| Balance Sheet Components |
5. Balance Sheet Components Investments The fair value of the Company’s available-for-sale investments and restricted cash as of March 31, 2026 and December 31, 2025 are as follows (in thousands): | | | | | | | | | | | | | March 31, 2026 | | | Amortized | | | Gross Unrealized | | | Estimated | | Cost | | Gains | | Losses | | | Fair Value | Assets | | | | | | | | | | | | Money market funds, included in cash equivalents | $ | 1,348 | | $ | — | | $ | — | | $ | 1,348 | Money market funds, included in restricted cash, non-current | | 4,702 | | | — | | | — | | | 4,702 | U.S. government securities | | 81,500 | | | — | | | (78) | | | 81,422 | U.S. treasury bills | | 19,864 | | | 1 | | | — | | | 19,865 | Corporate bonds/notes | | 63,517 | | | — | | | (153) | | | 63,364 | Agency bonds/notes | | 44,137 | | | — | | | (108) | | | 44,029 | Asset-backed securities | | 21,638 | | | — | | | (25) | | | 21,613 | Commercial paper | | 4,935 | | | — | | | (1) | | | 4,934 | Total | $ | 241,641 | | $ | 1 | | $ | (365) | | $ | 241,277 | | | | | | | | | | | | | Classified as: | | | | | | | | | | | | Cash equivalents | | | | | | | | | | $ | 1,348 | Short-term investments | | | | | | | | | | | 138,645 | Long-term investments | | | | | | | | | | | 96,582 | Restricted cash | | | | | | | | | | | 4,702 | Total | | | | | | | | | | $ | 241,277 |
| December 31, 2025 | | | Amortized | | | Gross Unrealized | | | Estimated | | Cost | | Gains | | Losses | | | Fair Value | Assets | | | | | | | | | | | | Money market funds, included in cash equivalents | $ | 27,806 | | $ | — | | $ | — | | $ | 27,806 | Money market funds, included in restricted cash, non-current | | 4,709 | | | — | | | — | | | 4,709 | U.S. government securities | | 81,385 | | | 94 | | | — | | | 81,479 | U.S. treasury bills | | 39,568 | | | 25 | | | | | | 39,593 | Corporate bonds/notes | | 57,564 | | | 19 | | | (12) | | | 57,571 | Agency bonds/notes | | 25,147 | | | 7 | | | (3) | | | 25,151 | Asset-backed securities | | 21,689 | | | 22 | | | — | | | 21,711 | Commercial paper | | 9,868 | | | 2 | | | — | | | 9,870 | Total | $ | 267,736 | | $ | 169 | | $ | (15) | | $ | 267,890 | | | | | | | | | | | | | Classified as: | | | | | | | | | | | | Cash equivalents | | | | | | | | | | $ | 27,806 | Short-term investments | | | | | | | | | | | 132,010 | Long-term investments | | | | | | | | | | | 103,365 | Restricted cash | | | | | | | | | | | 4,709 | Total | | | | | | | | | | $ | 267,890 |
The following table summarizes the fair value of the Company’s cash equivalents, and available-for-sale investments classified by maturity as of March 31, 2026 (in thousands): | | | | | | | March 31, 2026 | | December 31, 2025 | Amounts maturing within one year | $ | 139,993 | | $ | 159,816 | Amounts maturing after one year through two years | | 96,582 | | | 103,365 | Total | $ | 236,575 | | $ | 263,181 |
Available-for-sale investments held as of March 31, 2026 and December 31, 2025 had a weighted average days to maturity of 325 days and 346 days, respectively. The following table presents the Company’s available-for-sale investments that were in an unrealized loss position as of March 31, 2026 and December 31, 2025 (in thousands): | | | | | | | | | | | | | March 31, 2026 | | December 31, 2025 | | Less than 12 months | | Less than 12 months | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | Assets | | | | | | | | | | | | U.S. government securities | $ | 566 | | $ | (78) | | $ | — | | $ | — | Corporate bonds/notes | | 413 | | | (153) | | | 26,716 | | | (12) | Agency bonds/notes | | 389 | | | (108) | | | 3,995 | | | (3) | Asset-backed securities | | 47 | | | (25) | | | — | | | — | Commercial paper | | — | | | (1) | | | — | | | — | Total | $ | 1,415 | | $ | (365) | | $ | 30,711 | | $ | (15) |
As of March 31, 2026 and December 31, 2025, unrealized losses on the Company’s available-for-sale investments were primarily attributable to changes in interest rates and were not due to credit risk. The Company intends to hold these investments to maturity and no allowance for credit loss was recorded as of March 31, 2026 and December 31, 2025. There were no available-for-sale investments in an unrealized loss position greater than twelve months as of March 31, 2026 or December 31, 2025. Allowance for Credit Losses The following table presents a reconciliation of the allowance for credit losses (in thousands): | | | | | | | | | | | | | March 31, | | December 31, | | 2026 | | 2025 | Balance at beginning of period | $ | 626 | | $ | 814 | Additions | | — | | | — | Write-offs | | — | | | (188) | Balance at end of period | $ | 626 | | $ | 626 |
Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets are comprised of the following (in thousands): | | | | | | | | | | | | | | | | | | | March 31, | | December 31, | | 2026 | | 2025 | Prepaid expenses | $ | 8,313 | | $ | 5,964 | Contract costs, current | | 8,202 | | | 6,669 | Other | | 1,472 | | | 1,442 | Total prepaid expenses and other current assets | $ | 17,987 | | $ | 14,075 |
Property and equipment, net Property and equipment consisted of the following (in thousands): | | | | | | | | | | | | | March 31, | | December 31, | | 2026 | | 2025 | Property and equipment at cost: | | | | | | Computer equipment and software | $ | 4,277 | | $ | 4,223 | Furniture, fixtures and equipment | | 2,280 | | | 2,114 | Capitalized internal-use software | | 13,624 | | | 12,529 | Leasehold improvements | | 2,095 | | | 2,086 | Construction in progress | | 1,481 | | | 140 | Total property and equipment | | 23,757 | | | 21,092 | Less: Accumulated depreciation and amortization | | (13,928) | | | (12,505) | Property and equipment, net | $ | 9,829 | | $ | 8,587 |
The Company capitalized certain internal-use software costs totaling $1.1 million and $936,000, including stock-based compensation of $6,000 and $6,000, related to internal-use software development efforts, during the three months ended March 31, 2026 and 2025, respectively. Amortization of capitalized internal-use software totaled $1.1 million and $1.0 million for the three months ended March 31, 2026 and 2025, respectively. Depreciation and amortization expense related to property and equipment, excluding capitalized internal-use software, was $359,000 and $370,000 for three months ended March 31, 2026 and 2025, respectively. Other Non-Current Assets Other non-current assets are comprised of the following (in thousands): | | | | | | | | | | | | | March 31, | | December 31, | | 2026 | | 2025 | Contract costs, net | $ | 5,071 | | $ | 4,260 | Other | | 1,604 | | | 839 | Total other non-current assets | $ | 6,675 | | $ | 5,099 |
Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities are comprised of the following (in thousands): | | | | | | | | | | | | | March 31, | | December 31, | | 2026 | | 2025 | Accrued payroll and related expenses | $ | 19,762 | | $ | 28,150 | Customer contract and rebate liabilities | | 1,583 | | | 1,162 | Accrued royalty | | 1,049 | | | 864 | Accrued professional fees | | 821 | | | 627 | Accrued clinical trial expenses | | 1,118 | | | 550 | Other | | 1,553 | | | 1,926 | | $ | 25,886 | | $ | 33,279 |
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