---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-066964"
form_type: "8-K"
ticker: "TECX"
cik: "0001681087"
company_name: "Tectonic Therapeutic, Inc."
filed_at: "2026-02-24T23:59:59+00:00"
generated_at: "2026-05-16T00:50:00.247138+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Tectonic appoints François Nader as independent director and Chair; McGuire steps down

## Summary
- François Nader, M.D., appointed to board effective Apr 1, 2026; assumes Chair role same date.
- Current Chair Terry McGuire resigns as Chair Apr 1, remains board member until June 2026 annual meeting.
- Nader is independent director at Moderna (MRNA); led multiple biotech acquisitions (Acceleron, Alexion).
- Company posted presentation on TX2100 for HHT and bleeding disorders (no new clinical data).

## SEC filing metadata
- accession: 0001193125-26-066964
- form_type: 8-K
- ticker: TECX
- cik: 0001681087
- company_name: Tectonic Therapeutic, Inc.
- filed_at: 2026-02-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1681087/000119312526066964/0001193125-26-066964-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1681087/000119312526066964/d50095d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-066964
- JSON: https://secwatch.observer/filing/0001193125-26-066964.json
- Plain text: https://secwatch.observer/filing/0001193125-26-066964.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.