0000950123-15-004541.txt : 20150421 0000950123-15-004541.hdr.sgml : 20150421 20150421104740 ACCESSION NUMBER: 0000950123-15-004541 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20150331 FILED AS OF DATE: 20150421 DATE AS OF CHANGE: 20150421 EFFECTIVENESS DATE: 20150421 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Matrix IX Management Co. LLC CENTRAL INDEX KEY: 0001600026 IRS NUMBER: 208155373 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-16351 FILM NUMBER: 15782368 BUSINESS ADDRESS: STREET 1: 101 MAIN STREET STREET 2: 17TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02142 BUSINESS PHONE: 617-494-1223 MAIL ADDRESS: STREET 1: 101 MAIN STREET STREET 2: 17TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02142 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001600026 XXXXXXXX 03-31-2015 03-31-2015 Matrix IX Management Co. LLC

101 MAIN STREET 17TH FLOOR Cambridge MA 02142

13F HOLDINGS REPORT 028-16351 N Timothy A. Barrows 617-494-1223 /s/ Timothy A. Barrows Cambridge MA 04-20-2015 0 1 100294 false INFORMATION TABLE 2 form13fInfoTable.xml INFORMATION TABLE FOR FORM 13F Zendesk, Inc. Common 98936J101 100294 4420171 SH SOLE 4420171 0 0