AMPH Insider Trading

Insider Ownership Percentage: 27.80%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $8,909,699.70

Amphastar Pharmaceuticals Insider Trading History Chart

This chart shows the insider buying and selling history at Amphastar Pharmaceuticals by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Amphastar Pharmaceuticals Share Price & Price History

Current Price: $29.18
Price Change: Price Increase of +0.49 (1.71%)
As of 11/25/2022 01:00 AM ET

This chart shows the closing price history over time for AMPH up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Amphastar Pharmaceuticals Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
10/3/2022Floyd F. PetersenDirectorSell500$28.59$14,295.0088,108View SEC Filing Icon  
8/9/2022William J. PetersCFOSell10,000$38.35$383,500.00100,480View SEC Filing Icon  
8/9/2022Yakob LiawatidewiEVPSell3,055$39.00$119,145.0061,607View SEC Filing Icon  
8/1/2022Floyd F. PetersenDirectorSell500$37.48$18,740.0089,108View SEC Filing Icon  
7/18/2022Diane G GerstDirectorSell1,520$37.23$56,589.6012,842View SEC Filing Icon  
7/15/2022Yakob LiawatidewiEVPSell10,837$36.64$397,067.6861,607View SEC Filing Icon  
7/11/2022Diane G GerstDirectorSell1,521$36.26$55,151.4612,842View SEC Filing Icon  
7/5/2022Diane G GerstDirectorSell1,813$35.00$63,455.0012,842View SEC Filing Icon  
7/1/2022Floyd F. PetersenDirectorSell500$34.78$17,390.0089,608View SEC Filing Icon  
6/30/2022William J. PetersCFOSell18,386$34.95$642,590.70100,480View SEC Filing Icon  
6/17/2022William J. PetersCFOSell5,512$32.05$176,659.60100,480View SEC Filing Icon  
6/6/2022Howard LeeDirectorSell10,291$37.79$388,896.89138,776View SEC Filing Icon  
6/1/2022Floyd F. PetersenDirectorSell500$37.00$18,500.0085,945View SEC Filing Icon  
5/23/2022Howard LeeDirectorSell10,000$34.93$349,300.00138,776View SEC Filing Icon  
5/18/2022Floyd F. PetersenDirectorSell9,924$35.05$347,836.2086,445View SEC Filing Icon  
5/18/2022Jack Y ZhangCEOSell67,046$34.14$2,288,950.442,156,523View SEC Filing Icon  
5/16/2022Michael A. ZasloffDirectorSell10,291$35.61$366,462.5147,206View SEC Filing Icon  
5/2/2022Floyd F. PetersenDirectorSell295$35.18$10,378.1076,078View SEC Filing Icon  
4/1/2022Floyd F. PetersenDirectorSell500$36.69$18,345.0076,373View SEC Filing Icon  
3/16/2022Michael A. ZasloffDirectorSell10,000$33.71$337,100.00View SEC Filing Icon  
3/15/2022William J. PetersCFOSell7,900$34.46$272,234.00View SEC Filing Icon  
3/1/2022Floyd F. PetersenDirectorSell500$27.27$13,635.00View SEC Filing Icon  
2/8/2022Rong ZhouEVPSell7,000$26.77$187,390.00View SEC Filing Icon  
2/8/2022William J. PetersCFOSell10,000$26.95$269,500.00View SEC Filing Icon  
2/1/2022Floyd F. PetersenDirectorSell500$24.08$12,040.00View SEC Filing Icon  
1/10/2022Rong ZhouEVPSell20,928$25.36$530,734.08View SEC Filing Icon  
1/10/2022William J. PetersCFOSell16,000$25.40$406,400.00View SEC Filing Icon  
1/7/2022William J. PetersCFOSell31,776$24.43$776,287.68View SEC Filing Icon  
1/3/2022Floyd F. PetersenDirectorSell500$23.22$11,610.00View SEC Filing Icon  
12/22/2021Floyd F. PetersenDirectorSell1,000$22.50$22,500.00View SEC Filing Icon  
12/21/2021William J. PetersCFOSell8,256$22.40$184,934.40View SEC Filing Icon  
12/16/2021William J. PetersCFOSell1,744$22.40$39,065.60View SEC Filing Icon  
12/10/2021Richard K. PrinsDirectorSell5,291$21.36$113,015.76View SEC Filing Icon  
11/22/2021Richard K. PrinsDirectorSell5,000$21.22$106,100.00View SEC Filing Icon  
11/11/2021Rong ZhouEVPSell7,813$21.67$169,307.71View SEC Filing Icon  
11/11/2021William J. PetersCFOSell10,000$21.33$213,300.00View SEC Filing Icon  
7/26/2021Rong ZhouEVPSell6,000$20.87$125,220.0092,244View SEC Filing Icon  
7/20/2021Rong ZhouEVPSell5,187$20.57$106,696.59View SEC Filing Icon  
