v3.26.3
Segment Reporting (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Sep. 30, 2026
USD ($)
segment
Sep. 30, 2025
USD ($)
Segment Reporting [Abstract]                
Number of reportable segments | segment             1  
Number of operating segments | segment             1  
Segment Reporting [Line Items]                
Related party license revenue $ 0     $ 1,000     $ 0 $ 1,000
Research and development 21,566     7,618     44,213 26,218
General and administrative 5,480     4,098     14,533 12,919
Expense from operations 27,046     11,716     58,746 39,137
Loss from operations (27,046)     (10,716)     (58,746) (38,137)
Other income (12)     (14)     (64) (52)
Net loss (25,203) $ (15,152) $ (14,767) (10,056) $ (12,458) $ (13,702) (55,123) (36,216)
Depreciation             2,555 2,782
Reportable Segment                
Segment Reporting [Line Items]                
Related party license revenue 0     1,000     0 1,000
Research and development 21,566     7,618     44,213 26,218
Research and development non-equity compensation 2,707     2,229     7,450 6,955
Research and development equity compensation 1,242     668     3,353 2,223
General and administrative non-equity compensation 1,413     1,288     4,235 4,005
General and administrative equity compensation 2,057     1,109     5,094 3,166
Other general and administrative including legal and accounting fees, facilities, insurance, travel and depreciation 2,010     1,701     5,204 5,748
General and administrative 5,480     4,098     14,533 12,919
Expense from operations 27,046     11,716     58,746 39,137
Loss from operations (27,046)     (10,716)     (58,746) (38,137)
Other income 1,843     660     3,623 1,921
Net loss (25,203)     (10,056)     (55,123) (36,216)
Reportable Segment | SL-325                
Segment Reporting [Line Items]                
Research and development 8,972     2,455     17,639 7,289
Reportable Segment | SL-846                
Segment Reporting [Line Items]                
Research and development 5,175     0     7,388 0
Reportable Segment | Other Research And Development                
Segment Reporting [Line Items]                
Research and development 3,470     2,266     8,383 9,751
Other research and development expense includes technical operations expense 2,000     600     4,700 1,700
Other research and development expense (primarily includes research activities for other pipeline compounds and facility expenses) 700     800     1,300 2,800
Depreciation $ 800     $ 900     $ 2,400 $ 2,700