NASDAQ: IBIO
Ibio Inc Stock Ownership - Who owns Ibio?

Insider buying vs selling

Have Ibio Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Martin BrennerChief Executive Officer and Chief Scientific Officer2026-03-1912,336$2.02
$24.92kBuy
Felipe DuranChief Financial Officer2026-03-1924,835$2.02
$50.14kBuy

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Net Insider Buy/Sell (L12M) Ownership

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IBIO Shareholders

What type of owners hold Ibio Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
E. Gerald Kay42.78%14,776,201$32.66MInsider
Eastern Capital Ltd24.98%8,629,693$19.07MInsider
Carl Desantis16.65%5,751,143$12.71MInsider
John D. McKey Jr.6.62%2,288,133$5.06MInsider
Ecor1 Capital LLC6.45%2,228,000$4.92MInstitution
Affinity Asset Advisors LLC5.96%2,057,200$4.55MInstitution
Logos Global Management LP5.79%2,000,000$4.42MInstitution
Frazier Life Sciences Management LP5.66%1,953,467$4.32MInstitution
Thomas Francis 3rd Isett3.69%1,275,000$2.82MInsider
Balyasny Asset Management LP3.17%1,096,179$2.42MInstitution

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IBIO vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IBIO32.09%67.91%Net BuyingNet Buying
XBIT7.53%46.67%
MNOV10.68%88.78%
ATHE0.00%0.00%
NRXP9.51%90.49%

Ibio Stock Ownership FAQ

Who owns Ibio?

Ibio (NASDAQ: IBIO) is owned by 47.30% institutional shareholders, 100.12% Ibio insiders, and 0.00% retail investors. E. Gerald Kay is the largest individual Ibio shareholder, owning 14.78M shares representing 42.78% of the company. E. Gerald Kay's Ibio shares are currently valued at $30.73M.

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