Hamm Christopher W.
Insider transactions at 1 company
This page shows all SEC Form 4 filings attributed to Hamm Christopher W.. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.
| Company | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| AMPY | Option Exercise | 27,531 | — | — | Jul 1, 2025 | |
| AMPY | Purchase | 77,176 | $3.67 | $283,236 | Jun 18, 2025 | |
| AMPY | Option Exercise | 26,708 | — | — | Jul 1, 2024 | |
| AMPY | Option Exercise | 25,045 | — | — | Jul 1, 2023 | |
| AMPY | Purchase | 20,000 | $7.14 | $142,800 | Mar 15, 2023 | |
| AMPY | Purchase | 8,000 | $7.50 | $60,000 | Dec 22, 2022 | |
| AMPY | Option Exercise | 42,461 | — | — | Jul 1, 2022 | |
| AMPY | Option Exercise | 3,333 | — | — | May 3, 2022 | |
| AMPY | Award / Grant | 42,461 | — | — | Jul 1, 2021 | |
| AMPY | Option Exercise | 3,332 | — | — | May 4, 2021 | |
| AMPY | Option Exercise | 2,232 | — | — | May 3, 2020 | |
| AMPY | Sale | 1,304 | $6.83 | $8,906 | Dec 17, 2019 | |
| AMPY | Sale | 4,316 | $6.61 | $28,529 | Sep 23, 2019 | |
| AMPY | Award / Grant | 5,620 | — | — | Aug 6, 2019 |