0001132716-21-000020.txt : 20211112 0001132716-21-000020.hdr.sgml : 20211112 20211112103316 ACCESSION NUMBER: 0001132716-21-000020 CONFORMED SUBMISSION TYPE: 13F-HR/A PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20201231 FILED AS OF DATE: 20211112 DATE AS OF CHANGE: 20211112 EFFECTIVENESS DATE: 20211112 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: 211401172 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 false false 0001132716 XXXXXXXX 12-31-2020 12-31-2020 true 2 NEW HOLDINGS true 09-30-2021 12-31-2020 Confidential Treatment Expired UBS OCONNOR LLC

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