At CFO (Boardroom Media) we track over 1,000,000 startups and over 5,000,000 people who hold key positions in these companies. We use this directory of startups to highlight top employees, founders and board members we think deserve more appreciation than they are currently getting.
This list showcases the top Colorado based CFO’ operating in the Oil and Gas space. If you think a CFO’ is missing from this list, feel free to contact our editor on [email protected].
The individuals on this list have been included because of exceptional performance in one of the following categories:
- Innovation – Operating as a key part in an extremely innovative business or startup.
- Growth – Operating as a key figure in the growth and upscale of a market leading business or startup.
- Management – Showing exceptional management skills.
- Societal impact – Putting their business on the map for their positive societal or environmental impact.
Our Data – We source our data from OSINT (open source intelligence) and public directories such as Crunchbase, SemRush and many more. The data from these sources should be treated with a degree of caution and verified yourself.
Matthew O’Neill
SVP & Chief Financial Officer of Hawkwood Energy
Matt O’Neill brings over 17 years of industry experience to Hawkwood. After commencing his career at Arthur Andersen, Matthew O’Neill moved to industry where he worked both domestically and internationally for some of Australia’s largest public oil and gas companies. Most recently, Matthew O’Neill worked at Oil Search holding multiple roles including Group Controller and General Manager for the Treasury, Tax and Insurance functions. Prior to this Matthew O’Neill worked at Woodside Energy where he held multiple positions including Group Planning Manager, Assistant Treasurer and Finance Manager of the North West Shelf Asset, Australia’s largest resource project. Matthew O’Neill worked for BHP Billiton Petroleum where he was based in Houston and held various finance roles of increasing seniority. Over his career, Matthew O’Neill has raised in excess of $7 billion in capital across both US and International markets. Matthew O’Neill holds a Bachelor of Commerce from the University of Melbourne and is a Australian Chartered Accountant.
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About Hawkwood Energy: Hawkwood Energy is a Denver-based independent exploration and production company.
Glen C. Warren
President, CFO And Director of Antero Resources
Glen C. Warren, Jr. has served as President, Chief Financial Officer and Secretary and as a director since May 2004. Mr. Warren also served as President and Chief Financial Officer and as a director of our predecessor company, Antero Resources Corporation, from its founding in 2002 to its ultimate sale to XTO Energy, Inc. in April 2005. Prior to Antero Resources Corporation, Mr. Warren served as EVP, CFO and Director of Pennaco Energy from 1998 until its sale to Marathon in early 2001. Mr. Warren spent 10 years as a natural resources investment banker focused on equity and debt financing and M&A advisory with Lehman Brothers, Dillon Read and Kidder Peabody. Mr. Warren began his career as a landman in the Gulf Coast region with Amoco, where he spent six years. Mr. Warren is the managing member of Canton Investment Holdings, LLC. Mr. Warren holds a B.A. from the University of Mississippi, a J.D. from the University of Mississippi School of Law and an M.B.A. from the Anderson School of Management at U.C.L.A.
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About Antero Resources: Antero Resources is an independent oil and natural gas company.

Mark Burford
Vice President & Chief Financial Officer of Cimarex Energy
Mark Burford was named Vice President and Chief Financial Officer in September 2015. He was appointed Vice President, Capital Markets and Planning in December 2010. Mr. Burford joined Cimarex in April 2005 as Director of Capital Markets. Prior to joining Cimarex he was Director of Investor Relations for Whiting Petroleum and Tom Brown. His experience also includes equity research with Petrie Parkman & Co., an investment banking firm and public accounting.
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About Cimarex Energy: Cimarex Energy is a Denver-based independent exploration and production company with operations in Oklahoma, Texas, New Mexico and Kansas.

Nancy Hamilton
Chief Financial Officer/Board Member of Ubiterra
Ms. Hamilton joined Ubiterra as CFO in May, 2012. She has over 25 years of finance and accounting experience and serves as the Company’s CFO. She has held executive financial positions for numerous software companies in the Denver-Boulder area. Most recently she was CFO for Local Matters, Inc., a multinational, Denver-based software company for the Yellow Pages industry.
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About Ubiterra: Ubiterra develops cloud-based technologies to manage data needs of the oil and gas industry.
Richard J. Doleshek
CFO of QEP Resources
Richard J. Doleshek was appointed as a Director and Executive Vice President and Chief Financial Officer of our general partner in April 2013. Mr. Doleshek has served as Executive Vice President, Chief Financial Officer and Treasurer of QEP since June 2010. He served as Executive Vice President, Chief Financial Officer of Questar from 2009 until QEPs spin-off in June 2010. Mr. Doleshek will devote […] more
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About QEP Resources, QEP Resources: QEP Resources is an independent crude oil and natural gas exploration and production company focused in Northern & Southern United States.
Jesse Irvin
CFO of Bison Oil & Gas
Jesse Irvin currently works as Chief Financial Officer at Bison Oil & Gas.
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About Bison Oil & Gas: Bison Oil & Gas is an exploration and production company that seeks to expand its position via leasing, acquisition, and joint venture.
Seth Foreman
CFO and Co-Founder of Mallard Exploration
Seth Foreman currently works as Chief Financial Officer and Co-Founder at Mallard Exploration.
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About Mallard Exploration: Mallard Exploration is an upstream oil and gas exploration and production company.
Seth Foreman
CFO and Co-Founder of Mallard Exploration
Seth Foreman currently works as Chief Financial Officer and Co-Founder at Mallard Exploration.
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About Mallard Exploration: Mallard Exploration is an upstream oil and gas exploration and production company.

Nigel Alexander
CFO of Cartasite
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About Cartasite: Industrial IoT provider of wireless sensing technologies that help businesses proactively adapt to change

Michael Stock
Chief Financial Officer of Liberty Oilfield Services
CFO at Liberty Oilfield Services.
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About Liberty Oilfield Services: Liberty Oilfield Services is an innovative oilfield service company.

Brewster Boyd
CFO of EcoVapor Recovery Systems
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About EcoVapor Recovery Systems: A developer of vapor recovery and oxygen removal equipment used in the energy industry.