David Deak

Visionary
DISC Type : Ds

Advisor at EnergySource Minerals

Los Gatos, California, United States

Overview

David Deak is the President of Marbex LLC and Chief of Strategy at EnergySource Minerals, focusing on the intersection of mining, energy, and technology. With a DPhil from the University of Oxford and past experience at Tesla, he is an expert in battery materials. Colleagues describe him as intelligent with a great work ethic.

His professional focus is centered on sustainable and low-footprint resource development, particularly in battery and rare earth material supply chains. He actively promotes initiatives that leverage technology to reduce environmental impact and costs in the energy sector, as shown in his public commentary and company missions.

Unique fact: David holds board seats at multiple innovative energy and materials companies, including Addionics, Novalith Technologies, and Black Swan Graphene, and is Chairman of Maple Materials.

Personality Overview

Fast But Thoughtful

Early Adopter

Risk Tolerant

They exhibit a rare combination of being result-oriented but patient at the same time.  Reading between the lines and seeing beyond your words comes naturally to them. They might take some time to make their mind up but once they do, they don't change it easily.

Topics They Care About

Sustainable Lithium
As Chief of Strategy at EnergySource Minerals, he is advancing what they call the "world's most sustainable lithium production platform" using innovative extraction technology.
Battery Supply Chains
His advisory firm, Marbex LLC, and his previous work at Tesla are focused on the supply chains for critical battery materials like lithium, graphite, and cobalt.
Low-Footprint Mining
His company, Marbex LLC, is specifically focused on supporting commercial initiatives that have a low environmental footprint in resource development.

Media Appearances

David has no verified media appearances

Work History

9-2025
Advisor at EnergySource Minerals
9-2025
Advisor at ILiAD Technologies
5-2023
Chairman at Maple Materials
1-2023 - 9-2025
Chief of Strategy at EnergySource Minerals
2023 - 9-2025
Chief of Strategy at ILiAD Technologies

Education

DPhil from University of Oxford
BASc from University of Toronto

More Information

Social Presence :

Prographics :

Exp : 23 Location : Los Gatos, California, United States Job Level : N/A Designation : Advisor at EnergySource Minerals
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Insights For Selling To David

During A Call Or A Meeting

DO's

  • Focus on the results that your product produces, expect some strategic questions in return
  • You can spend time on BANT (or other qualification methodology) but keep it to the point
  • Suggest clear next steps with confidence, don't be vague or hesitant

DONT's

  • Don't focus too much on mutual contacts or bother about other stakeholders, focus on them
  • Don't shy away from asking hard questions, but be extra polite
  • Don't take their patience for granted, avoid long-winding sermons

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with David is

  • Strong proof of impact and their conviction will matter the most, but they wouldn't want to act unilaterally either
  • Will you ever get a clear answer from David

  • They will say no if they are not convinced but you will have to prompt them.

Insights For Deal Planning

    How fast (or slow) will David move?

  • They will want to understand things well but can move fast once they have a clear picture.
  • Can David take some risk or not?

  • They have good risk tolerance but are likely to think it through once or twice.

You And David

Personality Compatibility


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