CIK 1164688
Long positions in SEC Section 13(f) securities (US-listed stocks, ADRs and ETFs), largest first · Δ vs 2025-Q4. A lagged quarterly snapshot (filed ≤45 days after quarter-end); excludes shorts, options, cash, and shares listed only on non-US exchanges — foreign companies held via a US listing or ADR (e.g. Alibaba, TSMC) ARE included.
Firm-level facts as reported by the adviser on Form ADV Part 1A (latest filing 2026-06-01). Regulatory assets under management (RAUM) is Form ADV's gross figure and can differ from a 13F long book — it includes private-fund assets, leverage and non-13(f) securities. Titles and figures as-filed. Latest ADV filing 2026-06-01. Form ADV ↗
| Name | Title (as filed) | Since | Ownership |
|---|---|---|---|
| AUGUST, GLENN, RUSSELL | FOUNDER/CHIEF EXECUTIVE OFFICER | 1999-08 | <5% ·◆ |
| Atteslis, Alexis, NMN | UK MANAGEMENT COMMITTEE | 2019-12 | <5% ·◆ |
| BOHNSACK, WILLIAM, HARTWIG | PRESIDENT/SENIOR PARTNER | 2001-01 | <5% ·◆ |
| KERTZNER, ADAM, BRADLEY | PORTFOLIO MANAGER/SENIOR PARTNER | 2019-01 | <5% ·◆ |
| LEE, KAHYEONG, NMN | MANAGING DIRECTOR/CHIEF COMPLIANCE OFFICER/DEPUTY GENERAL COUNSEL | 2017-01 | <5% ·◆ |
| PANTER, LUCY, CLARE | UK MANAGEMENT COMMITTEE | 2019-12 | <5% ·◆ |
| SCHRAGER, ALAN, MARC | PORTFOLIO MANAGER/SENIOR PARTNER | 2010-01 | <5% ·◆ |
| SONMEZ, MUSA | UK MANAGEMENT COMMITTEE | 2019-12 | <5% ·◆ |
| Sidoti, John, Victor James | MANAGING DIRECTOR, DEPUTY GENERAL COUNSEL & CCO - EUROPE; UK MANAGEMENT COMMITTEE | 2025-07 | <5% ·◆ |
| TIERNAN, DECLAN, MARTIN | UK MANAGEMENT COMMITTEE | 2018-02 | <5% ·◆ |
| ZAESKE, MARK, ALAN | CHIEF FINANCIAL OFFICER | 2026-03 | <5% ·◆ |
| OAK HILL ADVISORS (U.K. SERVICES), LIMITEDentity | PARTNER | 2005-06 | 75%+ ·◆ |
| OAK HILL ADVISORS GENPAR, L.P.entity | GENERAL PARTNER | 2005-04 | 25–50% ·◆ |
| OHA GENPAR PRINCIPAL INVESTORS, L.P.entity | LIMITED PARTNER | 2021-12 | 10–25% |
| OMEGA MERGER SUB 3, LLCentity | LIMITED PARTNER | 2021-12 | 10–25% |
| T. ROWE PRICE ASSOCIATES, INC.entity | LIMITED PARTNER | 2021-12 | 10–25% |
| WSI OHA LLCentity | LIMITED PARTNER | 2018-02 | 10–25% |
Direct owners and executive officers as filed on the adviser's Form ADV Schedule A (as-filed titles; ADV updates annually and on material change). This lists officers and 5%+ owners — not necessarily the full portfolio-management team.
Signed this manager's latest 13F (2026-Q1). The filing's authorized signatory — frequently a compliance officer, general counsel, or CFO — not necessarily the portfolio manager or firm leadership.
