---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-053438"
form_type: "8-K"
ticker: null
cik: "0001656634"
company_name: "Gritstone bio, Inc."
filed_at: "2024-02-29T23:59:59+00:00"
generated_at: "2026-06-05T06:49:59.997667+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Gritstone bio cuts workforce 40%, expects $2.5M in severance costs in H1 2024

## Summary
- Workforce reduction of approximately 40% announced on February 29, 2024.
- Aggregate cash costs estimated at $2.5M, primarily for employee severance and benefits.
- Majority of costs expected to be incurred during the first half of 2024.
- Reduction aimed at reducing costs and preserving capital.

## SEC filing metadata
- accession: 0001193125-24-053438
- form_type: 8-K
- cik: 0001656634
- company_name: Gritstone bio, Inc.
- filed_at: 2024-02-29T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.05
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1656634/000119312524053438/0001193125-24-053438-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1656634/000119312524053438/d742426d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-053438
- JSON: https://secwatch.observer/filing/0001193125-24-053438.json
- Plain text: https://secwatch.observer/filing/0001193125-24-053438.txt

## Key facts
- Restructurings & Charges
  Gritstone bio, Inc. announced a restructuring with charges of approximately $2.5 million (approximately 40 percent).
  - Type: restructuring
  - Charge: approximately $2.5 million
  - Headcount: approximately 40 percent
  source text: On February 29, 2024, Gritstone bio, Inc. (the “Company”) announced a reduction in its workforce by approximately 40 percent intended to reduce costs and preserve capital. The Company expects to incur aggregate cash expenditures of approximately $2.5 million, primarily related to employee severance and benefit costs associated with the workforce reduction.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1656634/000119312524053438/0001193125-24-053438-index.htm

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