Form 4: Amphastar Pharmaceuticals Executive Sells Shares
Insider Transaction (Form 4)
Rong Zhou, SENIOR EVP, PRODUCTION CENTER of Amphastar Pharmaceuticals, Inc., sold 3,187 shares of common stock on September 2, 2026 for $23.63 per share.
Summary
- Open-market sale: disposed of 3,187 Common Stock at $23.63 ($75,306) on September 2, 2026; holds 169,203 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative signal: an insider sold $75,306 of stock on the open market.
Insider Transactions
Rong Zhou — Officer (SENIOR EVP, PRODUCTION CENTER)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-02 | Open-market sale | Common Stock | 3,187 | $24 | $75.3K | 169,203 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-02 | Open-market sale (3,187 shares) |
Keywords
insider transaction, Form 4, AMPH, Amphastar Pharmaceuticals, Inc., bearish, Rong Zhou
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