Diane G. Gerst Amphastar Pharmaceuticals, Inc. (AMPH) insider trading activity

Diane G. Gerst is of Amphastar Pharmaceuticals, Inc.. Currently has a direct ownership of 23,756 shares of AMPH, which is worth approximately $506,953. The most recent transaction as insider was on Jun 02, 2025, when has been sold 5,122 shares (Common Stock) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 23.8K

27.49% 3M change

27.49% 12M change

Total Value Held $506,953

Diane G. Gerst Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jun 02 2025	BUY Grant, award, or other acquisition	-	5,122 Added 17.74%	23,756 Common Stock
Jun 03 2024	BUY Grant, award, or other acquisition	-	3,076 Added 14.17%	18,634 Common Stock
Jun 05 2023	BUY Grant, award, or other acquisition	-	2,716 Added 14.86%	15,558 Common Stock
Jul 18 2022	SELL Open market or private sale	$56,590 $37.23 p/Share	1,520 Reduced 10.58%	12,842 Common Stock
Jul 18 2022	BUY Exercise of conversion of derivative security	$30,522 $20.08 p/Share	1,520 Added 9.57%	14,362 Common Stock
Jul 11 2022	SELL Open market or private sale	$55,151 $36.26 p/Share	1,521 Reduced 10.59%	12,842 Common Stock
Jul 11 2022	BUY Exercise of conversion of derivative security	$30,542 $20.08 p/Share	1,521 Added 9.58%	14,363 Common Stock
Jul 05 2022	SELL Open market or private sale	$63,455 $35.0 p/Share	1,813 Reduced 12.37%	12,842 Common Stock
Jul 05 2022	BUY Exercise of conversion of derivative security	$36,405 $20.08 p/Share	1,813 Added 11.01%	14,655 Common Stock
Jun 30 2022	SELL Open market or private sale	$180,110 $35.0 p/Share	5,146 Reduced 28.61%	12,842 Common Stock
Jun 30 2022	BUY Exercise of conversion of derivative security	$103,229 $20.06 p/Share	5,146 Added 22.24%	17,988 Common Stock
Jun 10 2022	BUY Grant, award, or other acquisition	-	4,163 Added 24.48%	12,842 Common Stock
Jun 07 2021	BUY Grant, award, or other acquisition	-	3,009 Added 25.74%	8,679 Common Stock

DGG

Diane G. Gerst

Rancho Cucamonga, CA

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