The following tables summarize the fair value of cash, cash equivalents and marketable securities as well as gross unrealized holding gains and losses as of June 30, 2025 and December 31, 2024: | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2025 | | (in thousands) | Amortized Cost | | Gross Unrealized Holding Gains | | Gross Unrealized Holding Losses | | Fair Value | | Cash | $ | 7,679 | | | $ | — | | | $ | — | | | $ | 7,679 | | | Cash equivalents | 20,736 | | | — | | | — | | | 20,736 | | | Marketable securities | 9,935 | | | — | | | (3) | | | 9,932 | | | Total cash, cash equivalents and marketable securities | $ | 38,350 | | | $ | — | | | $ | (3) | | | $ | 38,347 | |
| | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2024 | | (in thousands) | Amortized Cost | | Gross Unrealized Holding Gains | | Gross Unrealized Holding Losses | | Fair Value | | Cash | $ | 522 | | | $ | — | | | $ | — | | | $ | 522 | | | Cash equivalents | 25,779 | | | — | | | — | | | 25,779 | | | Marketable securities | 26,767 | | | 7 | | | — | | | 26,774 | | | Total cash, cash equivalents and marketable securities | $ | 53,068 | | | $ | 7 | | | $ | — | | | $ | 53,075 | |
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