​Innovators in the Rugged Tablet Industry Executive Team

​Tom Wilkinson


Tom Wilkinson is the chief executive officer (CEO) of Xplore. A highly respected executive, Wilkinson has been working with Xplore for over ten years, first as an auditor and business advisor and most recently as chief financial officer (CFO).

Wilkinson has more than 25 years of financial management experience, including extensive experience with SEC registrants in the global software and technology industries. Prior to joining Xplore full-time in 2015, Wilkinson served as CFO for Amherst Holdings and as managing partner of a regional public accounting and marketing firm that grew to be one of the largest 150 firms in the United States. His prior experience also includes business development for a subsidiary of Credit Suisse First Boston and senior management roles at both Dell and KPMG.

He holds a Bachelors of Business Administration and a Masters of Professional Accounting from the University of Texas at Austin and is a certified public accountant (CPA) in Texas and Colorado.

Pat McClain


Pat McClain is the Chief Financial Officer (CFO) at Xplore. In this role he is responsible for all finance, information technology (IT), human resources (HR), and legal operations. McClain has more than 30 years of senior management and CFO experience at a variety of global technology companies, both public and private. He also brings to Xplore extensive experience in acquisitions, mergers, and spin-outs.

Most recently, McClain served as Executive Vice President (EVP), CFO and Treasurer at Falconstar Software, a New-York-based public company where he played a key role in the company turnaround. He was directly responsible for the delivery of cash and EBITDA-positive results within six months of joining the company. Previously, McClain served as CFO at Aurea Software (an ESW/Trilogy company) and Rules-Based Medicine (Myriad RBM), both recognized for their high growth rates. McClain started his career at Price Waterhouse Coopers.

He holds a bachelor of business administration in accounting from Ohio University.

Tim Dehne


Tim Dehne is the chief operating officer (COO) at Xplore. In this role, he is responsible for engineering, operations and strategic business initiatives.

Dehne brings more than 30 years of technology business experience in a variety of engineering, marketing, and leadership roles. Most recently, Dehne served as the vice president of engineering for Briggo, Inc., a privately-held corporation in Austin, Texas. Prior to this position, he served as vice president of systems research & development, and then vice president of global marketing, at Luminex Corporation, an Austin-based company that develops, manufactures, and markets biological testing technologies with applications throughout the life science and diagnostic industries. Prior to Luminex, Dehne held various engineering and marketing executive positions at National Instruments (NI), during which time he helped drive the company’s growth to more than 4,000 employees and over $800 million in annual revenue. He ended his tenure at NI as senior vice president of, research & development.

Dehne holds a bachelor of science in electrical engineering from Rice University and serves on the Board of Directors for Cirrus Logic and Asset Intertech.

John Graff


John Graff is the chief revenue officer (CRO) at Xplore. In this role, he is responsible for driving greater alignment and collaboration across all revenue-related functions to drive continued company growth, including sales, marketing, channel, engineering, and services.

He previously served as the vice president of marketing at Xplore, during which time he was responsible for the ideation and oversight of strategic, integrated communications and product marketing initiatives. In this role, he effectively increased brand awareness and widespread adoption of Xplore rugged tablets across the company’s addressable markets.

Graff boasts more than 25 years of business-to-business (B2B) marketing experience and a strong track record of innovation, change and evolution within the technology industry. During his career at National Instruments, Graff was recognized for his ability to effectively capitalize on new trends and technologies in marketing to drive measurable revenue growth and profitability for the company. He also developed and led highly-engaged sales, marketing, customer operations, and product marketing teams as vice president of marketing, vice president of Americas sales and marketing, and most recently, vice president of corporate marketing.

Graff is a graduate of the University of Texas at Austin and holds Bachelor of Science in Electrical Engineering with a minor in Marketing and Business. He’s also a science, technology, engineering, and math (STEM) evangelist and serves on the Past Presidents’ Council of the Thinkery.

Michael Zimmerman

Vice President, Global Operations

Michael Zimmerman serves as vice president of Global Operations at Xplore. Zimmerman’s focus is on optimizing business operations for Xplore to meet customer and employee requirements and streamline Xplore’s tablet production to deliver the most advanced and rugged tablets in the industry.

Zimmerman previously provided strategic direction and spearheaded operational efficiency initiatives for major technology companies including Getac, Gateway, Inc., Compaq Computers, Best Buy, and Motorola.

David Dunkak

Vice President, USA Commercial Sales

David Dunkak is vice president of US Commercial Sales and is responsible for managing regional territories and channels, driving all commercial sales activities in the United States. Dunkak joins Xplore from Getac, where he spent six years and was most recently senior director of North American commercial sales.

Prior to Getac, Dunkak spent 15 years at Panasonic, where he was responsible for the professional services organization and implementing and launching new value-added services for ToughBook clients and developing sales strategy and key selling points for PCSC sales force. He started his career in sales at MicroAge Computer Stores, and also held positions at Brother International Corporation and Toshiba America Information Systems, where he recruited and developed new resellers to promote portable computers.

Dunkak holds a Bachelor of Science in Business Administration & Finance and a minor in Economics from Emporia State University.

Steve Priestley

Vice President, International Sales

Steve Priestley serves as vice president of sales for our International business which includes EMEA and APAC and is responsible for building and driving Xplore’s sales and service organizations in the region. He is equally focused on the execution of Xplore’s business goals and the achievement of long-term customer satisfaction through the design and delivery of quality customer focused rugged solutions.

Priestley boasts a strong background in the wireless, IT and M2M/IOT hardware and services markets and an impressive 20-year sales leadership track record with technology leaders such as Cisco, Enfora (now part of Novatel), Wyeless and – most recently – Westbase. He has also served as the head of Symbol Technologies in EMEA, during which time he led the restructuring of the regional EMEA team to drive profitability and revenue growth while developing a more comprehensive, channel-centric go-to market model and service capability.

Priestley received an Honors Degree in electronic and electrical engineering from Coventry.

Bryan J. Bell

Vice President, Engineering

Bryan Bell serves as vice president of Engineering for Xplore. In this role, he leads the roadmap strategy and product development for the company—marrying business objectives to product development—while keeping Xplore’s tablets cost-effective. Bell also closely manages supplier relationships to provide customers with the most advanced systems available and keeps Xplore products as the leading rugged devices for all industries. Bell has served as vice president of engineering since 2008.

Prior to joining Xplore, Bell served as vice president of operations at Sirific Wireless, a developer of 3.5G multi-mode, multi-band mobile cellular, and broadband data products, and as vice president and general manager at Acer Advanced Labs, Acer Inc. Bell also previously held the position of notebook product line manager, as well as other leadership positions during a 16-year career at Texas Instruments.

Bell graduated from Grove City College with a Bachelor of Science in engineering management, and also holds a master’s in business from Amberton University.