John C. G. O'Leary

John C. G. O'Leary

Director/Board Member at TECHNIPFMC PLC

Net worth: 9 M $ as of 30/06/2026

70 year
Industrial Services
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Profile

John C.
G.
O'Leary
was the founder of Vantage Energy Services, Inc., founded in 2006, where the title held was Director.
Current jobs include Chief Executive Officer at Strand Energy since 2007, Chairman at Excel Marco, Independent Director at TechnipFMC plc since 2017, Regional Vice President at International Association of Drilling Contractors, Member-Supervisory Board at Kahn Scheepvaart BV, Member-Supervisory Board at Jumbo Shipping VOF since 2007, and Member-Supervisory Board at Huisman Equipment BV since 2006.
Former jobs include Vice Chairman-Marketing at Forasol-Foramer NV from 1990 to 1997, Independent Director at Technip SA, Director at Vantage Drilling Co. from 2008 to 2016, Director at Maritime Industrial Services Co. Ltd., Inc., President & Vice President-International Marketing at Pride International LLC (Texas) from 1997 to 2004, Trustee at The Awty International School Houston, and Partner at Pareto Offshore ASA from 2004 to 2006.
Education history includes undergraduate studies at IFP Energies Nouvelles, graduate studies at Trinity College Dublin, and undergraduate studies completed in 1977 at University College Cork.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
19/05/2026 131,335 ( 0.03% ) 9 M $ 30/06/2026

John C. G. O'Leary active positions

CompaniesPositionStart
TECHNIPFMC PLC Director/Board Member 01/01/2017
Excel Marco
Chairman 16/03/2011
Strand Energy
Chief Executive Officer 01/01/2007
Director/Board Member 01/01/2006
Director/Board Member 01/01/2007
Corporate Officer/Principal 16/03/2011
Director/Board Member 11/01/2010

Former positions of John C. G. O'Leary

CompaniesPositionEnd
VANTAGE DRILLING COMPANY Director/Board Member 10/02/2016
Corporate Officer/Principal 01/01/2006
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Excel Marco

Strand Energy

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