---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-193445"
form_type: "8-K"
ticker: null
cik: "0001764974"
company_name: "Turnstone Biologics Corp."
filed_at: "2023-07-25T23:59:59+00:00"
generated_at: "2026-06-13T03:15:21.965566+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Turnstone Biologics adopts amended charter and bylaws effective upon IPO closing

## Summary
- Filed amended and restated certificate of incorporation with Delaware Secretary of State on July 25, 2023.
- Adopted amended and restated bylaws effective immediately prior to IPO closing on same date.
- Both documents were previously approved by board and stockholders in connection with the IPO.
- Company's common stock trades on Nasdaq under ticker TSBX as an emerging growth company.

## SEC filing metadata
- accession: 0001193125-23-193445
- form_type: 8-K
- cik: 0001764974
- company_name: Turnstone Biologics Corp.
- filed_at: 2023-07-25T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1764974/000119312523193445/0001193125-23-193445-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1764974/000119312523193445/d878456d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-193445
- JSON: https://secwatch.observer/filing/0001193125-23-193445.json
- Plain text: https://secwatch.observer/filing/0001193125-23-193445.txt

## Key facts
- Governance Changes
  Turnstone Biologics Corp.: Amended and restated certificate of incorporation in connection with IPO (effective 2023-07-25).
  - Change: charter amendment
  - Effective: 2023-07-25
  source text: Amendment and Restatement of Certificate of Incorporation In connection with the closing of the initial public offering of shares of common stock (the “IPO”) of Turnstone Biologics Corp. (the “Company”) on July 25, 2023, the Company filed an amended and restated certificate of incorporation (the “Restated Certificate”) with the Secretary of State of the State of Delaware.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1764974/000119312523193445/0001193125-23-193445-index.htm
- Governance Changes
  Turnstone Biologics Corp.: Adopted amended and restated bylaws in connection with IPO (effective 2023-07-25).
  - Change: bylaw amendment
  - Effective: 2023-07-25
  source text: Amendment and Restatement of Bylaws Effective as of July 25, 2023, the Company adopted amended and restated bylaws (the “Restated Bylaws”) in connection with the closing of the IPO.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1764974/000119312523193445/0001193125-23-193445-index.htm

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