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Filing
SCHEDULE 13G
SCHEDULE 13G0000019617-26-000402·Cyclerion Therapeutics, Inc.
Schedule 13G ownership disclosure
KORSANA BIOSCIENCES INC
Common Stock, no par value · CUSIP: 23255M303
Event date: 2026-09-30
- Filing-level shares
- 2,687,914.0
- Percent of class
- 5.9%
- JPMORGAN CHASE & CO.
Shares: 2,687,914.0 · Class: 5.9%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0000019617-26-000402
- Form type
- SCHEDULE 13G
- Filer
- Cyclerion Therapeutics, Inc.
- CIK
- CIK 1755237
- Filed
- Nov 10, 2026
- Reporting period
- Sep 30, 2026
- Description
- Schedule 13G beneficial ownership