Shelia M. Violette - 16 Jul 2026 Form 4 Insider Report for Q32 Bio Inc. (QTTB)

Reporting relationship: Chief Scientific Officer
Issuer ticker: QTTB
Reported as of: 16 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 Jul 2026, 21:31:18 UTC
Prior SEC filing: 27 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Eric Bell, Attorney-in-Fact

Key filing fact

Shelia M. Violette filed Form 4 for Q32 Bio Inc. (QTTB) on 20 Jul 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: 20 Jul 2026, 21:31.

Change

Previous filing in this sequence was filed on 27 Feb 2026.
Current net transaction value: $0.

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: 20 Jul 2026

Reported non-derivative transactions

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

QTTB transaction

Common Stock

Award

Transaction value
Shares: +37,500
Change %: +40%
Price: $0.000000^*
Shares after: 130,569
Date: 16 Jul 2026
Ownership: Direct
Footnotes: F1

QTTB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 36,277
Date: 16 Jul 2026
Ownership: By Violette Holdings LLC
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents shares of Issuer common stock underlying performance-based restricted stock units ("PSUs") granted on July 6, 2026, which vested on July 16, 2026 with respect to a performance-based condition, upon achievement of the closing of a financing of at least $100,000,000 in gross proceeds on or before December 31, 2026. Such PSUs are also subject to a time-based condition, which provides that the PSUs shall vest in equal quarterly installments over three years from July 1, 2026, subject to the Reporting Person's continued service to the Issuer through each applicable vesting date. Each PSU represents a contingent right to receive one share of Issuer common stock.

Footnote F2

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.