7/15/2021Yakob LiawatidewiEVPSell31,524$20.01$630,795.2477,927View SEC Filing Icon  
7/7/2021William J. PetersCFOSell10,000$20.37$203,700.00View SEC Filing Icon  
6/8/2021Rong ZhouEVPSell8,180$19.34$158,201.20View SEC Filing Icon  
6/7/2021Richard K. PrinsDirectorSell5,000$18.70$93,500.00140,741View SEC Filing Icon  
6/3/2021Floyd F. PetersenDirectorSell10,000$18.65$186,500.0083,354View SEC Filing Icon  
6/1/2021Richard KooDirectorSell25,827$19.28$497,944.56279,097View SEC Filing Icon  
5/20/2021Howard LeeDirectorSell10,000$19.74$197,400.00142,914View SEC Filing Icon  
5/13/2021Michael A. ZasloffDirectorSell25,827$19.34$499,494.1867,014View SEC Filing Icon  
5/13/2021Rong ZhouEVPSell700$19.58$13,706.0096,965View SEC Filing Icon  
5/11/2021Richard K. PrinsDirectorSell15,827$18.90$299,130.3054,987View SEC Filing Icon  
5/11/2021Yakob LiawatidewiEVPSell10,000$19.06$190,600.0071,351View SEC Filing Icon  
3/15/2021William J. PetersCFOSell4,244$19.03$80,763.3285,304View SEC Filing Icon  
2/18/2021Jack Y ZhangCEOSell30,467$18.59$566,381.53
2/11/2021Jack Y ZhangCEOSell19,823$19.06$377,826.382,246,988View SEC Filing Icon  
2/9/2021Jack Y ZhangCEOSell40,886$18.92$773,563.122,246,988View SEC Filing Icon  
2/4/2021Jack Y ZhangCEOSell25,570$18.89$483,017.302,246,988View SEC Filing Icon  
2/2/2021Jack Y ZhangCEOSell37,931$18.43$699,068.332,246,988View SEC Filing Icon  
2/1/2021Floyd F. PetersenDirectorSell639$18.26$11,668.1473,354View SEC Filing Icon  
1/19/2021William J. PetersCFOSell6,495$18.67$121,261.65View SEC Filing Icon  
12/1/2020Floyd F. PetersenDirectorSell500$17.87$8,935.0073,993View SEC Filing Icon  
11/2/2020Floyd F. PetersenDirectorSell500$19.84$9,920.0074,493View SEC Filing Icon  
9/1/2020Floyd F. PetersenDirectorSell500$19.90$9,950.0075,493View SEC Filing Icon  
8/14/2020David MarisDirectorBuy1,000$20.26$20,260.0013,151View SEC Filing Icon  
8/14/2020William J. PetersCFOSell5,512$20.36$112,224.3295,652View SEC Filing Icon  
8/11/2020Richard K. PrinsDirectorSell6,000$20.33$121,980.0039,160View SEC Filing Icon  
8/3/2020Floyd F. PetersenDirectorSell500$20.62$10,310.0075,993View SEC Filing Icon  
7/21/2020Yakob LiawatidewiEVPSell5,978$21.22$126,853.1650,182View SEC Filing Icon  
7/6/2020William J. PetersCFOSell13,656$22.00$300,432.00View SEC Filing Icon  
7/1/2020Floyd F. PetersenDirectorSell500$22.27$11,135.0076,493View SEC Filing Icon  
6/9/2020Yakob LiawatidewiEVPSell23,405$20.12$470,908.6069,529View SEC Filing Icon  
6/3/2020Rong ZhouEVPSell13,163$18.82$247,727.66View SEC Filing Icon  
6/1/2020Floyd F. PetersenDirectorSell500$18.97$9,485.0071,142View SEC Filing Icon  
5/27/2020Richard KooDirectorSell47,782$18.18$868,676.76295,201View SEC Filing Icon  
5/20/2020Howard LeeDirectorSell17,782$18.43$327,722.26145,863View SEC Filing Icon  
5/14/2020Michael A. ZasloffDirectorSell14,832$18.00$266,976.0050,168View SEC Filing Icon  
5/12/2020Michael A. ZasloffDirectorSell10,000$19.00$190,000.0045,336View SEC Filing Icon  
5/1/2020Floyd F. PetersenDirectorSell500$16.66$8,330.0071,642View SEC Filing Icon  
4/1/2020Floyd F. PetersenDirectorSell500$14.36$7,180.0072,142View SEC Filing Icon  
3/13/2020William J. PetersCFOSell4,701$13.94$65,531.9476,011View SEC Filing Icon  
2/6/2020Jason B ShandellGeneral CounselSell21,933$19.83$434,931.39154,513View SEC Filing Icon  
1/21/2020William J. PetersCFOSell3,990$20.07$80,079.30View SEC Filing Icon  
1/8/2020Jason B ShandellGeneral CounselSell25,000$18.44$461,000.00163,898View SEC Filing Icon  
1/2/2020Floyd F. PetersenDirectorSell1,000$19.14$19,140.0073,642View SEC Filing Icon  
12/18/2019Jason B ShandellGeneral CounselSell8,205$19.13$156,961.65138,898View SEC Filing Icon  
12/2/2019Floyd F. PetersenDirectorSell500$19.25$9,625.0074,642View SEC Filing Icon  
See Full Table

