| Summary of marketable securities |
Marketable securities as of September 30, 2026 consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | | Marketable securities, current: | | | | | | | | | Corporate debt securities | $ | 154,953 | | | $ | 2 | | | $ | (550) | | | $ | 154,405 | | | U.S. government debt securities | 11,620 | | | — | | | (50) | | | 11,570 | | | U.S. Treasury securities | 7,017 | | | — | | | (19) | | | 6,998 | | | Marketable securities, non-current: | | | | | | | | | Corporate debt securities | 59,425 | | | — | | | (358) | | | 59,067 | | | U.S. government debt securities | 8,812 | | | — | | | (78) | | | 8,734 | | | U.S. Treasury securities | 1,498 | | | — | | | (10) | | | 1,488 | | | Total marketable securities, current and non-current | $ | 243,325 | | | $ | 2 | | | $ | (1,065) | | | $ | 242,262 | |
Marketable securities as of December 31, 2025 consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | | Marketable securities, current: | | | | | | | | | Corporate debt securities | $ | 131,038 | | | $ | 50 | | | $ | (37) | | | $ | 131,051 | | | U.S. Treasury securities | 28,107 | | | 26 | | | (2) | | | 28,131 | | | U.S. government debt securities | 14,756 | | | — | | | (4) | | | 14,752 | | | Marketable securities, non-current: | | | | | | | | | Corporate debt securities | 45,544 | | | 33 | | | (14) | | | 45,563 | | | U.S. government debt securities | 2,002 | | | — | | | (1) | | | 2,001 | | | U.S. Treasury securities | 1,000 | | | — | | | (1) | | | 999 | | | Total marketable securities, current and non-current | $ | 222,447 | | | $ | 109 | | | $ | (59) | | | $ | 222,497 | |
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