---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-115089"
form_type: "8-K"
ticker: "CYCN"
cik: "0001755237"
company_name: "Cyclerion Therapeutics, Inc."
filed_at: "2025-05-07T23:59:59+00:00"
generated_at: "2026-05-22T08:36:42.300323+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Cyclerion enters $20M ATM equity distribution agreement with Guggenheim

## Summary
- Entered Sales Agreement with Guggenheim Securities for at-the-market offering of up to $20M of common stock.
- Guggenheim will receive 3% commission on gross proceeds; sales limited by public float under Instruction I.B.6.
- Company has not sold any securities under Instruction I.B.6 in prior 12 months; current public float below $75M.
- Legal opinion from Ropes & Gray covers sale of up to $2,994,080 of Shares under the agreement.

## SEC filing metadata
- accession: 0001193125-25-115089
- form_type: 8-K
- ticker: CYCN
- cik: 0001755237
- company_name: Cyclerion Therapeutics, Inc.
- filed_at: 2025-05-07T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1755237/000119312525115089/0001193125-25-115089-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1755237/000119312525115089/d51125d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-115089
- JSON: https://secwatch.observer/filing/0001193125-25-115089.json
- Plain text: https://secwatch.observer/filing/0001193125-25-115089.txt

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