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

63.11% 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

This chart shows the instiutional buying and selling at AMPH by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Amphastar Pharmaceuticals Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/22/2022Teachers Retirement System of The State of Kentucky11,021$0.31M0.0%N/A0.023%Search for SEC Filing on Google Icon
11/22/2022Capital Impact Advisors LLC14,669$0.42M0.4%+6.0%0.030%Search for SEC Filing on Google Icon
11/21/2022California State Teachers Retirement System49,024$1.38M0.0%-1.5%0.101%Search for SEC Filing on Google Icon
11/16/2022Advisory Research Inc.15,148$0.43M0.0%N/A0.031%Search for SEC Filing on Google Icon
11/16/2022BNP Paribas Arbitrage SNC16,520$0.46M0.0%-67.6%0.034%Search for SEC Filing on Google Icon
11/15/2022State Street Corp1,533,793$43.10M0.0%-0.5%3.174%Search for SEC Filing on Google Icon
11/15/2022Jacobs Levy Equity Management Inc.188,039$5.28M0.0%+0.5%0.389%Search for SEC Filing on Google Icon
11/15/2022Algert Global LLC35,523$1M0.1%+15.6%0.073%Search for SEC Filing on Google Icon
11/15/2022Summit Global Investments20,100$0.57M0.1%-62.2%0.042%Search for SEC Filing on Google Icon
11/15/2022Thrivent Financial for Lutherans39,521$1.11M0.0%+7.0%0.082%Search for SEC Filing on Google Icon
11/15/2022Two Sigma Advisers LP90,600$2.55M0.0%-18.7%0.187%Search for SEC Filing on Google Icon
11/15/2022Trexquant Investment LP26,482$0.74M0.0%-15.6%0.055%Search for SEC Filing on Google Icon
11/15/2022UBS Asset Management Americas Inc.46,423$1.30M0.0%-3.1%0.096%Search for SEC Filing on Google Icon
11/15/2022Vanguard Group Inc.2,606,162$73.23M0.0%+1.8%5.392%Search for SEC Filing on Google Icon
11/15/2022Price T Rowe Associates Inc. MD808,731$22.73M0.0%+396.7%1.673%Search for SEC Filing on Google Icon
11/15/2022Portolan Capital Management LLC282,187$7.93M0.8%+2.7%0.584%Search for SEC Filing on Google Icon
11/15/2022Marshall Wace LLP31,638$0.89M0.0%+11.2%0.065%Search for SEC Filing on Google Icon
11/15/2022Martingale Asset Management L P65,536$1.84M0.0%-12.1%0.136%Search for SEC Filing on Google Icon
11/15/2022Federated Hermes Inc.3,265,179$91.75M0.3%-0.5%6.756%Search for SEC Filing on Google Icon
11/15/2022Frontier Capital Management Co. LLC204,573$5.75M0.1%-0.5%0.423%Search for SEC Filing on Google Icon
11/15/2022Bank of New York Mellon Corp362,875$10.20M0.0%-0.8%0.751%Search for SEC Filing on Google Icon
11/15/2022BlackRock Inc.7,147,813$200.85M0.0%+1.1%14.790%Search for SEC Filing on Google Icon
11/14/2022Royal Bank of Canada4,011$0.11M0.0%+19.1%0.008%Search for SEC Filing on Google Icon
11/14/2022Point72 Hong Kong Ltd2,683$75K0.0%-44.0%0.006%Search for SEC Filing on Google Icon
11/14/2022Cubist Systematic Strategies LLC32,330$0.91M0.0%-71.2%0.067%Search for SEC Filing on Google Icon
11/14/2022Guggenheim Capital LLC14,073$0.40M0.0%-7.7%0.029%Search for SEC Filing on Google Icon
11/14/2022Renaissance Technologies LLC433,800$12.19M0.0%+6.6%0.898%Search for SEC Filing on Google Icon
11/14/2022Lazard Asset Management LLC5,331$0.15M0.0%+31.9%0.011%Search for SEC Filing on Google Icon
11/14/2022Nuveen Asset Management LLC416,607$11.71M0.0%-29.5%0.862%Search for SEC Filing on Google Icon
11/14/2022Renaissance Group LLC44,364$1.25M0.1%+3.3%0.092%Search for SEC Filing on Google Icon
11/14/2022AXA S.A.146,265$4.11M0.0%+83.1%0.303%Search for SEC Filing on Google Icon
11/14/2022Aviva PLC54,477$1.53M0.0%-4.0%0.113%Search for SEC Filing on Google Icon
11/14/2022Oberweis Asset Management Inc.101,500$2.85M0.7%+467.0%0.210%Search for SEC Filing on Google Icon
