Jack Y. Zhang Amphastar Pharmaceuticals, Inc. (AMPH) insider trading activity

Jack Y. Zhang is CEO & CHIEF SCIENTIFIC OFFICER of Amphastar Pharmaceuticals, Inc.. Currently has a direct ownership of 2.51 Million shares of AMPH, which is worth approximately $111 Million. The most recent transaction as insider was on Nov 11, 2024, when has been sold 125,000 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) 2.51M

0.99% 3M change

20.68% 12M change

Total Value Held $111 Million

Jack Y. Zhang Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 11 2024	SELL Bona fide gift	-	125,000 Reduced 4.75%	2,508,554 Common Stock
Sep 13 2024	BUY Exercise of conversion of derivative security	$1,469,000 $14.69 p/Share	100,000 Added 3.66%	2,633,554 Common Stock
Jun 10 2024	BUY Exercise of conversion of derivative security	$1,469,000 $14.69 p/Share	100,000 Added 3.8%	2,533,554 Common Stock
Mar 17 2024	SELL Payment of exercise price or tax liability	$678,812 $43.05 p/Share	15,768 Reduced 0.64%	2,433,554 Common Stock
Mar 15 2024	SELL Payment of exercise price or tax liability	$17,595,439 $43.05 p/Share	408,721 Reduced 14.3%	2,449,322 Common Stock
Mar 15 2024	BUY Exercise of conversion of derivative security	$8,996,693 $12.46 p/Share	722,046 Added 20.17%	2,858,043 Common Stock
Mar 06 2024	SELL Payment of exercise price or tax liability	$325,605 $46.31 p/Share	7,031 Reduced 0.33%	2,135,997 Common Stock
Mar 04 2024	BUY Grant, award, or other acquisition	-	64,310 Added 2.91%	2,143,028 Common Stock
Mar 17 2023	SELL Payment of exercise price or tax liability	$572,220 $36.29 p/Share	15,768 Reduced 0.75%	2,078,718 Common Stock
Mar 16 2023	SELL Payment of exercise price or tax liability	$949,061 $37.6 p/Share	25,241 Reduced 1.19%	2,094,486 Common Stock
Mar 15 2023	SELL Payment of exercise price or tax liability	$310,708 $36.84 p/Share	8,434 Reduced 0.39%	2,177,092 Common Stock
Mar 06 2023	BUY Grant, award, or other acquisition	-	81,383 Added 3.59%	2,185,526 Common Stock
May 20 2022	SELL Open market or private sale	$364,336 $34.21 p/Share	10,650 Reduced 0.5%	2,104,143 Common Stock
May 19 2022	SELL Open market or private sale	$1,419,655 $34.02 p/Share	41,730 Reduced 1.94%	2,114,793 Common Stock
May 18 2022	SELL Open market or private sale	$2,335,883 $34.84 p/Share	67,046 Reduced 3.02%	2,156,523 Common Stock
May 17 2022	SELL Open market or private sale	$1,810,513 $35.94 p/Share	50,376 Reduced 2.22%	2,223,569 Common Stock
May 16 2022	SELL Open market or private sale	$2,450,484 $36.0 p/Share	68,069 Reduced 2.91%	2,273,945 Common Stock
Mar 17 2022	SELL Payment of exercise price or tax liability	$538,950 $34.18 p/Share	15,768 Reduced 0.67%	2,342,014 Common Stock
Mar 16 2022	SELL Payment of exercise price or tax liability	$863,747 $34.22 p/Share	25,241 Reduced 1.06%	2,357,782 Common Stock
Mar 15 2022	SELL Payment of exercise price or tax liability	$512,728 $34.74 p/Share	14,759 Reduced 0.62%	2,383,023 Common Stock
Mar 15 2022	BUY Grant, award, or other acquisition	-	76,914 Added 3.11%	2,397,782 Common Stock
Mar 17 2021	BUY Grant, award, or other acquisition	-	127,209 Added 5.2%	2,320,868 Common Stock
Mar 16 2021	SELL Payment of exercise price or tax liability	$465,444 $18.44 p/Share	25,241 Reduced 1.14%	2,193,659 Common Stock
Mar 15 2021	SELL Payment of exercise price or tax liability	$537,885 $19.15 p/Share	28,088 Reduced 1.25%	2,218,900 Common Stock

JYZ

Jack Y. Zhang

CEO & CHIEF SCIENTIFIC OFFICER

Rancho Cucamonga, CA

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