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 Treasurer2023-09-0621,250$20.23
William J. PetersCFO EVP Treasurer2023-09-0610,000$19.79
William J. PetersCFO EVP Treasurer2023-09-0659$52.26
William J. PetersCFO EVP Treasurer2023-09-0660,684$51.75
William J. PetersCFO EVP Treasurer2023-09-0625,250$13.03
Yakob LiawatidewiEVP Corp Admin Center2023-08-2828,816$53.13
Yakob LiawatidewiEVP Corp Admin Center2023-08-2820,000$13.03
Yakob LiawatidewiEVP Corp Admin Center2023-08-285,497$20.23
Yakob LiawatidewiEVP Corp Admin Center2023-08-283,319$16.96
Richard K. PrinsDirector2023-08-182,000$52.50

1 of 9

AMPH insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when AMPH insiders and whales buy or sell their stock.

AMPH Shareholders

What type of owners hold Amphastar Pharmaceuticals Inc stock?
Jack Y. Zhang20.31%9,920,312$451.47MInsider
Mary Z. Luo16.17%7,900,567$359.55MInsider
Applied Physics Chemistry Laboratories Inc15.00%7,327,679$333.48MInsider
Blackrock Inc12.46%6,088,227$277.08MInstitution
Federated Hermes Inc7.02%3,428,930$156.05MInstitution
Vanguard Group Inc5.68%2,773,609$126.23MInstitution
Dimensional Fund Advisors LP3.95%1,930,615$87.86MInstitution
Neuberger Berman Group LLC3.05%1,490,284$67.82MInstitution
State Street Corp2.85%1,394,504$63.46MInstitution
Fuller Thaler Asset Management Inc2.62%1,279,495$58.23MInstitution

1 of 3

AMPH vs Pharmaceutical Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
AMPH54.36%45.64%Net SellingNet Selling
DVAX71.91%28.09%Net SellingNet Selling
TLRY7.66%2.17%Net BuyingNet Buying

Amphastar Pharmaceuticals Stock Ownership FAQ

Who owns Amphastar Pharmaceuticals?

Amphastar Pharmaceuticals (NASDAQ: AMPH) is owned by 64.27% institutional shareholders, 53.95% Amphastar Pharmaceuticals insiders, and 0.00% retail investors. Jack Y. Zhang is the largest individual Amphastar Pharmaceuticals shareholder, owning 9.92M shares representing 20.31% of the company. Jack Y. Zhang's Amphastar Pharmaceuticals shares are currently valued at $451.47M.

If you're new to stock investing, here's how to buy Amphastar Pharmaceuticals stock.
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.