11/14/2022Shell Asset Management Co.13,398$0.38M0.0%-20.8%0.028%Search for SEC Filing on Google Icon
11/14/2022Hsbc Holdings PLC8,093$0.23M0.0%+6.7%0.017%Search for SEC Filing on Google Icon
11/14/2022Hennion & Walsh Asset Management Inc.7,286$0.21M0.0%N/A0.015%Search for SEC Filing on Google Icon
11/10/2022Credit Suisse AG38,929$1.09M0.0%+10.0%0.079%Search for SEC Filing on Google Icon
11/10/2022WINTON GROUP Ltd26,353$0.74M0.0%-11.1%0.054%Search for SEC Filing on Google Icon
11/10/2022Dimensional Fund Advisors LP1,839,134$51.68M0.0%+0.7%3.753%Search for SEC Filing on Google Icon
11/10/2022Tower Research Capital LLC TRC 5,143$0.14M0.0%+145.0%0.010%Search for SEC Filing on Google Icon
11/10/2022UBS Group AG15,450$0.43M0.0%-43.9%0.032%Search for SEC Filing on Google Icon
11/10/2022Jupiter Asset Management Ltd.11,067$0.31M0.0%-20.4%0.023%Search for SEC Filing on Google Icon
11/9/2022Amalgamated Bank18,577$0.52M0.0%+2.0%0.038%Search for SEC Filing on Google Icon
11/9/2022Jackson Creek Investment Advisors LLC27,577$0.78M0.4%-4.4%0.056%Search for SEC Filing on Google Icon
11/8/2022Allianz Asset Management GmbH20,924$0.59M0.0%-32.5%0.043%Search for SEC Filing on Google Icon
11/8/2022State Board of Administration of Florida Retirement System18,259$0.51M0.0%N/A0.037%Search for SEC Filing on Google Icon
11/8/2022Mutual of America Capital Management LLC83,250$2.34M0.0%+1,218.5%0.170%Search for SEC Filing on Google Icon
11/8/2022Mesirow Institutional Investment Management Inc.377,099$10.60M1.5%N/A0.769%Search for SEC Filing on Google Icon
11/8/2022Eagle Asset Management Inc.310,255$8.72M0.1%+36.4%0.633%Search for SEC Filing on Google Icon
11/7/2022LSV Asset Management10,700$0.30M0.0%-91.6%0.022%Search for SEC Filing on Google Icon
11/7/2022Nisa Investment Advisors LLC1,130$35K0.0%-55.7%0.002%Search for SEC Filing on Google Icon
11/7/2022D.A. Davidson & CO.49,090$1.38M0.0%-2.5%0.100%Search for SEC Filing on Google Icon
11/4/2022Prudential Financial Inc.141,132$3.97M0.0%+56.8%0.288%Search for SEC Filing on Google Icon
11/4/2022Russell Investments Group Ltd.71,394$2M0.0%-68.7%0.146%Search for SEC Filing on Google Icon
11/3/2022Financial Gravity Asset Management Inc.448$2.11M0.1%N/A0.001%Search for SEC Filing on Google Icon
11/3/2022Teacher Retirement System of Texas49,156$1.38M0.0%+590.5%0.100%Search for SEC Filing on Google Icon
11/3/2022Barclays PLC55,504$1.56M0.0%-13.4%0.113%Search for SEC Filing on Google Icon
11/2/2022Cim LLC6,652$0.21M0.0%N/A0.014%Search for SEC Filing on Google Icon
11/2/2022Victory Capital Management Inc.36,427$1.02M0.0%-18.6%0.074%Search for SEC Filing on Google Icon
11/1/2022Great West Life Assurance Co. Can42,367$1.19M0.0%N/A0.086%Search for SEC Filing on Google Icon
11/1/2022Assetmark Inc.26,132$0.73M0.0%N/A0.053%Search for SEC Filing on Google Icon
10/31/2022SG Americas Securities LLC4,434$0.13M0.0%-61.0%0.009%Search for SEC Filing on Google Icon
10/28/2022Comerica Bank27,592$0.85M0.0%-8.9%0.056%Search for SEC Filing on Google Icon
10/28/2022Maryland State Retirement & Pension System15,634$0.44M0.0%+2.6%0.032%Search for SEC Filing on Google Icon
10/27/2022US Bancorp DE2,492$70K0.0%+23.2%0.005%Search for SEC Filing on Google Icon
10/27/2022Money Concepts Capital Corp10,099$0.28M0.0%+4.7%0.021%Search for SEC Filing on Google Icon
10/27/2022Assenagon Asset Management S.A.145,216$4.08M0.0%-65.3%0.296%Search for SEC Filing on Google Icon
10/27/2022Strs Ohio27,300$0.77M0.0%+26.4%0.056%Search for SEC Filing on Google Icon
10/26/2022Allspring Global Investments Holdings LLC226,524$6.37M0.0%+283.6%0.462%Search for SEC Filing on Google Icon
