---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-084932"
form_type: "8-K"
ticker: null
cik: "0001656634"
company_name: "Gritstone bio, Inc."
filed_at: "2024-04-02T23:59:59+00:00"
generated_at: "2026-06-04T03:35:11.225084+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Gritstone bio raises ~$32.5M in underwritten public offering of common stock and warrants

## Summary
- Gross proceeds of ~$32.5M from sale of 8,333,333 shares (or pre-funded warrants) plus accompanying warrants at $1.50/unit.
- Separate pre-funded warrants for up to 13,334,222 shares at $0.0001 exercise price, with accompanying warrants at $1.4999/unit.
- Underwriting agreement with TD Securities and Evercore; closing expected April 4, 2024.
- Warrants are immediately exercisable; common warrants expire in 12 months, pre-funded warrants expire when exercised in full.

## SEC filing metadata
- accession: 0001193125-24-084932
- form_type: 8-K
- cik: 0001656634
- company_name: Gritstone bio, Inc.
- filed_at: 2024-04-02T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1656634/000119312524084932/0001193125-24-084932-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1656634/000119312524084932/d819419d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-084932
- JSON: https://secwatch.observer/filing/0001193125-24-084932.json
- Plain text: https://secwatch.observer/filing/0001193125-24-084932.txt

## Key facts
- Material Agreements
  Gritstone bio, Inc. entered into Underwriting Agreement with TD Securities (USA) LLC and Evercore Group L.L.C. valued at Issuance and sale of shares and warrants; combined purchase price of $1.50 per Share and Accompanyin (effective 2024-04-01).
  - Action: entry
  - Agreement: underwriting
  - Counterparty: TD Securities (USA) LLC and Evercore Group L.L.C.
  - Value: Issuance and sale of shares and warrants; combined purchase price of $1.50 per Share and Accompanyin
  - Effective: 2024-04-01
  source text: On April 1, 2024, Gritstone bio, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with TD Securities (USA) LLC and Evercore Group L.L.C., as representatives of the several underwriters named therein (the “Underwriters”), pursuant to which the Company agreed to issue and sell (i) 8,333,333 shares of common stock (“Shares”) and accompanying common warrants (the “Accompanying Warrants”) to purchase up to 8,333,333 shares of common stock at a per share exercise price of $1.65 (the “Accompanying Warrant Shares”) (provided, however, that the purchaser may elect to exercise the Accompanying Warrants for pre-funded warrants (the “Accompanying Pre-Funded Warrants”) to purchase shares of common stock (the “Accompanying Pre-Funded Warrant Shares”) in lieu of shares of common stock at an exercise price of $1.65 minus $0.0001, the exercise price of each Accompanying Pre-Funded Warrant), at a combined purchase price of $1.50 per Share and Accompanying Warran
  evidence_url: https://www.sec.gov/Archives/edgar/data/1656634/000119312524084932/0001193125-24-084932-index.htm

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