Floyd F. Petersen Amphastar Pharmaceuticals, Inc. (AMPH) insider trading activity

Floyd F. Petersen is of Amphastar Pharmaceuticals, Inc.. Currently has a direct ownership of 75,531 shares of AMPH, which is worth approximately $1.97 Million. The most recent transaction as insider was on Nov 13, 2025, when has been sold 16,679 shares (Common Stock) at a price of $26.49 per share, resulting in proceeds of $441,826. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 75.5K

1.31% 3M change

0.16% 12M change

Total Value Held $1.97 Million

Floyd F. Petersen Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 13 2025	SELL Open market or private sale	$441,826 $26.49 p/Share	16,679 Reduced 18.09%	75,531 Common Stock
Nov 13 2025	BUY Exercise of conversion of derivative security	$278,372 $16.69 p/Share	16,679 Added 15.32%	92,210 Common Stock
Nov 03 2025	SELL Open market or private sale	$12,635 $25.27 p/Share	500 Reduced 0.66%	75,531 Common Stock
Oct 01 2025	SELL Open market or private sale	$13,600 $27.2 p/Share	500 Reduced 0.65%	76,031 Common Stock
Sep 02 2025	SELL Open market or private sale	$15,490 $30.98 p/Share	500 Reduced 0.65%	76,531 Common Stock
Aug 01 2025	SELL Open market or private sale	$10,415 $20.83 p/Share	500 Reduced 0.64%	77,031 Common Stock
Jul 02 2025	SELL Open market or private sale	$11,735 $23.47 p/Share	500 Reduced 0.64%	77,531 Common Stock

Jun 02 2025	SELL Open market or private sale	$12,835 $25.67 p/Share	500 Reduced 0.68%	72,909 Common Stock
Jun 02 2025	BUY Grant, award, or other acquisition	-	5,122 Added 6.16%	78,031 Common Stock
May 01 2025	SELL Open market or private sale	$12,040 $24.08 p/Share	500 Reduced 0.68%	73,409 Common Stock
Apr 01 2025	SELL Open market or private sale	$14,190 $28.38 p/Share	500 Reduced 0.67%	73,909 Common Stock
Mar 06 2025	SELL Open market or private sale	$27,990 $27.99 p/Share	1,000 Reduced 1.33%	74,409 Common Stock
Sep 05 2024	SELL Open market or private sale	$139,410 $46.47 p/Share	3,000 Reduced 3.83%	75,409 Common Stock
Jun 10 2024	SELL Open market or private sale	$124,200 $41.4 p/Share	3,000 Reduced 3.69%	78,409 Common Stock
Jun 03 2024	SELL Open market or private sale	$21,325 $42.65 p/Share	500 Reduced 0.63%	78,333 Common Stock
Jun 03 2024	BUY Grant, award, or other acquisition	-	3,076 Added 3.64%	81,409 Common Stock
May 01 2024	SELL Open market or private sale	$20,835 $41.67 p/Share	500 Reduced 0.63%	78,833 Common Stock
Apr 01 2024	SELL Open market or private sale	$21,715 $43.43 p/Share	500 Reduced 0.63%	79,333 Common Stock
Mar 01 2024	SELL Open market or private sale	$23,030 $46.06 p/Share	500 Reduced 0.62%	79,833 Common Stock
Feb 01 2024	SELL Open market or private sale	$26,680 $53.36 p/Share	500 Reduced 0.62%	80,333 Common Stock
Jan 02 2024	SELL Open market or private sale	$30,565 $61.13 p/Share	500 Reduced 0.61%	80,833 Common Stock
Dec 01 2023	SELL Open market or private sale	$28,850 $57.7 p/Share	500 Reduced 0.61%	81,333 Common Stock
Nov 01 2023	SELL Open market or private sale	$22,650 $45.3 p/Share	500 Reduced 0.61%	81,833 Common Stock
Oct 02 2023	SELL Open market or private sale	$22,890 $45.78 p/Share	500 Reduced 0.6%	82,333 Common Stock
Jun 05 2023	BUY Grant, award, or other acquisition	-	2,716 Added 3.17%	82,833 Common Stock

FFP

Floyd F. Petersen

Rancho Cucamonga, CA

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