10/26/2022Truist Financial Corp7,928$0.22M0.0%-59.1%0.016%Search for SEC Filing on Google Icon
10/25/2022Versor Investments LP10,929$0.31M0.0%-15.9%0.022%Search for SEC Filing on Google Icon
10/25/2022Hightower 6M Holding LLC10,307$0.29M0.0%-35.6%0.021%Search for SEC Filing on Google Icon
10/25/2022Raymond James & Associates25,912$0.73M0.0%+41.7%0.053%Search for SEC Filing on Google Icon
10/24/2022USA Financial Portformulas Corp1,181$33K0.1%-53.0%0.002%Search for SEC Filing on Google Icon
10/20/2022State of Alaska Department of Revenue26,469$0.74M0.0%-6.9%0.054%Search for SEC Filing on Google Icon
10/20/2022FinTrust Capital Advisors LLC7,000$0.20M0.1%+75.0%0.014%Search for SEC Filing on Google Icon
10/19/2022Louisiana State Employees Retirement System18,300$0.51M0.0%N/A0.037%Search for SEC Filing on Google Icon
10/19/2022Shaker Investments LLC OH80,399$2.26M1.5%+116.6%0.164%Search for SEC Filing on Google Icon
10/19/2022Nordea Investment Management AB345,378$10.12M0.0%-0.4%0.705%Search for SEC Filing on Google Icon
10/11/2022Juncture Wealth Strategies LLC12,208$0.34M0.2%+109.4%0.025%Search for SEC Filing on Google Icon
10/7/2022Exchange Traded Concepts LLC36,017$1.01M0.0%-33.7%0.073%Search for SEC Filing on Google Icon
9/16/2022Federated Hermes Inc.3,282,967$114.21M0.3%-5.9%6.698%Search for SEC Filing on Google Icon
8/23/2022Summit Global Investments53,214$1.85M0.2%+19.0%0.109%Search for SEC Filing on Google Icon
8/22/2022Legal & General Group Plc89,234$3.11M0.0%+2.3%0.182%Search for SEC Filing on Google Icon
8/18/2022Goldman Sachs Group Inc.329,843$11.48M0.0%+183.2%0.673%Search for SEC Filing on Google Icon
8/16/2022Castleark Management LLC192,649$6.70M0.4%N/A0.393%Search for SEC Filing on Google Icon
8/16/2022Thrivent Financial for Lutherans36,940$1.29M0.0%+23.2%0.075%Search for SEC Filing on Google Icon
8/16/2022Price T Rowe Associates Inc. MD162,814$5.66M0.0%N/A0.332%Search for SEC Filing on Google Icon
8/16/2022Prudential Financial Inc.90,015$3.07M0.0%+11.3%0.184%Search for SEC Filing on Google Icon
8/15/2022Occudo Quantitative Strategies LP66,113$2.30M0.2%+166.4%0.135%Search for SEC Filing on Google Icon
8/15/2022AQR Capital Management LLC35,290$1.23M0.0%+161.4%0.072%Search for SEC Filing on Google Icon
8/15/2022State Street Corp1,540,846$53.61M0.0%+16.6%3.144%Search for SEC Filing on Google Icon
8/15/2022PDT Partners LLC54,804$1.91M0.2%+59.4%0.112%Search for SEC Filing on Google Icon
8/15/2022Capital Impact Advisors LLC13,835$0.48M0.4%-22.1%0.028%Search for SEC Filing on Google Icon
8/15/2022Point72 Hong Kong Ltd4,795$0.17M0.0%+131.6%0.010%Search for SEC Filing on Google Icon
8/15/2022Cubist Systematic Strategies LLC112,157$3.90M0.0%-20.0%0.229%Search for SEC Filing on Google Icon
8/15/2022Millennium Management LLC82,041$2.85M0.0%-52.7%0.167%Search for SEC Filing on Google Icon
8/15/2022Sei Investments Co.60,625$2.12M0.0%+51.2%0.124%Search for SEC Filing on Google Icon
8/15/2022Quantamental Technologies LLC7,677$0.27M0.1%N/A0.016%Search for SEC Filing on Google Icon
8/15/2022UBS Asset Management Americas Inc.47,885$1.67M0.0%+10.8%0.098%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Amphastar Pharmaceuticals logo
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 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; and Isoproterenol hydrochloride injection for mild or transient episodes of heart block. Further, the company distributes recombinant human insulin active pharmaceutical ingredients (API) 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.
Read More on Amphastar Pharmaceuticals

