AMPH Insider Trading Activity and SEC Form 4 Filings
Trump's trades in AMPH
From his financial disclosures
$15K+
1 purchase
$16K+
2 sales
Sale
May 15, 2026
Reported 47d later
$15K - $50K
Purchase
Mar 4, 2026
Reported 71d later
$15K - $50K
Sale
Jan 26, 2026
Reported 108d later
$1K - $15K
Many orders in these accounts are placed by the account manager.
AMPH insider trading summary
Over the past 12 months, insiders at Amphastar Pharmaceuticals, Inc. (AMPH) reported 9 sales worth $1.6M by 4 insiders and no open-market purchases on SEC Form 4. Net insider selling was $1.6M.
Latest AMPH insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Sep 21, 2026 | William J Peters | CFO, EVP & Treasurer | Sell | $103K (4,139 @ $25.00) |
| Sep 16, 2026 | Rong Zhou | Senior EVP, Production Center | Sell | $239K (10,000 @ $23.94) |
| Aug 11, 2026 | Richard K Prins | Insider | Sell | $162K (7,973 @ $20.30) |
| Aug 7, 2026 | William J Peters | CFO, EVP & Treasurer | Sell | $184K (8,180 @ $22.48) |
| Dec 17, 2025 | Rong Zhou | Senior EVP, Production Center | Sell | $256K (9,787 @ $26.20) |
| Dec 12, 2025 | Floyd F. Petersen | Insider | Sell | $63K (2,426 @ $25.92) |
| Dec 11, 2025 | Floyd F. Petersen | Insider | Sell | $45K (1,737 @ $25.69) |
| Nov 25, 2025 | Richard K Prins | Insider | Sell | $113K (4,179 @ $27.10) |
| Nov 13, 2025 | Floyd F. Petersen | Insider | Sell | $442K (16,679 @ $26.49) |
| Nov 3, 2025 | Floyd F. Petersen | Insider | Sell | $13K (500 @ $25.27) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.