Q32 Bio (FIXX) CSO logs automatic sale of 2,798 shares

Rhea-AI Filing Summary

Q32 Bio Inc. (FIXX) reported that Chief Scientific Officer Shelia M. Violette had an automatic sale of 2,798 shares of common stock on 2026-08-25 at $16.56 per share. The shares were sold to cover tax withholding obligations arising from the vesting of restricted stock units and were not sold at her discretion. Following this transaction, she holds 127,771 shares directly and has 36,277 shares reported as indirectly held through Violette Holdings LLC, for which she disclaims beneficial ownership except to the extent of any pecuniary interest.

Insider Trade Summary

Net Seller: 2,798 shares

Net Sell 2 txns

Insider Violette Shelia M.

Role Chief Scientific Officer

Sold 2,798 shs ($46K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	2,798	$16.56	$46K
holding	Common Stock F2	--	--	--

Holdings After Transaction: Common Stock — 127,771 shares (Direct); Common Stock — 36,277 shares (Indirect, By Violette Holdings LLC)

Footnotes (2)

1. F1. Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. These sales were automatic and not in the discretion of the Reporting Person.
2. 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.

Key Figures

Shares sold: 2,798 shares of Common Stock Sale price per share: $16.56 per share Direct holdings after transaction: 127,771 shares of Common Stock +2 more

5 metrics

Shares sold 2,798 shares of Common Stock Automatic sale on 2026-08-25 to cover tax withholding obligations

Sale price per share $16.56 per share Price for 2,798 shares of Common Stock sold on 2026-08-25

Direct holdings after transaction 127,771 shares of Common Stock Direct ownership reported for Shelia M. Violette following the sale

Indirect holdings 36,277 shares of Common Stock Indirectly held by Violette Holdings LLC with beneficial ownership disclaimed except for any pecuniary interest

Net shares sold 2,798 shares Net sell direction across reported non-derivative transactions

Key Terms

restricted stock units, tax withholding obligations, disclaims beneficial ownership, pecuniary interest

4 terms

restricted stock units financial

"in connection with the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"shares required to be sold ... to cover tax withholding obligations"

disclaims beneficial ownership financial

"The Reporting Person ... disclaims beneficial ownership of these shares"

pecuniary interest financial

"except to the extent of her pecuniary interest therein, if any"

FAQ

What insider transaction did Q32 Bio Inc. (FIXX) disclose for Shelia M. Violette?

The company disclosed that Chief Scientific Officer Shelia M. Violette had an automatic sale of 2,798 Q32 Bio Inc. common shares on 2026-08-25 at $16.56 per share to cover tax withholding obligations from RSU vesting.

Was the FIXX share sale by Shelia M. Violette part of a discretionary trade?

No. The filing states the 2,798 shares were sold automatically to satisfy tax withholding obligations in connection with restricted stock unit vesting and that these sales were not in her discretion.

How many FIXX shares does Shelia M. Violette hold directly after this Form 4 transaction?

After the reported sale, Shelia M. Violette directly holds 127,771 shares of Q32 Bio Inc. common stock, according to the Form 4 data.

What indirect FIXX holdings are associated with Shelia M. Violette?

The filing reports 36,277 Q32 Bio Inc. shares held indirectly through Violette Holdings LLC. Shelia M. Violette is a manager of this entity and disclaims beneficial ownership of these shares except for any pecuniary interest.

How many FIXX shares were sold in total in this Form 4 filing?

The Form 4 reports a single sale transaction of 2,798 Q32 Bio Inc. common shares at $16.56 per share on 2026-08-25, entirely to cover tax withholding obligations tied to RSU vesting.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/28/2026 - 09:02 AM Accepted by SEC EDGAR 08/27/2026 - 04:10 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Violette Shelia M.

(Last) (First) (Middle)

Q32 BIO INC.

830 WINTER STREET

(Street)

WALTHAM MASSACHUSETTS 02451

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Q32 Bio Inc. [ QTTB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Scientific Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/25/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/25/2026		S(1)		2,798	D	$16.56	127,771	D
Common Stock								36,277	I	By Violette Holdings LLC(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

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

2. 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.

	/s/ Eric Bell, Attorney-in-Fact	08/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)