Vistage Executive Team

Real experience fosters real leadership.

Meet the Vistage Executive Team

Vistage Worldwide is an executive coaching organization that has assembled an experienced management team with a wide range of achievements in different industries and professions. Each executive has more than 20 years’ experience in executive and senior management positions with Fortune 1000 companies, start-ups, and divisions of multinational firms, government agencies and running their own consulting firms.

Sam Reese
Chief Executive Officer

Brian Casazza
Chief Operating Officer

Teigue Thomas
Chief Legal and Administrative Officer

James Deveson
Chief Information Officer

Joe Galvin
Chief Research Officer

Mike Hammel
Chief Marketing Officer

Elias Olmeta
Chief Financial Officer

Andy Nielsen
Senior Vice President, Products and Strategy

John Kenney
Senior Vice President of US Sales Operations

Mary Ellen Sheehy
Senior Vice President of Member Programs and Alliances

Lee Peters
Senior Vice President – Eastern Region

Tim Call
Senior Vice President – Western Region

John DeBord
Senior Vice President – Central Region

Tim Gray
Senior Vice President – Southern Region

Sam Reese, Chief Executive Officer

Sam Reese brings over 25 years of experience leading and advising senior leaders in complex organizations. As Chief Executive Officer of Miller Heiman, Inc., he implemented an effective international strategy and redesigned the business model to position the company as a brand leader in executive development. The independent distribution model he and his team built became a model for other companies to follow and contributed greatly to outstanding customer experiences and extremely high retention rates. Sam also previously held senior positions at Corporate Express (now owned by Staples), Kinko’s, Inc. and British Telecom.

In addition to his professional experience, Reese serves on multiple boards, mostly in the technology space. He is the author of two published books on account management and an experienced keynote speaker. He holds a B.S. in Business Administration from the Leeds School of Business at the University of Colorado and has completed various executive programs at Stanford University and Northwestern University.

Tim Call, Senior Vice President – Western Region

Tim Call brings an extensive background in sales management, growth-driven strategies, lead generation and business development to his role as senior vice president of Field Operations at Vistage. During Tim’s 14 year career at Miller Heiman, Inc., he was instrumental in improving top-line revenue and driving sales growth. His work with and belief in an independent channel of business entrepreneurs provided an opportunity for him to operationalize a unique business model. Tim’s experience in leading a field-based organization was a key driver in the company reaching both top-line growth targets and profitability goals. Prior to that, Tim served as area vice president at Kinko’s, where he turned around the struggling region and grew it 300% over a three year period.

Tim graduated from the University of San Diego with a Bachelor’s degree in Business Administration.

Brian Casazza, Chief Operating Officer

As Chief Operations Officer at Vistage, Brian is responsible for leading all operations at Vistage. Brian joined Vistage in 2012 as Chief Information Officer and led the IT, Digital Products and Facilities teams for 8 years modernizing the organization’s technology infrastructure before transitioning to his current role in 2021Prior to that, Brian was the CEO, USA of Zed Worldwide. In that role, he drove Zed’s strategy of delivering cross platform digital entertainment as a member of its global operational board, by focusing on product innovation and process improvement to significant results. He was instrumental in the successful sale of MonsterMob Group PLC to Zed in 2007, where he directed the company’s day-to-day operations in North America.

Brian also co-founded 9 Squared Inc. where he grew the business from $0 to $100 million in 5 years by developing an innovative business strategy and a focus on continued development of nextgen mobile entertainment services. Brian has been named one of the Denver Business Journal’s 40 Under 40, Global Telecom’s Business 40 Under 40, and a finalist in the Ernst & Young Entrepreneur of The Year awards. He holds an MBA in Venture Management from the University of Denver – Daniels College of Business.

John DeBord, Senior Vice President – Central Region

John DeBord brings more than 25 years of sales leadership experience from such great companies as Kinko’s, FedEx, OfficeMax and Grainger. Most recently, John was SVP Sales at Diversified Foodservice Supply, the market-leading distributor of parts, supplies and equipment to the food-service industry. Prior to that, he served as director of sales and director of coverage at Grainger, where he led inside sales teams and developed new sales roles, models and structures that improved results and productivity.

