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AMPH Insider Trading

Insider Trading Chart
Insider Trading History
Frequently Asked Questions
About

Insider Ownership Percentage: 27.80%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $6,247,272.86

Amphastar Pharmaceuticals Insider Trading History Chart

Amphastar Pharmaceuticals Share Price & Price History

^$37.59

▼ -0.08 (-0.21%)

As of 03/31/2023 11:38 AM ET

Days: 30 | 90 | 365

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Amphastar Pharmaceuticals Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
3/15/2023	William J. Peters	CFO	Sell	12,776	$36.43	$465,429.68	118,451
3/1/2023	Floyd F. Petersen	Director	Sell	500	$36.70	$18,350.00	85,608
2/1/2023	Floyd F. Petersen	Director	Sell	500	$30.35	$15,175.00	86,108
12/1/2022	Floyd F. Petersen	Director	Sell	500	$30.13	$15,065.00	87,108
10/3/2022	Floyd F. Petersen	Director	Sell	500	$28.59	$14,295.00	88,108
8/9/2022	William J. Peters	CFO	Sell	10,000	$38.35	$383,500.00	100,480
8/9/2022	Yakob Liawatidewi	EVP	Sell	3,055	$39.00	$119,145.00	61,607
8/1/2022	Floyd F. Petersen	Director	Sell	500	$37.48	$18,740.00	89,108
7/18/2022	Diane G Gerst	Director	Sell	1,520	$37.23	$56,589.60	12,842
7/15/2022	Yakob Liawatidewi	EVP	Sell	10,837	$36.64	$397,067.68	61,607
7/11/2022	Diane G Gerst	Director	Sell	1,521	$36.26	$55,151.46	12,842
7/5/2022	Diane G Gerst	Director	Sell	1,813	$35.00	$63,455.00	12,842
7/1/2022	Floyd F. Petersen	Director	Sell	500	$34.78	$17,390.00	89,608
6/30/2022	William J. Peters	CFO	Sell	18,386	$34.95	$642,590.70	100,480
6/17/2022	William J. Peters	CFO	Sell	5,512	$32.05	$176,659.60	100,480
6/6/2022	Howard Lee	Director	Sell	10,291	$37.79	$388,896.89	138,776
6/1/2022	Floyd F. Petersen	Director	Sell	500	$37.00	$18,500.00	85,945
5/23/2022	Howard Lee	Director	Sell	10,000	$34.93	$349,300.00	138,776
5/18/2022	Floyd F. Petersen	Director	Sell	9,924	$35.05	$347,836.20	86,445
5/18/2022	Jack Y Zhang	CEO	Sell	67,046	$34.14	$2,288,950.44	2,156,523
5/16/2022	Michael A. Zasloff	Director	Sell	10,291	$35.61	$366,462.51	47,206
5/2/2022	Floyd F. Petersen	Director	Sell	295	$35.18	$10,378.10	76,078
4/1/2022	Floyd F. Petersen	Director	Sell	500	$36.69	$18,345.00	76,373
3/16/2022	Michael A. Zasloff	Director	Sell	10,000	$33.71	$337,100.00
3/15/2022	William J. Peters	CFO	Sell	7,900	$34.46	$272,234.00
3/1/2022	Floyd F. Petersen	Director	Sell	500	$27.27	$13,635.00
2/8/2022	Rong Zhou	EVP	Sell	7,000	$26.77	$187,390.00
2/8/2022	William J. Peters	CFO	Sell	10,000	$26.95	$269,500.00
2/1/2022	Floyd F. Petersen	Director	Sell	500	$24.08	$12,040.00
1/10/2022	Rong Zhou	EVP	Sell	20,928	$25.36	$530,734.08
1/10/2022	William J. Peters	CFO	Sell	16,000	$25.40	$406,400.00
1/7/2022	William J. Peters	CFO	Sell	31,776	$24.43	$776,287.68
1/3/2022	Floyd F. Petersen	Director	Sell	500	$23.22	$11,610.00
12/22/2021	Floyd F. Petersen	Director	Sell	1,000	$22.50	$22,500.00
12/21/2021	William J. Peters	CFO	Sell	8,256	$22.40	$184,934.40
12/16/2021	William J. Peters	CFO	Sell	1,744	$22.40	$39,065.60
