Quarterly report [Sections 13 or 15(d)]

Other Balance Sheet Components - Schedule of Inventories (Details)

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Other Balance Sheet Components - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Balance Sheet Related Disclosures [Abstract]    
Raw materials $ 7,335 $ 4,514
Work in process 6,768 3,910
Finished goods 7,198 4,712
Reported as:    
Inventories 15,805 11,506 [1]
Other assets 5,496 1,630
Total $ 21,301 $ 13,136
[1] The balance sheet at December 31, 2025 has been derived from the audited financial statements included in Rigel’s Annual Report on Form 10-K for the year ended December 31, 2025 filed with the Securities and Exchange Commission (SEC) on March 3, 2026.