Directors

Mr. Listwin has served as chairman of our Board since July 2007 and brings over 30 years of experience in the networking industry to our Board. Since January 2018, Mr. Listwin has served as chief executive officer of iSchemaView, a privately-held medical device company. Mr. Listwin also serves on the board of directors of POET Technologies Inc., AwareX, Inc., iSchemaView, D-Wave Systems, Inc., Robin Systems, Inc. and Teradici Corporation.

Mr. Listwin founded BelizeKIDS.org in 2016, a non-profit organization focused on helping children in Belize, and Canary Foundation in 2004, a non-profit organization devoted to the early detection of cancer, and has served on the board of directors of both organizations since their inception. From January 2008 to January 2009, Mr. Listwin served as chief executive officer of Sana Security, Inc., a security software company, which was acquired by AVG Technologies. From September 2000 to October 2004, Mr. Listwin served as chief executive officer of Openwave Systems Inc., a leader in mobile internet infrastructure software. From August 1990 to September 2000, he served in various capacities at Cisco Systems, Inc., most recently as executive vice president. Mr. Listwin formerly served on the board of directors of Violin Memory, Inc., Isilon Systems, Inc., Openwave Systems Inc. (now known as Unwired Planet, Inc.), TIBCO Software Inc., Redback Networks, Inc. and E-Tek Dynamics Inc., each a publicly-held company. Mr. Listwin also previously served as a member of the board of scientific advisors of the National Cancer Institute.

Mr. Listwin holds an honorary Doctorate of Law from the University of Saskatchewan and a Bachelor of Science in Electrical Engineering from the University of Saskatchewan.

Mr. Bowick brings to our Board extensive experience in advising and managing companies in the technology and telecommunications industries. Mr. Bowick is principal of The Bowick Group, LLC, where he provides technology, product, business and executive-development advice and counsel to clients in the cable television and telecommunications industries. Mr. Bowick also serves on the board of directors of Minerva Networks and ComSonics, Inc.

From 1998 until his retirement in 2009, Mr. Bowick held various positions at Cox Communications. Mr. Bowick joined Cox in 1998 as vice president, technology development, and was named senior vice president of engineering and chief technical officer in 2000. Mr. Bowick retired as chief technology officer of Cox in June of 2009. At Cox, Mr. Bowick was responsible for strategic technology planning, day-to-day technical operations and the development and deployment of technology solutions for the company’s video, voice, high speed data and wireless products, including the development and deployment of telecommunications services, such as circuit-switched telephone, voice over IP, high-speed data, digital video, HDTV, video-on-demand and interactive television. Mr. Bowick was also responsible for network engineering and network operations for Cox’s nation-wide network infrastructure including its national backbone, Metropolitan Area Networks and HFC networks. Prior to joining Cox, Mr. Bowick served as group vice president of technology and chief technical officer for Jones Intercable, Inc., while simultaneously serving as president of Jones Futurex, a designer and manufacturer of triple DES, PC-based hardware encryption devices and provider of contract manufacturing services. Prior to Jones, Mr. Bowick served as vice president of engineering for Scientific Atlanta’s Transmission Systems Business Division, and as a design engineer for Rockwell International, Collins Avionics Division.

Mr. Bowick holds a Master of Business Administration from the University of Colorado and a Bachelor of Science in Electrical Engineering from the Georgia Institute of Technology. Mr. Bowick is a National Association of Corporate Director (“NACD”) Governance Fellow under the NACD’s director credential program.

Ms. Crusco brings to our Board a wealth of experience instilling operational rigor at leading technology companies. Since December 2017, Ms. Crusco has served as executive vice president and chief financial officer at Kony, Inc., a privately-held mobile applications solutions provider. Ms. Crusco also serves on the board of directors of Plantronics, Inc. and QAD Inc.

From August 2016 until November 2017, Ms. Crusco served as executive vice president, chief operating officer and chief financial officer at Epicor Software Corporation, a privately-held software company. Ms. Crusco joined Epicor in May 2011 when the company merged with Activant Solutions Inc., a business management software company where she served as senior vice president and chief financial officer from May 2007 to November 2010, then as executive vice president and chief financial officer. Before joining Activant, she worked for Polycom from 2002 to 2007, rising to the role of vice president of worldwide finance during her tenure. Ms. Crusco has also held a variety of financial roles at Documentum, Inc., Adaptec, Inc. and Price Waterhouse LLP.

Ms. Crusco holds a Bachelor of Science in Business Administration with an emphasis in accounting from California State University, Chico.

