
Carl Russo
President and Chief Executive Officer
Roger Weingarth
Executive Vice President and Chief Operating Officer
Andy Lockhart
Senior Vice President, International Sales and Marketing
John Colvin
Senior Vice President, North American Sales and Marketing
Mark Dressler
Vice President, Major Account Sales
Nathan Harrell
Vice President, National Account Sales
Ken Grelck
Vice President Regional Sales, East and Canada
Skip Hirvela
Vice President Regional Sales, West
David Seda
Vice President, Field Marketing
Michael Ashby
Executive Vice President and Chief Financial Officer
Kevin Pope
Senior Vice President, Product Development
Todd Ortberg
Senior Vice President, Business and Market Development
Tony Banta
Senior Vice President, Global Manufacturing and Supply
Mehdi Bradaran
Vice President, Product and China Operations
Omar Ramadan
Vice President, Global Customer Services
Jill Von Berg
Vice President, Information Technology
Tish Rutledge
Vice President, Talent and Culture

Michael Ashby
Executive Vice President and Chief Financial Officer
Michael Matthews
Head of Strategy and Business Development, Nokia Siemens Networks
Carl Russo
President and Chief Executive Officer
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Ken Grelck, Vice President Regional Sales, East and Canada
Ken is vice president of regional sales for Calix focused on the Eastern US and Canada. Ken is responsible for all direct sales activities with service providers in these regions. Ken brings a wealth of experience in leading sales organizations in the telecommunications, networking and services industry. Prior to Calix, Ken was a 22 year veteran of Nortel, where he held numerous vice presidential roles, including leadership of North America sales and services, major account sales, Americas sales and marketing, and Sprint sales. Ken holds a BS degree in business administration from the University of New York, an MBA from Campbell University, and served 4-years in the US Air Force.
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