---
schema_version: "secwatch.filing_event.v1"
accession: "0001564590-21-047101"
form_type: "8-K"
ticker: "SANA"
cik: "0001770121"
company_name: "Sana Biotechnology, Inc."
filed_at: "2021-09-03T23:59:59+00:00"
generated_at: "2026-06-29T05:52:21.094572+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Director Geoffrey von Maltzahn resigns from Sana Biotechnology board

## Summary
- Geoffrey von Maltzahn, Ph.D. resigned from the Board effective September 1, 2021.
- Resignation is not due to any disagreement with Sana on operations, policies, or practices.
- No replacement director has been named as of the filing date.

## SEC filing metadata
- accession: 0001564590-21-047101
- form_type: 8-K
- ticker: SANA
- cik: 0001770121
- company_name: Sana Biotechnology, Inc.
- filed_at: 2021-09-03T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1770121/000156459021047101/0001564590-21-047101-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1770121/000156459021047101/sana-8k_20210901.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001564590-21-047101
- JSON: https://secwatch.observer/filing/0001564590-21-047101.json
- Plain text: https://secwatch.observer/filing/0001564590-21-047101.txt

## Key facts
- Executive change
  Geoffrey von Maltzahn resigned as Director at Sana Biotechnology, Inc..
  - Action: resigned
  - Role: Director
  source text: On September 1, 2021, Geoffrey von Maltzahn, Ph.D. notified Sana Biotechnology, Inc. (“Sana”) of his decision to resign from the Board of Directors of Sana (the “Board”), effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1770121/000156459021047101/0001564590-21-047101-index.htm

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