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NASDAQ: TECX
Tectonic Therapeutic Inc Stock Ownership - Who owns Tectonic Therapeutic?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Tectonic Therapeutic Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Peter McNamaraChief Scientific Officer2026-06-30172$14.71
$2.53kBuy
Peter McNamaraChief Scientific Officer2026-06-30172$35.00
$6.02kSell
Alise ReicinChief Executive Officer2026-06-20924$30.34
$28.03kSell
Marcella K. RuddyChief Medical Officer2026-05-041,065$30.00
$31.95kSell
Marcella K. RuddyChief Medical Officer2026-04-011,000$31.05
$31.05kSell
Peter McNamaraChief Scientific Officer2026-03-06215$14.71
$3.16kBuy
Peter McNamaraChief Scientific Officer2026-03-062,500$2.38
$5.95kBuy
Peter McNamaraChief Scientific Officer2026-03-066,047$30.00
$181.41kSell
Peter McNamaraChief Scientific Officer2026-03-06215$35.00
$7.53kSell
Marcella K. RuddyChief Medical Officer2026-03-0610,000$30.00
$300.00kSell

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Net Insider Buy/Sell (L12M) Ownership

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TECX Shareholders

What type of owners hold Tectonic Therapeutic Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Timothy A. Springer31.93%6,024,338$193.20MInsider
Bruce Booth29.50%5,567,289$178.54MInsider
Braden Michael Leonard26.00%4,905,068$157.31MInsider
Atlas Venture Fund X LP25.21%4,756,478$152.54MInsider
Clarus Lifesciences III LP23.55%4,443,487$142.50MInsider
Atlas Venture Associates X LP19.66%3,710,052$118.98MInsider
Scott Requadt15.70%2,962,325$95.00MInsider
Blackstone Holdings II LP15.70%2,962,325$95.00MInsider
Fmr LLC14.93%2,816,494$90.32MInstitution
Tcg Crossover Management LLC6.39%1,204,891$38.64MInstitution

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TECX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TECX26.26%73.74%Net BuyingNet Selling
SPRY47.21%52.79%Net SellingNet Selling
ALLO53.35%22.59%Net Selling
CRMD52.44%9.73%Net Selling
FDMT80.12%19.88%Net SellingNet Selling
View Top Biotech Stocks

Tectonic Therapeutic Stock Ownership FAQ

Who owns Tectonic Therapeutic?

Tectonic Therapeutic (NASDAQ: TECX) is owned by 73.20% institutional shareholders, 205.59% Tectonic Therapeutic insiders, and 0.00% retail investors. Timothy A. Springer is the largest individual Tectonic Therapeutic shareholder, owning 6.02M shares representing 31.93% of the company. Timothy A. Springer's Tectonic Therapeutic shares are currently valued at $197.60M.

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