Tectonic Therapeutic, Inc. (TECX) Institutional Ownership & Insider Trading

123 institutions reported holding Tectonic Therapeutic, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 13 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

TECXTectonic Therapeutic, Inc.Follow TECX — free

Biotechnology · Healthcare

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Market cap: 392.4M
P/E TTM: —
Dividend yield: 0.0%
52-week: —
Next earnings: 5 Nov, in 12 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

123 institutions held 71.4% of the shares. Across filers that reported both quarters, shares held changed +1.1%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	123	14	+1.1%	33	23	39	8
Mar 26	111	14	+0.7%	29	25	34	17
Dec 25	105	14	+15.1%	30	27	24	21
Sep 25	99	12	-0.0%	27	28	19	10
Jun 25	81	12	+7.9%	33	18	13	14
Mar 25	76	11	+43.5%	28	28	11	22
Dec 24	70	8	+6.5%	19	22	15	7
Sep 24	52	7	+32.7%	11	16	10	4

Tectonic Therapeutic, Inc. — questions

Who owns Tectonic Therapeutic, Inc. stock?: 123 institutions reported Tectonic Therapeutic, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: FMR LLC (14.5%), TCG Crossover Management, LLC (6.2%), Aberdeen Group plc (5.8%).
Are Tectonic Therapeutic, Inc. insiders buying or selling?: 13 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Tectonic Therapeutic, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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