NASDAQ: GOSS
Gossamer Bio Inc Stock Ownership - Who owns Gossamer Bio?

Insider buying vs selling

Have Gossamer Bio Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Sandra MilliganDirector2025-08-1926,050$1.92
$50.02kBuy

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Net Insider Buy/Sell (L12M) Ownership

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GOSS Shareholders

What type of owners hold Gossamer Bio Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Octagon Capital Advisors LP8.07%18,350,000$63.49MInstitution
Nea Management Company LLC7.96%18,093,034$62.60MInstitution
Omega Fund V LP5.94%13,506,832$46.73MInsider
Blackrock Inc5.34%12,142,596$42.01MInstitution
Vanguard Group Inc5.02%11,410,792$39.48MInstitution
Arch Venture Management LLC3.54%8,055,916$27.87MInstitution
Fmr LLC3.22%7,315,325$25.31MInstitution
Acadian Asset Management LLC3.14%7,146,022$24.73MInstitution
683 Capital Management LLC2.79%6,340,000$21.94MInstitution
Samsara Biocapital LLC2.70%6,130,268$21.21MInstitution

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GOSS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
GOSS77.95%14.64%Net BuyingNet Buying
PRAX62.65%37.35%Net Selling
AKBA41.23%7.72%Net SellingNet Selling
AVBP76.19%23.81%Net BuyingNet Buying
IMNM91.25%7.71%Net BuyingNet Buying

Gossamer Bio Stock Ownership FAQ

Who owns Gossamer Bio?

Gossamer Bio (NASDAQ: GOSS) is owned by 77.95% institutional shareholders, 14.64% Gossamer Bio insiders, and 7.41% retail investors. Omega Fund V LP is the largest individual Gossamer Bio shareholder, owning 13.51M shares representing 5.94% of the company. Omega Fund V LP's Gossamer Bio shares are currently valued at $46.73M.

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