Diane G. Gerst

Corp. Sr. VP of Quality Assur., Amphastar Pharmaceuticals, Inc.

Companies

Amphastar Pharmaceuticals, Inc.Board member Jun 13, 2019 to now¹
Amphastar Pharmaceuticals, Inc.Corp. Sr. VP of Quality Assur. Jun 24, 2014 to Dec 19, 2017²

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

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

Jun 1, 2026Granted 8,143 shares of Amphastar Pharmaceuticals, Inc.³
Jun 2, 2025Granted 5,122 shares of Amphastar Pharmaceuticals, Inc.⁴
Jun 3, 2024Granted 3,076 shares of Amphastar Pharmaceuticals, Inc.⁵
Jun 5, 2023Granted 2,716 shares of Amphastar Pharmaceuticals, Inc.⁶
Jul 18, 2022Sold 1,520 shares at $37.23 of Amphastar Pharmaceuticals, Inc.⁷
Jul 18, 2022Exercised options 1,520 shares at $20.08 of Amphastar Pharmaceuticals, Inc.⁷
Jul 11, 2022Sold 1,521 shares at $36.26 of Amphastar Pharmaceuticals, Inc.⁸
Jul 11, 2022Exercised options 1,521 shares at $20.08 of Amphastar Pharmaceuticals, Inc.⁸
Jul 5, 2022Sold 1,813 shares at $35.00 of Amphastar Pharmaceuticals, Inc.⁹
Jul 5, 2022Exercised options 1,813 shares at $20.08 of Amphastar Pharmaceuticals, Inc.⁹
Jun 30, 2022Sold 5,146 shares at $35.00 of Amphastar Pharmaceuticals, Inc.¹⁰
Jun 30, 2022Exercised options 1,813 shares at $20.08 of Amphastar Pharmaceuticals, Inc.¹⁰
Jun 30, 2022Exercised options 3,333 shares at $20.03 of Amphastar Pharmaceuticals, Inc.¹⁰
Jun 10, 2022Granted 4,163 shares of Amphastar Pharmaceuticals, Inc.¹¹

The numbers on this page point here. Each one links to the record it came from.