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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 McNamaraCSci2026-08-2543$36.52
$1.57kSell
Peter McNamaraCSci2026-08-2543$14.71
$632.53Buy
Peter McNamaraCSci2026-08-1243$35.00
$1.51kSell
Peter McNamaraCSci2026-08-1243$14.71
$632.53Buy
Peter McNamaraChief Scientific Officer2026-06-30172$35.00
$6.02kSell
Peter McNamaraChief Scientific Officer2026-06-30172$14.71
$2.53kBuy
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$35.00
$7.53kSell

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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. Springer30.82%6,024,338$168.14MInsider
Bruce Booth28.48%5,567,289$155.38MInsider
Braden Michael Leonard25.09%4,905,068$136.90MInsider
Atlas Venture Fund X LP24.33%4,756,478$132.75MInsider
Clarus Lifesciences III LP22.73%4,443,487$124.02MInsider
Atlas Venture Associates X LP18.98%3,710,052$103.55MInsider
Blackstone Holdings II LP15.15%2,962,325$82.68MInsider
Scott Requadt15.15%2,962,325$82.68MInsider
Atlas Venture Opportunity Fund I LP4.15%810,811$22.63MInsider
Geoffrey MacKay3.98%778,343$21.72MInsider

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TECX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TECX0.04%99.96%Net BuyingNet Selling
DNA0.01%99.99%Net SellingNet Selling
OVID0.08%9.54%Net Buying
MPLT0.05%99.95%Net BuyingNet Buying
ENTX0.01%4.95%Net Buying
View Top Biotech Stocks

Tectonic Therapeutic Stock Ownership FAQ

Who owns Tectonic Therapeutic?

Tectonic Therapeutic (NASDAQ: TECX) is owned by 0.07% institutional shareholders, 198.43% Tectonic Therapeutic insiders, and 0.00% retail investors. Timothy A. Springer is the largest individual Tectonic Therapeutic shareholder, owning 6.02M shares representing 30.82% of the company. Timothy A. Springer's Tectonic Therapeutic shares are currently valued at $163.92M.

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