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Denison Business Team

Diana Williams 
President, Denison
(903) 464-9100

Diana Williams began her Landmark career in 1997. She has over 36 years of banking experience. She is a graduate of Denison High School and has attended numerous banking schools with the Texas Bankers Association and Independent Bankers Association.

Diana is actively involved with her Community and is currently serving in the Denison Rotary Club and Texoma Medical Center Women's Advisory Board. She was past President of both the Denison and Pottsboro Chamber of Commerce. Diana is a past Athena Award winner and BPW Woman of the Year. Diana was past President of the Denison Boys & Girls Club. and served as President of the Denison Service League. Diana served on both the United Way Board and Hagerman Wildlife Board for several years.
Aaron Quarles
Loan Officer
(903) 464-9100

Aaron Quarles joined Landmark Bank in 2002. He holds a degree in business administration from Southeastern Oklahoma State University. He is also a graduate of several Oklahoma Bankers Association and Texas Bankers Association schools including Basic Banking, Consumer Lending, Construction Lending, Personal Financial Statement Analysis, and OMEGA Training.

In the community, Aaron is a board member of the Denison Chamber of Commerce and Denison Community Investment Corporation. He is also a member of the Denison Young Professionals Group and Lion's Club.

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