---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-238117"
form_type: "8-K"
ticker: null
cik: "0001656634"
company_name: "Gritstone bio, Inc."
filed_at: "2024-10-16T23:59:59+00:00"
generated_at: "2026-05-30T13:45:14.836691+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 1.0
calibrated_materiality_score: 1.0
confidence: "high"
source: SEC EDGAR
---

# Gritstone bio files Chapter 11, cuts 19% of workforce, receives Nasdaq delisting notice

## Summary
- Filed voluntary Chapter 11 petition on Oct 10, 2024 in Delaware bankruptcy court.
- Announced termination of ~25 employees (19% reduction) effective Nov 15, with 30-day severance.
- Expects one-time charge of ~$0.3M in Q4 2024 primarily for severance payments.
- Nasdaq notified company of delisting due to Chapter 11; trading suspended Oct 22, 2024.
- Company will not appeal Nasdaq's delisting determination.

## SEC filing metadata
- accession: 0001193125-24-238117
- form_type: 8-K
- cik: 0001656634
- company_name: Gritstone bio, Inc.
- filed_at: 2024-10-16T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 1.0
- calibrated_materiality_score: 1.0
- confidence: high
- sec_items: 2.05, 3.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1656634/000119312524238117/0001193125-24-238117-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1656634/000119312524238117/d773987d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-238117
- JSON: https://secwatch.observer/filing/0001193125-24-238117.json
- Plain text: https://secwatch.observer/filing/0001193125-24-238117.txt

## Key facts
- Restructurings & Charges
  Gritstone bio, Inc. announced a restructuring with charges of approximately $0.3 million (approximately 25 employees).
  - Type: restructuring
  - Charge: approximately $0.3 million
  - Headcount: approximately 25 employees
  source text: and salary, all earned but unused paid time off, and a severance payment that is equal to 30 days of employment. The Company expects to record a one-time charge of approximately $0.3 million related to the reduction in its workforce, consistent primarily of one-time severance payments upon termination of the employees. The Company expects that the majority of these
  evidence_url: https://www.sec.gov/Archives/edgar/data/1656634/000119312524238117/0001193125-24-238117-index.htm

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