---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-23-005439"
form_type: "8-K"
ticker: null
cik: "0001733294"
company_name: "Generation Bio Co."
filed_at: "2023-04-04T23:59:59+00:00"
generated_at: "2026-06-17T06:32:01.215666+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Generation Bio amends bylaws for universal proxy rules and technical updates

## Summary
- Eliminated requirement to display stockholder list during in-person meetings.
- Authorized adoption of emergency bylaws altering quorum and meeting procedures.
- Enhanced disclosure requirements for stockholder director nominations per SEC Rule 14a-19.
- Requires nominating stockholders to provide evidence of 67% voting power solicitation by 5 business days before meeting.
- Non-compliance with Rule 14a-19 allows company to disregard proposed nominees and solicited proxies.

## SEC filing metadata
- accession: 0001558370-23-005439
- form_type: 8-K
- cik: 0001733294
- company_name: Generation Bio Co.
- filed_at: 2023-04-04T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1733294/000155837023005439/0001558370-23-005439-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1733294/000155837023005439/gbio-20230331x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-23-005439
- JSON: https://secwatch.observer/filing/0001558370-23-005439.json
- Plain text: https://secwatch.observer/filing/0001558370-23-005439.txt

## Key facts
- Governance Changes
  Generation Bio Co.: Amended and restated bylaws to eliminate requirement for stockholder list at meeting, address adjournment due to technical failure, authorize emergency bylaws, and revise proxy rules for director nominations (effective 2023-03-31).
  - Change: bylaw amendment
  - Effective: 2023-03-31
  source text: On March 31, 2023, the Board of Directors (the “Board”) of Generation Bio Co. (the “Company”) approved an amendment and restatement of the Company’s Amended and Restated Bylaws (as so amended and restated, the “Amended and Restated Bylaws”), effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1733294/000155837023005439/0001558370-23-005439-index.htm

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