Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 09/16/2026 | Verkauf | 23.94 | 10,000 | 239,404 | Form 4 |
| AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 09/16/2026 | Optionsausübung | 13.35 | 10,000 | 133,500 | Form 4 |
| AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 09/02/2026 | Verkauf | 23.63 | 3,187 | 75,306 | Form 4 |
| AMPH | Prins Richard K | Director | 08/11/2026 | Verkauf | 20.30 | 7,973 | 161,852 | Form 4 |
| AMPH | Peters William J | CFO, EVP & TREASURER | 08/07/2026 | Verkauf | 22.48 | 8,180 | 183,886 | Form 4 |
| AMPH | Peters William J | CFO, EVP & TREASURER | 08/07/2026 | Optionsausübung | 19.79 | 5,053 | 99,999 | Form 4 |
| AMPH | Pierce Anthony T | Director | 07/09/2026 | Zuteilung | — | 7,886 | — | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).