Shelia M. Violette - 06 Oct 2026 Form 4 Insider Report for Q32 Bio Inc. (QTTB)

Reporting relationship: Chief Scientific Officer
Issuer ticker: QTTB
Reported as of: 06 Oct 2026
Net transaction value: -$7,629
SEC form: 4
Accepted by SEC: 14 Oct 2026, 17:30:03 UTC
Prior SEC filing: 27 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Eric Bell, Attorney-in-Fact

Filing notes and source

Key filing fact

Shelia M. Violette filed Form 4 for Q32 Bio Inc. (QTTB) on 14 Oct 2026.

Key facts

This page summarizes Shelia M. Violette's Form 4 filing for Q32 Bio Inc. (QTTB).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 14 Oct 2026, 17:30.

Change

Previous filing in this sequence was filed on 27 Aug 2026.
Current net transaction value: -$7,629.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002016144 Primary reporting owner

Violette Shelia M.

Relationship: Chief Scientific Officer
Address: Q32 BIO INC., 830 WINTER STREET, WALTHAM
Signature: /s/ Eric Bell, Attorney-in-Fact
Signature date: 14 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QTTB transaction

Common Stock

Sale

Transaction value: -$7,629
Shares: -917
Change %: -0.72%
Price: $8.32
Shares after: 126,854
Date: 06 Oct 2026
Ownership: Direct
Footnotes: F1, F2

QTTB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 36,277
Date: 06 Oct 2026
Ownership: By Violette Holdings LLC
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of performance-based restricted stock units. These sales were automatic and not in the discretion of the Reporting Person.

Footnote F2

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $8.07 to $8.32. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, on request, full information regarding the number of shares sold at each separate price within the range set forth above.

Footnote F3

Shares held by Violette Holdings LLC ("Violette Holdings"). The Reporting Person is a manager of Violette Holdings and disclaims beneficial ownership of these shares except to the extent of her pecuniary interest therein, if any, and this report shall not be deemed an admission that she is the beneficial owner of such shares for purposes of Section 16 of the Exchange Act or for any other purpose.