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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 Officer2026-03-06215$35.00
$7.53kSell
Peter McNamaraChief Scientific Officer2026-03-066,047$30.00
$181.41kSell
Marcella K. RuddyChief Medical Officer2026-03-0610,000$30.00
$300.00kSell
Peter McNamaraChief Scientific Officer2026-03-06215$14.71
$3.16kBuy
Peter McNamaraChief Scientific Officer2026-03-062,500$2.38
$5.95kBuy
Peter McNamaraChief Scientific Officer2026-03-041,650$25.00
$41.25kSell
Peter McNamaraChief Scientific Officer2026-03-031,649$22.06
$36.38kSell
Alise ReicinChief Executive Officer2026-02-112,500$21.10
$52.75kBuy
Alise ReicinChief Executive Officer2026-02-112,500$21.10
$52.75kBuy
Daniel LochnerChief Financial Officer2026-02-106,000$21.61
$129.66kBuy

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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. Springer32.08%6,024,338$180.01MInsider
Bruce Booth29.65%5,567,289$166.35MInsider
Braden Michael Leonard26.12%4,905,068$146.56MInsider
Atlas Venture Fund X LP25.33%4,756,478$142.12MInsider
Clarus Lifesciences III LP23.66%4,443,487$132.77MInsider
Atlas Venture Associates X LP19.76%3,710,052$110.86MInsider
Blackstone Holdings II LP15.78%2,962,325$88.51MInsider
Scott Requadt15.78%2,962,325$88.51MInsider
Fmr LLC14.95%2,807,442$83.89MInstitution
Aberdeen Group PLC6.08%1,141,824$34.12MInstitution

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TECX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TECX26.30%73.70%Net BuyingNet Selling
IVA48.83%0.00%
REPL65.51%34.49%Net Selling
MGTX57.65%42.35%Net SellingNet Selling
ZVRA64.97%21.81%Net SellingNet Selling
View Top Biotech Stocks

Tectonic Therapeutic Stock Ownership FAQ

Who owns Tectonic Therapeutic?

Tectonic Therapeutic (NASDAQ: TECX) is owned by 73.57% institutional shareholders, 206.21% Tectonic Therapeutic insiders, and 0.00% retail investors. Timothy A. Springer is the largest individual Tectonic Therapeutic shareholder, owning 6.02M shares representing 32.08% of the company. Timothy A. Springer's Tectonic Therapeutic shares are currently valued at $180.01M.

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