CYCN (CYCN)
Cyclerion Therapeutics, Inc.
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Cyclerion Therapeutics, Inc. operates as a biopharmaceutical company in the clinical development phase, concentrating on the discovery, advancement, and commercialization of therapeutic agents for debilitating central nervous system (CNS) disorders. Their leading experimental compound, CY6463, is a soluble guanylate cyclase (sGC) stimulator designed to cross the blood-brain barrier.
It is presently in Phase IIa clinical assessments for managing mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS), as well as Alzheimer's disease with vascular involvement. Concurrently, CY6463 is undergoing Phase 1 trials for treating schizophrenia in adult populations.
The company's research portfolio also features other promising candidates: Praliciguat, an orally administered systemic sGC stimulator, is in Phase II studies targeting resistant hypertension and diabetic nephropathy. Olinciguat, another sGC stimulator designed for oral intake with a vascular focus, is progressing through Phase II trials for sickle cell disease. Moreover, CY3018 is under development to address a range of CNS ailments. Cyclerion holds a licensing agreement with Akebia Therapeutics, Inc., covering the entire lifecycle from development and manufacturing to medical affairs and commercialization for certain pharmaceutical compounds and related products.
The company was founded in 2018 and has its principal place of business in Cambridge, Massachusetts.
Leadership
Dina Katabi, Ph.D.
Director
Errol B. De Souza, Ph.D.
Chairman of the Board of Directors
Michael F. Higgins
Director
Peter M. Hecht, Ph.D.
Director
Employees
1
Country
US
Sector
Healthcare
Website
cyclerion.com
| Insider | Title | Type | Shares | Value | Date |
|---|---|---|---|---|---|
| See Remarks | Option Exercise | 55.8K | -- | Aug 14, 2026 | |
| Chief Financial Officer | Option Exercise | 25.0K | -- | Aug 14, 2026 | |
| Chief Financial Officer | Option Exercise | 25.0K | $58.9K | Aug 14, 2026 | |
| See Remarks | Option Exercise | 55.8K | $184.3K | Aug 14, 2026 | |
| See Remarks | Automatic Sell | 48.6K | $184.3K | Aug 14, 2026 | |
| Director | Conversion of Derivative | 351.0K | -- | Jul 16, 2026 |
| Name | Shares | % | Source |
|---|---|---|---|
FMR LLC · net of 13F· joint filing· may incl. warrants· filed Oct 2026 | 3.1M | 6.9% | 13G |
Wellington Biomedical Innovation Master Investors (Cayman) II, L.P. · may incl. warrants· filed Sep 2026 | 2.8M | 6.1% | 13G |
Invus Public Equities, L.P. 2 · may incl. warrants· stale · filed Jul 2024 | 1.7M | 4.3% | 13G |
Tomas Kiselak · joint filing· may incl. warrants· filed Sep 2026 | 1.3M | 20.0% | 13D |
VHCP Co-Investment Holdings III, LLC · joint filing· may incl. warrants· filed Sep 2026 | 650.3K | 9.9% | 13D |
GENERAL ATLANTIC, L.P. · joint filing· may incl. warrants· filed Sep 2026 | 457.3K | 6.8% | 13G |
Kalehua Capital Management LLC | 235.9K | -- | 13F |
Violin Jonathan See Remarks, Director | 207.4K | -- | FORM 4 |
Peter M. Hecht · may incl. warrants· filed Jul 2026 | 130.0K | 19.4% | 13D |
FMR LLC | 92.8K | -- | 13F |
Insiders
- Graul Regina MargaretSee Remarks
- CHICKO RHONDA M.Chief Financial Officer
- Hecht Peter MDirector
- Higgins Michael JDirector
- Slate Path Capital LP10% Owner
- Violin JonathanSee Remarks, Director
30d Avg
--
60d Avg
23.58K
90d Avg
10.08K