Our team of professionals has extensive expertise in a number of disciplines.


Arnold B. Siemer – Chief Executive Officer/CEO

Arnold (“Al”) Siemer founded Desco Corporation in 1966. Since the purchase of his first manufacturing company, he continues to lead the company’s senior management team, while focusing on potential acquisitions. He has acquired more than 30 industrial companies over the years. Mr. Siemer holds a B.A. degree in Banking and Finance from John Carroll University. He also holds a degree in Foreign Trade from American Graduate School and a Law degree from Cleveland Marshall Law School.

Roger D. Bailey - Chief financial officer

Roger joined Desco Corporation in 1995 as Chief Financial Officer, bringing extensive financial experience and the knowledge of MIS Systems and software. Since that time he has led numerous acquisition efforts. Roger has international experience, working in Paris, France as Plant Controller, Manager of Financial Services, Europe and Director of Treasury Operations. Prior to Desco, Roger served as the Treasurer and Chief Financial Officer for Asten Group in Charleston, South Carolina.

Roger graduated from Texas Christian University in Fort Worth, Texas with a B.B.A. in Business Management. He received an M.B.A. in Marketing and Finance from Indiana University located in Bloomington, Indiana. Roger attended Carnegie Mellon University Graduate School in Pittsburgh, Pennsylvania where he earned an M.S. degree in Chemical Engineering while working with PPG Industries.

Paul D. Kestler – Operating Director

Paul has over 20 years of senior management experience with middle-market industrial companies. He is a problem-solver with a keen sense of the high impact items that directly affect the performance of a business. Paul uses these skills to optimize operations and successfully adapt them to today’s dynamic business environment. Paul is a member of the investment team. He manages due diligence efforts and works with acquired companies.

Prior to joining Desco, Paul served as a senior manager (including interim CEO) with several of Desco’s affiliates including: Marsh Instrument-Juarez, Mexico; Thermo-Couple Products; Tek-Air Corporation; Medical Indicators; Marsh Bellofram-USA; Marsh Bellofram-Shanghai; Automatic Timing & Controls; and Windsor Republic Door. Paul has historically focused on the implementation and management of key corporate initiatives. Past initiatives include China procurement & outsourcing, acquisition integration, plant relocations, cost reductions & efficiencies, turnaround management, and interim senior management.

Before joining Desco Corporation, Paul had a diversified background in industrial manufacturing and distribution, retail distribution, corporate purchasing, project/systems integration, and investment management.

Paul earned a Bachelor of Science in Marketing from Arizona State University, graduating cum laude. Paul is based in Dallas, Texas.   


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We operate businesses in five different countries around the world.

Founded in


Fifty years of corporate management experience.



We manage businesses ranging from $5 to $100 million.