Tectonic Therapeutic, Inc.
TECX- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001681087
In the last 90 days, Tectonic Therapeutic, Inc. insiders filed 0 open-market purchases and 3 sales; 122 institutions reported holding it in 13F filings for Q2 2026, worth $479.9M in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $9.10K in total
- 3
- 13F holdersQ2 2026, +13 vs. previous quarter
- 122
- 13F valueReported value at the end of Q2 2026
- $479.9M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding TECX, Q2 2026
No superinvestor reported holding TECX at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Tectonic Therapeutic, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 26, 2026 (view filing)4:30 PM ET | Aug 25 | 1 day | McNamara PeterChief Scientific Officer | SSale | −43 | $36.52 | −$1.57K | −0.1%55.3K after | 10b5-1 |
| Aug 14, 2026 (view filing)7:25 PM ET | Aug 12 | 2 days | McNamara PeterChief Scientific Officer | SSale | −43 | $35.00 | −$1.50K | −0.1%55.3K after | 10b5-1 |
| Jul 1, 2026 (view filing)5:19 PM ET | Jun 30 | 1 day | McNamara PeterChief Scientific Officer | SSale | −172 | $35.00 | −$6.02K | −0.3%55.3K after | 10b5-1 |
| May 6, 2026 (view filing) | May 4 | 2 days | Ruddy Marcella K.Chief Medical Officer | SSale | −1.06K | $30.00 | −$31.9K | −1.5%67.7K after | 10b5-1 |
| Apr 3, 2026 (view filing) | Apr 1 | 2 days | Ruddy Marcella K.Chief Medical Officer | SSale | −1.00K | $31.05 | −$31.1K | −1.4%68.7K after | 10b5-1 |
| Mar 9, 2026 (view filing) | Mar 6 | 3 days | Ruddy Marcella K.Chief Medical Officer | SSale | −10.0K | $30.00 | −$300.0K | −12.5%69.7K after | 10b5-1 |
| Mar 9, 2026 (view filing) | Mar 6 | 3 days | McNamara PeterChief Scientific Officer | SSale | −6.26K | $30.17 | −$188.9K | −10.2%55.3K after | 2 lots10b5-1 |
| Mar 5, 2026 (view filing) | Mar 3-4 | 2 days | McNamara PeterChief Scientific Officer | SSale | −3.30K | $23.53 | −$77.6K | −5.3%58.8K after | 2 lots10b5-1 |
| Mar 5, 2026 (view filing) | Feb 11 | 22 days | Reicin AliseChief Executive Officer | PPurchase | +2.50K | $21.10 | +$52.8K | +2.0%127.0K after | Amended |
| Feb 11, 2026 (view filing) | Feb 10 | 1 day | Lochner DanielChief Financial Officer | PPurchase | +6.00K | $21.61 | +$129.7K | +23.0%32.0K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Tectonic Therapeutic, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 2,830,378 | $97.3M | 0.00% | +13,884+0.5% | Added |
| TCG Crossover Management, LLC | 1,204,891 | $41.4M | 1.00% | 00.0% | Unchanged |
| Standard Life Aberdeen plc | 1,141,824 | $39.3M | 0.06% | 00.0% | Unchanged |
| BlackRock, Inc. | 862,592 | $29.7M | 0.00% | +2,240+0.3% | Added |
| First Light Asset Management, LLC | 800,726 | $27.5M | 1.67% | +152,983+23.6% | Added |
| Baker Bros. Advisors LP | 607,788 | $20.9M | 0.10% | 00.0% | Unchanged |
| 5AM Venture Management, LLC | 606,660 | $20.9M | 7.24% | 00.0% | Unchanged |
| Braidwell LP | 596,900 | $20.5M | 0.76% | −250,251−29.5% | Reduced |
| Vanguard Capital Management LLC | 488,805 | $16.8M | 0.00% | +15,273+3.2% | Added |
| Vestal Point Capital, LP | 425,000 | $14.6M | 0.34% | +97,000+29.6% | Added |