TYNDALL CAPITAL PARTNERS L P - 30 Jun 2025 SCHEDULE 13G/A Report for Cyclerion Therapeutics, Inc. Common Stock, no par value (CYCN)

Filing Manager: TYNDALL CAPITAL PARTNERS L P
Reporting Manager: Tyndall Capital Partners, L.P.
Security: Cyclerion Therapeutics, Inc. Common Stock, no par value
Symbol: CYCN
Shares outstanding: 3,233,063 shares
Disclosed Ownership: 155,187 shares
Ownership: 4.8%
Form type: SCHEDULE 13G/A
Filing time: 14 Aug 2025, 16:05:22 UTC
Date of event: 30 Jun 2025
Previous filing: 15 May 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Tyndall Capital Partners, L.P.	4.8%	155,187	155,187	0	/s/ Jeffrey S. Halis	Jeffrey S. Halis, Manager of Jeffrey Management LLC, its general partner