Our Team

David H. Diesslin, CFP^®, is the CEO and founder of Diesslin Group, Inc. Dave founded the firm as Diesslin & Associates, Inc., in 1980 and has provided fee-only financial planning and investment management ever since. He has been honored for his work as a financial advisor in Worth, Medical Economics, Fort Worth Inc., and Money magazines and has been endorsed by the Consumers’ Research Council of America as one of “America’s Top Financial Planners.” Throughout his professional life, Dave has worked diligently to promote and advance the financial planning profession both nationally and internationally. In addition, he has served as a chairman of the Board of Governors on the Certified Financial Planner Board of Standards as well as both a chairman and president of the National Association of Personal Financial Advisors (NAPFA).

Dave received an MBA from the University of Dallas and a BS in business management from Indiana University. He has held his CERTIFIED FINANCIAL PLANNER^TM mark since 1983. Prior to entering the financial planning profession, Dave served as First Lieutenant for the United States Army Signal Corps.

Norman R. “Rocky” Farr, CFP^®, EA, ATA, is DGi’s Managing Director as well as a Relationship Manager and principal of the firm. Rocky oversees the firm’s daily operations and coordinates the efforts of the Financial Planning, Client Services, and Asset Management divisions. He specializes in estate and tax planning.

Rocky has held his CERTIFIED FINANCIAL PLANNER^TM mark since 1982. He also holds an Enrolled Agent license from the Internal Revenue Service and an Accredited Tax Advisor license from the Council for Accounting and Taxation. Rocky joined DGi in 1992. Prior to moving to Texas, he played hockey professionally.

Shawn L. Gray is DGi’s Chief Compliance Officer and Chief Information Security Officer as well as a principal of the firm. Shawn manages the firm’s computing, networking, and programming solutions. He also develops retirement and cash flow projections and models stock options for clients.

He received a BBA in finance from the University of Texas at Arlington and worked in the banking industry prior to joining DGi in 1992.

Charles A. Denison is DGi’s Chief Investment Officer as well as a Relationship Manager and principal of the firm. Charles oversees all aspects of the firm’s portfolio management process, including investment analysis as well as client reporting and communication. He also works closely with clients to provide consultations, risk-return analysis, portfolio rebalances, and performance measurement.

Charles received a BBA degree in finance from Texas A&M University and holds his Series 65 license. He joined the firm in 2010.

Scott B. Reasor is a Relationship Manager and Portfolio Manager at DGi. He conducts investment and risk-return analysis, performance measurement, diagnostic procedures, and asset allocation for client portfolios. Scott also serves as an advocate and primary point of contact for clients, maintaining ongoing communication with them while monitoring and executing projects to help them meet their financial goals.

Scott received a BBA degree in finance from the University of Texas at Arlington and has been with DGi since 2004.

Mark M. Michel, CFA, MBA serves as a Portfolio Manager at DGi. He conducts investment analysis, risk-return analysis, performance management, and asset allocation for client portfolios. Mark is also involved in the analysis of the firm’s alternative investments. Prior to joining DGi in 2021, Mark worked as an Associate Portfolio Manager for American Beacon Advisors and a Senior Portfolio Analyst at JPMorgan. Before entering the financial services industry, he served in the U.S. Army, deploying to Iraq and Afghanistan.

Mark received an MBA from Southern Methodist University and a BS in mechanical engineering from Pennsylvania State University. He is a CFA^® charter holder and a member of both the CFA Institute and the CFA Society of Dallas-Fort Worth.

Tristyn L. Williams is an Asset Management Associate at DGi. Tristyn received a BS in agricultural economics from Texas A&M University and plans to sit for the CFP^® exam in November 2021. He joined DGi in 2021.

Olivia F. Partin is a Financial Planner at DGi and assists with various client and firm projects. Olivia received her BS in interdisciplinary studies from Texas A&M University. She also holds her AAMS^® and FPQP™ certifications and is pursuing CFP^® certification. She joined the firm in 2021.

Ariella M. Singleton is a Financial Planning Associate at DGi. She specializes in client communications, works collaboratively with the DGi team to complete diverse client and firm projects, and assists with various aspects of the financial planning process.

Ariella received a BA in English from the University of Texas at Arlington and an MA in English from Texas Christian University; she also holds a Series 65 license and is pursuing CFP^® certification. She joined DGi in 2019.

Sherry L. Redden, FPQP™,is DGi’s Client Services Director. She has numerous responsibilities—some of which include serving as a client liaison and financial planning associate—and helps ensure each division of the firm functions successfully.

In addition to being a certified paraplanner, Sherry has over 20 years of professional experience as an executive assistant and outside sales representative. She joined DGi in 2012.

Angela L. Woodson is a Client Services Associate at DGi. She assists with servicing client requests and ongoing account administration.

Angela received a BS in counseling education from the University of North Texas. She joined the DGi team in 2019.

Stephanie A. Dacanay is a Client Services Associate at DGi. She has many responsibilities, including scheduling meetings, corresponding with clients, providing administrative assistance, and planning team events. She joined DGi in 2021.

Edie C. Peplinski is the Senior Executive Assistant to David Diesslin. Her responsibilities include time management and scheduling, arranging travel, coordinating and scheduling meetings, overseeing event planning, and assisting with office and administrative responsibilities at the firm.

Edie has over 40 years of experience in executive-level administrative and personal assistant positions and previously worked for the Fort Worth Symphony Orchestra Association. Edie attended Tarrant County College and has worked at DGi since 2003.