Lee Kalowski - 06 Oct 2026 Form 4 Insider Report for Q32 Bio Inc. (QTTB)

Reporting relationship: CFO and President
Issuer ticker: QTTB
Reported as of: 06 Oct 2026
Net transaction value: -$10,824
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

Lee Kalowski filed Form 4 for Q32 Bio Inc. (QTTB) on 14 Oct 2026.

Key facts

This page summarizes Lee Kalowski'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: -$10,824.

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 0001618273 Primary reporting owner

Kalowski Lee

Relationship: CFO and President
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: -$10,824
Shares: -1,301
Change %: -0.94%
Price: $8.32
Shares after: 137,170
Date: 06 Oct 2026
Ownership: Direct
Footnotes: F1, 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 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 $8.08 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.