Skip to content
Baker Capital StrategiesMARKETS. FILINGS. PERSPECTIVE.
Powered by THEMA

BAKER CAPITAL STRATEGIES

Get the free weekly BCS email.

Selected company filings and market updates, delivered by email. Your first report will follow soon.

  • Your weekly BCS reportMarket updates and links to filings you can explore.
  • THEMA at launchWe’ll send directions for setting up your filing alerts when THEMA officially opens.

One signup for the weekly email and your free THEMA Basic account at launch.

Already registered or a CSW member?Log in to THEMA →

At least 8 characters. This also creates your free THEMA account for launch.

You’re signing up for the weekly BCS email and THEMA launch/setup updates. Unsubscribe using the link in any email. Privacy policy · Terms

BCS

Changes in Beneficial Ownership · 4

Q32 Bio Inc.

QTTBNASDAQEQUITYCurrent

Changes in Beneficial Ownership

Filed Oct 14, 2026Accepted Oct 14, 2026, 5:30 PM EDTFiling CIK 1661998Accession 0001193125-26-421834
Share

Structured filing — 4

ownership.xml

Open full document ↗

Filing details

Report period
2026-10-06
Issuer
Q32 Bio Inc.
Issuer CIK
0001661998
Trading symbol
QTTB

Reporting owner 1

Name
Kalowski Lee
Reporting owner CIK
0001618273
Relationship
Officer
Officer title
CFO and President
Address
Q32 BIO INC., 830 WINTER STREET, WALTHAM, MA, 02451

Non-derivative transactions

Non-derivative transactions · 1 reported row
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnership
Common Stock2026-10-06S · Form 4[F1]1,301D8.3198[F2]137,170D
Table key
S · Form 4
Sale on the market or privately
D
Direct

Footnotes

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.↩ 1
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.↩ 1

Signature 1

Signed
/s/ Eric Bell, Attorney-in-Fact
Date
2026-10-14

Company context

Q32 Bio is a clinical-stage biotechnology company whose science targets potent regulators of the adaptive immune system to re-balance immunity and is focused on developing innovative therapies for alopecia areata and other autoimmune and inflammatory diseases. About 700,000 people in the United States live with alopecia areata1, a disease which has a life-altering impact on patients and limited current treatment options. Q32 Bio is advancing bempikibart (ADX-914), a fully human anti-IL-7Rα antibody that re-regulates adaptive immune function, for the treatment of alopecia areata in an ongoing Phase 2 program. The IL-7 and TSLP pathways have been genetically and biologically implicated in driving several T cell-mediated pathological processes in numerous autoimmune diseases.

Current securities

Recent company filings

  1. 4 filingOct 14, 2026
  2. Regulation FD Disclosure · Other EventsSep 30, 2026
  3. Regulation FD Disclosure · Other EventsSep 14, 2026
  4. SCHEDULE 13G/A - filed by Sirenia Capital Management LP regarding Q32 Bio Inc.Aug 14, 2026
  5. 10-Q filingAug 5, 2026

Privacy choices

BCS measures page use with Google Analytics using regional consent settings. You can change your preference here. Charts and market data remain available.

Essential functions — always available. Security, navigation, registration and remembering these choices.

Audience analytics

Analytics cookies are off by default for visitors Google identifies in the EEA, UK or Switzerland until allowed. Limited measurement without analytics cookies may still occur under those regional defaults.

TradingView charts, quotes and the economic calendar load automatically as page content. TradingView receives network and browser information and may collect its own usage analytics. This choice controls BCS’s Google Analytics only.

Google advertising is not enabled. Direct sponsor links do not load advertising trackers on BCS.

Turning analytics off stops future Google Analytics activity here. It does not erase information already received by the provider. Read the privacy policy.