Richard K Prins Amphastar Pharmaceuticals, Inc. (AMPH) insider trading activity

Richard K Prins is of Amphastar Pharmaceuticals, Inc.. Currently has a direct ownership of 35,183 shares of AMPH, which is worth approximately $916,868. The most recent transaction as insider was on Nov 25, 2025, when has been sold 4,179 shares (Common Stock) at a price of $27.1 per share, resulting in proceeds of $113,250. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 35.2K

0% 3M change

17.04% 12M change

Total Value Held $916,868

RICHARD K PRINS Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 25 2025	SELL Open market or private sale	$113,250 $27.1 p/Share	4,179 Reduced 10.62%	35,183 Common Stock
Nov 25 2025	BUY Exercise of conversion of derivative security	$69,747 $16.69 p/Share	4,179 Added 9.6%	39,362 Common Stock
Jun 02 2025	BUY Grant, award, or other acquisition	-	5,122 Added 12.71%	35,183 Common Stock
Dec 09 2024	SELL Open market or private sale	$437,700 $43.77 p/Share	10,000 Reduced 24.71%	30,471 Common Stock
Dec 09 2024	SELL Bona fide gift	-	410 Reduced 1.35%	30,061 Common Stock
Dec 09 2024	BUY Exercise of conversion of derivative security	$195,200 $19.52 p/Share	10,000 Added 19.81%	40,471 Common Stock
Nov 12 2024	SELL Bona fide gift	-	1,000 Reduced 3.18%	30,471 Common Stock

Nov 12 2024	SELL Open market or private sale	$244,000 $48.8 p/Share	5,000 Reduced 13.71%	31,471 Common Stock
Nov 12 2024	BUY Exercise of conversion of derivative security	$41,725 $16.69 p/Share	2,500 Added 6.42%	36,471 Common Stock
Aug 12 2024	SELL Open market or private sale	$736,540 $43.07 p/Share	17,101 Reduced 33.48%	33,971 Common Stock
Aug 12 2024	BUY Exercise of conversion of derivative security	$339,967 $19.88 p/Share	17,101 Added 25.08%	51,072 Common Stock
Jun 03 2024	BUY Grant, award, or other acquisition	-	3,076 Added 8.3%	33,971 Common Stock
Nov 17 2023	SELL Bona fide gift	-	1,000 Reduced 3.14%	30,895 Common Stock
Nov 17 2023	SELL Open market or private sale	$223,440 $55.86 p/Share	4,000 Reduced 11.14%	31,895 Common Stock
Nov 13 2023	SELL Open market or private sale	$262,500 $52.5 p/Share	5,000 Reduced 12.23%	35,895 Common Stock
Aug 18 2023	SELL Open market or private sale	$105,000 $52.5 p/Share	2,000 Reduced 4.66%	40,895 Common Stock
Aug 15 2023	SELL Open market or private sale	$238,914 $57.39 p/Share	4,163 Reduced 8.85%	42,895 Common Stock
Jun 05 2023	BUY Grant, award, or other acquisition	-	2,716 Added 5.46%	47,058 Common Stock
May 15 2023	SELL Open market or private sale	$217,500 $43.5 p/Share	5,000 Reduced 10.13%	44,342 Common Stock
May 15 2023	BUY Exercise of conversion of derivative security	$83,450 $16.69 p/Share	5,000 Added 9.2%	49,342 Common Stock
May 12 2023	SELL Open market or private sale	$210,300 $42.06 p/Share	5,000 Reduced 9.55%	47,342 Common Stock
May 12 2023	SELL Bona fide gift	-	3,000 Reduced 6.34%	44,342 Common Stock
May 12 2023	BUY Exercise of conversion of derivative security	$83,450 $16.69 p/Share	5,000 Added 8.72%	52,342 Common Stock
Jun 10 2022	BUY Grant, award, or other acquisition	-	4,163 Added 8.08%	47,342 Common Stock
May 17 2022	SELL Bona fide gift	-	2,000 Reduced 4.43%	43,179 Common Stock

Also insider at

IGC

India Globalization Capital, Inc. Industrials

Director

RKP

Richard K Prins

Rancho Cucamonga,, CA

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