ANAB 8-K
Anaptysbio, Inc (ANAB)
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 7.01 Regulation FD Disclosure.
As previously disclosed, on November 20, 2025, AnaptysBio, Inc. (the “Company”) filed a Verified Complaint in Delaware Court of Chancery (the “Court”), requesting a court declaration that TESARO, Inc. (“Tesaro”) has materially breached the parties’ Collaboration and Exclusive License Agreement (“Collaboration Agreement”) and that GlaxoSmithKline (together with Tesaro and TESARO Development, Ltd., the “Defendants”), Tesaro’s corporate parent, has tortiously interfered with the Collaboration Agreement. The litigation was subsequently consolidated with a case filed against the Company by Tesaro and TESARO Development, Ltd., and captioned In re Tesaro, Inc. Litigation, C.A. No. 2025-1357-KSJM.
The trial of the consolidated litigation was held July 14-17, 2026. Following the trial, on July 28, 2026, the Company, and the Defendants, submitted a Joint Stipulation and Proposed Order (the “Stipulation”) with the Court to propose a schedule governing the post-trial briefing. On July 28, 2026, the Court granted the Stipulation.
Pursuant to the Stipulation, (i) the Company will file its opening post-trial brief on or before August 21, 2026, (ii) the Defendants will file their answering post-trial brief on or before September 25, 2026, (iii) the Company will file its reply post-trial brief on or before October 9, 2026, and (iv) post-trial argument will be held on October 20, 2026.
The information furnished in this Item 7.01 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, and shall not be deemed to be incorporated by reference into any filing of the Company under the Exchange Act or the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
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ANAPTYSBIO, INC. |
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Date: |
July 30, 2026 |
By: |
/s/ Christopher M. Murphy |
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Christopher M. Murphy |