Stockholders' Equity - Common Stock Reserved for Issuance (Details) - shares	Jun. 30, 2026	Dec. 31, 2025
Schedule Of Common Stock Reserved For Future Issuance [Line Items]
Common stock reserved for future issuance	23,671,653	20,637,459
Employee Stock Option
Schedule Of Common Stock Reserved For Future Issuance [Line Items]
Common stock reserved for future issuance	15,801,800	12,468,296
Restricted Stock Units Outstanding
Schedule Of Common Stock Reserved For Future Issuance [Line Items]
Common stock reserved for future issuance	1,279,329	1,634,519
Shares Reserved for Future Issuance
Schedule Of Common Stock Reserved For Future Issuance [Line Items]
Common stock reserved for future issuance	4,871,763	4,925,963
Apexigen Replacement Warrants
Schedule Of Common Stock Reserved For Future Issuance [Line Items]
Common stock reserved for future issuance	1,003,191	1,003,191
Employee Stock Purchase Plan
Schedule Of Common Stock Reserved For Future Issuance [Line Items]
Common stock reserved for future issuance	715,570	605,490