| Cash Equivalents and Investments |
2. Cash Equivalents and Investments Cash equivalents and marketable securities consisted of the following as of the periods presented below (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2026 | | Amortized Cost | | Unrealized Gains | | Unrealized Losses | | Fair Value | | Cash equivalents: | | | | | | | | | Money market funds | $ | 282,745 | | | $ | — | | | $ | — | | | $ | 282,745 | | | U.S. treasury securities | 38,296 | | | — | | | (3) | | | 38,293 | | | U.S. government agency securities | 16,800 | | | — | | | (4) | | | 16,796 | | Commercial paper | 77,517 | | | — | | | — | | | 77,517 | | | | | | | | | | | Total cash equivalents | 415,358 | | | — | | | (7) | | | 415,351 | | | Marketable securities: | | | | | | | | | U.S. treasury securities | 40,602 | | | — | | | (44) | | | 40,558 | | | U.S. government agency securities | 27,598 | | | — | | | (50) | | | 27,548 | | | Corporate debt securities | 13,326 | | | — | | | (20) | | | 13,306 | | Commercial paper | 13,518 | | | — | | | (1) | | | 13,517 | | Certificates of deposit | 134,613 | | | — | | | — | | | 134,613 | | | Total marketable securities | 229,657 | | | — | | | (115) | | | 229,542 | | | Total cash equivalents and marketable securities | $ | 645,015 | | | $ | — | | | $ | (122) | | | $ | 644,893 | |
| | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2025 | | Amortized Cost | | Unrealized Gains | | Unrealized Losses | | Fair Value | | Cash equivalents: | | | | | | | | | Money market funds | $ | 120,923 | | | $ | — | | | $ | — | | | $ | 120,923 | | | U.S. treasury securities | 100,235 | | | 16 | | | — | | | 100,251 | | | U.S. government agency securities | 26,168 | | | 3 | | | (1) | | | 26,170 | | | Corporate debt securities | 47,466 | | | — | | | — | | | 47,466 | | Certificates of deposit | 129,875 | | | — | | | — | | | 129,875 | | | Total cash equivalents | 424,667 | | | 19 | | | (1) | | | 424,685 | | | Marketable securities: | | | | | | | | | U.S. treasury securities | 131,286 | | | 102 | | | (9) | | | 131,379 | | | U.S. government agency securities | 30,868 | | | 40 | | | — | | | 30,908 | | | Corporate debt securities | 36,878 | | | 69 | | | (6) | | | 36,941 | | Commercial paper | 12,369 | | | — | | | — | | | 12,369 | | | | | | | | | | | Total marketable securities | 211,401 | | | 211 | | | (15) | | | 211,597 | | | Total cash equivalents and marketable securities | $ | 636,068 | | | $ | 230 | | | $ | (16) | | | $ | 636,282 | |
The following table presents gross unrealized losses and fair values for the securities that were in a continuous unrealized loss position as of the periods presented below (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2026 | | Less than 12 months | | Greater than 12 months | | Total | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | | U.S. treasury securities | $ | 32,190 | | | $ | (44) | | | $ | 5,000 | | | $ | — | | | $ | 37,190 | | | $ | (44) | | | U.S. government agency securities | 27,548 | | | (50) | | | — | | | — | | | 27,548 | | | (50) | | | Commercial paper | 1,443 | | | (1) | | | — | | | — | | | 1,443 | | | (1) | | | Corporate debt securities | 11,438 | | | (20) | | | — | | | — | | | 11,438 | | | (20) | | | Total | $ | 72,619 | | | $ | (115) | | | $ | 5,000 | | | $ | — | | | $ | 77,619 | | | $ | (115) | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2025 | | Less Than 12 Months | | 12 Months or Greater | | Total | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | | U.S. treasury securities | $ | 21,500 | | | $ | (9) | | | $ | — | | | $ | — | | | $ | 21,500 | | | $ | (9) | | | | | | | | | | | | | | | Corporate debt securities | 7,495 | | | (6) | | | — | | | — | | | 7,495 | | | (6) | | | Total | $ | 28,995 | | | $ | (15) | | | $ | — | | | $ | — | | | $ | 28,995 | | | $ | (15) | |
The amortized cost and fair value of the available-for-sale debt securities based on contractual maturities are as follows (in thousands): | | | | | | | | | | | | | | | | | September 30, 2026 | | | | Amortized Cost | | Fair Value | | | | | | Due within one year | $ | 226,664 | | | $ | 226,570 | | | | | | | Due after one year but within five years | 2,993 | | | 2,972 | | | | | | | Total | $ | 229,657 | | | $ | 229,542 | | | | | |
Accrued interest receivable of $0.7 million and $1.5 million was classified in prepaid expenses and other current assets in the condensed consolidated balance sheets as of September 30, 2026 and December 31, 2025, respectively.
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