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Executive Team

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

Omar Ramadan
Vice President, Global Customer Services

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

Robert Balsamo
Vice President, Product Strategy

Miguel Alonso
Vice President, Software Products

Jill Von Berg
Vice President, Information Technology

Tish Rutledge
Vice President, Talent and Culture

Denis Quinlan
General Counsel

Directors

Don Listwin
Chairman

Michael Ashby
Executive Vice President and Chief Financial Officer

Michael Everett
Director

Michael Flynn
Director

Adam Grosser
Director

Michael Matthews
Chief Corporate Development Officer for AGT International GMBH

Thomas Pardun
Director

Carl Russo
President and Chief Executive Officer

Omar Ramadan

Omar Ramadan, Vice President, Global Customer Services

Omar is vice president of global customer services for Calix. He has over 15 years of customer service experience in the networking and telecommunications industries. Omar oversees all aspects of customer support, training, documentation, and web-based tools. Prior to joining Calix, Omar was with Advanced Fibre Communications (AFC) working in a number of support-related positions, most recently as director of technical services. At AFC, Omar was responsible for building a technical organization that supported over 750 North American service providers. Before AFC, Omar managed installation activities of outside plant loop electronics at DSC (now part of Alcatel). Omar earned a BS in electrical engineering from Texas A&M University.
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