Over 12 months, Tectonic Therapeutic, Inc. saw more selling than buying from its insiders — purchases of about $235,000 against sales of $651,000.
The largest purchase came from Lochner Daniel (CFO), about $130,000. Notably, at least one C-suite executive was among the buyers.
Zooming out by quarter: 3 quarters in a row of net selling by insiders. Insiders bought in 3 of the last 7 full quarters. Big money check: 123 institutions held TECX as of Q2 2026, and more funds bought than sold.
| Filed | Insider | Role | Type | Shares | Price | Value | Source |
|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | McNamara Peter | Executive Officer | Sell | 536 | $23.04 | $12K | SEC |
| Aug 26, 2026 | McNamara Peter | Executive Officer | Sell | 43 | $36.52 | $2K | SEC |
| Aug 14, 2026 | McNamara Peter | Executive Officer | Sell | 43 | $35.00 | $2K | SEC |
| Jul 1, 2026 | McNamara Peter | Executive Officer | Sell | 172 | $35.00 | $6K | SEC |
| May 6, 2026 | Ruddy Marcella K. | Executive Officer | Sell | 1,065 | $30.00 | $32K | SEC |
| Apr 3, 2026 | Ruddy Marcella K. | Executive Officer | Sell | 1,000 | $31.05 | $31K | SEC |
| Mar 9, 2026 | Ruddy Marcella K. | Executive Officer | Sell | 10,000 | $30.00 | $300K | SEC |
| Mar 9, 2026 | McNamara Peter | Executive Officer | Sell | 215 | $35.00 | $8K | SEC |
| Mar 9, 2026 | McNamara Peter | Executive Officer | Sell | 6,047 | $30.00 | $181K | SEC |
| Mar 5, 2026 | McNamara Peter | Executive Officer | Sell | 1,649 | $22.06 | $36K | SEC |
| Mar 5, 2026 | McNamara Peter | Executive Officer | Sell | 1,650 | $25.00 | $41K | SEC |
| Mar 5, 2026 | REICIN ALISE | CEO | Buy | 2,500 | $21.10 | $53K | SEC |
| Feb 12, 2026 | REICIN ALISE | CEO | Buy | 2,500 | $21.10 | $53K | SEC |
| Feb 11, 2026 | Lochner Daniel | CFO | Buy | 6,000 | $21.61 | $130K | SEC |
| Apr 11, 2025 | SPRINGER TIMOTHY A | Director | Buy | 857 | $15.23 | $13K | SEC |
In the last 12 months Tectonic Therapeutic, Inc. insiders made open-market purchases worth about $235,000 and sales worth about $651,000. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
The most recent open-market insider trade in TECX was filed on 2026-10-02.
123 investment managers reported holding TECX in SEC Form 13F filings for Q2 2026.
No congressional trades in TECX were reported in the past two years. The full list is free on CapitalSnitch.
Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1). Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).