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Sean O'Sullivan, CFA

Managing Director at KKR

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Overview

Sean O'Sullivan holds the position of Managing Director at KKR [1]. O'Sullivan is a credit investment professional with 18+ years of experience across high-yield, stressed/distressed, structured credit, and direct lending, with a track record spanning analyst through portfolio manager roles and expertise in fundamental credit underwriting, restructuring, bespoke asset structuring, and cross capital structure investing [2]. Prior to joining KKR in August 2026 [3], O'Sullivan served as Senior Portfolio Manager at Millennium from August 2024 to April 2026 [4], and held positions at UBS O'Connor as Executive Director from March 2022 to August 2024 and Director from August 2018 to March 2022 [5][6]. Earlier roles included Vice President at PointState Capital from March 2016 to 2017 [7], Vice President at MidOcean Credit Partners from July 2014 to March 2016 [8], and Senior Research Analyst at Solus Alternative Asset Management from June 2007 to June 2014 [9]. O'Sullivan earned a Bachelor of Business Administration in Finance from Loyola University Maryland between 2003 and 2007 [10].

Profile introduction
Source excerptLinkedIn [2]

Credit investment professional with 18+ years of experience across HY, stressed/distressed, structured credit, and direct lending. Track record spanning analyst through PM roles, with deep expertise in fundamental credit underwriting, restructuring, bespoke asset structuring, and cross capital structure investing.

Career history

  1. Managing DirectorAug 2026 to presentKKR
  2. Senior Portfolio ManagerAug 2024 to Apr 2026Millennium
  3. Executive DirectorMar 2022 to Aug 2024UBS O'Connor
  4. DirectorAug 2018 to Mar 2022UBS O'Connor
  5. Vice PresidentMar 2016 to 2017PointState Capital
  6. Vice PresidentJul 2014 to Mar 2016MidOcean Credit Partners
  7. Senior Research AnalystJun 2007 to Jun 2014Solus Alternative Asset Management

Education

  1. Bachelor of Business Administration (BBA), Finance, General2003 - 2007Loyola University Maryland

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