The following table presents the fair values and the gross unrealized losses of these available-for-sale debt investments as of December 31, 2025, aggregated by investment category and the length of time that individual securities have been in a continuous loss position: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Less than 12 months | | 12 months or greater | | | | Fair Value | | Gross Unrealized Losses | | Fair Value | | Gross Unrealized Losses | | Corporate bonds and commercial paper | | $ | 1,492 | | | $ | (3) | | | $ | 1,009 | | | $ | — | | | Certificates of deposit | | — | | | — | | | 494 | | | — | | | U.S. government securities | | 1,236 | | | — | | | — | | | — | | | | $ | 2,728 | | | $ | (3) | | | $ | 1,503 | | | $ | — | |
The following table presents the fair values and the gross unrealized losses of these available-for-sale debt investments as of December 31, 2024, aggregated by investment category and the length of time that individual securities have been in a continuous loss position: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Less than 12 months | | 12 months or greater | | | Fair Value | | Gross Unrealized Losses | | Fair Value | | Gross Unrealized Losses | | Corporate bonds and commercial paper | | $ | 19,229 | | | $ | (28) | | | $ | — | | | $ | — | | | Certificates of deposit | | 1,722 | | | (4) | | | 248 | | | — | | | U.S. government securities | | 9,882 | | | (17) | | | — | | | — | | | | $ | 30,833 | | | $ | (49) | | | $ | 248 | | | $ | — | |
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