John has a proven track record of leading and developing teams that span marketing, sales operations and strategy. His expertise is vital in helping Vistage achieve its growth targets by guiding its efforts to develop diverse, high-performing peer groups for our members.

John earned a Bachelor’s degree of Arts from Baker University.

James Deveson, Chief Information Officer

James Deveson brings more than 25 years’ experience in enterprise information systems, and the innovative application of technology in global enterprises to Vistage.  As Chief Information Officer, James is responsible for all aspects of Vistage’s technical service delivery including software development, IT operations, business intelligence and facilities. James’ background includes R&D, marketing, and product management, datacenter operations and service. Prior to working at Vistage he was the Senior Director of IT at Overland Storage, and held senior positions at IT channel and media companies in the UK and Europe.

James holds a B.Eng.(Hons) degree in Aeronautical Engineering from the University of Bristol, and various industry certifications including CISSP.

Joe Galvin, Chief Research Officer

Joe Galvin is responsible for providing Vistage members with the most current, compelling and actionable thought-leadership on the strategic issues of small and midsized business. This proprietary research is focused on best practices from the exclusive Vistage community of more than 23,000 CEOs, senior executives and business owners across a broad array of industries in 20 countries. Through collaboration with other thought leaders and curation of the highest quality content, Vistage members benefit from impactful business research on the strategic challenges and opportunities they face.

Joe’s mission is to continuously uncover, measure and analyze the innovations and emerging trends that drive the performance of the most successful small and mid-sized businesses.

Joe is an established thought leader and business analyst from his former roles as chief research officer for CSO Insights – Miller Heiman, vice president of sales optimization strategies at SiriusDecisions and vice president / research director CRM for Gartner. He has researched and presented to business leaders around the world on advanced concepts in customer management, world-class sales performance and CRM-SFA Technology. Joe has published more than 400 research briefs and engaged audiences at hundreds of conferences, forums and executive presentations.

In addition to 15 years as a business analyst, Joe learned the importance of the customer with 17 quota bearing years as a sales professional in client facing roles in field sales and sales management. Joe also created and led the global sales operations team at Gartner during years of expansive growth. Joe brings expertise in customer management, sales strategy, sales performance, sales productivity, sales technology, and marketing automation to Vistage.

Joe graduated with a Bachelor’s degree from Illinois State University.

Tim Gray, Senior Vice President – Southern Region

Tim Gray brings more than 30 years of sales and operational leadership to the senior vice president position at Vistage. For the past three years, he has worked closely with Chairs to grow the Vistage community in and around Texas as a regional executive. Previously, he worked for 38 years with business information giant Dun & Bradstreet to help C-suite and government leaders identify business solutions, earning the firm’s top performance awards for his leadership of sales and operations teams.

He has also devoted his leadership experience to fighting poverty by fundraising for numerous nonprofits, including his own organization CARE4 Kids, which worked to feed children in rural Costa Rica.

Tim earned a Bachelor’s degree of Arts from the University of North Carolina at Chapel Hill.

Mike Hammel, Chief Marketing Officer

Mike Hammel is responsible for overseeing the overall acquisition and retention marketing strategies at Vistage, including branding, lead generation, inside sales, regional marketing, public relations, and member communications. Prior to joining Vistage, Mike was the head of Marketing for Garden Fresh Restaurant Corporation. In that role, he led all aspects of the company’s go-to-market strategy, including advertising, social media, influencer marketing, local marketing, analytics, pricing, and guest satisfaction.

Mike has also provided strategic marketing consultation services to a variety of advertising agencies, and small to mid-sized restaurant and retail chains.  He received a degree in Psychology from Santa Clara University.

John Kenney, Senior Vice President of US Sales Operations

John Kenney brings 25 years expertise in building and leading Fortune 1000 company sales operations on a national scale in the consumer goods, franchise, business services and sports entertainment industries. In his current role as senior vice president of US Sales Operations, he is responsible for optimizing our world-class sales organization by integrating field effectiveness with operational productivity at our San Diego headquarters to ensure full member value is delivered to our community. Since joining Vistage in 2008, John has led all internal sales, service and retention operation activities for the company, helping Vistage to deliver its largest membership count in its 60-year history.

His previous career positions include executive sales roles with E & J Gallo Winery, The Upper Deck Sports Company and Mail Boxes Etc. Corporate.

