NYSEMKT: ATNM
Actinium Pharmaceuticals Inc Stock Ownership - Who owns Actinium Pharmaceuticals?

Insider buying vs selling

Have Actinium Pharmaceuticals Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Sandesh SethChief Executive Officer2025-08-18120,900$1.71
$206.74kSell

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Net Insider Buy/Sell (L12M) Ownership

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ATNM Shareholders

What type of owners hold Actinium Pharmaceuticals Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Diane S. Button64.11%20,000,000$34.80MInsider
Sloan Kettering Cancer Center Memorial33.38%10,411,948$18.12MInsider
Vanguard Group Inc4.40%1,371,840$2.39MInstitution
Millennium Management LLC2.13%663,269$1.15MInstitution
Acadian Asset Management LLC1.58%491,943$855.98kInstitution
Blackrock Inc1.50%467,673$813.75kInstitution
Geode Capital Management LLC1.06%329,689$573.66kInstitution
Gagnon Securities LLC0.73%226,622$394.32kInstitution
State Street Corp0.71%222,015$386.31kInstitution
Jane Street Group LLC0.70%218,324$379.88kInstitution

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ATNM vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ATNM15.07%84.93%Net SellingNet Selling
VRCA33.62%66.38%Net Selling
ICCC14.47%21.19%Net BuyingNet Buying
DTIL13.92%86.08%Net SellingNet Selling
IMA75.90%24.10%Net BuyingNet Buying

Actinium Pharmaceuticals Stock Ownership FAQ

Who owns Actinium Pharmaceuticals?

Actinium Pharmaceuticals (NYSEMKT: ATNM) is owned by 17.55% institutional shareholders, 98.94% Actinium Pharmaceuticals insiders, and 0.00% retail investors. Diane S. Button is the largest individual Actinium Pharmaceuticals shareholder, owning 20.00M shares representing 64.11% of the company. Diane S. Button's Actinium Pharmaceuticals shares are currently valued at $35.80M.

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