Richard K. Prins

Companies

• Amphastar Pharmaceuticals, Inc.Board member Jun 24, 2014 to now¹
• IGC Pharma, Inc.Board member May 18, 2009 to now²

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. AMPH29,625 shares³$770.2K at $26.00Aug 11, 2026
• IPIGC Pharma, Inc. IGC1,541,251 shares⁴$387.2K at $0.25Apr 1, 2026

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

Recent filings

• Aug 11, 2026Sold 7,973 shares at $20.30 of Amphastar Pharmaceuticals, Inc.³
• Jun 1, 2026Granted 8,143 shares of Amphastar Pharmaceuticals, Inc.⁵
• Apr 1, 2026Exercised options 70,000 shares of IGC Pharma, Inc.⁴
• Apr 1, 2026Exercised options 100,000 shares of IGC Pharma, Inc.⁴
• Jan 19, 2026Exercised options 100,000 shares of IGC Pharma, Inc.⁶
• Nov 25, 2025Sold 4,179 shares at $27.10 of Amphastar Pharmaceuticals, Inc.⁷
• Nov 25, 2025Exercised options 4,179 shares at $16.69 of Amphastar Pharmaceuticals, Inc.⁷
• Jun 2, 2025Granted 5,122 shares of Amphastar Pharmaceuticals, Inc.⁸
• Mar 31, 2025Exercised options 70,000 shares of IGC Pharma, Inc.⁹
• Mar 31, 2025Exercised options 100,000 shares of IGC Pharma, Inc.⁹
• Mar 31, 2025Exercised options 58,333 shares of IGC Pharma, Inc.⁹
• Dec 9, 2024Gift 410 shares of Amphastar Pharmaceuticals, Inc.¹⁰
• Dec 9, 2024Sold 10,000 shares at $43.77 of Amphastar Pharmaceuticals, Inc.¹⁰
• Dec 9, 2024Exercised options 10,000 shares at $19.52 of Amphastar Pharmaceuticals, Inc.¹⁰
• Nov 12, 2024Gift 1,000 shares of Amphastar Pharmaceuticals, Inc.¹¹
• Nov 12, 2024Sold 5,000 shares at $48.80 of Amphastar Pharmaceuticals, Inc.¹¹
• Nov 12, 2024Exercised options 2,500 shares at $16.69 of Amphastar Pharmaceuticals, Inc.¹¹
• Aug 19, 2024Gift 1,500 shares of Amphastar Pharmaceuticals, Inc.⁵
• Aug 12, 2024Sold 17,101 shares at $43.07 of Amphastar Pharmaceuticals, Inc.¹²
• Aug 12, 2024Exercised options 7,182 shares at $19.52 of Amphastar Pharmaceuticals, Inc.¹²
• Aug 12, 2024Exercised options 6,004 shares at $20.08 of Amphastar Pharmaceuticals, Inc.¹²
• Aug 12, 2024Exercised options 3,915 shares at $20.03 of Amphastar Pharmaceuticals, Inc.¹²
• Aug 12, 2024Gift 200,000 shares of IGC Pharma, Inc.¹³
• Jun 3, 2024Granted 3,076 shares of Amphastar Pharmaceuticals, Inc.¹⁴
• Mar 13, 2024Exercised options 28,500 shares of IGC Pharma, Inc.¹⁵