---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-012552"
form_type: "8-K"
ticker: "DNA"
cik: "0001830214"
company_name: "Ginkgo Bioworks Holdings, Inc."
filed_at: "2026-02-27T23:59:59+00:00"
generated_at: "2026-05-15T23:10:23.482008+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Ginkgo Bioworks sells Biosecurity segment to Tower Biosecurity for 20% stake

## Summary
- Ginkgo contributes all equity of Ginkgo Biosecurity, LLC (its Biosecurity segment) to Tower Biosecurity.
- In exchange, Ginkgo receives shares representing ~20% of Tower Biosecurity on a fully diluted basis.
- Transaction expected to close in first half of 2026, subject to customary closing conditions.
- Seller is Ginkgo Bioworks, Inc.; parent Ginkgo Bioworks Holdings is party for limited purposes.
- No cash purchase price disclosed; consideration is solely an equity stake in the acquirer.

## SEC filing metadata
- accession: 0001628280-26-012552
- form_type: 8-K
- ticker: DNA
- cik: 0001830214
- company_name: Ginkgo Bioworks Holdings, Inc.
- filed_at: 2026-02-27T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1830214/000162828026012552/0001628280-26-012552-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1830214/000162828026012552/dna-20260226.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-012552
- JSON: https://secwatch.observer/filing/0001628280-26-012552.json
- Plain text: https://secwatch.observer/filing/0001628280-26-012552.txt

## Key facts
- Material Agreements
  Ginkgo Bioworks Holdings, Inc. entered into Stock Purchase Agreement with Tower Biosecurity, Inc. (effective 2026-02-26).
  - Action: entry
  - Agreement: asset purchase
  - Counterparty: Tower Biosecurity, Inc.
  - Effective: 2026-02-26
  source text: On February 26, 2026, Ginkgo Bioworks, Inc. (the “Seller”), a wholly owned subsidiary Ginkgo Bioworks Holdings, Inc. (the “Company”), entered into a Stock Purchase Agreement (the “Purchase Agreement”) with Tower Biosecurity, Inc. (the “Purchaser”) and Ginkgo Biosecurity, LLC (“Biosecurity”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1830214/000162828026012552/0001628280-26-012552-index.htm

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