AMPH Insider Trading

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Insider Ownership Percentage: 28.40%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $12,869,107.73

Amphastar Pharmaceuticals Insider Trading History Chart

Amphastar Pharmaceuticals Share Price & Price History

^$45.99

▼ -1.31 (-2.77%)

As of 09/29/2023 01:00 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
9/6/2023	William J. Peters	CFO	Sell	60,743	$51.75	$3,143,450.25	101,360
8/28/2023	Yakob Liawatidewi	EVP	Sell	28,816	$53.13	$1,530,994.08	69,669
8/18/2023	Richard K. Prins	Director	Sell	2,000	$52.50	$105,000.00	40,895
8/15/2023	Michael A. Zasloff	Director	Sell	12,759	$57.22	$730,069.98	33,826
6/15/2023	Rong Zhou	EVP	Sell	5,000	$51.79	$258,950.00	96,888
6/15/2023	William J. Peters	CFO	Sell	36,868	$50.85	$1,874,737.80	105,603
6/13/2023	Rong Zhou	EVP	Sell	5,000	$48.24	$241,200.00	88,313
6/2/2023	William J. Peters	CFO	Sell	11,000	$46.35	$509,850.00	105,603
6/1/2023	Howard Lee	Director	Sell	16,679	$45.02	$750,888.58	142,939
5/18/2023	Rong Zhou	EVP	Sell	10,000	$44.20	$442,000.00	87,598
5/18/2023	William J. Peters	CFO	Sell	10,500	$44.35	$465,675.00	105,148
5/17/2023	Floyd F. Petersen	Director	Sell	5,000	$43.13	$215,650.00	80,117
5/15/2023	Michael A. Zasloff	Director	Sell	7,500	$42.18	$316,350.00	43,869
5/12/2023	Richard K. Prins	Director	Sell	5,000	$42.06	$210,300.00	47,342
4/17/2023	William J. Peters	CFO	Sell	5,632	$42.35	$238,515.20	105,148
4/13/2023	William J. Peters	CFO	Sell	4,868	$42.35	$206,159.80	105,148
4/13/2023	Yakob Liawatidewi	EVP	Sell	11,494	$41.56	$477,690.64	69,215
4/10/2023	William J. Peters	CFO	Sell	10,032	$40.35	$404,791.20	105,148
4/10/2023	Yakob Liawatidewi	EVP	Sell	5,000	$40.00	$200,000.00	69,215
4/3/2023	Floyd F. Petersen	Director	Sell	491	$37.72	$18,520.52	85,117
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

