Rong Zhou Amphastar Pharmaceuticals, Inc. (AMPH) insider trading activity

Rong Zhou is SENIOR EVP, PRODUCTION CENTER of Amphastar Pharmaceuticals, Inc.. Currently has a direct ownership of 118,469 shares of AMPH, which is worth approximately $4.13 Million. The most recent transaction as insider was on May 18, 2023, when has been sold 10,000 shares (Common Stock) at a price of $14.4 per share, resulting in proceeds of $144,000. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 118K

0.07% 3M change

5.38% 12M change

Total Value Held $4.13 Million

Rong Zhou Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
May 18 2023	BUY Exercise of conversion of derivative security	$144,000 $14.4 p/Share	10,000 Added 9.29%	97,598 Common Stock
Mar 17 2023	SELL Payment of exercise price or tax liability	$68,987 $36.29 p/Share	1,901 Reduced 2.12%	87,598 Common Stock
Mar 16 2023	SELL Payment of exercise price or tax liability	$85,840 $37.6 p/Share	2,283 Reduced 2.49%	89,499 Common Stock
Mar 15 2023	SELL Payment of exercise price or tax liability	$75,779 $36.84 p/Share	2,057 Reduced 2.19%	91,782 Common Stock
Mar 06 2023	BUY Grant, award, or other acquisition	-	15,129 Added 13.88%	93,839 Common Stock
Mar 17 2022	SELL Payment of exercise price or tax liability	$83,638 $34.18 p/Share	2,447 Reduced 3.06%	77,583 Common Stock
Mar 16 2022	SELL Payment of exercise price or tax liability	$78,124 $34.22 p/Share	2,283 Reduced 2.77%	80,030 Common Stock
Mar 15 2022	SELL Payment of exercise price or tax liability	$57,390 $34.74 p/Share	1,652 Reduced 1.97%	82,313 Common Stock
Mar 15 2022	BUY Grant, award, or other acquisition	-	13,658 Added 13.99%	83,965 Common Stock
Feb 25 2022	SELL Open market or private sale	$381,087 $28.77 p/Share	13,246 Reduced 15.85%	70,307 Common Stock
Feb 25 2022	BUY Exercise of conversion of derivative security	$76,510 $10.93 p/Share	7,000 Added 7.73%	83,553 Common Stock
Feb 08 2022	SELL Open market or private sale	$187,390 $26.77 p/Share	7,000 Reduced 8.38%	76,553 Common Stock
Feb 08 2022	BUY Exercise of conversion of derivative security	$76,510 $10.93 p/Share	7,000 Added 7.73%	83,553 Common Stock
Jan 10 2022	SELL Open market or private sale	$530,943 $25.37 p/Share	20,928 Reduced 21.47%	76,553 Common Stock
Jan 10 2022	BUY Exercise of conversion of derivative security	$153,020 $10.93 p/Share	14,000 Added 12.56%	97,481 Common Stock
Nov 11 2021	SELL Open market or private sale	$169,308 $21.67 p/Share	7,813 Reduced 8.59%	83,121 Common Stock
Nov 11 2021	BUY Exercise of conversion of derivative security	$81,880 $10.48 p/Share	7,813 Added 7.91%	90,934 Common Stock
Aug 02 2021	SELL Open market or private sale	$193,773 $21.24 p/Share	9,123 Reduced 9.89%	83,121 Common Stock
Aug 02 2021	BUY Exercise of conversion of derivative security	$62,880 $10.48 p/Share	6,000 Added 6.11%	92,244 Common Stock
Jul 26 2021	SELL Open market or private sale	$125,220 $20.87 p/Share	6,000 Reduced 6.5%	86,244 Common Stock
Jul 26 2021	BUY Exercise of conversion of derivative security	$62,880 $10.48 p/Share	6,000 Added 6.11%	92,244 Common Stock
Jul 20 2021	SELL Open market or private sale	$106,697 $20.57 p/Share	5,187 Reduced 5.67%	86,244 Common Stock
Jul 20 2021	BUY Exercise of conversion of derivative security	$54,360 $10.48 p/Share	5,187 Added 5.37%	91,431 Common Stock
Jun 09 2021	SELL Open market or private sale	$92,653 $19.58 p/Share	4,732 Reduced 5.2%	86,244 Common Stock
Jun 08 2021	SELL Open market or private sale	$158,201 $19.34 p/Share	8,180 Reduced 8.25%	90,976 Common Stock

Rong Zhou

SENIOR EVP, PRODUCTION CENTER

Rancho Cucamonga, CA

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