---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-071335"
form_type: "8-K"
ticker: "STRO"
cik: "0001382101"
company_name: "SUTRO BIOPHARMA, INC."
filed_at: "2024-06-10T23:59:59+00:00"
generated_at: "2026-06-01T05:15:57.576219+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Sutro Biopharma stockholders elect Lobacki, Petree; ratify EY; approve say-on-pay & ESPP amendment

## Summary
- Joseph M. Lobacki re-elected with 49.6M shares For (1.4M Withheld); Daniel H. Petree re-elected with 33.4M For (17.6M Withheld).
- Ernst & Young ratified as independent auditor for FY 2024: 64.6M For, 118.9K Against, 161.9K Abstain.
- Non-binding advisory approval of named executive officer compensation: 50.2M For, 171.2K Against, 587.3K Abstain.
- Amendment to 2018 Employee Stock Purchase Plan approved: 50.2M For, 618.7K Against, 129.4K Abstain (increase share limit + clarifying revisions).

## SEC filing metadata
- accession: 0000950170-24-071335
- form_type: 8-K
- ticker: STRO
- cik: 0001382101
- company_name: SUTRO BIOPHARMA, INC.
- filed_at: 2024-06-10T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1382101/000095017024071335/0000950170-24-071335-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1382101/000095017024071335/stro-20240606.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-071335
- JSON: https://secwatch.observer/filing/0000950170-24-071335.json
- Plain text: https://secwatch.observer/filing/0000950170-24-071335.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.