<SEC-DOCUMENT>0001193125-19-103832-index.html : 20190411 <SEC-HEADER>0001193125-19-103832.hdr.sgml : 20190411 <ACCEPTANCE-DATETIME>20190411160057 ACCESSION NUMBER: 0001193125-19-103832 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 11 CONFORMED PERIOD OF REPORT: 20190411 ITEM INFORMATION: Other Events ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20190411 DATE AS OF CHANGE: 20190411 FILER: 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 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-38295 FILM NUMBER: 19743792 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 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>d733375d8k.htm <DESCRIPTION>FORM 8-K <TEXT> Document 1 - file: d733375d8k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-10.1 <SEQUENCE>2 <FILENAME>d733375dex101.htm <DESCRIPTION>EX-10.1 <TEXT> Document 2 - file: d733375dex101.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>3 <FILENAME>d733375dex991.htm <DESCRIPTION>EX-99.1 <TEXT> Document 3 - file: d733375dex991.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.2 <SEQUENCE>4 <FILENAME>d733375dex992.htm <DESCRIPTION>EX-99.2 <TEXT> Document 4 - file: d733375dex992.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g733375dsp10.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g733375dsp10.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g733375g0408110449002.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: g733375g0408110449002.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g733375g0408110449096.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: g733375g0408110449096.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g733375g0408110449205.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g733375g0408110449205.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g733375g0408110449314.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g733375g0408110449314.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>g733375g20h31.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: g733375g20h31.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>g733375g30u90.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: g733375g30u90.jpg
</DOCUMENT> </SEC-DOCUMENT>