---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-185087"
form_type: "8-K"
ticker: "TECX"
cik: "0001681087"
company_name: "Tectonic Therapeutic, Inc."
filed_at: "2022-06-29T23:59:59+00:00"
generated_at: "2026-06-24T22:24:41.953928+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# AVROBIO CSO Christopher Mason to depart June 30; option exercise period extended to 12 months

## Summary
- Chief Scientific Officer Christopher Mason's employment ends June 30, 2022 per prior agreement.
- Compensation committee extended post-termination exercise period for his time-based stock options and equity awards from 3 to 12 months.
- Company also updated its corporate slide presentation for investor meetings; no new specific data disclosed.

## SEC filing metadata
- accession: 0001193125-22-185087
- form_type: 8-K
- ticker: TECX
- cik: 0001681087
- company_name: Tectonic Therapeutic, Inc.
- filed_at: 2022-06-29T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1681087/000119312522185087/0001193125-22-185087-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1681087/000119312522185087/d374875d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-185087
- JSON: https://secwatch.observer/filing/0001193125-22-185087.json
- Plain text: https://secwatch.observer/filing/0001193125-22-185087.txt

## Key facts
- Executive change
  Christopher Mason was terminated as Chief Scientific Officer at Tectonic Therapeutic, Inc..
  - Action: terminated
  - Role: Chief Scientific Officer
  source text: As previously disclosed, Dr. Mason’s employment with the Company will terminate on June 30, 2022 pursuant to the terms of his employment agreement, as amended.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1681087/000119312522185087/0001193125-22-185087-index.htm

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