Floyd F. Petersen

Companies

• Amphastar Pharmaceuticals, Inc.Board member Jun 24, 2014 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• APAmphastar Pharmaceuticals, Inc. AMPH71,368 shares²$1.9M at $26.00Dec 12, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

• Dec 12, 2025Sold 2,426 shares at $25.92 of Amphastar Pharmaceuticals, Inc.²
• Dec 11, 2025Sold 1,737 shares at $25.69 of Amphastar Pharmaceuticals, Inc.²
• Nov 13, 2025Sold 16,679 shares at $26.49 of Amphastar Pharmaceuticals, Inc.³
• Nov 13, 2025Exercised options 16,679 shares at $16.69 of Amphastar Pharmaceuticals, Inc.³
• Nov 3, 2025Sold 500 shares at $25.27 of Amphastar Pharmaceuticals, Inc.⁴
• Oct 1, 2025Sold 500 shares at $27.20 of Amphastar Pharmaceuticals, Inc.⁵
• Sep 2, 2025Sold 500 shares at $30.98 of Amphastar Pharmaceuticals, Inc.⁶
• Aug 1, 2025Sold 500 shares at $20.83 of Amphastar Pharmaceuticals, Inc.⁷
• Jul 2, 2025Sold 500 shares at $23.47 of Amphastar Pharmaceuticals, Inc.⁸
• Jun 2, 2025Granted 5,122 shares of Amphastar Pharmaceuticals, Inc.⁹
• Jun 2, 2025Sold 500 shares at $25.67 of Amphastar Pharmaceuticals, Inc.⁹
• May 1, 2025Sold 500 shares at $24.08 of Amphastar Pharmaceuticals, Inc.¹⁰
• Apr 1, 2025Sold 500 shares at $28.38 of Amphastar Pharmaceuticals, Inc.¹¹
• Mar 6, 2025Sold 1,000 shares at $27.99 of Amphastar Pharmaceuticals, Inc.¹²
• Sep 5, 2024Sold 3,000 shares at $46.47 of Amphastar Pharmaceuticals, Inc.¹³
• Jun 10, 2024Sold 3,000 shares at $41.40 of Amphastar Pharmaceuticals, Inc.¹⁴
• Jun 3, 2024Granted 3,076 shares of Amphastar Pharmaceuticals, Inc.¹⁵
• Jun 3, 2024Sold 500 shares at $42.65 of Amphastar Pharmaceuticals, Inc.¹⁵
• May 1, 2024Sold 500 shares at $41.67 of Amphastar Pharmaceuticals, Inc.¹⁶
• Apr 1, 2024Sold 500 shares at $43.43 of Amphastar Pharmaceuticals, Inc.¹⁷
• Mar 1, 2024Sold 49 shares at $46.53 of Amphastar Pharmaceuticals, Inc.¹⁸
• Mar 1, 2024Sold 451 shares at $45.60 of Amphastar Pharmaceuticals, Inc.¹⁸
• Feb 1, 2024Sold 26 shares at $53.64 of Amphastar Pharmaceuticals, Inc.¹⁹
• Feb 1, 2024Sold 474 shares at $53.07 of Amphastar Pharmaceuticals, Inc.¹⁹
• Jan 2, 2024Sold 353 shares at $61.70 of Amphastar Pharmaceuticals, Inc.²⁰