Amphastar (AMPH) Senior EVP Rong Zhou Sells 3,187 Shares

What Happened
Rong Zhou, Senior Executive Vice President, Production Center at Amphastar Pharmaceuticals (AMPH), disposed of 3,187 shares on 2026-09-02. The filing reports a weighted-average sale price of $23.63 per share for total proceeds of approximately $75,306. The filing characterizes the transaction as an "open market or private sale."

Key Details

• Transaction date: 2026-09-02; Form 4 filed 2026-09-03 (timely filing).
• Price: weighted average $23.63; shares sold in multiple transactions at prices ranging $23.62–$23.69 (footnote F1).
• Shares sold: 3,187 (Disposition, code S = Sale).
• Shares owned after transaction: not specified in the provided filing summary.
• Notable footnotes:
  • F1: Weighted-average price; breakdown of each execution price available on request.
  • F2: Filing notes 836 shares were acquired May 31, 2026 under the company’s 2014 Employee Stock Purchase Plan.
  • F3/F4: Some holdings are held of record by the Zhou Family Trust (reporting person is trustee) and by the reporting person’s spouse.
• No indication this was a derivative exercise, gift, or tax-withholding transaction.

Context
Insider sales are common and can reflect many reasons (diversification, tax needs, routine liquidity) and do not by themselves indicate management’s view of the company. Purchases generally carry more informational weight for bullish signals. This sale was reported promptly (next-day Form 4 filing) and includes multiple executions at nearby prices as noted in the footnote.