Insider Trading for AMPH
View recent insider trading activity including purchases, sales, and awards. Insider trading can provide insights into how executives view their company's prospects.
Insider Trading Summary
Shares Acquired
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Shares Disposed
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Net Position
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Recent Activity (30 Days)
Acquisitions: 24.5K shares
Dispositions: 0 shares
Net: 24.5K shares
Insiders have been net buyers recently, potentially signaling confidence in the company's short-term prospects.
Quarterly Activity (3 Months)
Acquisitions: 177.6K shares
Dispositions: 769 shares
Net: 176.8K shares
Insiders have been net buyers over the quarter, suggesting potential confidence in medium-term business fundamentals.
Key Insider Activity: Aug 19, 2024 to Jul 9, 2026
PETERS WILLIAM J
ExecutiveChief Financial Officer
+165.4K shares
9 transactions
Zhang Jack Y.
ExecutiveChief Executive Officer
+588.1K shares
23 transactions
Liawatidewi Yakob
ExecutiveVice President
+100.8K shares
8 transactions
Zhou Rong
ExecutiveVice President
+101.9K shares
11 transactions
ZASLOFF MICHAEL A
DirectorDirector
+42.0K shares
4 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Jul 9, 2026 | Pierce Anthony T | DDirector | Award/Grant | 16.6K | $19.02 | $316,606.92 | 16.6K | View |
| Jul 9, 2026 | Pierce Anthony T | DDirector | Award/Grant | 7.9K | $0.00 | $0.00 | 7.9K | View |
| Jul 9, 2026 | Pierce Anthony T | Unknown | Unknown | 0 | $0.00 | $0.00 | 0 | View |
Jun 2, 2026 | Locked | — | — | — | — | — | — | — |
Jun 1, 2026 | Locked | — | — | — | — | — | — | — |
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Jun 1, 2026 | Locked | — | — | — | — | — | — | — |
Jun 1, 2026 | Locked | — | — | — | — | — | — | — |
Mar 15, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 15, 2026 | Locked | — | — | — | — | — | — | — |
Mar 10, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 10, 2026 | Locked | — | — | — | — | — | — | — |
Mar 9, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 6, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 4, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 4, 2026 | Locked | — | — | — | — | — | — | — |
Mar 4, 2026 | Locked | — | — | — | — | — | — | — |
Dec 17, 2025 | Locked | — | — | — | — | — | — | — |
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Dec 17, 2025 | Locked | — | — | — | — | — | — | — |
Dec 12, 2025 | Locked | — | — | — | — | — | — | — |
Dec 11, 2025 | Locked | — | — | — | — | — | — | — |
Nov 25, 2025 | Locked | — | — | — | — | — | — | — |
Nov 25, 2025 | Locked | — | — | — | — | — | — | — |
Nov 25, 2025 | Locked | — | — | — | — | — | — | — |
Nov 13, 2025 | Locked | — | — | — | — | — | — | — |
Nov 13, 2025 | Locked | — | — | — | — | — | — | — |
Nov 13, 2025 | Locked | — | — | — | — | — | — | — |
Nov 3, 2025 | Locked | — | — | — | — | — | — | — |
Oct 1, 2025 | Locked | — | — | — | — | — | — | — |
Sep 2, 2025 | Locked | — | — | — | — | — | — | — |
Aug 1, 2025 | Locked | — | — | — | — | — | — | — |
Jul 18, 2025 | Locked | — | — | — | — | — | — | — |
Jul 18, 2025 | Locked | — | — | — | — | — | — | — |
Jul 18, 2025 | Locked | — | — | — | — | — | — | — |
Jul 2, 2025 | Locked | — | — | — | — | — | — | — |
Jun 13, 2025 | Locked | — | — | — | — | — | — | — |
Jun 13, 2025 | Locked | — | — | — | — | — | — | — |
Jun 3, 2025 | Locked | — | — | — | — | — | — | — |
Jun 2, 2025 | Locked | — | — | — | — | — | — | — |
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Jun 2, 2025 | Locked | — | — | — | — | — | — | — |
Jun 2, 2025 | Locked | — | — | — | — | — | — | — |
May 19, 2025 | Locked | — | — | — | — | — | — | — |
May 1, 2025 | Locked | — | — | — | — | — | — | — |
Apr 1, 2025 | Locked | — | — | — | — | — | — | — |
Mar 17, 2025 | Locked | — | — | — | — | — | — | — |
Mar 17, 2025 | Locked | — | — | — | — | — | — | — |
Mar 17, 2025 | Locked | — | — | — | — | — | — | — |
Mar 17, 2025 | Locked | — | — | — | — | — | — | — |
Mar 17, 2025 | Locked | — | — | — | — | — | — | — |
Mar 15, 2025 | Locked | — | — | — | — | — | — | — |
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Mar 15, 2025 | Locked | — | — | — | — | — | — | — |
Mar 14, 2025 | Locked | — | — | — | — | — | — | — |
Mar 14, 2025 | Locked | — | — | — | — | — | — | — |
Mar 14, 2025 | Locked | — | — | — | — | — | — | — |
Mar 14, 2025 | Locked | — | — | — | — | — | — | — |
Mar 14, 2025 | Locked | — | — | — | — | — | — | — |
Aug 19, 2024 | Locked | — | — | — | — | — | — | — |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net buyers of AMPH stock, which is typically a strong positive signal.