0000899243-19-011289.txt : 20190426 0000899243-19-011289.hdr.sgml : 20190426 20190426195835 ACCESSION NUMBER: 0000899243-19-011289 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20190424 FILED AS OF DATE: 20190426 DATE AS OF CHANGE: 20190426 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Kelley Lynne E CENTRAL INDEX KEY: 0001667584 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38295 FILM NUMBER: 19773380 MAIL ADDRESS: STREET 1: 20451 SENECA MEADOWS PARKWAY CITY: GERMANTOWN STATE: MD ZIP: 20876 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: X4 Pharmaceuticals, Inc CENTRAL INDEX KEY: 0001501697 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] IRS NUMBER: 273181608 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 955 MASSACHUSETTS AVENUE STREET 2: 4TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02139 BUSINESS PHONE: 857-529-8300 MAIL ADDRESS: STREET 1: 955 MASSACHUSETTS AVENUE STREET 2: 4TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02139 FORMER COMPANY: FORMER CONFORMED NAME: Arsanis, Inc. DATE OF NAME CHANGE: 20100920 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2019-04-24 0 0001501697 X4 Pharmaceuticals, Inc XFOR 0001667584 Kelley Lynne E C/O X4 PHARMACEUTICALS, INC. 955 MASSACHUSETTS AVENUE, 4TH FLOOR CAMBRIDGE MA 02139 0 1 0 0 Chief Medical Officer Stock Option (right to buy) 20.30 2019-04-24 4 A 0 37170 0.00 A 2029-04-24 Common Stock 37170 37170 D 25% of the shares subject to the option shall vest on April 24, 2020, with the remainder vesting in equal installments of 2.083% of the shares subject to the option on the last day of each successive month thereafter for a period of 36 months, subject to the Reporting Person continuing to provide services through each such date. /s/ Adam S. Mostafa, attorney-in-fact 2019-04-26