Onex logo

Onex Employee Directory

Investment ManagementOntario, Canada501-1000 Employees

Onex is an investment management firm that allocates and oversees capital on behalf of its shareholders and a global client base. Founded in 1984, it has a long history of delivering value to its investors. It reports approximately $59.2 billion in assets under management, including $8.7 billion of its own investing capital. The firm maintains offices in Toronto, New York, New Jersey, and London and is listed on the Toronto Stock Exchange under the symbol ONEX.

Its investor base includes public and private pension plans, sovereign wealth funds, insurance companies, family offices, and high-net-worth individuals. Operating in the investment management industry, Onex is based in Toronto.

Find Onex employees' phone numbers or email addresses

Onex Global Highlights

Location
Employees

North America
432

Minus sign iconPlus sign icon
  • Canada
    314
  • United States Of America
    118

Europe
42

Minus sign iconPlus sign icon
  • United Kingdom Of Great Britain And Northern Ireland
    25
  • Switzerland
    6
  • Armenia
    2
  • Spain
    2
  • Georgia
    1
  • Greece
    1
  • Germany
    1
  • Luxembourg
    1
  • Portugal
    1
  • Lithuania
    1
  • France
    1

Asia
25

Minus sign iconPlus sign icon
  • India
    9
  • Pakistan
    5
  • China
    3
  • United Arab Emirates
    2
  • Turkey
    1
  • Israel
    1
  • Sri Lanka
    1
  • Nepal
    1
  • Russian Federation
    1
  • Thailand
    1

Africa
18

Minus sign iconPlus sign icon
  • Algeria
    10
  • South Africa
    3
  • Egypt
    3
  • Nigeria
    1
  • Ethiopia
    1

Oceania
6

Minus sign iconPlus sign icon
  • Australia
    6

South America
6

Minus sign iconPlus sign icon
  • Uruguay
    2
  • Argentina
    2
  • Paraguay
    1
  • Brazil
    1

Onex's Leadership

  • Ceo, Schwartz/Reisman Group at Onex
    L. S.
    Ceo, Schwartz/Reisman Group
  • Chief Human Resources Officer at Onex
    H. H.
    Chief Human Resources Officer
  • Vice President Finance at Onex
    M. N.
    Vice President Finance
  • Vice President Internal Audit at Onex
    A. T.
    Vice President Internal Audit
  • Vp Tax, Schwartz/Reisman Group at Onex
    S. W.
    Vp Tax, Schwartz/Reisman Group
  • Vp - Enterprise Technology at Onex
    C. W.
    Vp - Enterprise Technology
  • Vice President - Taxation at Onex
    R. A.
    Vice President - Taxation
  • Vice President Client Wealth Management at Onex
    E. B.
    Vice President Client Wealth Management

Onex Employee Metrics

100%
50%
0%
2026
2025
  • Finance
  • Analytics
  • Engineering
  • Product Management
  • Information Technology
  • Other
  • Banking
  • Community & Social Services
  • Business

Contact profiles from Onex

Name
Title
Contact
Location
Last Update
  • Ceo, Schwartz/Reisman Group at Onex
    L. S.
    Ceo, Schwartz/Reisman Group
    Canada, Ontario
    Aug 14, 2026
  • Chief Human Resources Officer at Onex
    H. H.
    Chief Human Resources Officer
    Canada, Ontario
    Aug 07, 2026
  • Presidente And Ceo at Onex
    M. D.
    Presidente And Ceo
    Argentina
    Jun 24, 2026
  • Owner at Onex
    E. M.
    Owner
    United Kingdom, England
    Jun 25, 2026
  • Senior Managing Director - Chief Financial Officer at Onex
    C. G.
    Senior Managing Director - Chief Financial Officer
    Mar 15, 2026
  • Interim President at Onex
    D. O.
    Interim President
    Jun 25, 2026
  • President And Chief Executive Officer at Onex
    M. D.
    President And Chief Executive Officer
    Jun 24, 2026
  • Managing Partner at Onex
    M. L.
    Managing Partner
    Jul 09, 2024
  • Group Chief Financial Officer, Schwartz & Reisman at Onex
    M. I.
    Group Chief Financial Officer, Schwartz & Reisman
    Nov 11, 2024
  • Owner at Onex
    R. D.
    Owner
    Canada, Ontario
    Aug 14, 2026

Frequently Asked Questions

What is Onex known for?

Minus sign iconPlus sign icon
Onex was founded in 1984 and operates in the Investment Management industry. You can contact Onex's main corporate office by phone at . Explore Onex's company overview page for more information.

What is Onex's most common email format?

Minus sign iconPlus sign icon
Onex employees' email format typically follows the pattern of FLast@onex.com. Trying to find reliable and up-to-date employee contact data? Find more Onex email formats with LeadIQ.

How many employees does Onex have currently?

Minus sign iconPlus sign icon
Onex has approximately 819 employees as of August 2026. These team members are located across 6 continents, including North America, Europe and Asia.

Who are Onex's key employees and leadership?

Minus sign iconPlus sign icon

As of August 2026, Onex's key employees include:

  • Ceo, Schwartz/Reisman Group: L. S.
  • Chief Human Resources Officer: H. H.
  • Vice President Finance: M. N.
  • Vice President Internal Audit: A. T.
  • Vp Tax, Schwartz/Reisman Group: S. W.

Looking for contact data? Unlock accurate emails and phone numbers for your ideal prospects with LeadIQ.

Ready to create more pipeline?

Get a demo and discover why thousands of SDR and Sales teams trust
LeadIQ to help them build pipeline confidently.

© LeadIQ, Inc. All rights reserved.