0001132716-24-000019.txt : 20240214 0001132716-24-000019.hdr.sgml : 20240214 20240214112026 ACCESSION NUMBER: 0001132716-24-000019 CONFORMED SUBMISSION TYPE: 13F-HR/A PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20230331 FILED AS OF DATE: 20240214 DATE AS OF CHANGE: 20240214 EFFECTIVENESS DATE: 20240214 FILER: COMPANY DATA: COMPANY CONFORMED NAME: UBS OCONNOR LLC CENTRAL INDEX KEY: 0001132716 ORGANIZATION NAME: 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: 24634318 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 X0202 13F-HR/A LIVE false false false 0001132716 XXXXXXXX 03-31-2023 03-31-2023 true 3 NEW HOLDINGS true 12-31-2023 03-31-2023 Confidential Treatment Expired UBS OCONNOR LLC

ONE NORTH WACKER DRIVE 31ST FLOOR CHICAGO IL 60606

13F HOLDINGS REPORT 028-06327 N Charles Mathys 3125254114 Charles Mathys Chicago IL 02-14-2024 0 9 643880395 INFORMATION TABLE 2 ubsocQ123_A3infotable.xml EVOQUA WAT COM 30057T105 145506275 2926514 SH DFND 2926514 0 0 FORGEROCK CLA 34631B101 13390001 650000 SH DFND 650000 0 0 NUVASIVE I COM 670704105 4131000 100000 SH DFND 100000 0 0 QUALTRICS COMCL 747601201 45318636 2541707 SH DFND 2541707 0 0 UNIVAR SOL COM 91336L107 180430528 5150743 SH DFND 5150743 0 0 TOWER SEMI SHSNE M87915274 80808731 1902725 SH DFND 1902725 0 0 SEAGEN INC COM 81181C104 116420250 575000 SH DFND 575000 0 0 SPIRIT AIR COM 848577102 21462499 1250000 SH DFND 1250000 0 0 NATIONAL I COM 636518102 36412475 694762 SH DFND 694762 0 0