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Friday, September 4, 2026

Equity Corporate Actions Alert #2026 - 648
Information Regarding the Business Combination, Change of Control, and Reverse Split of Cyclerion Therapeutics, Inc. (CYCN) & Korsana Biosciences, Inc.

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  • Industry Announcement

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The business combination of Cyclerion Therapeutics, Inc. (CYCN) & Korsana Biosciences, Inc. resulting in a Change of Control is expected to close on September 8, 2026. As a result, Cyclerion Therapeutics, Inc. (CYCN) will undergo a one-for-seven (1-7) reverse stock split of its Common Stock along with a change of name, symbol & Cusip. Further, participating holders of record on September 4, 2026 will receive one (1) Contingent Value Right (CVR) for each share held. The CVR distribution will not be quoted EX. These changes are expected to become effective on Wednesday, September 9, 2026. Subject to closing.

The details of the reverse split & CUSIP changes are follows:

Company Name & Issue Type: Cyclerion Therapeutics, Inc. Common Stock
Company Name & Issue Type: Korsana Biosciences, Inc. Common Stock
Current CUSIP: 23255M204
New CUSIP: 23255M303
Current Symbol: CYCN
New Symbol: KRSA
Ratio of Reverse Split: 1 for 7
Marketplace Effective Date: September 9, 2026

If you would like to register as a market maker in KRSA, contact Nasdaq Trading Services at +1 212 231 5100.

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