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"NEW BRUNSWICK, NJ (July 29, 2026) - Johnson & Johnson (NYSE: JNJ[3]) today announced the successful completion of its acquisition of Firefly Bio, Inc. ... for $1 billion in cash"; the 8-K furnishing it gives "Date of report (Date of earliest event reported): July 29, 2026".
J&J's filing furnishing the completion release as Exhibit 99.1: the Firefly deal cuts 2026 adjusted EPS by about $0.46 and 2027 by about $0.08, and with the Sail Biomedicines deal lowers 2026 adjusted operational EPS guidance to $10.86-$11.01.[1]
J&J's 8 June 2026 announcement of the definitive agreement to buy Firefly Bio for $1 billion in cash, closing expected later in the year subject to regulatory approvals.[1]
Independent coverage of the deal: explains degrader antibody conjugates, and says Firefly is a South San Francisco biotech incubated by Versant Ventures, launched in 2024 on a $94 million Series A and led by CEO Scott Hirsch.[1]
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