12/10/2021	Richard K. Prins	Director	Sell	5,291	$21.36	$113,015.76
11/22/2021	Richard K. Prins	Director	Sell	5,000	$21.22	$106,100.00
11/11/2021	Rong Zhou	EVP	Sell	7,813	$21.67	$169,307.71
11/11/2021	William J. Peters	CFO	Sell	10,000	$21.33	$213,300.00
7/26/2021	Rong Zhou	EVP	Sell	6,000	$20.87	$125,220.00	92,244
7/20/2021	Rong Zhou	EVP	Sell	5,187	$20.57	$106,696.59
7/15/2021	Yakob Liawatidewi	EVP	Sell	31,524	$20.01	$630,795.24	77,927
7/7/2021	William J. Peters	CFO	Sell	10,000	$20.37	$203,700.00
6/8/2021	Rong Zhou	EVP	Sell	8,180	$19.34	$158,201.20
6/7/2021	Richard K. Prins	Director	Sell	5,000	$18.70	$93,500.00	140,741
6/3/2021	Floyd F. Petersen	Director	Sell	10,000	$18.65	$186,500.00	83,354
6/1/2021	Richard Koo	Director	Sell	25,827	$19.28	$497,944.56	279,097
5/20/2021	Howard Lee	Director	Sell	10,000	$19.74	$197,400.00	142,914
5/13/2021	Michael A. Zasloff	Director	Sell	25,827	$19.34	$499,494.18	67,014
5/13/2021	Rong Zhou	EVP	Sell	700	$19.58	$13,706.00	96,965
5/11/2021	Richard K. Prins	Director	Sell	15,827	$18.90	$299,130.30	54,987
5/11/2021	Yakob Liawatidewi	EVP	Sell	10,000	$19.06	$190,600.00	71,351
3/15/2021	William J. Peters	CFO	Sell	4,244	$19.03	$80,763.32	85,304
2/18/2021	Jack Y Zhang	CEO	Sell	30,467	$18.59	$566,381.53
2/11/2021	Jack Y Zhang	CEO	Sell	19,823	$19.06	$377,826.38	2,246,988
2/9/2021	Jack Y Zhang	CEO	Sell	40,886	$18.92	$773,563.12	2,246,988
2/4/2021	Jack Y Zhang	CEO	Sell	25,570	$18.89	$483,017.30	2,246,988
2/2/2021	Jack Y Zhang	CEO	Sell	37,931	$18.43	$699,068.33	2,246,988
2/1/2021	Floyd F. Petersen	Director	Sell	639	$18.26	$11,668.14	73,354
1/19/2021	William J. Peters	CFO	Sell	6,495	$18.67	$121,261.65
12/1/2020	Floyd F. Petersen	Director	Sell	500	$17.87	$8,935.00	73,993
11/2/2020	Floyd F. Petersen	Director	Sell	500	$19.84	$9,920.00	74,493
9/1/2020	Floyd F. Petersen	Director	Sell	500	$19.90	$9,950.00	75,493
8/14/2020	David Maris	Director	Buy	1,000	$20.26	$20,260.00	13,151
8/14/2020	William J. Peters	CFO	Sell	5,512	$20.36	$112,224.32	95,652
8/11/2020	Richard K. Prins	Director	Sell	6,000	$20.33	$121,980.00	39,160
8/3/2020	Floyd F. Petersen	Director	Sell	500	$20.62	$10,310.00	75,993
7/21/2020	Yakob Liawatidewi	EVP	Sell	5,978	$21.22	$126,853.16	50,182
7/6/2020	William J. Peters	CFO	Sell	13,656	$22.00	$300,432.00
7/1/2020	Floyd F. Petersen	Director	Sell	500	$22.27	$11,135.00	76,493
6/9/2020	Yakob Liawatidewi	EVP	Sell	23,405	$20.12	$470,908.60	69,529
6/3/2020	Rong Zhou	EVP	Sell	13,163	$18.82	$247,727.66
6/1/2020	Floyd F. Petersen	Director	Sell	500	$18.97	$9,485.00	71,142
5/27/2020	Richard Koo	Director	Sell	47,782	$18.18	$868,676.76	295,201
5/20/2020	Howard Lee	Director	Sell	17,782	$18.43	$327,722.26	145,863
5/14/2020	Michael A. Zasloff	Director	Sell	14,832	$18.00	$266,976.00	50,168
5/12/2020	Michael A. Zasloff	Director	Sell	10,000	$19.00	$190,000.00	45,336
5/1/2020	Floyd F. Petersen	Director	Sell	500	$16.66	$8,330.00	71,642
4/1/2020	Floyd F. Petersen	Director	Sell	500	$14.36	$7,180.00	72,142

