Interest expense, net consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | Interest expense accrued on liabilities related to future royalties and milestones, net | | $ | 12,447 | | | $ | 10,681 | | | $ | 23,477 | | | $ | 20,819 | | Cumulative catch-up adjustment arising from the liabilities related to future royalties and milestones, net | | (15,171) | | | (17,525) | | | (15,171) | | | (17,525) | | Other interest expense | | 50 | | | 15 | | | 144 | | | 20 | | | Total interest expense | | $ | (2,674) | | | $ | (6,829) | | | $ | 8,450 | | | $ | 3,314 | |
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