Lionel Muller

Lionel Muller serves as Founding Partner, CEO at Kepler Group. Kepler Group operates in the marketing & advertising sector with approximately 800.0 employees. The company is headquartered in Paris, Ile-de-France. Kepler Group generates annual revenue of 75000000.0.

Industry & Role Insights

• • MessageCEO tracks 9,879 executives in the marketing & advertising sector.
• • 4,101 executive contacts are available in Ile-de-France.
• • Our database includes 201,469 c suite-level executives.

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JV

Jose Vivar Group CTO-CIO at 014 Media

DA

David Amoros CEO, Creative Director at 023. Think. Create. Produce.

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David Puig CEO, Creative Director at 023. Think. Create. Produce.

MD

Mike Davison Group CEO at 1000heads

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Emily Nicholson Chief Operating Officer at 100 Pound Social

Outreach Guidance — marketing & advertising Sector

Executives like Lionel Muller in the marketing & advertising 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 Kepler Group.

Lionel Muller's Position in the MessageCEO Database

• •Lionel Muller is 1 of 1 verified executive contact we track at Kepler Group.
• •9,714 verified executive contacts in marketing & advertising are in the MessageCEO database.
• •4,045 verified executive contacts in Ile-de-France are in the database.
• •8 verified contacts work at marketing & advertising companies in the 800.0 employee range (same size as Kepler Group).

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 We do not publish personal addresses or sensitive identifiers.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 Lionel Muller directly?

Lionel Muller's verified email address is available to MessageCEO Pro subscribers. They currently serve as Founding Partner, CEO at Kepler Group. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does Lionel Muller work for?

Lionel Muller is Founding Partner, CEO at Kepler Group, a company in the marketing & advertising sector with 800.0 employees. The company is based in Paris, Ile-de-France.

Can I pitch or sell to Lionel Muller?

As Founding Partner, CEO at Kepler Group, Lionel Muller is a key decision-maker in the marketing & advertising sector. MessageCEO Pro gives you verified email to reach Lionel Muller directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is Lionel Muller in?

Lionel Muller works in the marketing & advertising industry as Founding Partner, CEO at Kepler Group. MessageCEO provides verified contact information for executives across all major industries.

Is Lionel Muller's contact information verified?

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

Last updated: July 22, 2026