Director Mark Iwicki of Q32 Bio (QTTB) awarded 9,810 options at $12.64 strike

Rhea-AI Filing Summary

Q32 Bio Inc. director Mark T. Iwicki received a grant of stock options covering 9,810 shares of common stock. The options have an exercise price of $12.64 per share and expire on June 11, 2036. They vest in full on the earlier of June 12, 2027 or the company’s next annual stockholder meeting, contingent on his continued service.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Iwicki Mark T

Role null

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	9,810	$0.00	--

Holdings After Transaction: Stock Option (Right to Buy) — 9,810 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Options granted: 9,810 options Exercise price: $12.64 per share Expiration date: June 11, 2036 +2 more

5 metrics

Options granted 9,810 options Stock option grant to director on June 12, 2026

Exercise price $12.64 per share Strike price for common stock underlying options

Expiration date June 11, 2036 Final date to exercise granted options

Underlying shares 9,810 shares Common stock underlying the stock options

Vesting condition date June 12, 2027 Latest vesting date or earlier next annual meeting

Key Terms

Stock Option (Right to Buy), exercise price, expiration date, vesting, +1 more

5 terms

Stock Option (Right to Buy) financial

"security_title: Stock Option (Right to Buy)"

exercise price financial

"conversion_or_exercise_price: 12.6400"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

expiration date financial

"expiration_date: 2036-06-11T00:00:00.000Z"

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

vesting financial

"The shares underlying this option shall vest and become exercisable in full"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

annual meeting of stockholders financial

"the date of the Issuer's next annual meeting of stockholders"

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Form 4 Insider Transactions: What Each Field Means →

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^*

Iwicki Mark T

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/12/2026

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

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
Stock Option (Right to Buy)	$12.64	06/12/2026		A		9,810		(1)	06/11/2036	Common Stock	9,810	$0	9,810	D

Explanation of Responses:

1. 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.

	/s/ Eric Bell, Attorney-in-Fact	06/16/2026
	** 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)

FAQ

What did Q32 Bio (QTTB) director Mark Iwicki receive in this Form 4?

Director Mark T. Iwicki received a grant of 9,810 stock options. Each option gives him the right to buy one Q32 Bio common share at a fixed $12.64 exercise price as part of his director compensation package.

What is the exercise price of Mark Iwicki’s Q32 Bio (QTTB) stock options?

The stock options have an exercise price of $12.64 per share. This is the fixed price at which he can buy Q32 Bio common stock once the options vest and before they expire in 2036.

When do Mark Iwicki’s Q32 Bio (QTTB) options vest?

The options vest and become exercisable in full on the earlier of June 12, 2027 or Q32 Bio’s next annual stockholder meeting. Vesting is subject to his continued service as of the applicable vesting date.

When do the Q32 Bio (QTTB) stock options granted to Mark Iwicki expire?

These stock options expire on June 11, 2036. After that expiration date, any unexercised options can no longer be used to purchase Q32 Bio common shares, even if they previously vested.

Is Mark Iwicki’s Q32 Bio (QTTB) Form 4 a market purchase or sale?

This Form 4 reports a compensation-related stock option grant, not a market trade. The options were awarded at no cost and allow future purchases at $12.64, subject to vesting and the 2036 expiration date.