Mr. DeNuccio brings to our Board over 25 years of leadership and governance experience at communications technology companies and service providers worldwide. Mr. DeNuccio is presently general partner of Wild West Capital LLC, a private investment firm which he co-founded in July 2012. Mr. DeNuccio also serves on the board of directors of Juniper Networks, Inc., SevOne, Inc. and Zededa.

From February 2014 until April 2017, Mr. DeNuccio served as president, chief executive officer and a member of the board of directors of Violin Memory, Inc., a publicly-held data storage company, which filed a voluntary petition for Chapter 11 bankruptcy protection in December 2016 and was subsequently acquired by a unit of Soros Fund Management LLC. Mr. DeNuccio served as chief executive officer of Metaswitch Networks, a telecommunications hardware and software company, from February 2010 until June 2012. From January 2007 until the present, Mr. DeNuccio has also worked as a private equity investor, both individually and through Wild West Capital. Mr. DeNuccio served as chief executive officer of Redback Networks from August 2001 until its acquisition by Ericsson in January 2007. From 1995 to 2001, he held a number of executive positions at Cisco Systems, Inc., including senior vice president of worldwide service provider operations. Prior to joining Cisco, Mr. DeNuccio was founder, president, and chief executive officer of Bell Atlantic Network Integration, a wholly owned subsidiary of Bell Atlantic (now Verizon Communications). He has also held senior management positions at both Unisys Corporation’s and Wang Laboratories’ network integration and worldwide channel partner businesses. Mr. DeNuccio previously served on numerous public and private boards of directors, including Sandisk, Redback and JDS Uniphase Corporation, each a publicly-held company.

Mr. DeNuccio has a Master of Business Administration from Columbia University and a Bachelor’s degree in Finance from Northeastern University.

Mr. Everett brings to our Board over 30 years of experience in senior management and financial operations at communications technology companies, as well as his background as a corporate attorney. Mr. Everett was named chief financial officer of the year by San Francisco Business Times in 2007 and is admitted to the State Bar of California and the New York Bar.

From May 2007 until his retirement in December 2008, Mr. Everett served as vice president of finance at Cisco Systems, Inc. From April 2003 to May 2007, Mr. Everett was chief financial officer of WebEx Communications, Inc., a web collaboration service provider that was acquired by Cisco. From 2001 to 2003, Mr. Everett served as chief financial officer of Bivio Networks, Inc., a network appliance company. In 2001, Mr. Everett served as chief financial officer of VMware, Inc., an infrastructure software company. From February 1997 to November 2000, Mr. Everett served as executive vice president and chief financial officer of Netro Corporation, a broadband wireless technology provider. Mr. Everett served in several senior management positions at Raychem Corporation from 1987 through 1996, including senior vice president and chief financial officer from August 1988 to August 1993, and was involved in the company’s early fiber to the home initiatives. Before joining Raychem Corporation, Mr. Everett served as a partner in the law firm of Heller, Ehrman, White & McAuliffe LLC. He currently serves on the advisory boards of Moxtra, Inc. and Zuora, Inc. and as chair and trustee of the Santa Fe Chamber Music Festival. Mr. Everett also formerly served on the board of directors and as chairman of the audit committee of Smart Focus, Ltd., a privately-held marketing analytics company, and on the board of directors of Broncus Technologies, Inc., a privately-held medical technology company, including as chairman of the audit committee and member of the compensation committee.

Mr. Everett holds a Juris Doctor from the University of Pennsylvania Law School and a Bachelor of Arts in History from Dartmouth College.

Ms. Makagon brings to the Board extensive experience in global platform strategy, technology, cybersecurity, operations and high technology executive leadership. Since July 2019, Ms. Makagon has served as executive vice president and chief innovation officer at RingCentral, Inc., a publicly-held provider of cloud-based global collaborative communications solutions, and previously served as RingCentral’s executive vice president of innovation from August 2012 to July 2019. From January 2012 to July 2012, Ms. Makagon served as the senior vice president of products of iCrossing, a global digital marketing agency owned by Hearst Corporation.

Mr. Matthews is a marketing and business strategy executive with significant exposure to the telecommunications industry and to global markets. Mr. Matthews brings to our Board over 30 years of experience in the technology industry, and a strong background in telecommunications, software, technology and innovation. Mr. Matthews currently serves as an advisor to the TM Forum, a global trade association with over 850 member companies including communication service providers, digital service providers and enterprises. Since January 2016, Mr. Matthews has served as chief executive officer and chairman of AwareX, Inc., a privately-held software technology company.

