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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

Denis Quinlan

Denis Quinlan, General Counsel

Denis Quinlan is general counsel for Calix. Denis oversees all legal and regulatory aspects of Calix's business. Denis has over 20 years of diverse experience in the practice of law. Prior to joining Calix, Denis served as senior counsel to Motorola, Inc., supporting its Wireline Access Networks businesses. He had rejoined Motorola via its acquisition of Next Level Communications, Inc., where he served as associate general counsel. Denis spent time abroad as general counsel to Cesky Mobil, a wireless telecommunications operator in the Czech Republic. Before that, he served a prior term with Motorola, where he helped build that company's extensive portfolio of ownership interests in international wireless operating companies. He has also worked as counsel to insurance-industry giant Aon Corporation and as a litigator with the law firm of Baker & McKenzie. Denis is a graduate of Loyola University of Chicago (BA in English), and received his JD from the University of Illinois College of Law.
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