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Sutro Biopharma Inc

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What Do They Do?

Develops antibody-drug conjugates for cancer treatment and uses its cell-free protein-making and conjugation platforms in collaborations with pharmaceutical and biotechnology companies.

How Do They Make Money?

Partners pay for licenses upfront, milestone fees when development or regulatory targets are reached, and royalties on approved product sales; research and development services earn revenue as Sutro performs the work.

FY2025 revenue

Who Are Their Customers?

Pharmaceutical and biotechnology companies work with Sutro through product-focused oncology collaborations; Vaxcyte uses its platforms for vaccine development and receives technical support.

Do Revenues Turn Into Profits?

No. It lost $191.1M in FY2025.

Operating income, FY2025
−155% of revenue
▼ −34% (Loss) vs FY2024 (−$238.5M, −384%)
Net income, FY2025
−186% of revenue
▼ −16% (Loss) vs FY2024 (−$227.5M, −367%)

How Are They Changing?

Since the FY2025 annual report
Latest quarter: Q2 FY2026, the three months to Jun 30, 2026
Revenue
▼ −85%
vs $63.7M in Q2 FY2025
Net income
▲ +235% (Loss)
vs −$11.5M in Q2 FY2025

Growing. Revenue grew 66% in 4 years, from $61.9M in FY2021 to $102.5M in FY2025, about 13% a year.

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