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Our Team

At our firm, we have the client—and only the client—in mind.

Our reasons for becoming financial professionals are deeply personal. We repeatedly saw many friends and family struggling to find the help they needed to map out their financial future. We are confident that with our understanding of personal finance, coupled with our training as financial professionals, we can help people better prepare for the future. After years in the business, we have developed a reputation for educating individuals in an easy-to-understand manner so they can grasp personal finance and use those concepts to pursue their financial objectives. We feel a commitment to our community.

At our firm, we have the client—and only the client—in mind.

Over the years, we have found that a team approach can be an effective method to help clients who have a wide variety of needs as they maneuver through a complex financial-services world. We invite you to discover and experience the power of our services. We believe it has far-reaching benefits for our clients to get opinions from several sources with diverse backgrounds, education, and experience.

No one strategy fits everyone, which is why every client gets our undivided attention—from planning to execution to follow-up. We take a proactive approach to helping you develop a strategy to address your financial goals and objectives, using the most efficient methods available.

Mark T Mangum

Co-Founder and CEO

Mark Mangum serves as CEO of Eltekon and Managing Principal for its subsidiaries: Eltekon Advisors, LLC, Eltekon Insurance Agency, LLC and Eltekon Business Services, LLC. With over twenty years of experience in the retail financial...

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Brent T Beesley

Director of Private Wealth Management / Principal

Beesley brings over a quarter century of experience in financial services focusing in banking and investment management. His career began with Bank Of America (formerly NationsBank) where he received training as a credit analyst for...

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Shay Bekker

Controller / Relationship Manager

Bekker joined Eltekon in 2001. As relationship manager for our insurance agency, she provides policy management services as well as insurance analysis and solutions to our clients for personal and business needs. She also serves as the...
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Lewis Guilbeau

Investment Advisor Representative

Guilbeau serves an Investment Advisor representative for Eltekon Advisors, LLC as well as a risk management associate for Eltekon Insurance Agency, LLC. He is no stranger to the Westlake Hills area as he grew up a part of this...

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Max Mangum

Director of Trading and Private Markets


Max Mangum serves as Director of Trading and Private Markets for Eltekon Advisors, LLC.Max grew up in Westlake and went on to play safety for the Harvard Football team. During his breaks, he worked in oil and gas Private Equity as well...

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Client Centered

Client Centered

Whether you are investing to build wealth, protect your family, or preserve your assets, our personalized service focuses your needs, wants, and long-term goals.

Our team of professionals have years of experience in financial services. We can help you address your needs of today and for many years to come. We look forward to working with you.