---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-326821"
form_type: "8-K"
ticker: "QTTB"
cik: "0001661998"
company_name: "Q32 Bio Inc."
filed_at: "2025-12-19T23:59:59+00:00"
generated_at: "2026-05-16T12:35:17.685255+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Q32 Bio director Mark Iwicki withdraws resignation, remains Board Chair and committee member

## Summary
- Mark Iwicki had previously notified intention to resign from Board effective Dec 31, 2025 to focus on CEO role at Inhibikase Therapeutics.
- On Dec 17, 2025, Iwicki withdrew resignation with full Board support, effective immediately, citing reduced board commitments.
- He will continue as Chair of the Board and Compensation Committee, and as a member of the Audit Committee.

## SEC filing metadata
- accession: 0001193125-25-326821
- form_type: 8-K
- ticker: QTTB
- cik: 0001661998
- company_name: Q32 Bio Inc.
- filed_at: 2025-12-19T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1661998/000119312525326821/0001193125-25-326821-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1661998/000119312525326821/d29360d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-326821
- JSON: https://secwatch.observer/filing/0001193125-25-326821.json
- Plain text: https://secwatch.observer/filing/0001193125-25-326821.txt

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