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SEC Filings (Institutional Ownership Changes) for Amphastar Pharmaceuticals (NASDAQ:AMPH)

61.72% of Amphastar Pharmaceuticals stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

Amphastar Pharmaceuticals Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
2/17/2023	Truist Financial Corp	28,568	$0.80M	0.0%	+260.3%	0.059%
2/16/2023	Alliancebernstein L.P.	80,444	$2.25M	0.0%	+59.3%	0.166%
2/16/2023	Point72 Middle East FZE	1,782	$50K	0.0%	N/A	0.004%
2/16/2023	State of Wyoming	3,835	$0.11M	0.0%	+77.0%	0.008%
2/15/2023	CI Private Wealth LLC	12,600	$0.35M	0.0%	N/A	0.026%
2/15/2023	Jane Street Group LLC	8,249	$0.23M	0.0%	-82.1%	0.017%
2/15/2023	Lazard Asset Management LLC	6,033	$0.17M	0.0%	+13.2%	0.012%
2/15/2023	Schonfeld Strategic Advisors LLC	16,398	$0.46M	0.0%	-50.2%	0.034%
2/15/2023	Squarepoint Ops LLC	15,453	$0.43M	0.0%	N/A	0.032%
2/15/2023	Legal & General Group Plc	92,590	$2.59M	0.0%	+1.3%	0.192%
2/15/2023	Millennium Management LLC	97,430	$2.73M	0.0%	+608.1%	0.202%
2/15/2023	Morgan Stanley	603,048	$16.90M	0.0%	-15.1%	1.248%
2/15/2023	Eagle Asset Management Inc.	300,873	$8.48M	0.1%	-3.0%	0.623%
2/15/2023	Algert Global LLC	8,653	$0.24M	0.0%	-75.6%	0.018%
2/15/2023	AQR Capital Management LLC	112,603	$3.16M	0.0%	+18.8%	0.233%
2/14/2023	Price T Rowe Associates Inc. MD	789,170	$22.11M	0.0%	-2.4%	1.633%
2/14/2023	Arrowstreet Capital Limited Partnership	166,040	$4.65M	0.0%	-17.4%	0.344%
2/14/2023	Silvercrest Asset Management Group LLC	223,158	$6.25M	0.0%	-0.9%	0.462%
2/14/2023	Engineers Gate Manager LP	16,273	$0.46M	0.0%	N/A	0.034%
2/14/2023	Portolan Capital Management LLC	270,791	$7.59M	0.8%	-4.0%	0.560%
2/13/2023	Charles Schwab Investment Management Inc.	326,788	$9.16M	0.0%	+6.3%	0.676%
2/13/2023	Deutsche Bank AG	21,145	$0.59M	0.0%	+15.5%	0.044%
2/13/2023	Panagora Asset Management Inc.	19,785	$0.55M	0.0%	-19.8%	0.041%
2/13/2023	Wells Fargo & Company MN	3,514	$98K	0.0%	-27.7%	0.007%
2/13/2023	Barclays PLC	62,930	$1.76M	0.0%	+13.4%	0.130%
2/13/2023	Renaissance Technologies LLC	447,400	$12.54M	0.0%	+3.1%	0.926%
2/13/2023	Shaker Investments LLC OH	81,287	$2.28M	1.4%	+1.1%	0.168%
2/13/2023	ExodusPoint Capital Management LP	14,515	$0.41M	0.0%	N/A	0.030%
2/13/2023	Credit Suisse AG	55,710	$1.56M	0.0%	+43.1%	0.115%
2/13/2023	Martingale Asset Management L P	46,148	$1.29M	0.0%	-29.6%	0.095%
2/13/2023	Geode Capital Management LLC	722,281	$20.24M	0.0%	+2.0%	1.494%