From January 2012 through September 2013, Mr. Matthews served as chief corporate development officer for the information technology company AGT International GMBH, where he was responsible for AGT’s research and development, new business ventures and marketing. From September 2008 to December 2011, Mr. Matthews served as head of strategy and business development at Nokia Siemens Networks, a telecommunications company, where he directed the company’s strategic planning and investments, mergers and acquisitions program and strategic alliances and partnerships. From February 2003 to January 2008, Mr. Matthews served as chief marketing officer at Amdocs Inc., a publicly-held software and services provider. From September 1999 to March 2002 he served as the executive vice president, sales and marketing, at Groove Networks, a privately held software company which was acquired by Microsoft Corporation. Prior to this, he served in leadership positions across technology companies in the United States and Australia such as Platinum Technology, Inc. a database management software company which was acquired by Computer Associates, Inc., Sterling Software, a software company which was acquired by Computer Associates, Inc., and Digital Equipment Corporation, which was acquired by Compaq Computer Corporation.

Mr. Matthews has a degree in Civil Engineering from the University of Queensland, Australia.

Mr. Peters brings to our Board a wealth of leadership experience gained over the course of a 28-year career with AT&T, one of world’s largest communications companies. Since February 2018, Mr. Peters has served as president and chief executive officer of NetNumber Inc., a privately-held technology company and serves on its board of directors. Mr. Peters also serves on the board of directors of AwareX, Inc. and UniTek Global Services, Inc.

Mr. Peters formerly served as executive vice president, global customer service for AT&T, Inc., from 2012 until his retirement in 2014. Mr. Peters joined AT&T in 1986, and held various functional roles, including in information technology, sales, engineering and finance until 2000. Mr. Peters then served as vice president, local network planning and project management in 2001. During his subsequent career at AT&T, Mr. Peters served in the following capacities: senior vice president, network engineering from 2003 until 2004; senior vice president, global network technology program management, AT&T Labs in 2005; senior vice president-enterprise systems and software engineering in 2006; executive vice president, global network operations from 2006 until 2009; and chief marketing officer, business from 2010 until 2011. Since retiring, Mr. Peters has provided advisory services to a number of companies, including Accenture, a global management consulting and professional services firm, and J&L Group, a privately-held telecommunications company. In addition to the other current directorships described, Mr. Peters also currently volunteers and serves on the board of directors of the Crandon Lakes Country Club and the Yogi Berra Museum and Learning Center; and serves on the advisory board of the Howe School of Business, Stevens Institute of Technology.

Mr. Peters holds a Master of Business Administration with honors (Beta Gamma Sigma) from Columbia University, a Master of Science in Telecommunications Engineering from Stevens Institute of Technology and a Bachelor of Science in Psychology from Fairfield University, and attended the Harvard University Advanced Management Program.

Mr. Plants brings to our Board extensive experience as a successful investor, director and advisor to public companies. Currently, Mr. Plants serves as chief investment officer of Voce Capital Management LLC, an investment advisor that he founded in 2011. Mr. Plants also serves on the board of directors of Cutera, Inc.

From July 2007 until May 2009, Mr. Plants served as managing director and head of communications technology and media for Needham & Company LLC, an investment banking and asset management firm. Prior to joining Needham & Company, Mr. Plants held a number of executive leadership roles at investment banking firms Goldman Sachs and JPMorgan Chase. Mr. Plants also served on the board of directors of Destination Maternity Corporation, a maternity apparel retailer, from November 2014 until December 2016.

Mr. Plants holds a Juris Doctor from the University of Michigan Law School and a Bachelor of Arts in economics from Baylor University. Mr. Plants is also admitted to the New York Bar.

Mr. Russo has served as Calix’s president and chief executive officer since December 2002. As Calix’s president and chief executive officer, Mr. Russo brings substantial expertise and knowledge regarding our business strategy, markets and operations to Calix’s board of directors. He also brings to the Board an extensive background in the telecommunications and networking technology industries.

From November 1999 to May 2002, Mr. Russo served as vice president of optical strategy and group vice president of optical networking of Cisco Systems, Inc. From April 1998 to October 1999, Mr. Russo served as president and chief executive officer of Cerent Corporation, which was acquired by Cisco. From April 1995 to April 1998, Mr. Russo served in various capacities, including as chief operating officer, at Xircom, Inc., which was acquired by Intel Corporation. Previously, Mr. Russo served as senior vice president and general manager for the hyperchannel networking group of Network Systems Corporation and as vice president and general manager of the data networking products division of AT&T Paradyne Corporation. Mr. Russo served on the board of directors of Vital Network Services, Inc., a privately-held company delivering network lifecycle services, and Xirrus, Inc., a privately-held company providing products that enable high-performance wireless networks.

Mr. Russo attended Swarthmore College and previously served on its board of managers.