Quarterly report [Sections 13 or 15(d)]

Debt - Schedule of Loans Payable, Net (Details)

v3.26.1
Debt - Schedule of Loans Payable, Net (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Debt Disclosure [Abstract]    
Principal outstanding $ 45,000 $ 52,500
Unamortized debt issuance costs (144) (206)
Principal outstanding, net of unamortized debt issuance costs 44,856 52,294
Reported as:    
Loans payable, net, current portion 29,865 29,812 [1]
Long-term portion of loans payable, net 14,991 22,482 [1]
Total $ 44,856 $ 52,294
[1] The balance sheet as of 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.