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

65.09% 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
9/8/2023	Tucker Asset Management LLC	27,802	$1.60M	0.5%	-12.2%	0.058%
8/22/2023	Virginia Retirement Systems ET AL	29,300	$1.68M	0.0%	N/A	0.061%
8/21/2023	California State Teachers Retirement System	46,564	$2.68M	0.0%	-3.4%	0.096%
8/21/2023	Osaic Holdings Inc.	10,656	$0.61M	0.0%	+511.0%	0.022%
8/21/2023	Teachers Retirement System of The State of Kentucky	11,691	$0.67M	0.0%	+6.1%	0.024%
8/18/2023	Legato Capital Management LLC	8,091	$0.47M	0.1%	N/A	0.017%
8/16/2023	Nuveen Asset Management LLC	374,519	$21.52M	0.0%	+17.7%	0.767%
8/16/2023	Bridge City Capital LLC	22,814	$1.31M	0.6%	N/A	0.047%
8/15/2023	Alliancebernstein L.P.	50,080	$2.88M	0.0%	+11.5%	0.102%
8/15/2023	Wells Fargo & Company MN	36,492	$2.10M	0.0%	+113.5%	0.075%
8/15/2023	State of Tennessee Treasury Department	22,426	$1.29M	0.0%	+8.1%	0.046%
8/15/2023	Vestcor Inc	9,571	$0.55M	0.0%	-33.3%	0.020%
8/15/2023	XTX Topco Ltd	6,105	$0.35M	0.1%	N/A	0.012%
8/15/2023	Goldman Sachs Group Inc.	284,574	$16.35M	0.0%	+28.4%	0.582%
8/15/2023	Zacks Investment Management	17,241	$0.99M	0.0%	N/A	0.035%
8/15/2023	Lazard Asset Management LLC	6,696	$0.38M	0.0%	+65.0%	0.014%
8/15/2023	Royal Bank of Canada	25,449	$1.46M	0.0%	+538.0%	0.052%
8/14/2023	State of Wyoming	4,743	$0.27M	0.1%	+376.7%	0.010%
8/14/2023	Tudor Investment Corp Et Al	24,107	$1.39M	0.0%	+50.6%	0.049%
8/14/2023	Guidance Capital Inc.	6,885	$0.38M	0.2%	N/A	0.014%
8/14/2023	Tower Research Capital LLC TRC	1,142	$66K	0.0%	-42.8%	0.002%
8/14/2023	State of Wisconsin Investment Board	33,409	$1.92M	0.0%	-5.2%	0.068%
8/14/2023	State Street Corp	1,394,504	$80.14M	0.0%	+2.6%	2.854%
8/14/2023	West Tower Group LLC	677	$39K	0.0%	N/A	0.001%
8/14/2023	Portolan Capital Management LLC	182,243	$10.47M	0.9%	-46.5%	0.373%
8/14/2023	WINTON GROUP Ltd	9,859	$0.57M	0.0%	-61.8%	0.020%
8/14/2023	Frontier Capital Management Co. LLC	145,896	$8.39M	0.1%	-22.0%	0.299%
8/14/2023	Nuveen Asset Management LLC	374,519	$21.52M	0.0%	+17.7%	0.767%
8/14/2023	Silvercrest Asset Management Group LLC	109,647	$6.30M	0.0%	-29.2%	0.224%
8/14/2023	Thrivent Financial for Lutherans	88,131	$5.07M	0.0%	+135.9%	0.180%
8/14/2023	Eqis Capital Management Inc.	3,586	$0.21M	0.0%	N/A	0.007%
8/14/2023	1832 Asset Management L.P.	100,000	$5.75M	0.0%	N/A	0.205%
8/11/2023	Epoch Investment Partners Inc.	132,096	$7.59M	0.0%	N/A	0.274%
8/11/2023	Renaissance Technologies LLC	492,583	$28.31M	0.0%	-0.8%	1.020%
8/11/2023	Credit Suisse AG	51,185	$2.94M	0.0%	-11.7%	0.106%
8/11/2023	BlackRock Inc.	6,088,227	$349.89M	0.0%	-7.3%	12.613%
8/11/2023	State Board of Administration of Florida Retirement System	10,783	$0.62M	0.0%	+91.8%	0.022%
8/11/2023	Beacon Harbor Wealth Advisors Inc.	105,005	$6.04M	2.0%	N/A	0.218%
8/11/2023	Franklin Resources Inc.	27,586	$1.59M	0.0%	+189.4%	0.057%
8/11/2023	Trexquant Investment LP	10,239	$0.59M	0.0%	-81.9%	0.021%
8/11/2023	Guggenheim Capital LLC	6,127	$0.35M	0.0%	-48.4%	0.013%
8/11/2023	Geode Capital Management LLC	780,259	$44.84M	0.0%	+2.7%	1.616%
8/11/2023	Sei Investments Co.	6,186	$0.36M	0.0%	-57.1%	0.013%
8/11/2023	D.A. Davidson & CO.	29,887	$1.72M	0.0%	-33.7%	0.062%
8/11/2023	JPMorgan Chase & Co.	83,848	$4.82M	0.0%	-28.8%	0.174%
8/11/2023	Penserra Capital Management LLC	64,291	$3.69M	0.1%	N/A	0.133%
8/11/2023	Northern Trust Corp	635,443	$36.52M	0.0%	-2.1%	1.316%
8/11/2023	ExodusPoint Capital Management LP	19,381	$1.11M	0.0%	N/A	0.040%
8/10/2023	Osaic Holdings Inc.	10,656	$0.61M	0.0%	+511.0%	0.022%
8/10/2023	Great West Life Assurance Co. Can	32,537	$1.87M	0.0%	-8.3%	0.067%
