v3.26.1
Segment Reporting (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Segment Reporting [Abstract]            
Number of reportable segments | segment         1  
Number of operating segments | segment         1  
Segment Reporting [Line Items]            
Revenue $ 0   $ 0   $ 0 $ 0
Research and development 11,700   8,680   22,646 18,599
General and administrative 4,455   4,352   9,053 8,822
Expense from operations 16,155   13,032   31,699 27,421
Loss from operations (16,155)   (13,032)   (31,699) (27,421)
Other income (26)   (230)   (52) (155)
Net loss (15,152) $ (14,767) (12,458) $ (13,702) (29,919) (26,160)
Depreciation         1,742 1,865
Reportable Segment            
Segment Reporting [Line Items]            
Revenue 0   0   0 0
Research and development 11,700   8,680   22,646 18,599
Research and development non-equity compensation 2,360   2,331   4,742 4,727
Research and development equity compensation 1,075   867   2,112 1,555
General and administrative non-equity compensation 1,397   1,365   2,823 2,718
General and administrative equity compensation 1,658   1,023   3,036 2,056
Other general and administrative including legal and accounting fees, facilities, insurance, travel and depreciation 1,400   1,964   3,194 4,048
General and administrative 4,455   4,352   9,053 8,822
Expense from operations 16,155   13,032   31,699 27,421
Loss from operations (16,155)   (13,032)   (31,699) (27,421)
Other income 1,003   574   1,780 1,261
Net loss (15,152)   (12,458)   (29,919) (26,160)
Reportable Segment | SL-325            
Segment Reporting [Line Items]            
Research and development 4,107   2,604   8,666 4,833
Reportable Segment | SL-846            
Segment Reporting [Line Items]            
Research and development 1,679   0   2,213 0
Reportable Segment | Other Research And Development            
Segment Reporting [Line Items]            
Research and development 2,479   2,878   4,913 7,484
Other research and development expense includes technical operations expense 1,200   700   2,700 1,100
Other research and development expense (primarily includes research activities for other pipeline compounds and facility expenses) 800   700   1,300 2,000
Depreciation $ 800   $ 900   $ 1,700 $ 1,800