---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-040254"
form_type: "8-K"
ticker: "IOBTQ"
cik: "0001865494"
company_name: "IO Biotech, Inc."
filed_at: "2023-02-15T23:59:59+00:00"
generated_at: "2026-06-19T12:07:31.197982+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# IO Biotech launches $19.5M ATM equity program with Cowen, up to $75M total

## Summary
- Filed prospectus supplement for at-the-market offering of common stock up to $19.5 million.
- Sales agreement with Cowen and Company allows additional sales up to $75 million aggregate.
- Proceeds to fund preclinical studies, clinical trials, product acquisitions, and working capital.
- Cowen receives 3% commission on gross sales; shares sold through Nasdaq or other markets.

## SEC filing metadata
- accession: 0001193125-23-040254
- form_type: 8-K
- ticker: IOBTQ
- cik: 0001865494
- company_name: IO Biotech, Inc.
- filed_at: 2023-02-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1865494/000119312523040254/0001193125-23-040254-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1865494/000119312523040254/d264518d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-040254
- JSON: https://secwatch.observer/filing/0001193125-23-040254.json
- Plain text: https://secwatch.observer/filing/0001193125-23-040254.txt

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