| Summary of marketable securities |
Marketable securities as of June 30, 2026 consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Amortized
Cost | | Gross
Unrealized
Gains | | Gross
Unrealized
Losses | | Fair
Value | | Marketable securities, current: | | | | | | | | | Corporate debt securities | $ | 148,852 | | | $ | 4 | | | $ | (292) | | | $ | 148,564 | | | U.S. government debt securities | 15,025 | | | — | | | (35) | | | 14,990 | | | U.S. Treasury securities | 11,502 | | | 1 | | | (4) | | | 11,499 | | | Marketable securities, non-current: | | | | | | | | | Corporate debt securities | 35,264 | | | — | | | (81) | | | 35,183 | | | U.S. Treasury securities | 4,013 | | | — | | | (9) | | | 4,004 | | | U.S. government debt securities | 7,627 | | | — | | | (28) | | | 7,599 | | | Total marketable securities, current and non-current | $ | 222,283 | | | $ | 5 | | | $ | (449) | | | $ | 221,839 | |
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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