2/13/2023	American Century Companies Inc.	38,800	$1.09M	0.0%	-30.7%	0.080%
2/13/2023	Commonwealth of Pennsylvania Public School Empls Retrmt SYS	40,346	$1.13M	0.0%	+15.8%	0.083%
2/13/2023	Fuller & Thaler Asset Management Inc.	500,065	$14.01M	0.1%	-30.1%	1.035%
2/13/2023	JPMorgan Chase & Co.	113,753	$3.19M	0.0%	-48.2%	0.235%
2/13/2023	Teacher Retirement System of Texas	39,494	$1.11M	0.0%	-19.7%	0.082%
2/10/2023	Bank of America Corp DE	65,009	$1.82M	0.0%	-26.8%	0.135%
2/10/2023	New York Life Investment Management LLC	15,761	$0.44M	0.0%	+12.4%	0.033%
2/10/2023	Globeflex Capital L P	66,122	$1.85M	0.2%	-8.5%	0.137%
2/10/2023	Schroder Investment Management Group	44,326	$1.24M	0.0%	-25.1%	0.092%
2/10/2023	Assetmark Inc.	27,946	$0.78M	0.0%	+6.9%	0.058%
2/10/2023	Aviva PLC	23,323	$8.09M	0.0%	-57.2%	0.048%
2/10/2023	Victory Capital Management Inc.	37,092	$1.04M	0.0%	+1.8%	0.077%
2/10/2023	HRT Financial LP	17,693	$0.50M	0.0%	N/A	0.037%
2/10/2023	PNC Financial Services Group Inc.	2,376	$67K	0.0%	-17.0%	0.005%
2/10/2023	Jupiter Asset Management Ltd.	13,128	$0.37M	0.0%	+18.6%	0.027%
2/9/2023	Mirae Asset Global Investments Co. Ltd.	17,715	$0.50M	0.0%	+2.8%	0.037%
2/9/2023	First Trust Advisors LP	64,989	$1.82M	0.0%	N/A	0.134%
2/9/2023	Victory Capital Management Inc.	33,859	$1.03M	0.0%	-7.0%	0.070%
2/9/2023	Dimensional Fund Advisors LP	1,866,544	$52.30M	0.0%	+1.5%	3.862%
2/9/2023	Principal Financial Group Inc.	238,952	$6.70M	0.0%	-2.4%	0.494%
2/9/2023	Aviva PLC	23,323	$0.65M	0.0%	-57.2%	0.048%
2/9/2023	Citigroup Inc.	31,747	$0.89M	0.0%	+2.4%	0.066%
2/9/2023	HighTower Advisors LLC	10,059	$0.28M	0.0%	N/A	0.021%
2/8/2023	Raymond James & Associates	23,078	$0.65M	0.0%	-10.9%	0.048%
2/8/2023	UBS Group AG	17,074	$0.48M	0.0%	+10.5%	0.035%
2/8/2023	Thrivent Financial for Lutherans	38,669	$1.08M	0.0%	-2.2%	0.080%
2/8/2023	Nordea Investment Management AB	337,427	$9.49M	0.0%	-2.3%	0.698%
2/8/2023	Swiss National Bank	94,600	$2.65M	0.0%	+2.2%	0.196%
2/8/2023	Russell Investments Group Ltd.	73,102	$2.05M	0.0%	+2.4%	0.151%
2/8/2023	Arizona State Retirement System	11,064	$0.31M	0.0%	+4.2%	0.023%
2/7/2023	Texas Permanent School Fund	25,344	$0.71M	0.0%	-7.8%	0.052%
2/7/2023	Shell Asset Management Co.	11,137	$0.31M	0.0%	-16.9%	0.023%
2/6/2023	Pacer Advisors Inc.	231,009	$6.47M	0.0%	N/A	0.478%
2/6/2023	Los Angeles Capital Management LLC	10,000	$0.28M	0.0%	-14.9%	0.021%
2/6/2023	Mesirow Institutional Investment Management Inc.	374,414	$10.49M	1.4%	-0.7%	0.775%
