| Schedule of Carrying Values and Estimated Fair Values of Debt Instruments |
The carrying amount and fair value of our Convertible Notes were as follows (in thousands). | | | | | | | | | | | | | | | | | June 30,
2026 | | December 31,
2025 | | Principal amount | | | | | | | | | | | 2027 Convertible Notes | | $ | 209,575 | | | $ | 209,575 | | | 2028 Convertible Notes | | 469,999 | | | 469,999 | | | 2031 Convertible Notes | | 750,000 | | | 750,000 | | | 2032 Convertible Notes | | 750,000 | | | 750,000 | | Total principal amount | | $ | 2,179,574 | | | $ | 2,179,574 | | | | | | | | Unamortized debt discount | | | | | | | | | | | 2027 Convertible Notes | | $ | (605) | | | $ | (1,058) | | | 2028 Convertible Notes | | (4,517) | | | (5,561) | | 2031 Convertible Notes | | (13,647) | | | (15,108) | | 2032 Convertible Notes | | (14,151) | | | (15,217) | | | Total unamortized debt discount | | $ | (32,920) | | | $ | (36,944) | | | | | | | | Carrying amount | | | | | | | | | | | 2027 Convertible Notes | | $ | 208,970 | | | $ | 208,517 | | | 2028 Convertible Notes | | 465,482 | | | 464,438 | | 2031 Convertible Notes | | 736,353 | | | 734,892 | | 2032 Convertible Notes | | 735,849 | | | 734,783 | | | Total carrying amount | | $ | 2,146,654 | | | $ | 2,142,630 | | | | | | | Fair value based on trading levels (Level 2) | | | | | | | | | | | 2027 Convertible Notes | | $ | 233,850 | | | $ | 229,736 | | | 2028 Convertible Notes | | 686,871 | | | 624,690 | | 2031 Convertible Notes | | 809,025 | | | 755,655 | | 2032 Convertible Notes | | 824,618 | | | 764,213 | | | Total fair value of outstanding notes | | $ | 2,554,364 | | | $ | 2,374,294 | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| Schedule of Interest Income and Interest Expense Disclosure |
The following table summarizes the components of interest expense and the effective interest rates for each of our Convertible Notes (in thousands). | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | | June 30, | | June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | | Coupon interest | | | | | | | | | | | | | | | | | | | 2027 Convertible Notes | | $ | 131 | | $ | 503 | | $ | 262 | | $ | 1,006 | | 2028 Convertible Notes | | 1,175 | | 1,800 | | 2,350 | | 3,600 | | 2032 Convertible Notes | | 1,641 | | — | | 3,281 | | — | | Total coupon interest | | $ | 2,947 | | $ | 2,303 | | $ | 5,893 | | $ | 4,606 | | | | | | | | | | | Amortization of debt discount | | | | | | | | | | | | | | | | | | | 2027 Convertible Notes | | $ | 226 | | $ | 863 | | $ | 452 | | $ | 1,725 | | 2028 Convertible Notes | | 523 | | 790 | | 1,044 | | 1,576 | | 2031 Convertible Notes | | 731 | | — | | 1,461 | | — | 2032 Convertible Notes | | 534 | | — | | 1,066 | | — | | Total amortization of debt discount | | $ | 2,014 | | $ | 1,653 | | $ | 4,023 | | $ | 3,301 | | | | | | | | | | | Interest expense | | | | | | | | | | | | | | | | | | | 2027 Convertible Notes | | $ | 357 | | $ | 1,366 | | $ | 714 | | $ | 2,731 | | 2028 Convertible Notes | | 1,698 | | 2,590 | | 3,394 | | 5,176 | 2031 Convertible Notes | | 731 | | — | | 1,461 | | — | 2032 Convertible Notes | | 2,175 | | — | | 4,347 | | — | | Total interest expense | | $ | 4,961 | | $ | 3,956 | | $ | 9,916 | | $ | 7,907 | | | | | | | | | | | Effective interest rates | | | | | | | | | | | | | | | | | | | 2027 Convertible Notes | | 0.7 | % | | 0.7 | % | | 0.7 | % | | 0.7 | % | | 2028 Convertible Notes | | 1.5 | % | | 1.5 | % | | 1.5 | % | | 1.5 | % | 2031 Convertible Notes | | 0.4 | % | | $ | — | | | 0.4 | % | | $ | — | | 2032 Convertible Notes | | 1.2 | % | | $ | — | | | 1.2 | % | | $ | — | |
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