NASDAQ: SION
Sionna Therapeutics Inc Stock Ownership - Who owns Sionna Therapeutics?

Insider buying vs selling

Have Sionna Therapeutics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Atlas Venture Fund XI LP10% Owner2025-02-1060,000$18.00
$1.08MBuy
Bruce BoothDirector2025-02-1060,000$18.00
$1.08MBuy
Orbimed Advisors LLCDirector2025-02-10550,000$18.00
$9.90MBuy
Ra Capital Management LPDirector2025-02-101,022,586$18.00
$18.41MBuy
Ra Capital Management LPDirector2025-02-10102,414$18.00
$1.84MBuy
Peter A. ThompsonDirector2025-02-10550,000$18.00
$9.90MBuy
Tpg GP A LLC10% Owner2025-02-101,125,000$18.00
$20.25MBuy

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Net Insider Buy/Sell (L12M) Ownership

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SION Shareholders

What type of owners hold Sionna Therapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Ra Capital Management LP23.67%10,445,322$177.47MInstitution
Tpg GP A LLC15.15%6,684,962$113.58MInstitution
Tpg GP A LLC15.15%6,684,962$113.58MInsider
Peter A. Thompson8.40%3,704,959$62.95MInsider
Orbimed Advisors LLC8.40%3,704,959$62.95MInsider
Orbimed Advisors LLC8.40%3,704,959$62.95MInstitution
Atlas Venture Life Science Advisors LLC8.37%3,694,020$62.76MInstitution
Bruce Booth8.37%3,694,020$62.76MInsider
Atlas Venture Fund XI LP8.37%3,694,020$62.76MInsider
Viking Global Investors LP6.69%2,952,754$50.17MInstitution

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SION vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
SION62.87%37.13%Net Buying
VIR63.04%36.96%Net SellingNet Selling
PHAR0.01%0.00%
PHAT66.31%33.69%Net BuyingNet Buying
IMTX75.16%0.00%

Sionna Therapeutics Stock Ownership FAQ

Who owns Sionna Therapeutics?

Sionna Therapeutics (NASDAQ: SION) is owned by 94.03% institutional shareholders, 55.54% Sionna Therapeutics insiders, and 0.00% retail investors. Tpg GP A LLC is the largest individual Sionna Therapeutics shareholder, owning 6.68M shares representing 15.15% of the company. Tpg GP A LLC's Sionna Therapeutics shares are currently valued at $109.50M.

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