---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-192766"
form_type: "8-K"
ticker: "SANA"
cik: "0001770121"
company_name: "Sana Biotechnology, Inc."
filed_at: "2025-08-29T23:59:59+00:00"
generated_at: "2026-05-17T09:15:35.536126+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Sana Biotechnology director Mary Agnes Wilderotter resigns effective Aug 29

## Summary
- Mary Agnes Wilderotter resigned as director and chair of Nominating and Corporate Governance Committee, effective Aug 29, 2025.
- She also resigned from the Audit Committee. Resignation not due to any disagreement with Sana's operations, policies, or practices.
- No replacement or further board changes announced in the filing.

## SEC filing metadata
- accession: 0001193125-25-192766
- form_type: 8-K
- ticker: SANA
- cik: 0001770121
- company_name: Sana Biotechnology, Inc.
- filed_at: 2025-08-29T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1770121/000119312525192766/0001193125-25-192766-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1770121/000119312525192766/sana-20250828.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-192766
- JSON: https://secwatch.observer/filing/0001193125-25-192766.json
- Plain text: https://secwatch.observer/filing/0001193125-25-192766.txt

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