Special Meeting Materials

Special Proxy Statement

View an enhanced version of our Notice of Special Meeting and Proxy Statement.

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Letter from Steven Kelly, CEO of Carisma Therapeutics, to Sesen Bio Stockholders

View an enhanced version of the letter from Carisma Therapeutics CEO to Sesen Stockholders.

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Stockholder Letter dated February 17, 2023

View an enhanced version of our Stockholder Letter.

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Prospectus Supplement dated February 16, 2023

View an enhanced version of our Prospectus Supplement.

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Request Paper Materials

You may request copies by email, online, or by dialing 866-648-8133.

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Vote Now

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Special Meeting Details

Date:

March 2, 2023

Time:

10:00 a.m. Eastern Time

Virtual Meeting:

Register

Note: You must register to be eligible to participate in the meeting.

Learn More About Pending Merger

To learn more about our pending merger with Carisma Therapeutics, please visit the link below.

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Annual Meeting Materials

Annual Report on Form 10-K

View an enhanced version of our Annual Report on Form 10-K.

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Proxy Statement

View an enhanced version of our Proxy Statement.

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