Day One Biopharmaceuticals Acquires Mersana Therapeutics for $25 per Share.
ByAinvest
Tuesday, Jan 6, 2026 9:07 am ET1min read
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Day One Biopharmaceuticals has successfully closed its acquisition of Mersana Therapeutics, a biopharmaceutical company developing targeted therapies for life-threatening diseases. The acquisition was completed at a price of $25 per share in cash, plus one non-tradable contingent value right to receive up to $30.25 per CVR in cash. The deal expands Day One's focus into adult oncology while maintaining a focus on rare cancers.
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