Cyclerion Therapeutics, Inc. (CYCN)
Nasdaq: CYCN · Pharmaceutical Preparations · Cambridge, MA · filing with the SEC since 2018
Filings
255 filings since 2017 beside 138 insider forms · Non-accelerated filer and smaller reporting company · read from EDGAR on Nov 13, 2026Due nextNon-accelerated filer and smaller reporting company
10-K
Annual report for the fiscal year ending Dec 31, 2026Non-accelerated filers and smaller reporting companies have 90 days after the fiscal year ends.
by Mar 31, 2027
10-Q
Quarterly report for the quarter ending Mar 31, 2027Non-accelerated filers and smaller reporting companies have 45 days after the quarter ends; quarter ends are taken to the month end.
by May 15, 2027
A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 36 days after the quarter ended. The proxy statement was last filed Oct 15, 2026.
Filings a yearinsider forms included
8053603945213158
2026 counts to Nov 13, 2026.
Officer or director change (8-K item 5.02): 5 times in the last 36 months, the newest Sep 11, 2026.SEC letters: 7 in the last 36 months, the newest May 13, 2025.
Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.
FiledFormWhat it is, in plain wordsPeriodAsk
Sep 11, 2026
8-K items 1.01, 2.01, 2.02, 3.02, 3.03, 5.01, 5.02, 5.03, 5.05, 5.06, 7.01, 9.01
Major agreement signed; Purchase or sale of a business completed; Results released; Shares sold without registration; Change to shareholders' rights; Change of control; Officer or director change; Charter, bylaw or fiscal-year change; item 5.05; item 5.06; Investor disclosure (Regulation FD) · Current report
Sep 8, 2026
Apr 1, 2026
8-K items 1.01, 5.01, 5.02, 7.01, 9.01
Major agreement signed; Change of control; Officer or director change; Investor disclosure (Regulation FD) · Current report
Jan 6, 2026
8-K items 1.01, 7.01, 9.01
Major agreement signed; Investor disclosure (Regulation FD) · Current report
Jan 3, 2026
40 of 255 shown
Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.