Diyong Xu - Mar 25, 2024 Form 4 Insider Report for Homology Medicines, Inc. (QTTB)

Role: Director, 10%+ Owner
Signature: /s/ Eric Bell, Attorney-in-Fact
Stock symbol: QTTB
Transactions as of: Mar 25, 2024
Transactions value $: $0
Form type: 4
Date filed: 3/27/2024, 05:39 PM

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	QTTB	Stock Option (Right to Buy)	Award	$0	+12.8K		$0.00	12.8K	Mar 25, 2024	Common Stock	12.8K	$16.82	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	One-third of the shares underlying this option shall vest and become exercisable on March 25, 2025, with the remainder vesting in twenty-four (24) equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.
F2	Pursuant to an agreement with OrbiMed Advisors LLC and OrbiMed Capital GP VII LLC, the Reporting Person is obligated to transfer any securities issued under any such stock options or other awards, or the economic benefit thereof, to OrbiMed Advisors LLC and OrbiMed Capital GP VII LLC, which will in turn ensure that such securities or economic benefits are provided to OrbiMed Private Investments VII, LP.

Content

One-third of the shares underlying this option shall vest and become exercisable on March 25, 2025, with the remainder vesting in twenty-four (24) equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.

Pursuant to an agreement with OrbiMed Advisors LLC and OrbiMed Capital GP VII LLC, the Reporting Person is obligated to transfer any securities issued under any such stock options or other awards, or the economic benefit thereof, to OrbiMed Advisors LLC and OrbiMed Capital GP VII LLC, which will in turn ensure that such securities or economic benefits are provided to OrbiMed Private Investments VII, LP.