This Amendment No. 1 (“Amendment No. 1”) to Schedule 13D amends and restates the statement on Schedule 13D originally filed on November 29, 2017 relating to the common shares, $0.001 par value (the “Common Stock”), of X4 Pharmaceuticals, Inc. (f/k/a Arsanis, Inc.) (the “Issuer”) having its principal executive office at 955 Massachusetts Avenue, 4th Floor, Cambridge, Massachusetts 02139.
This statement is being filed by:
(a) New Enterprise Associates 16, L.P. (“NEA 16”), NEA Partners 16, L.P. (“NEA Partners 16”), which is the sole general partner of NEA 16; and NEA 16 GP, LLC (“NEA 16 LLC” and, together with NEA Partners 16, the “Control Entities”), which is the sole general partner of NEA Partners 16; and
(b) Peter J. Barris (“Barris”), Forest Baskett (“Baskett”), Anthony A. Florence, Jr. (“Florence”), Mohamad H. Makhzoumi (“Makhzoumi”), Joshua Makower (“Makower”), David M. Mott (“Mott”), Scott D. Sandell (“Sandell”) and Peter W. Sonsini (“Sonsini”) (together, the “Managers”), Chetan Puttagunta (“Puttagunta”), Jon M. Sakoda (“Sakoda”) and Ravi Viswanathan (“Viswanathan”). The Managers are the managers of NEA 16 LLC.
The persons named in this Item 2 are referred to individually herein as a “Reporting Person” and collectively as the “Reporting Persons.”
The address of the principal business office of NEA 16 and each Control Entity is New Enterprise Associates, 1954 Greenspring Drive, Suite 600, Timonium, MD 21093. The address of the principal business office of each of Barris and Mott is New Enterprise Associates, 5425 Wisconsin Avenue, Suite 800, Chevy Chase, MD 20815. The address of the principal business office of Baskett, Makhzoumi, Makower, Sandell and Sonsini is New Enterprise Associates, 2855 Sand Hill Road, Menlo Park, California 94025. The address of the principal business office of Florence is New Enterprise Associates, 104 5th Avenue, 19th Floor, New York, NY 10001.
The principal business of NEA 16 is to invest in and assist growth-oriented businesses located principally in the United States. The principal business of NEA Partners 16 is to act as the sole general partner of NEA 16. The principal business of NEA 16 LLC is to act as the sole general partner of NEA Partners 16. The principal business of each of the Managers is to manage the Control Entities, NEA 16 and a number of affiliated partnerships with similar businesses.
During the five years prior to the date hereof, none of the Reporting Persons has been convicted in a criminal proceeding or has been a party to a civil proceeding ending in a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
NEA 16 LLC is a limited liability company organized under the laws of the State of Delaware. NEA 16 and NEA Partners 16 are limited partnerships organized under the laws of the State of Delaware. Each of the Managers is a United States citizen.