| Name | Role (as filed) | Departed after | Now at (if tracked) |
|---|---|---|---|
| RUBIN, GREGORY, SCOTT | PARTNER/GENERAL COUNSEL · MANAGING DIRECTOR/GENERAL COUNSEL · MANAGING DIRECTOR & GENERAL COUNSEL · MANAGING DIRECTOR, GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER · GENERAL COUNSEL/CHIEF COMPLIANCE OFFICER · CHIEF COMPLIANCE OFFICER | 2024-03 | — not seen at a tracked firm |
| SORBO, JOHN, ANTHONY | CHIEF OPERATIONS AND TECHNOLOGY OFFICER | 2024-03 | — not seen at a tracked firm |
| Hansen, Thomas, Dean | CHIEF ACCOUNTING OFFICER | 2024-03 | — not seen at a tracked firm |
| MURPHY, RAYMOND, PATRICK | MANAGING DIRECTOR/CHIEF ACCOUNTING OFFICER · MANAGING DIRECTOR & CHIEF ACCOUNTING OFFICER · CHIEF ACCOUNTING OFFICER | 2021-11 | — not seen at a tracked firm |
| BLUMSTEIN, MICHAEL, WES | MANAGING DIRECTOR/CHIEF OPERATING OFFICER · CHIEF FINANCIAL OFFICER | 2021-11 | — not seen at a tracked firm |
| KRASE, SCOTT, DAVID | SENIOR ADVISOR · PORTFOLIO MANAGER/ PARTNER/VICE CHAIRMAN, EUROPE · PORTFOLIO MANAGER/SR. PARTNER | 2017-08 | — not seen at a tracked firm |
| OKUN, ROBERT, BRUCE | CHIEF INVESTMENT OFFICER/SENIOR PARTNER · CHIEF INVESTMENT OFFICER AND SENIOR PARTNER · CHIEF INVESTMENT OFFICER OF U.S. CREDIT/SENIOR PARTNER · PORTFOLIO MANAGER/SR. PARTNER | 2017-08 | — not seen at a tracked firm |
| WERNICKE, CARL, LAWRENCE | MANAGING DIRECTOR/PARTNER | 2017-08 | — not seen at a tracked firm |
| JUNG, ALEXANDRA, AHRENS | PARTNER OF OAK HILL ADVISORS, L.P., OAK HILL ADVISORS (EUROPE), LLP, AND OHA (UK) LLP/CO-HEAD OF EUROPEAN INVESTMENTS · PARTNER OF OAK HILL ADVISORS, L.P., OAK HILL ADVISORS (EUROPE), LLP, AND OHA (UK) LLP AND CO-HEAD OF EUROPEAN INVESTMENTS · PARTNER OF OAK HILL ADVISORS, L.P. AND CO-HEAD OF EUROPEAN INVESTMENTS/PARTNER OF OAK HILL ADVISORS (EUROPE), LLP · PARTNER OF OAK HILL ADVISORS (UK SERVICES) LIMITED | 2017-08 | — not seen at a tracked firm |
| WONG, THOMAS, SHUN ON | PORTFOLIO MANAGER/PARTNER | 2017-08 | — not seen at a tracked firm |
| HENDERSON, ROBERT, DOUGLAS | PARTNER OF OAK HILL ADVISORS, L.P., OAK HILL ADVISORS (EUROPE), LLP, AND OHA (UK) LLP/CO-HEAD OF EUROPEAN INVESTMENTS · PARTNER OF OAK HILL ADVISORS, L.P., OAK HILL ADVISORS (EUROPE), LLP, AND OHA (UK) LLP AND CO-HEAD OF EUROPEAN INVESTMENTS · PARTNER OF OAK HILL ADVISORS, L.P. AND CO-HEAD OF EUROPEAN INVESTMENTS/ PARTNER OF OAK HILL ADVISORS (EUROPE), LLP · PARTNER OF OAK HILL ADVISORS, L.P. AND PORTFOLIO MANAGER/PARTNER OF OAK HILL ADVISORS (EUROPE), LLP | 2017-08 | — not seen at a tracked firm |
| THOMAS, FREDERIC, WATTS | MANAGING DIRECTOR/PARTNER | 2017-08 | — not seen at a tracked firm |
| SERRANO, JASON, THOMAS | HEAD OF MORTGAGE STRATEGIES/PARTNER · HEAD OF MORTGAGE STRATEGIES & PARTNER · CO-HEAD OF STRUCTURED PRODUCTS/ PARTNER | 2017-08 | — not seen at a tracked firm |
| NARAYAN, THULUSALAMATOM, KRISHNAMURTHI | HEAD OF CORPORATE STRUCTURED PRODUCTS/PARTNER · HEAD OF CORPORATE STRUCTURED PRODUCTS & PARTNER · CO-HEAD OF CORPORATE STRUCTURED PRODUCTS & PARTNER · PORTFOLIO MANAGER/ PARTNER | 2017-08 | — not seen at a tracked firm |
| BLACKMORE, COLIN, JAMES | MANAGING DIRECTOR/GENERAL COUNSEL, EUROPE (LEGAL AND COMPLIANCE) · MANAGING DIRECTOR AND GENERAL COUNSEL, EUROPE (LEGAL AND COMPLIANCE) | 2017-08 | — not seen at a tracked firm |
| ASKEW, JONATHAN, NMN | CHIEF FINANCIAL OFFICER - EUROPE | 2017-08 | — not seen at a tracked firm |
| MUNN, RICHARD, PETER | CHIEF OPERATING OFFICER/PARTNER OF OAK HILL ADVISORS (EUROPE), LLP AND OHA (UK) LLP · CHIEF OPERATING OFFICER/PARTNER OF OAK HILL ADVISORS (EUROPE), LLP · PARTNER OF OAK HILL ADVISORS (UK SERVICES) LIMITED | 2015-09 | — not seen at a tracked firm |
| PULJIC, GORAN, VID | CO-HEAD OF CORPORATE STRUCTURED PRODUCTS & PARTNER · CO-HEAD OF STRUCTURED PRODUCTS/ PARTNER | 2015-09 | — not seen at a tracked firm |
| KIRT, JEFFREY, EMIL | MANAGING DIRECTOR/PARTNER | 2014-12 | — not seen at a tracked firm |
Named owners/officers on a past Form ADV Schedule A who are gone from the firm's latest filing. “Departed after” is the last dated filing they appear on. A landing shows only when the destination is another SEC-registered adviser we track.