Today's Range

Now: $29.18
Low: $28.67
High: $29.45

50 Day Range

MA: $28.95
Low: $27.28
High: $31.27

52 Week Range

Now: $29.18
Low: $19.21
High: $44.46

Volume

86,829 shs

Average Volume

402,677 shs

Market Capitalization

$1.41 billion

P/E Ratio

19.58

Dividend Yield

N/A

Beta

0.74

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

Amphastar Pharmaceuticals' top insider shareholders include:
  1. Jack Y Zhang (CEO)
  2. Richard Koo (Director)
  3. Howard Lee (Director)
  4. Richard K Prins (Director)
  5. William J Peters (CFO)
  6. Rong Zhou (EVP)
  7. Floyd F Petersen (Director)
  8. Yakob Liawatidewi (EVP)
  9. Michael A Zasloff (Director)
  10. Diane G Gerst (Director)
  11. William J Peters (CFO)
Learn More about top insider investors at Amphastar Pharmaceuticals.

Who are the major institutional investors of Amphastar Pharmaceuticals?

Amphastar Pharmaceuticals' top institutional shareholders include:
  1. BlackRock Inc. — 14.79%
  2. Federated Hermes Inc. — 6.76%
  3. Vanguard Group Inc. — 5.39%
  4. Dimensional Fund Advisors LP — 3.75%
  5. State Street Corp — 3.17%
  6. Price T Rowe Associates Inc. MD — 1.67%
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:
  1. Nantahala Capital Management LLC
  2. Assenagon Asset Management S.A.
  3. Nuveen Asset Management LLC
  4. Russell Investments Group Ltd.
  5. LSV Asset Management
  6. Parallax Volatility Advisers L.P.
  7. Parallax Volatility Advisers L.P.
  8. Cubist Systematic Strategies LLC
In the last year, company insiders that have sold Amphastar Pharmaceuticals company stock include:
  1. Jack Y Zhang (CEO)
  2. Richard Koo (Director)
  3. Howard Lee (Director)
  4. Richard K Prins (Director)
  5. William J Peters (CFO)
  6. Rong Zhou (EVP)
  7. Floyd F Petersen (Director)
  8. Yakob Liawatidewi (EVP)
  9. Michael A Zasloff (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:
  1. Price T Rowe Associates Inc. MD
  2. Mesirow Institutional Investment Management Inc.
  3. Allspring Global Investments Holdings LLC
  4. Oberweis Asset Management Inc.
  5. Eagle Asset Management Inc.
  6. Mutual of America Capital Management LLC
  7. BlackRock Inc.
  8. AXA S.A.