Amphastar Pharmaceuticals CFO William J. Peters reports sale of $814,669.1103 in common shares
AMPH•Amphastar Pharmaceuticals CFO William J. Peters sold 28,631 common shares for about $814,669 across November 4 and 5, 2026. He directly owned 167,076 shares after the transactions.
1. Share transactions
Peters sold 16,000 shares at $28.03 on November 4 after exercising 16,000 employee stock options at $13.03. On November 5, he exercised 11,000 options at $17.99 and sold 12,631 shares at $28.9913.
2. Ownership after sales
Peters directly owned 167,076 common shares following the transactions, according to a Form 4 signed November 6, 2026.




