Core Viewpoint - AnaptysBio is engaged in a legal dispute with Tesaro and GSK regarding a Collaboration and Exclusive License Agreement, with a trial scheduled for July 14-17, 2026, to resolve all claims [1]. Group 1: Legal Proceedings - Anaptys filed a partial motion to dismiss Tesaro's anticipatory breach of contract claim in Delaware Chancery Court [1]. - Tesaro initiated a lawsuit against Anaptys on November 20, 2025, claiming Anaptys had repudiated the Collaboration Agreement [2]. - Anaptys responded with its own complaint, asserting that Tesaro materially breached the Collaboration Agreement and that GSK tortiously interfered with it [3]. Group 2: Motion to Dismiss - Anaptys filed a Motion to Dismiss Tesaro's claim on December 30, 2025, arguing that it has not repudiated the Collaboration Agreement and is merely asserting its contract rights [4]. - The motion also invokes Delaware's anti-SLAPP law, which aims to prevent lawsuits that deter good-faith legal rights assertions [4]. - Tesaro and GSK argue that Anaptys' Motion to Dismiss should stay all discovery, which Anaptys opposes as they prepare for the upcoming trial [5]. Group 3: Collaboration Agreement Details - The Collaboration Agreement, established in March 2014, allows Anaptys to receive royalties from Jemperli sales, structured as follows: 8% for net sales below $1 billion, 12% for sales between $1 billion and $1.5 billion, 20% for sales between $1.5 billion and $2.5 billion, and 25% for sales above $2.5 billion [6][7]. - The royalty term extends until at least the expiration of composition of matter coverage, which is set to expire in 2035 in the U.S. and 2036 in the EU [7]. Group 4: Company Overview - AnaptysBio is a clinical-stage biotechnology company focused on innovative immunology therapeutics for autoimmune and inflammatory diseases [8]. - The company's pipeline includes several candidates, such as rosnilimab for rheumatoid arthritis and ANB033 for celiac disease [8]. - Anaptys plans to separate its biopharma operations from its royalty assets by the end of 2026 to better align with investor interests [9].

Core Viewpoint - AnaptysBio is engaged in a legal dispute with Tesaro and GSK regarding a Collaboration and Exclusive License Agreement, with a trial scheduled for July 14-17, 2026 [1][5]. Group 1: Legal Proceedings - Anaptys filed a partial motion to dismiss Tesaro's anticipatory breach of contract claim in Delaware Chancery Court [1]. - Tesaro initiated a lawsuit against Anaptys on November 20, 2025, claiming Anaptys had repudiated the Collaboration Agreement [2]. - Anaptys responded with its own complaint, asserting that Tesaro materially breached the Collaboration Agreement and that GSK tortiously interfered with it [3]. Group 2: Collaboration Agreement Details - The Collaboration Agreement, established in March 2014, allows Anaptys to receive royalties from sales of Jemperli, with rates of 8% for net sales below $1 billion, 12% for sales between $1 billion and $1.5 billion, 20% for sales between $1.5 billion and $2.5 billion, and 25% for sales above $2.5 billion [6][7]. - The royalty term extends at least until the expiration of composition of matter coverage in 2035 in the U.S. and 2036 in the EU [7]. Group 3: Company Overview - AnaptysBio is a clinical-stage biotechnology company focused on innovative immunology therapeutics for autoimmune and inflammatory diseases [8]. - The company's pipeline includes several candidates, such as rosnilimab for rheumatoid arthritis and ANB033 for celiac disease [8]. - Anaptys plans to separate its biopharma operations from its royalty assets by the end of 2026 to better align with investor interests [9].

Core Viewpoint - GSK's subsidiary, Tesaro Inc., has initiated litigation against AnaptysBio, claiming a material breach of their existing license agreement regarding the oncology treatment Jemperli (dostarlimab) [1][2][3] Group 1: Litigation Details - The litigation allows Tesaro to terminate the current license agreement, obtain a perpetual and irrevocable license to dostarlimab, and reduce royalties and milestone payments to AnaptysBio by 50% [3] - AnaptysBio has alleged that Tesaro has not fulfilled certain requirements of the license agreement from March 2014 and intends to revoke Tesaro's license for dostarlimab [4][5] - The original agreement included an upfront license fee of $17 million and milestone payments of $18 million per development program, with additional payments tied to regulatory submissions [5] Group 2: Financial Implications - AnaptysBio anticipates ending 2025 with approximately $300 million in cash and investments, including a potential $75 million milestone from GSK once Jemperli achieves $1 billion in worldwide net sales [8] - AnaptysBio has authorized a stock repurchase plan of up to $100 million [7] Group 3: Product and Market Context - Jemperli is approved in over 35 countries for certain endometrial cancers, which is the most common gynecologic cancer in the U.S. [6] - A clinical trial program is ongoing to evaluate dostarlimab's potential use in additional cancers, including rectal, colon, and head and neck cancers [6]

Core Viewpoint - AnaptysBio has filed a Verified Complaint against Tesaro and GSK, alleging material breaches of their Collaboration Agreement and seeking legal remedies [1][2]. Group 1: Legal Disputes - Anaptys claims that Tesaro breached the Collaboration Agreement by participating in clinical trials with competing PD-1 antagonists and failing to use reasonable efforts to maximize commercial returns for Jemperli [2]. - Tesaro has initiated its own lawsuit against Anaptys, alleging that Anaptys improperly claimed breaches of the Collaboration Agreement [4]. - The parties are seeking an expedited trial schedule in Delaware Chancery Court, with a trial expected in July 2026 [5]. Group 2: Financial Implications - Anaptys is entitled to royalties from Jemperli sales, structured as 8% for net sales below $1 billion, 12% for sales between $1 billion and $1.5 billion, 20% for sales between $1.5 billion and $2.5 billion, and 25% for sales above $2.5 billion [7]. - A one-time $75 million commercial sales milestone is anticipated once Jemperli achieves $1 billion in worldwide net sales [7]. - Anaptys estimates that Sagard will accrue $250 million in royalties and sales milestones through the end of 2025, with full paydown expected between Q2 2027 and Q2 2028 [9]. Group 3: Background of the Collaboration - The Collaboration Agreement was established in March 2014, allowing Tesaro to develop Jemperli for various solid tumor indications [6]. - Anaptys previously filed a complaint against GSK in 2020 regarding breaches related to GSK's clinical trial of Zejula, which resulted in a settlement that included cash payments and increased royalties on Jemperli [3]. Group 4: Company Overview - AnaptysBio is a clinical-stage biotechnology company focused on innovative immunology therapeutics for autoimmune and inflammatory diseases, with a pipeline that includes multiple therapeutic candidates [10]. - The company plans to separate its biopharma operations from its royalty assets by the end of 2026 to better align with investor interests [11].