Sutro Biopharma’s stock price surge is likely tied to the growing investors' confidence in the pipeline developments. The company is advancing a next-generation ADC pipeline led by STRO-004, a Tissue Factor–targeting candidate in early clinical development with key data expected in 2026, making it the company’s primary value driver. Beyond this lead asset, STRO-006 is set to enter the clinic in 2026, and STRO-227 (a dual-payload ADC) is on track for IND submission the same year. Parallelly, its collaboration with Astellas Pharma is progressing well, with one dual-payload ADC program already in clinical trials and another advancing through IND-enabling studies, triggering milestone payments.