2/2/2023	Navellier & Associates Inc.	13,155	$0.37M	0.1%	-41.8%	0.027%
2/2/2023	SG Americas Securities LLC	10,588	$0.30M	0.0%	+138.8%	0.022%
2/2/2023	ProShare Advisors LLC	10,023	$0.28M	0.0%	+6.8%	0.021%
2/1/2023	Bank of Montreal Can	7,414	$0.21M	0.0%	+8.8%	0.015%
2/1/2023	Zurcher Kantonalbank Zurich Cantonalbank	7,831	$0.22M	0.0%	+21.2%	0.016%
2/1/2023	Cornerstone Investment Partners LLC	11,300	$0.32M	0.0%	-5.0%	0.023%
2/1/2023	Anfield Capital Management LLC	1,027	$29K	0.0%	+67.3%	0.002%
1/31/2023	Summit Global Investments	29,500	$0.83M	0.1%	+46.8%	0.061%
1/30/2023	New York State Common Retirement Fund	28,533	$0.80M	0.0%	+6.7%	0.059%
1/30/2023	Versor Investments LP	15,800	$0.44M	0.0%	+44.6%	0.033%
1/26/2023	Comerica Bank	20,752	$0.60M	0.0%	-24.8%	0.043%
1/26/2023	Strs Ohio	18,300	$0.51M	0.0%	-33.0%	0.038%
1/26/2023	Dupont Capital Management Corp	2,980	$84K	0.0%	N/A	0.006%
1/24/2023	Ziegler Capital Management LLC	27,367	$0.77M	0.0%	-18.9%	0.057%
1/24/2023	Louisiana State Employees Retirement System	17,900	$0.50M	0.0%	-2.2%	0.037%
1/23/2023	Allspring Global Investments Holdings LLC	110,365	$3.09M	0.0%	-51.3%	0.228%
1/20/2023	Veriti Management LLC	9,260	$0.26M	0.0%	-6.3%	0.019%
1/18/2023	Exchange Traded Concepts LLC	37,152	$1.04M	0.0%	+3.2%	0.077%
1/13/2023	Allworth Financial LP	1,383	$39K	0.0%	-26.2%	0.003%
1/13/2023	Lam Group Inc.	130,250	$3.65M	3.7%	N/A	0.269%
1/12/2023	Assenagon Asset Management S.A.	173,479	$4.86M	0.0%	+19.5%	0.359%
1/9/2023	Yousif Capital Management LLC	23,647	$0.66M	0.0%	-16.4%	0.049%
12/13/2022	Perigon Wealth Management LLC	7,850	$0.22M	0.0%	N/A	0.016%
12/8/2022	Bank of New York Mellon Corp	362,875	$10.20M	0.0%	-0.8%	0.751%
11/22/2022	Teachers Retirement System of The State of Kentucky	11,021	$0.31M	0.0%	N/A	0.023%
11/22/2022	Capital Impact Advisors LLC	14,669	$0.42M	0.4%	+6.0%	0.030%
11/21/2022	California State Teachers Retirement System	49,024	$1.38M	0.0%	-1.5%	0.101%
11/16/2022	Advisory Research Inc.	15,148	$0.43M	0.0%	N/A	0.031%
11/16/2022	BNP Paribas Arbitrage SNC	16,520	$0.46M	0.0%	-67.6%	0.034%
11/15/2022	State Street Corp	1,533,793	$43.10M	0.0%	-0.5%	3.174%
11/15/2022	Jacobs Levy Equity Management Inc.	188,039	$5.28M	0.0%	+0.5%	0.389%
11/15/2022	Algert Global LLC	35,523	$1M	0.1%	+15.6%	0.073%
11/15/2022	Summit Global Investments	20,100	$0.57M	0.1%	-62.2%	0.042%
11/15/2022	Thrivent Financial for Lutherans	39,521	$1.11M	0.0%	+7.0%	0.082%

