Mary Thistle - 12 Jun 2026 Form 4 Insider Report for Q32 Bio Inc. (QTTB)

Reporting relationship: Director
Issuer ticker: QTTB
Reported as of: 12 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 16 Jun 2026, 16:30:26 UTC
Prior SEC filing: 12 Jun 2026
Next SEC filing: 18 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Eric Bell, Attorney-in-Fact

Key filing fact

Mary Thistle filed Form 4 for Q32 Bio Inc. (QTTB) on 16 Jun 2026.

Key facts

This page summarizes Mary Thistle's Form 4 filing for Q32 Bio Inc. (QTTB).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 16 Jun 2026, 16:30.

Change

Previous filing in this sequence was filed on 12 Jun 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 0001317917 Primary reporting owner

Thistle Mary

Relationship: Director
Address: Q32 BIO INC., 830 WINTER STREET, WALTHAM
Signature: /s/ Eric Bell, Attorney-in-Fact
Signature date: 16 Jun 2026

This filing has been restated. Open the amended filing.

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

QTTB transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value
Shares: +9,810
Change %
Price: $0.000000^*
Shares after: 9,810
Date: 12 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,810
Exercise price: $12.64
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The shares underlying this option shall vest and become exercisable in full upon the earlier of (i) June 12, 2027 or (ii) the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service on such vesting date.