0001132716-20-000006.txt : 20200214 0001132716-20-000006.hdr.sgml : 20200214 20200213205813 ACCESSION NUMBER: 0001132716-20-000006 CONFORMED SUBMISSION TYPE: 13F-HR/A PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20190930 FILED AS OF DATE: 20200214 DATE AS OF CHANGE: 20200213 EFFECTIVENESS DATE: 20200214 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: 20613199 BUSINESS ADDRESS: STREET 1: ONE NORTH WACKER DRIVE 31ST FLOOR CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 3125256000 MAIL ADDRESS: STREET 1: ONE NORTH WACKER DRIVE 31ST FLOOR CITY: CHICAGO STATE: IL ZIP: 60606 13F-HR/A 1 primary_doc.xml 13F-HR/A LIVE false true false 0001132716 XXXXXXXX 09-30-2019 09-30-2019 true 1 NEW HOLDINGS true 12-31-2019 09-30-2019 Confidential Treatment Expired UBS OCONNOR LLC

ONE NORTH WACKER DRIVE 31ST FLOOR CHICAGO IL 60606

13F HOLDINGS REPORT 028-06327 N Michael Esposito 3125254009 Michael Esposito Chicago IL 02-13-2020 0 3 251040 INFORMATION TABLE 2 ubsocQ319_A1infotable.xml CALLON P COM 13123X102 2266000 522191 SH DFND 522191 0 0 SUNTRUST COM 867914103 231324000 3362266 SH DFND 3362266 0 0 VIACOM I CLB 92553P201 17450000 726145 SH DFND 726145 0 0