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
InsidersInstitutions
What insiders are doing in this stock (Form 4).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Mar 6, 2026 | Ruddy Marcella K. Executive | Sell | Common Stock | $300.0K | -10K -12.54% | 69,747 0.36% of shares | medium |
| Mar 6, 2026 | McNamara Peter Executive | Sell | Common Stock | $181.4K | -6K -9.83% | 55,500 0.28% of shares | medium |
| Feb 10, 2026 | Lochner Daniel Executive | Buy | Common Stock | $129.7K | +6K +23.04% | 32,044 0.16% of shares | medium |
| Feb 4, 2026 | Reicin Alise CEO | Other | Common Stock | $95.3K | -4K -1.72% | 235,047 1.20% of shares | low |
| Feb 11, 2026 | Reicin Alise CEO | Buy | Common Stock | $52.8K | +3K +1.06% | 237,547 1.22% of shares | low |
| Feb 11, 2026 | Reicin Alise CEO | Buy | Common Stock | $52.8K | +3K +2.01% | 127,030 0.65% of shares | low |
| Feb 4, 2026 | Lochner Daniel Executive | Other | Common Stock | $48.2K | -2K -7.39% | 26,044 0.13% of shares | low |
| Feb 4, 2026 | Ruddy Marcella K. Executive | Other | Common Stock | $47.9K | -2K -3.73% | 53,247 0.27% 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 |