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 |
|---|---|---|---|---|---|---|---|---|
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/25/2026 | Zuteilung | — | 346 | — | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/25/2026 | Schenkung | — | 346 | — | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/25/2026 | Schenkung | — | 5,000 | — | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/24/2026 | Verkauf | 10.03 | 8,000 | 80,240 | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/21/2026 | Verkauf | 10.34 | 23,529 | 243,313 | Form 4 |
| AMPX | Stefan Constantin Ionel | Chief Technology Officer | 08/21/2026 | Verkauf | 10.34 | 29,681 | 306,931 | Form 4 |
| AMPX | Sun Kang | Director | 08/21/2026 | Verkauf | 10.34 | 62,101 | 642,186 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).