WallStreetZenWallStreetZen

NASDAQ: AMPH
Amphastar Pharmaceuticals Inc Stock Ownership - Who owns Amphastar Pharmaceuticals?

Insider buying vs selling

Have Amphastar Pharmaceuticals Inc insiders been buying or selling?
Buy
Sell
NameRoleDateSharesPriceValue
William J. PetersCFO EVP TREASURER2024-06-27635$41.30
$26.22kSell
William J. PetersCFO EVP TREASURER2024-06-272,961$40.85
$120.95kSell
Floyd F. PetersenDirector2024-06-103,000$41.40
$124.20kSell
Jack Y. ZhangCEO CHIEF SCIENTIFIC OFFICER2024-06-10100,000$14.69
$1.47MBuy
Howard LeeDirector2024-06-05579$42.04
$24.34kSell
Yakob LiawatidewiEVP CORP ADMIN CENTER2024-06-04272$42.22
$11.48kSell
Floyd F. PetersenDirector2024-06-03500$42.65
$21.33kSell
William J. PetersCFO EVP TREASURER2024-05-19387$43.48
$16.83kSell
Floyd F. PetersenDirector2024-05-01500$41.67
$20.84kSell
Floyd F. PetersenDirector2024-04-01500$43.43
$21.71kSell

1 of 9

AMPH insiders have bought 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?
Institutional
Insider
Retail
NameHoldSharesValueType
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

1 of 3

AMPH vs Pharmaceutical Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
AMPH49.18%50.82%Net BuyingNet Buying
EVO2.79%0.00%
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.

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.