0001132716-19-000019.txt : 20191114 0001132716-19-000019.hdr.sgml : 20191114 20191114170601 ACCESSION NUMBER: 0001132716-19-000019 CONFORMED SUBMISSION TYPE: 13F-HR/A PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20190331 FILED AS OF DATE: 20191114 DATE AS OF CHANGE: 20191114 EFFECTIVENESS DATE: 20191114 FILER: COMPANY DATA: COMPANY CONFORMED NAME: UBS OCONNOR LLC CENTRAL INDEX KEY: 0001132716 IRS NUMBER: 061569842 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR/A SEC ACT: 1934 Act SEC FILE NUMBER: 028-06327 FILM NUMBER: 191221469 BUSINESS ADDRESS: STREET 1: ONE NORTH WACKER DRIVE 32ND FLOOR CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 3125256000 MAIL ADDRESS: STREET 1: ONE NORTH WACKER DRIVE 32ND FLOOR CITY: CHICAGO STATE: IL ZIP: 60606 13F-HR/A 1 primary_doc.xml 13F-HR/A LIVE false true false 0001132716 XXXXXXXX 03-31-2019 03-31-2019 true 1 NEW HOLDINGS true 09-30-2019 03-31-2019 Confidential Treatment Expired UBS OCONNOR LLC

ONE NORTH WACKER DRIVE 32ND FLOOR CHICAGO IL 60606

13F HOLDINGS REPORT 028-06327 N Michael Esposito 3125254009 Michael Esposito Chicago IL 11-13-2019 0 1 1478 INFORMATION TABLE 2 ubsocQ119_A1infotable.xml QUAD / G COMCL 747301109 1478000 124175 SH DFND 124175 0 0