John earned a Bachelor’s degree of Science in Sociology from Denison University, Ohio where he became their first athlete ever drafted by a professional sports organization, selected by the Pittsburgh Pirates in the 23rd round of the amateur baseball draft in 1982.

Andy Nielsen, Senior Vice President, Products and Strategy

Andy Nielsen brings more than 15 years of experience working with companies ranging from startups to Fortune 100 companies. He most recently started Valor Consulting Group, working primarily with startups and nonprofits in Southern California. His previous consulting experience also includes LEK Consulting, where he focused on the Firm’s Private Equity and Aviation practices.

Prior to LEK, Andy was Consulting Actuary at Towers Watson. He also worked as VP Business Development at Specialized Data Systems, advising and driving strategic initiatives for a niche financial software developer, and as Actuarial Assistant at Great-West Life in their health care business.

Andy is a Fellow of the Society of Actuaries, earned his B.S. in Actuarial Science from Ball State University, and earned his M.B.A. from Harvard Business School.

Elias Olmeta, Chief Financial Officer

Elias Olmeta leads the accounting and finance functions of the company while playing a significant role, both strategically and operationally, in driving the company forward. Elias has 25 years of financial leadership experience at companies such as Solera Holdings, Cambridge Place Investment Management Inc. and JP Morgan Chase & Co. Elias has a proven track record as CFO. Most recently he served as executive vice president and chief financial officer at Mitchell International, a billion dollar revenue provider of technology solutions to the property and casualty insurance industry.

Elias received a Bachelor’s degree in Economics and an MBA from the University of Rochester.

Lee Peters, Senior Vice President – Eastern Region

Lee Peters brings more than 25 years of experience in sales management and operational excellence, including five years overseeing Northeastern region field operations for Vistage. Prior to Vistage, Lee served as a regional manager for Enterprise Rent-A-Car, where he led all Connecticut and Western Massachusetts daily rental operations consisting of 46 locations, 300+ employees and an $85 million P&L.

He has a proven track record of building thriving cultures and developing teams to perform at the highest levels. At Enterprise, he was the first sales leader in the Northeast region to earn the company’s highest recognition for sales, ranking as one of the top performers in the organization.

Lee holds a BS in Business Administration from Bloomsburg University.

Mary Ellen Sheehy, Senior Vice President of Member Programs and Alliances

Mary Ellen brings more than 25 years of business development, sales, marketing and events experience to her role of senior vice president of Member Programs and Alliances. Prior to joining Vistage, she spent 16 years at Gartner, where she served in a number of leadership roles within the $160m worldwide events organization, including six years as group vice president, Strategy and Planning, more than three years as vice president of business development, and three years as director of sponsorship sales. Most recently, she served as the managing director for the Dartmouth College Fund, Fellows Program at Dartmouth College.

Mary Ellen holds a BA in English Literature from the University of Michigan.

Teigue Thomas, Chief Legal and Administrative Officer

Teigue Thomas is responsible for Vistage’s worldwide legal operations and compliance as well as for global human resources functions.

Teigue’s experience of more than 25 years includes leadership roles in legal, HR and other administrative functions in companies ranging from privately-held startups to multi-billion dollar global public companies. Before joining Vistage in 2014, she was General Counsel and Corporate Secretary of Acer America Corp., one of the world’s largest computer companies. Prior to Acer, Teigue was General Counsel and led administrative functions at technology giant Gateway, Inc., and previously served as lead trial counsel in state and federal litigation for Zurich Financial Services in Boston. Teigue is also co-founder of, which provides professional editing services to consumers for video captured on cell phones and other devices, and has served as advisor for other startup companies.

A frequent speaker at local and national conferences on a variety of topics, Teigue served on the Global Board of Directors of the Association of Corporate Counsel (ACC), the leading association of in-house lawyers with more than 45,000 corporate counsel members worldwide, and also served as president of ACC’s chapters in both San Diego and Los Angeles/Orange County. She has served on the board of Providence Speech and Hearing Center, now a part of Children’s Hospital of Orange County, and for more than 10 years has been a volunteer leader for the Boy Scouts of America.

Teigue’s education includes a BA in Marketing from Bucknell University, a JD from New England School of Law in Boston, where she was an editor of The New England Law Review, and study at the Boston University MBA program.