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Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2026
Segment Reporting [Abstract] |
Schedule Of Segment Loss Significant Segment Expenses | The following table represents information about segment loss and significant segment expenses (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Direct research and development expenses by program: |  |  |  |  |  |  |  |  |  |  |  |
AP01 |  | $ | 13,600 |  |  | $ | 12,520 |  |  | $ | 26,755 |  |  | $ | 23,459 |
AP02 |  |  | 4,969 |  |  |  | 1,372 |  |  |  | 9,688 |  |  |  | 2,101 |
AP03 |  |  | 832 |  |  |  | 522 |  |  |  | 1,060 |  |  |  | 873 |
Unallocated research and development expenses: |  |  |  |  |  |  |  |  |  |  |  |
Personnel-related (excluding stock-based compensation) |  |  | 3,878 |  |  |  | 2,907 |  |  |  | 7,941 |  |  |  | 5,774 |
Facility and information technology allocated expenses and other research and development costs |  |  | 468 |  |  |  | 386 |  |  |  | 788 |  |  |  | 656 |
General and administrative expenses: |  |  |  |  |  |  |  |  |  |  |  |
Personnel-related (excluding stock-based compensation) |  |  | 2,542 |  |  |  | 1,707 |  |  |  | 4,822 |  |  |  | 3,166 |
Facility expenses and information technology |  |  | 528 |  |  |  | 144 |  |  |  | 821 |  |  |  | 291 |
General corporate expenses and professional fees |  |  | 1,573 |  |  |  | 1,080 |  |  |  | 3,168 |  |  |  | 2,482 |
Other segment items (1) |  |  | 545 |  |  |  | (447 | ) |  |  | 761 |  |  |  | (1,108 | )
Net loss |  | $ | 28,935 |  |  | $ | 20,191 |  |  | $ | 55,804 |  |  | $ | 37,694 |
(1) For the three months ended June 30, 2026 and 2025, other segment items consist of $2.5 million and $1.1 million of interest income, respectively, $0.2 million and $0.4 million of accretion of marketable securities, respectively, $2.8 million and $1.1 million of stock-based compensation expense, respectively, $0.3 million and zero of interest expense, respectively, and $178 thousand and $50 thousand of depreciation expense and other expenses, respectively. For the six months ended June 30, 2026 and 2025, other segment items consist of $3.4 million and $1.8 million of interest income, respectively, $0.4 million and $1.0 million accretion of marketable securities, respectively, $4.0 million and $1.7 million of stock-based compensation expense, respectively, $0.4 million and zero of interest expense, respectively, and $228 thousand and $94 thousand of depreciation expense and other expenses, respectively.

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- Definition Tabular disclosure of reconciliation of profit (loss) by reportable segment to consolidated profit (loss). Includes, but is not limited to, reconciliation of income (loss) before income tax expense (benefit) and after income tax if income tax is allocated to reportable segment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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