Q32 Bio (FIXX) CEO’s automatic tax sale leaves 343,259 shares

Rhea-AI Filing Summary

Q32 Bio Inc. (FIXX) director and CEO Jodie Pope Morrison reported a sale of 9,845 shares of common stock on August 25, 2026, at $16.56 per share. According to the disclosure, the shares were sold automatically to cover tax withholding obligations arising from vesting restricted stock units, not at the reporting person’s discretion. Following this transaction, Morrison directly holds 343,259 shares of Q32 Bio common stock.

Insider Trade Summary

Net Seller: 9,845 shares

Net Sell 1 txn

Insider Morrison Jodie Pope

Role CEO

Sold 9,845 shs ($163K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	9,845	$16.56	$163K

Holdings After Transaction: Common Stock — 343,259 shares (Direct)

Footnotes (1)

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.

Key Figures

Shares sold: 9,845 shares of Common Stock Sale price per share: $16.56 per share Shares held after transaction: 343,259 shares

3 metrics

Shares sold 9,845 shares of Common Stock Sale on August 25, 2026 by CEO Jodie Pope Morrison

Sale price per share $16.56 per share Price for the 9,845 FIXX shares sold on August 25, 2026

Shares held after transaction 343,259 shares Direct FIXX common stock holdings of CEO after the sale

Key Terms

restricted stock units, tax withholding obligations, open market or private transaction

3 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

"sold by the Reporting Person to cover tax withholding obligations"

open market or private transaction financial

"Sale in open market or private transaction"

FAQ

What insider transaction did FIXX report for CEO Jodie Morrison?

FIXX reported that CEO Jodie Pope Morrison sold 9,845 shares of common stock on August 25, 2026, at $16.56 per share. The sale was to cover tax withholding obligations related to vesting restricted stock units and was automatic rather than discretionary.

How many FIXX shares does CEO Jodie Morrison hold after this Form 4 transaction?

After the reported transaction, CEO Jodie Pope Morrison holds 343,259 shares of FIXX common stock directly. This figure reflects her position following the 9,845-share sale disclosed for August 25, 2026.

Was the FIXX insider sale by CEO Jodie Morrison part of a discretionary trade?

No. The filing states the 9,845 FIXX shares were sold to satisfy tax withholding obligations upon vesting of restricted stock units, and that the sales were automatic and not in the discretion of the reporting person.

What was the price per share in the FIXX insider sale on August 25, 2026?

The reported sale price for the FIXX insider transaction on August 25, 2026 was $16.56 per share for the 9,845 common shares sold by CEO Jodie Pope Morrison.

What type of security did FIXX’s CEO sell in this Form 4 filing?

The transaction involved FIXX Common Stock. CEO Jodie Pope Morrison sold 9,845 shares of common stock on August 25, 2026, in an automatic sale to cover tax withholding obligations from vesting restricted stock units.

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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^*

Morrison Jodie Pope

(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)

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

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)		9,845	D	$16.56	343,259	D

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.

	/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)