Audit Information	6 Months Ended
Jun. 30, 2026
Auditor Information [Abstract]
Auditor Name	KPMG LLP
Auditor Location	San Diego, California
Auditor Firm ID	185
Auditor Opinion	Opinion on the Consolidated Financial Statements We have audited the accompanying consolidated balance sheets of AnaptysBio, Inc. and subsidiary (the Company) as of June 30, 2026, December 31, 2025 and December 31, 2024, the related consolidated statements of operations and comprehensive loss, stockholders’ equity (deficit), and cash flows for the six-months ended June 30, 2026 and for each of the years in the two-year period ended December 31, 2025, and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of June 30, 2026, December 31, 2025, and December 31, 2024, and the results of its operations and its cash flows for the six-month period ended June 30, 2026 and for each of the years in the two-year period ended December 31, 2025, in conformity with U.S. generally accepted accounting principles.

San Diego, California

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of AnaptysBio, Inc. and subsidiary (the Company) as of June 30, 2026, December 31, 2025 and December 31, 2024, the related consolidated statements of operations and comprehensive loss, stockholders’ equity (deficit), and cash flows for the six-months ended June 30, 2026 and for each of the years in the two-year period ended December 31, 2025, and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of June 30, 2026, December 31, 2025, and December 31, 2024, and the results of its operations and its cash flows for the six-month period ended June 30, 2026 and for each of the years in the two-year period ended December 31, 2025, in conformity with U.S. generally accepted accounting principles.