---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-177178"
form_type: "8-K"
ticker: "QTTB"
cik: "0001661998"
company_name: "Q32 Bio Inc."
filed_at: "2026-04-24T23:59:59+00:00"
generated_at: "2026-05-15T04:12:38.270345+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Q32 Bio launches $75M ATM equity offering after exhausting prior $14.2M program

## Summary
- Company sold all $14.2M from prior ATM program; offering terminated as of April 24, 2026.
- New prospectus supplement filed for up to $75M in common stock via Cantor Fitzgerald.
- Shares offered under effective shelf registration statement (Form S-3, filed April 2025).
- Goodwin Procter LLP issued legal opinion on the additional shares (Exhibit 5.1).
- No offer or sale in jurisdictions where unregistered or unlawful.

## SEC filing metadata
- accession: 0001193125-26-177178
- form_type: 8-K
- ticker: QTTB
- cik: 0001661998
- company_name: Q32 Bio Inc.
- filed_at: 2026-04-24T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1661998/000119312526177178/0001193125-26-177178-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1661998/000119312526177178/d31430d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-177178
- JSON: https://secwatch.observer/filing/0001193125-26-177178.json
- Plain text: https://secwatch.observer/filing/0001193125-26-177178.txt

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