---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-119771"
form_type: "8-K"
ticker: null
cik: "0001656634"
company_name: "Gritstone bio, Inc."
filed_at: "2024-04-29T23:59:59+00:00"
generated_at: "2026-06-03T05:37:29.969678+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Gritstone bio director Steve Krognes not standing for re-election; Stephen Webster appointed

## Summary
- Steve Krognes to not stand for re-election at June 17, 2024 annual meeting; no disagreement cited.
- Stephen Webster appointed as Class I director effective April 26, 2024, term expiring 2025.
- Webster joins Audit and Compensation Committees; to become Audit Chair after Krognes' term ends.
- Webster receives standard director compensation: $40k cash retainer plus option for 103,600 shares vesting over 3 years.

## SEC filing metadata
- accession: 0001193125-24-119771
- form_type: 8-K
- cik: 0001656634
- company_name: Gritstone bio, Inc.
- filed_at: 2024-04-29T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1656634/000119312524119771/0001193125-24-119771-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1656634/000119312524119771/d782673d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-119771
- JSON: https://secwatch.observer/filing/0001193125-24-119771.json
- Plain text: https://secwatch.observer/filing/0001193125-24-119771.txt

## Key facts
- Executive change
  Stephen W. Webster was appointed as Director at Gritstone bio, Inc..
  - Action: appointed
  - Role: Director
  source text: On April 26, 2024, upon the recommendation of the Nominating and Corporate Governance Committee of the Board, the Board appointed Stephen W. Webster as a director of the Company, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1656634/000119312524119771/0001193125-24-119771-index.htm

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