Sutro Biopharma (STRO) Shares Outstanding (2016 - 2025)

Sutro Biopharma has disclosed Shares Outstanding across 10 years of filings, most recently posting $8.6 million for Q4 2025.

• Shares Outstanding for Q4 2025 came in at $8.6 million, up 3.35% year-over-year; the trailing twelve-month figure through Dec 2025 was $8.6 million (up 3.35% YoY), and the FY2025 annual result was $8.6 million, up 3.35% from the prior year.
• Shares Outstanding came in at $8.6 million for Q4 2025 at Sutro Biopharma, down from $85.1 million in the prior quarter.
• In the past five years, Shares Outstanding ranged from a high of $85.1 million in Q3 2025 to a low of $6.2 million in Q4 2023.
• The 5-year median for Shares Outstanding is $56.1 million (2022), against an average of $53.9 million.
• Across the five-year window, Shares Outstanding soared 98.49% in 2021 and tumbled 89.3% in 2023, its largest moves.
• Sutro Biopharma's Shares Outstanding stood at $46.3 million in 2021, then advanced by 24.12% to $57.5 million in 2022, then sank by 89.3% to $6.2 million in 2023, then soared by 34.96% to $8.3 million in 2024, then gained by 3.35% to $8.6 million in 2025.
• The last three Shares Outstanding figures came in at $8.6 million (Q4 2025), $85.1 million (Q3 2025), and $84.7 million (Q2 2025), per Business Quant data.