Q32 Bio Inc. — Director's Dealing 2018

Mar 28, 2018

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Homology Medicines, Inc. (FIXX)
CIK: 0001661998
Period of Report: 2018-03-27

Reporting Person: ARCH Venture Fund VIII, L.P. (10% Owner)
Reporting Person: ARCH Venture Fund VIII Overage, L.P. (10% Owner)
Reporting Person: ARCH Venture Partners VIII, L.P. (10% Owner)
Reporting Person: ARCH Venture Partners VIII, LLC (10% Owner)
Reporting Person: CRANDELL KEITH (10% Owner)
Reporting Person: BYBEE CLINTON (10% Owner)
Reporting Person: NELSEN ROBERT (10% Owner)

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Series A Preferred Stock	$		Common Stock (4683238)		Indirect
Series B Preferred Stock	$		Common Stock (1385457)		Indirect

Footnotes

F1: The preferred stock is convertible into the Issuer's common stock on a one-for-one basis at the holder's election and has no expiration date. The preferred stock will automatically convert into common stock upon the closing of the Issuer's initial public offering.

F2: Includes 669,034 and 4,014,204 shares of Series A Preferred Stock held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Fund Overage") and ARCH Venture Fund VIII, L.P. ("ARCH Fund VIII"), respectively.

F3: Includes 527,793 and 857,664 shares of Series B Preferred Stock held by ARCH Fund Overage and ARCH Fund VIII, respectively.

F4: The sole general partner of ARCH Fund VIII is ARCH Venture Partners VIII, L.P. ("ARCH Partners VIII"). The sole general partner of ARCH Partners VIII and ARCH Fund Overage is ARCH Venture Partners VIII, LLC ("ARCH VIII LLC"). ARCH Partners VIII may therefore be deemed to beneficially own the securities held by ARCH Fund VIII and ARCH VIII LLC may be deemed to beneficially own the securities held by ARCH Fund VIII and ARCH Fund Overage. ARCH Partners VIII and ARCH VIII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VIII LLC are Keith L. Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by ARCH Fund VIII and ARCH Fund Overage. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.