Amphastar Pharmaceuticals Inc Stock Ownership - Who owns Amphastar Pharmaceuticals?

Insider buying vs selling

Have Amphastar Pharmaceuticals Inc insiders been buying or selling?
William J. PetersCFO EVP TREASURER2024-06-27635$41.30
William J. PetersCFO EVP TREASURER2024-06-272,961$40.85
Floyd F. PetersenDirector2024-06-103,000$41.40
Jack Y. ZhangCEO CHIEF SCIENTIFIC OFFICER2024-06-10100,000$14.69
Howard LeeDirector2024-06-05579$42.04
Yakob LiawatidewiEVP CORP ADMIN CENTER2024-06-04272$42.22
Floyd F. PetersenDirector2024-06-03500$42.65
William J. PetersCFO EVP TREASURER2024-05-19387$43.48
Floyd F. PetersenDirector2024-05-01500$41.67
Floyd F. PetersenDirector2024-04-01500$43.43

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Net Insider Buy/Sell (L12M) Ownership

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AMPH Shareholders

What type of owners hold Amphastar Pharmaceuticals Inc stock?
Jack Y. Zhang35.17%17,197,827$665.56MInsider
Mary Z. Luo18.28%8,941,010$346.02MInsider
Applied Physics Chemistry Laboratories Inc14.98%7,327,679$283.58MInsider
Blackrock Inc12.43%6,079,042$235.26MInstitution
Vanguard Group Inc5.59%2,734,040$105.81MInstitution
Federated Hermes Inc4.25%2,077,101$80.38MInstitution
Neuberger Berman Group LLC3.39%1,659,817$64.23MInstitution
State Street Corp3.10%1,514,249$58.60MInstitution
Fuller Thaler Asset Management Inc2.61%1,274,178$49.31MInstitution
Dimensional Fund Advisors LP2.42%1,183,830$45.81MInstitution

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AMPH vs Pharmaceutical Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
AMPH49.18%50.82%Net BuyingNet Buying
AVDL72.86%13.53%Net Selling
SUPN45.07%54.93%Net Selling
AMRX25.00%75.00%Net SellingNet Selling

Amphastar Pharmaceuticals Stock Ownership FAQ

Who owns Amphastar Pharmaceuticals?

Amphastar Pharmaceuticals (NASDAQ: AMPH) is owned by 68.58% institutional shareholders, 70.88% Amphastar Pharmaceuticals insiders, and 0.00% retail investors. Jack Y. Zhang is the largest individual Amphastar Pharmaceuticals shareholder, owning 17.20M shares representing 35.17% of the company. Jack Y. Zhang's Amphastar Pharmaceuticals shares are currently valued at $665.56M.

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