SUTRO BIOPHARMA INC (STRO) Institutional Ownership and Insiders Activity

SUTRO BIOPHARMA INC (STRO) is widely held by institutional investors, with 102 firms reporting positions valued at approximately $541.89M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Perceptive Advisors Llc is the largest disclosed holder, reporting approximately $43.32M in STRO holdings in its latest filing.

Recent insider activity includes 4 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.