8/10/2023	Profund Advisors LLC	6,218	$0.36M	0.0%	N/A	0.013%
8/10/2023	Commonwealth Equity Services LLC	7,187	$0.41M	0.0%	N/A	0.015%
8/10/2023	Mirae Asset Global Investments Co. Ltd.	18,324	$1.05M	0.0%	+3.6%	0.038%
8/10/2023	Russell Investments Group Ltd.	36,704	$2.11M	0.0%	+1.3%	0.076%
8/10/2023	US Bancorp DE	1,081	$62K	0.0%	-67.8%	0.002%
8/10/2023	Charles Schwab Investment Management Inc.	328,262	$18.87M	0.0%	-0.5%	0.680%
8/10/2023	Citigroup Inc.	37,749	$2.17M	0.0%	+52.5%	0.078%
8/9/2023	Dimensional Fund Advisors LP	1,930,615	$110.95M	0.0%	+0.7%	4.000%
8/9/2023	Spire Wealth Management	19,523	$1.12M	0.0%	N/A	0.040%
8/9/2023	BNP Paribas Arbitrage SNC	67,372	$3.87M	0.0%	+111.9%	0.140%
8/9/2023	Public Employees Retirement Association of Colorado	8,717	$0.50M	0.0%	-22.4%	0.018%
8/9/2023	TD Asset Management Inc	158,058	$9.08M	0.0%	+2,331.7%	0.327%
8/9/2023	Lido Advisors LLC	6,559	$0.38M	0.0%	N/A	0.014%
8/9/2023	Swiss National Bank	84,000	$4.83M	0.0%	+0.7%	0.174%
8/9/2023	Commonwealth of Pennsylvania Public School Empls Retrmt SYS	42,563	$2.45M	0.0%	+6.6%	0.088%
8/7/2023	Granite Investment Partners LLC	533,159	$30.64M	1.2%	-0.7%	1.105%
8/7/2023	Principal Financial Group Inc.	228,759	$13.15M	0.0%	-1.7%	0.474%
8/7/2023	Texas Permanent School Fund Corp	33,153	$1.91M	0.0%	-1.9%	0.069%
8/7/2023	New York Life Investment Management LLC	10,990	$0.63M	0.0%	-12.6%	0.023%
8/4/2023	Envestnet Asset Management Inc.	9,457	$0.54M	0.0%	+4.2%	0.020%
8/4/2023	American International Group Inc.	20,381	$1.17M	0.0%	-2.3%	0.042%
8/3/2023	Los Angeles Capital Management LLC	27,085	$1.56M	0.0%	+2.3%	0.056%
8/3/2023	Barclays PLC	30,257	$1.74M	0.0%	-26.8%	0.063%
8/3/2023	Bank of New York Mellon Corp	342,121	$19.66M	0.0%	-1.5%	0.709%
8/3/2023	Jackson Creek Investment Advisors LLC	26,758	$1.54M	0.6%	+3.4%	0.055%
8/2/2023	Yousif Capital Management LLC	18,832	$1.08M	0.0%	-7.8%	0.039%
8/2/2023	Bank of Montreal Can	8,536	$0.49M	0.0%	N/A	0.018%
8/2/2023	Perigon Wealth Management LLC	4,771	$0.27M	0.0%	-40.7%	0.010%
8/2/2023	LSV Asset Management	212,368	$12.21M	0.0%	+539.7%	0.440%
8/1/2023	Truist Financial Corp	17,266	$0.99M	0.0%	-48.3%	0.036%
8/1/2023	Arizona State Retirement System	10,829	$0.62M	0.0%	-3.3%	0.022%
7/31/2023	Crossmark Global Holdings Inc.	11,245	$0.68M	0.0%	-2.3%	0.023%
7/31/2023	Dakota Wealth Management	4,886	$0.28M	0.0%	-10.0%	0.010%
7/31/2023	Mesirow Institutional Investment Management Inc.	129,462	$7.44M	0.8%	-60.2%	0.268%
7/31/2023	Strs Ohio	15,100	$0.87M	0.0%	N/A	0.031%
7/28/2023	KBC Group NV	2,770	$0.16M	0.0%	-12.8%	0.006%
7/27/2023	Victory Capital Management Inc.	28,936	$1.66M	0.0%	-33.8%	0.060%
7/27/2023	New York State Teachers Retirement System	27,534	$1.58M	0.0%	+5.2%	0.057%
7/27/2023	EA Series Trust	17,519	$1.01M	0.0%	N/A	0.036%
7/27/2023	J.W. Cole Advisors Inc.	10,922	$0.63M	0.0%	N/A	0.023%
7/26/2023	Oregon Public Employees Retirement Fund	11,717	$0.67M	0.0%	-3.3%	0.024%
7/25/2023	Raymond James & Associates	55,168	$3.17M	0.0%	+134.1%	0.114%
7/25/2023	Shaker Investments LLC OH	20,952	$1.20M	0.6%	-74.5%	0.043%
7/25/2023	Assenagon Asset Management S.A.	12,123	$0.70M	0.0%	-92.8%	0.025%
7/25/2023	Roman Butler Fullerton & Co.	24,710	$1.54M	0.7%	N/A	0.051%
7/25/2023	State of Alaska Department of Revenue	24,759	$1.42M	0.0%	-4.1%	0.051%
7/24/2023	Allspring Global Investments Holdings LLC	5,954	$0.34M	0.0%	-94.0%	0.012%
7/20/2023	Exchange Traded Concepts LLC	46,093	$2.65M	0.1%	-1.1%	0.095%
7/20/2023	Bailard Inc.	5,600	$0.32M	0.0%	-12.5%	0.012%
7/19/2023	Teacher Retirement System of Texas	10,460	$0.60M	0.0%	-12.2%	0.022%

