Cyclerion Therapeutics, Inc. — Investor Relations & Filings
Filings indexed
338
across all filing types
Latest filing
2026-04-30
Annual Report
Country
US
United States of America
Listing
US
CYCN
Cyclerion Therapeutics, Inc. is a biopharmaceutical company dedicated to advancing personalized therapeutic approaches for neuropsychiatric disorders. The company's primary focus is on developing a treatment for people with Treatment-Resistant Depression (TRD). Its lead program utilizes a method that combines generic anesthetics with a personalized, biofeedback-driven device. This approach is designed to reset dysregulated brainwave patterns by tailoring the therapy to each patient's specific biological needs, offering a new option for individuals who have not responded to traditional treatments.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 10-K/A - Cyclerion Therapeutics, Inc. (0001755237) (Filer) | 2026-04-30 | English | |
| S-4 - Cyclerion Therapeutics, Inc. (0001755237) (Filer) | 2026-04-18 | English | |
| 8-K - Cyclerion Therapeutics, Inc. (0001755237) (Filer) | 2026-04-01 | English | |
| 8-K Filing | 2026-02-17 | English | |
| 8-K | 2026-01-06 | English | |
| 8-K | 2025-12-01 | English |
| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
5 filings
| |||||
| 39084845 | 10-K/A - Cyclerion Therapeutics, Inc. (0001755237) (Filer) | 2026-04-30 | English | ||
| 34690289 | S-4 - Cyclerion Therapeutics, Inc. (0001755237) (Filer) | 2026-04-18 | English | ||
| 33149913 | 8-K - Cyclerion Therapeutics, Inc. (0001755237) (Filer) | 2026-04-01 | English | ||
| 31598202 | 8-K Filing | 2026-02-17 | English | ||
| 13140111 | 8-K | 2026-01-06 | English | ||
|
2025
10 filings
| |||||
| 13140112 | 8-K | 2025-12-01 | English | ||
| 13140113 | 10-Q | 2025-11-12 | English | ||
| 13140114 | 10-K/A | 2025-11-12 | English | ||
| 13140115 | Major Shareholding Notification 2025 | 2025-10-17 | English | ||
| 13140117 | 8-K | 2025-09-23 | English | ||
| 13140118 | Major Shareholding Notification 2025 | 2025-08-14 | English | ||
| 13140119 | 4 | 2025-08-11 | English | ||
| 13140121 | 10-Q | 2025-08-05 | English | ||
| 13140123 | 8-K | 2025-06-18 | English | ||
| 13140124 | Regulatory Filings 2025 | 2025-05-16 | English | ||
Market data
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Cyclerion Therapeutics, Inc. via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/35315/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=35315 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=35315 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=35315 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 35315}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for Cyclerion Therapeutics, Inc. (id: 35315)"
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