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CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025
Cash flows from operating activities |  |  |
Net loss | $ (13,818) | $ (8,823) |
Adjustments to reconcile net loss to net cash used in operating activities |  |  |
Depreciation expense | 318 | 124 |
Non-cash lease expense | 63 | 99 |
Stock-based compensation | 1,675 | 345 |
Change in fair value of redeemable convertible preferred stock tranche liability | 0 | 1,526 |
Interest receivable | (31) | 0 |
Changes in: |  |  |
Other receivables | (222) | (205) |
Prepaid expenses and other current assets | (805) | 157 |
Other non-current assets | (298) | (26) |
Accounts payable | 953 | (372) |
Payroll-related accruals | (1,300) | (883) |
Other current liabilities | (104) | (35) |
Lease liability | 25 | (108) |
Net cash used in operating activities | (13,544) | (8,201) |
Cash flows from investing activities |  |  |
Property and equipment | (676) | (164) |
Purchases of short-term investments | (4,000) | 0 |
Redemptions of short-term investments | 3,009 | 0 |
Net cash used in investing activities | (1,667) | (164) |
Cash flows from financing activities |  |  |
Proceeds from exercise of stock options | 55 | 100 |
Gross proceeds from issuance of redeemable convertible preferred stock | 0 | 50,010 |
Issuance costs of redeemable convertible preferred stock | 0 | (14) |
Gross proceeds from initial public offering of common stock, net of underwriting discounts and commissions | 160,425 | 0 |
Payments for deferred initial public offering costs | (2,725) | 0 |
Net cash provided by financing activities | 157,755 | 50,096 |
Net increase in cash and cash equivalents | 142,544 | 41,731 |
Cash and cash equivalents, beginning of period | 96,358 | 16,268 | $ 16,268
Cash and cash equivalents, end of period | 238,902 | 57,999 | $ 96,358
Supplemental cash flow information |  |  |
Cash paid for taxes | 0 | 4 |
Conversion of redeemable convertible preferred stock upon initial public offering | 204,537 | 0 |
Settlement of redeemable convertible preferred stock tranche liability | 0 | 4,943 |
Purchases of property and equipment included in accounts payable and other current liabilities | 296 | 36 |
Deferred offering costs included in accounts payable and other current liabilities | $ 17 | $ 0 |

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