Data available starting January 2016

Amphastar Pharmaceuticals, Inc., a bio-pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectable, inhalation, and intranasal products in the United States, China, and France. The company operates through two segments, Finished Pharmaceutical Products and Active Pharmaceutical Ingredient (API). It offers Primatene Mist, an over-the-counter epinephrine inhalation product for the temporary relief of mild symptoms of intermittent asthma; Enoxaparin, a low molecular weight heparin to prevent and treat deep vein thrombosis; Naloxone for opioid overdose; Glucagon for injection emergency kit; and Cortrosyn, a lyophilized powder for use as a diagnostic agent in the screening of patients with adrenocortical insufficiency. The company also provides Amphadase, a bovine-sourced hyaluronidase injection to absorb and disperse other injected drugs; Epinephrine injection for the emergency treatment of allergic reactions; Lidocaine jelly, an anesthetic product for urological procedures; Lidocaine topical solution for various procedures; Phytonadione injection, a vitamin K1 injection for newborn babies; emergency syringe products for emergency use in hospital settings; morphine injection for use with patient controlled analgesia pumps; and Lorazepam injection for surgery and medical procedures. In addition, it offers Neostigmine methylsulfate injection to treat myasthenia gravis and to reverse the effects of muscle relaxants; Isoproterenol hydrochloride injection for mild or transient episodes of heart block; Ganirelix Acetate injection for the inhibition of premature luteinizing hormone surges in women undergoing controlled ovarian hyperstimulation; and Vasopressin to increase blood pressure in adults with vasodilatory shock. Further, the company distributes recombinant human insulin APIs and porcine insulin API. It serves hospitals, care facilities, alternate care sites, clinics, and doctors' offices. The company was founded in 1996 and is headquartered in Rancho Cucamonga, California.

Today's Range

Now: $45.99

$45.68

$47.70

50 Day Range

MA: $53.60

$45.51

$65.00

52 Week Range

Now: $45.99

$26.76

$67.66

Volume

524,136 shs

Average Volume

616,318 shs

Market Capitalization

$2.22 billion

P/E Ratio

23.58

Dividend Yield

N/A

Beta

0.84

Who are the company insiders with the largest holdings of Amphastar Pharmaceuticals?: Amphastar Pharmaceuticals' top insider shareholders include:
Jack Y Zhang (CEO)
Howard Lee (Director)
William J Peters (CFO)
Rong Zhou (EVP)
Floyd F Petersen (Director)
Yakob Liawatidewi (EVP)
Richard K Prins (Director)
Michael A Zasloff (Director)
Diane G Gerst (Director)
Learn More about top insider investors at Amphastar Pharmaceuticals.