Form 8-K ANAPTYSBIO, INC For: Nov 26

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AnaptysBio files lawsuit against Tesaro and GSK over license deal

November 26, 2025 4:05 PM EST

AnaptysBio Inc. (NASDAQ: ANAB) filed a lawsuit in Delaware Chancery Court claiming Tesaro Inc. materially breached their collaboration and exclusive license agreement, according to a company filing.

The complaint, initially filed November 20 and made public November 26, also alleges that GlaxoSmithKline, Tesaro's parent company, tortiously... More