EX-10.31
Cyclerion Therapeutics, Inc.
[***] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, HAS BEEN OMITTED BECAUSE THE INFORMATION (I) IS NOT MATERIAL AND (II) IS THE TYPE OF INFORMATION THAT THE REGISTRANT BOTH CUSTOMARILY AND ACTUALLY TREATS AS PRIVATE AND CONFIDENTIAL.
To:
Korsana Biosciences, Inc.
221 Crescent Street, Building 23, Suite 105
Waltham, MA 02453
Attn: Jonathan Violin, CEO
RE:
AOC Research Letter Agreement
April 3, 2026
Dear Jonathan,
…