Updated Jul 16, 2026 · Last SEC filing 2026-07-01
Tectonic Therapeutic, Inc. (TECX) has filed 9 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-01. 3 Form 8-K material event filings were reported by TECX in the last 90 days. 1 Form 144 notices of proposed sale were filed for TECX stock. InsiderAlpha tracks every TECX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0001681087 |
|---|
| Form 4 filings (90d) | 9 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-07-01 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| McNamara Peter | Chief Scientific Officer | S — Open-market sale | 172 | $35.00 | $6K | SEC | |
| McNamara Peter | Chief Scientific Officer | M — Option exercise | 172 | $14.71 | $3K | SEC | |
| REICIN ALISE | Chief Executive Officer | F — Tax withholding / forfeiture | 924 | $30.34 | $28K | SEC | |
| Ruddy Marcella K. | Chief Medical Officer | S — Open-market sale | 1.1K | $30.00 | $32K | SEC | |
| Ruddy Marcella K. | Chief Medical Officer | S — Open-market sale [10b5-1] | 1.0K | $31.05 | $31K | SEC | |
| McNamara Peter | Chief Scientific Officer | S — Open-market sale [10b5-1] | 215 | $35.00 | $8K | SEC | |
| Ruddy Marcella K. | Chief Medical Officer | S — Open-market sale [10b5-1] | 10.0K | $30.00 | $300K | SEC | |
| McNamara Peter | Chief Scientific Officer | M — Option exercise [10b5-1] | 215 | $14.71 | $3K | SEC | |
| McNamara Peter | Chief Scientific Officer | S — Open-market sale [10b5-1] | 6.0K | $30.00 | $181K | SEC | |
| McNamara Peter | Chief Scientific Officer | M — Option exercise [10b5-1] | 2.5K | $2.38 | $6K | SEC | |
| Ruddy Marcella K. | Chief Medical Officer | A — Grant or award | 26.5K | $0.00 | — | SEC | |
| McNamara Peter | Chief Scientific Officer | A — Grant or award [10b5-1] | 23.0K | $0.00 | — | SEC | |
| Lochner Daniel | Chief Financial Officer | A — Grant or award | 26.5K | $0.00 | — | SEC | |
| McNamara Peter | Chief Scientific Officer | S — Open-market sale [10b5-1] | 1.6K | $25.00 | $41K | SEC | |
| Schwabish Marc | Chief Business Officer | A — Grant or award | 19.5K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Tectonic Therapeutic, Inc. (TECX). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| McNamara Peter | 3 | $9K |
| Lochner Daniel | 1 | — |
| Ruddy Marcella K. | 1 | $32K |
| Tipirneni Praveen P. | 1 | — |
| Vitorovic Stefan | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in TECX insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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