Companies / Tectonic Therapeutic, Inc.
Tectonic Therapeutic, Inc.
Nasdaq: TECXCIK 1681087WATERTOWN, MA
Financials
Ownership
19.5M shares outstanding · as of Jul 31, 2026
Ownership
| Insiders | 2.90% | 566,868 |
| 10%+ / strategic | 5.84% | 1,141,824 |
| Institutions | 64.57% | 12,623,223 |
| Public float | 26.69% | 5,217,451 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 8
View all →| Insider | % of shares | Shares |
|---|---|---|
Reicin AliseCEOChief Executive Officer · Director | 2.24% | 438,577 |
Ruddy Marcella K.Chief Medical Officer | 0.36% | 69,747 |
Lochner DanielChief Financial Officer | 0.30% | 58,544 |
McNamara PeterFormerChief Scientific Officer | 0.28% | 55,285 |
Schwabish MarcFormerChief Business Officer | 0.23% | 45,314 |
Donenberg Phillip B.Director | — | — |
Nader FrancoisDirector | — | — |
Springer Timothy aDirector · 10% owner | — | — |
Institutional holders 111
View all →| Holder | Value | % of shares |
|---|---|---|
| $58.56M | 14.36% | |
| $29.65M | 4.41% | |
| $23.82M | 5.84% | |
| $19.35M | 4.74% | |
| $18.79M | 3.11% | |
| $12.65M | 3.10% | |
| $12.51M | 3.07% | |
| $10.27M | 2.52% | |
| $10.04M | 3.27% | |
| $8.29M | 1.37% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Orbimed Advisors LLC 13F manager | Trim | Common Stock | $-10.76M | -348K -60.56% | 226,600 1.16% of shares | medium |
| Q3 2025 as of | Farallon Capital Management LLC 13F manager | New | Common Stock | $10.04M | +640K | 640,000 3.27% of shares | medium |
| Q4 2025 as of | Farallon Capital Management LLC 13F manager | Exit | Common Stock | $-10.04M | -640K -100.00% | 0 | medium |
| Q1 2026 as of | Baker Bros. Advisors LP 13F manager | Trim | Common Stock | $-9.14M | -296K -32.72% | 607,788 3.11% of shares | medium |
| Q1 2026 as of | Millennium Management LLC 13F manager | Trim | Common Stock | $-7.49M | -242K -80.60% | 58,348 0.30% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Add | Common Stock | $6.14M | +199K +642.59% | 229,595 1.17% of shares | medium |
| Q1 2026 as of | Sectoral Asset Management Inc 13F manager | Trim | Common Stock | $-764.6K | -23K -54.90% | 19,059 0.10% of shares | low |
| Q4 2024 as of | Barclays PLC 13F manager | Add | Common Stock | $671.0K | +15K +1008.54% | 15,974 0.08% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Aberdeen Group plc | Passive13G | — |
| TCG Crossover GP II, LLC | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| TECX | Common Stock | 878972108 |