Amphastar Pharmaceuticals, Inc.

Ownership Transactions Reported by 13 Insiders

Symbol
AMPH on Nasdaq
Location
11570 Sixth Street, Rancho Cucamonga, CA

Insiders trading volume in the past year

Amphastar Pharmaceuticals, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner $188M Nov 11, 2024
Mary Z. Luo COO,Chief Scientist & Chairman, Director, 10%+ Owner $63.2M -$20M -24% Jan 10, 2024
Richard Koo Director $15.4M Jun 7, 2021
Rong Zhou Senior Evp, Production Center $10.7M -$1.35M -11.1% Dec 12, 2024
Howard Lee Director $6.21M Jun 3, 2024
William J. Peters CFO, EVP & TREASURER, Director $4.9M -$1.83M -27.2% Nov 6, 2024
Yakob Liawatidewi EVP CORP ADMIN CENTER, Director $4.03M -$271K -6.31% Nov 6, 2024
Floyd Petersen Director $3.5M -$408K -10.4% Sep 5, 2024
Richard K. Prins Director $1.32M -$1.42M -51.9% Dec 9, 2024
David Maris Director $1.09M Jun 7, 2021
Michael A. Zasloff Director $1.06M -$590K -35.7% Jun 3, 2024
Diane G. Gerst Director $787K Jun 3, 2024
Gayle Deflin Director $245K Jun 3, 2024

Recent Insider Transactions by Companies or Individuals for Amphastar Pharmaceuticals, Inc.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.