RICHARD K | sold | 7,973 | $20.30 | — | — | |
| 2026-08-11 | PETERS WILLIAM J | CFO, EVP & TREASURER | sold | 8,180 | $22.48 | $183,886 | 2 |
| 2026-07-13 | Pierce Anthony T | received | 7,886 | — | — | — | |
| 3 filings · 3 filers · disclosed totals only | $183,886 (1/3) | — | |||||