---
schema_version: "secwatch.filing_event.v1"
accession: "0001818794-26-000005"
form_type: "8-K"
ticker: "DYN"
cik: "0001818794"
company_name: "Dyne Therapeutics, Inc."
filed_at: "2026-06-22T20:15:29+00:00"
generated_at: "2026-06-22T20:19:31.078980+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Barry E. Greene elected to Dyne Therapeutics board; receives option for 57,463 shares

## Summary
- Elected as Class I director effective June 22, 2026, to serve until 2027 annual meeting.
- Received option for 57,463 shares at $20.87 per share, vesting monthly over 3 years.
- Will receive $45,000 annual cash retainer and standard equity grants per non-employee director program.
- No committee appointments; board determined independent per Nasdaq rules.

## SEC filing metadata
- accession: 0001818794-26-000005
- form_type: 8-K
- ticker: DYN
- cik: 0001818794
- company_name: Dyne Therapeutics, Inc.
- filed_at: 2026-06-22T20:15:29+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1818794/000181879426000005/0001818794-26-000005-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1818794/000181879426000005/dyn-20260622.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001818794-26-000005
- JSON: https://secwatch.observer/filing/0001818794-26-000005.json
- Plain text: https://secwatch.observer/filing/0001818794-26-000005.txt

## Key facts
- Executive change
  Barry E. Greene was elected as Class I director at Dyne Therapeutics, Inc..
  - Action: elected
  - Role: Class I director
  source text: On June 22, 2026, the Board of Directors (the “Board”) of Dyne Therapeutics, Inc. (the “Company”), upon recommendation from the Nominating and Corporate Governance Committee of the Board, elected Barry E. Greene as a Class I director to serve on the Board until the Company’s 2027 Annual Meeting of Stockholders and until his successor has been duly elected and qualified or until his earlier death, resignation or removal.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1818794/000181879426000005/0001818794-26-000005-index.htm

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