Form 4: Amphastar Pharmaceuticals Executive Sells Shares
Insider Transaction (Form 4)
William J Peters, CFO, EVP & TREASURER and a Director of Amphastar Pharmaceuticals, Inc., sold 4,139 shares of common stock on September 21, 2026 for $25.00 per share.
Summary
- Open-market sale: disposed of 4,139 Common Stock at $25.00 ($103,475) on September 21, 2026; holds 168,707 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $103,475 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
William J Peters — Director, Officer (CFO, EVP & TREASURER)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-21 | Open-market sale | Common Stock | 4,139 | $25 | $103.5K | 168,707 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-21 | Open-market sale (4,139 shares) |
Keywords
insider transaction, Form 4, AMPH, Amphastar Pharmaceuticals, Inc., bearish, William J Peters
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