---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-22-026908"
form_type: "8-K"
ticker: "CYCN"
cik: "0001755237"
company_name: "Cyclerion Therapeutics, Inc."
filed_at: "2022-07-26T23:59:59+00:00"
generated_at: "2026-06-24T08:49:28.600112+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Cyclerion appoints Steven E. Hyman to board; former NIMH director and neuroscience leader

## Summary
- Steven Hyman appointed to Board effective July 25, 2022, following Board expansion from 8 to 9 members.
- Hyman serves on Science Committee; is director of Stanley Center for Psychiatric Research at Broad Institute.
- Previously served as director of NIMH (1996-2001) and provost of Harvard University (2001-2011).
- Will help shape clinical strategy for lead molecule CY6463 and expand external collaborations.

## SEC filing metadata
- accession: 0001140361-22-026908
- form_type: 8-K
- ticker: CYCN
- cik: 0001755237
- company_name: Cyclerion Therapeutics, Inc.
- filed_at: 2022-07-26T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1755237/000114036122026908/0001140361-22-026908-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1755237/000114036122026908/brhc10039916_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-22-026908
- JSON: https://secwatch.observer/filing/0001140361-22-026908.json
- Plain text: https://secwatch.observer/filing/0001140361-22-026908.txt

## Key facts
- Executive change
  Steven E. Hyman, M.D. was appointed as director at Cyclerion Therapeutics, Inc..
  - Action: appointed
  - Role: director
  source text: Cyclerion Therapeutics, Inc. (the “Company”) has announced that Steven E. Hyman, M.D., was appointed to the Company’s board of directors (the “Board”) on July 25, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1755237/000114036122026908/0001140361-22-026908-index.htm

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