Data available starting January 2016

Amphastar Pharmaceuticals, Inc. engages in developing, manufacturing, marketing, and selling technically challenging generic and proprietary injectable, inhalation, and intranasal products, and insulin active pharmaceutical ingredient. It operates through Finished Pharmaceutical Products and Active Pharmaceutical Ingredients Products segments. The Finished Pharmaceutical Products segment manufactures, markets, and distributes Primatene Mist, enoxaparin, naloxone, phytonadione, lidocaine, and other critical and non-critical care drugs. The Active Pharmaceutical Ingredients Products segment offers RHI API and porcine insulin API for external customers and internal product development. The company was founded by Zi-Ping Luo and Yong Feng Zhang on February 29, 1996 and is headquartered in Rancho Cucamonga, CA.

Today's Range

Now: $37.59

$37.51

$38.18

50 Day Range

MA: $33.72

$28.97

$37.92

52 Week Range

Now: $37.59

$26.76

$44.46

Volume

65,033 shs

Average Volume

267,333 shs

Market Capitalization

$1.80 billion

P/E Ratio

21.36

Dividend Yield

N/A

Beta

0.73

Who are the company insiders with the largest holdings of Amphastar Pharmaceuticals?: Amphastar Pharmaceuticals' top insider shareholders include:
Jack Y Zhang (CEO)
Richard Koo (Director)
Howard Lee (Director)
Richard K Prins (Director)
William J Peters (CFO)
Rong Zhou (EVP)
Floyd F Petersen (Director)
Yakob Liawatidewi (EVP)
Michael A Zasloff (Director)
Diane G Gerst (Director)
Learn More about top insider investors at Amphastar Pharmaceuticals.
Who are the major institutional investors of Amphastar Pharmaceuticals?: Amphastar Pharmaceuticals' top institutional shareholders include:
Dimensional Fund Advisors LP — 3.86%
Price T Rowe Associates Inc. MD — 1.63%
Geode Capital Management LLC — 1.49%
Morgan Stanley — 1.25%
Fuller & Thaler Asset Management Inc. — 1.03%
Renaissance Technologies LLC — 0.93%
Learn More about top institutional investors of Amphastar Pharmaceuticals stock.
Which institutional investors are selling Amphastar Pharmaceuticals stock?: During the previous quarter, AMPH stock was sold by these institutional investors:
Fuller & Thaler Asset Management Inc.
Allspring Global Investments Holdings LLC
Morgan Stanley
JPMorgan Chase & Co.
Jane Street Group LLC
Arrowstreet Capital Limited Partnership
Aviva PLC
Aviva PLC
In the last year, company insiders that have sold Amphastar Pharmaceuticals company stock include:
Jack Y Zhang (CEO)
Richard Koo (Director)
Howard Lee (Director)
Richard K Prins (Director)
William J Peters (CFO)
Rong Zhou (EVP)
Floyd F Petersen (Director)
Learn More investors selling Amphastar Pharmaceuticals stock.
Which institutional investors are buying Amphastar Pharmaceuticals stock?: During the last quarter, AMPH stock was bought by institutional investors including:
Pacer Advisors Inc.
Lam Group Inc.
Millennium Management LLC
First Trust Advisors LP
Alliancebernstein L.P.
Assenagon Asset Management S.A.
Dimensional Fund Advisors LP
Truist Financial Corp

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AMPH Insider Trading

Amphastar Pharmaceuticals Insider Trading History Chart

Amphastar Pharmaceuticals Share Price & Price History

Amphastar Pharmaceuticals Insider Trading History

SEC Filings (Institutional Ownership Changes) for Amphastar Pharmaceuticals (NASDAQ:AMPH)

Institutional Buying and Selling by Quarter

Amphastar Pharmaceuticals Institutional Trading History

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Who are the company insiders with the largest holdings of Amphastar Pharmaceuticals?

Who are the major institutional investors of Amphastar Pharmaceuticals?

Which institutional investors are selling Amphastar Pharmaceuticals stock?

Which institutional investors are buying Amphastar Pharmaceuticals stock?