Mark Fleming

Mark Fleming serves as President and CEO at Castle. Castle operates in the oil & energy sector with approximately 370.0 employees. The company is headquartered in Toronto, Ontario.

Industry & Role Insights

• • MessageCEO tracks 1,687 executives in the oil & energy sector.
• • 3,797 executive contacts are available in Ontario.
• • Our database includes 201,469 c suite-level executives.

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Robert Clark Chairman & CEO at 3Bear Energy, LLC

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Euan Tait Chief Operating Officer at 3D at Depth

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Scott Restivo Chief Technology Officer at 3L Energy Solutions

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Matthew Spiller President & CEO at 700 Valve Supply, LLC

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Chris Forstik CEO at 7Compression

Outreach Guidance — oil & energy Sector

Executives like Mark Fleming in the oil & energy sector receive targeted outreach from sales teams, recruiters, and investors. To stand out, personalize your message with industry-specific context and a clear, specific value proposition relevant to their role at Castle.

Mark Fleming's Position in the MessageCEO Database

• •Mark Fleming is 1 of 1 verified executive contact we track at Castle.
• •1,579 verified executive contacts in oil & energy are in the MessageCEO database.
• •3,711 verified executive contacts in Ontario are in the database.
• •8 verified contacts work at oil & energy companies in the 370.0 employee range (same size as Castle).

Executive contact data compiled from public business filings, LinkedIn public profiles, company press materials, and verified outbound email testing. We do not publish personal addresses or sensitive identifiers. Methodology & sources · Removal requests handled at /remove-info · Updated July 2026.

How do I reach Mark Fleming directly?

Mark Fleming's verified email address is available to MessageCEO Pro subscribers. They currently serve as President and CEO at Castle. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does Mark Fleming work for?

Mark Fleming is President and CEO at Castle, a company in the oil & energy sector with 370.0 employees. The company is based in Toronto, Ontario.

Can I pitch or sell to Mark Fleming?

As President and CEO at Castle, Mark Fleming is a key decision-maker in the oil & energy sector. MessageCEO Pro gives you verified email to reach Mark Fleming directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is Mark Fleming in?

Mark Fleming works in the oil & energy industry as President and CEO at Castle. MessageCEO provides verified contact information for executives across all major industries.

Is Mark Fleming's contact information verified?

Yes. MessageCEO verifies executive contact information through multiple data sources and regular validation checks. Mark Fleming's profile is kept up-to-date with the latest available information.

Last updated: July 24, 2026