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CYCLERION THERAPEUTICS INC COM (CYCN)

Institutional ownership, SEC filings and insider activity

Sector: Healthcare & Pharma · SEC CIK 0001755237 · EDGAR filings · Updated 2026-07-24

CYCLERION THERAPEUTICS INC COM (CYCN) has reported institutional ownership of 3.7%, with 17 institutional managers holding positions valued at $249.0K per the latest 13F reporting period. SEC filings include an active notice of delisting or failure to satisfy a continued listing rule (8-K Item 3.01), substantial-doubt (going concern) disclosure per the filings.

Filings this week (3)

• 2026-07-24 — EFFECT filed
• 2026-07-24 — Prospectus supplement (424B3) filed
• 2026-07-22 — S-4/A filed

Every filing links to the official SEC document. Real-time filing alerts for this company are available inside the app.

Latest updates

• 2026-07-20 — SCHEDULE 13D/A filed
• 2026-07-20 — Insider transaction reported (Form 4)
• 2026-07-10 — 425 filed

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, CYCLERION THERAPEUTICS INC COM has 17 institutional holders and institutional ownership of 3.7%.

Insider activity

Insiders reported 0 transactions (0 buys, 0 sells) across 0 reporting insiders, with a net reported value of $0.

Data flags from SEC filings

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