Leadership

Cloud security thought leaders

Get to know the people behind the company. 

Behind our solutions are people. Not just ordinary people, but experts in development, implementation, troubleshooting, and more. Which means you can rest assured you have the gold standard in email encryption services.

At Zix
After Six

David Wagner

President & Chief Executive Officer

David Wagner joined Zix as President and Chief Executive Officer in January 2016. He is a member of Zix's Board of Directors. Prior to his role at Zix, David held leadership roles at Entrust for 20 years. Most recently David served as President of Entrust from 2013 through 2015, where he led the successful integration of Entrust after its acquisition by Datacard. David delivered revenue growth and led the re-investment strategy to move Entrust solutions to the cloud. He also served as Chief Financial Officer of Entrust from 2003 to 2013. Before joining Entrust, David held various finance and accounting positions at Nortel Networks and at Raytheon Systems. He is a graduate of The Pennsylvania State University where he received an undergraduate degree in accounting and a master’s of business administration.

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David Wagner

President & Chief Executive Officer

I grew up in: State College, PA (the home of the Penn State Nittany Lions)

Previous and Present Roommates: Just me and my wife Jennifer now. We have four grown children; Two are married and we have two grandsons.

When I am not at work you can find me: Running, biking, traveling or in the yard. Pretty much always on the go.

Always in the mood to eat: Tex-Mex or Thai food

Something you won’t find in my bio: I was born on the North Shore of Hawaii less than 400 yards from Pupukea Beach. It’s still my favorite place in the world.

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At Zix
After Six

Ryan Allphin

Chief Product Officer

Ryan Allphin joined Zix in November 2020 and serves as Chief Product Officer where he leads all Product and Technology. Ryan brings over 25 years of experience in building and delivering traditional and cloud-based, enterprise-grade networking, cybersecurity and data intelligence technology solutions. Prior to his role at Zix, Ryan served in several leadership roles including 14 years in cybersecurity working at McAfee. While at McAfee, he led the Security Management business unit as SVP & GM where he expanded the business through organic and inorganic innovation and double-digit growth. Ryan has a wide range of experience in product and business strategy, customer engagement and technology innovation. He is a graduate of Utah Valley University where he received a computer science degree.

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Ryan Allphin

Chief Product Officer

I grew up: Skiing, hiking, running, biking in the Mountains of Utah

Previous and Present Roommates: I have a blast adventuring with my wife Elycse and sometimes we invite our 4 children

When I am not at work you can find me: Outdoors (see above) and enjoying time with my family

Always in the mood to eat: Indian & Asian food, but will try most anything :)

Something you won’t find in my bio: First job as an early teen was in our family bakery called “Our Mom’s Pies”, mom was a great chef and put us to work!

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At Zix
After Six

Geoff Bibby

Chief Marketing Officer

Geoff Bibby joined Zix in September 2003 and serves as Chief Marketing Officer. Geoff has more than 15 years of experience in high tech marketing. Prior to Zix, he spent 6 years at Entrust Inc., an internet security vendor, where he served in various management roles, including Marketing Director for Entrust European operations. Geoff earned a bachelor of commerce degree with honors in marketing from the University of Guelph in Guelph, ON, Canada.

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Geoff Bibby

Chief Marketing Officer

I grew up in: Ontario, Canada

Previous and Present Roommates: Beautiful wife, 3 awesome adult sons, and golden retriever dog

When I am not at work you can find me: Cycling, hiking, curating the best Spotify playlist, and cheering on the Ottawa Senators

Always in the mood to eat: Indian or a good Cheeseburger

Something you can’t find in my bio: Lived oversees in England, and still hasn’t found comparable fish and chips in the States. Feel free to send any recommendations.

LinkedIn

At Zix
After Six

Sheila Carpenter

Chief Information Officer

Sheila Carpenter joined Zix in June of 2019 as Chief Information Officer. Sheila oversees security, IT, business applications and compliancy. Before coming to Zix, Sheila was Vice President of IT, Cloud Services Operation for Entrust Datacard. Sheila has worked in the software IT space for over 25 years. She began her career working with business information systems at Mitel Networks, and worked with many startups to implement SaaS offerings, introduce security frameworks and IT service management capabilities. With a strong commitment to promote diversity in security, Carpenter launched the Women’s Network of Ottawa for Entrust Datacard and has also implemented the Women in Security group at Zix | AppRiver.

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Sheila Carpenter

Chief Information Officer

I grew up in: Ottawa

Previous and Present Roommates: My husband and I but we enjoy visits from our children and granddaughter.

When I am not at work you can find me: Running, walking the dogs or being on the water at our cottage near Ottawa.

Always in the mood to eat:  ice cream

Something you won’t find in my bio:  I love to golf

LinkedIn

At Zix
After Six

John Di Leo

Chief Revenue Officer

John Di Leo joined Zix in December 2019 and serves as Chief Revenue Officer. Before joining Zix, John held the role of president at Broad Pointe Consulting from 2016 to 2019. Previously he was Chief Revenue Officer for Entrust Datacard for nearly 7 years and NCR Corporation Region Vice President – North American for more than 25 years. He has a master of Science in Business from The John Hopkins University – Carey Business School.

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John Di Leo

Chief Revenue Officer
LinkedIn

At Zix
After Six

Dave Rockvam

Chief Financial Officer

Dave Rockvam joined Zix as Vice President and Chief Financial Officer in June 2016. Dave brings a wealth of experience in the data security market and more than 20 years of experience in investor relations, financial planning, and business and corporate development. Prior to his role at Zix, Dave served in several executive roles during 18 years with Entrust, including Chief Investor Relations Officer and CFO of Asia Digital Media, an Entrust joint venture. He also held executive roles at Entrust such as General Manager of Entrust Certificate Services, Chief Marketing Officer, and SVP of Product Marketing. Dave began his career at Nortel Networks, where he served in various financial leadership positions. He earned a master of business administration from The University of Texas at Dallas and an undergraduate degree from Texas Tech University.

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Dave Rockvam

Chief Financial Officer
LinkedIn

At Zix
After Six

Noah Webster

Chief Legal Officer

Noah F. Webster has served as our Chief Legal Officer since June 2018. Mr. Webster has over 15 years of legal experience in negotiating agreements, security, compliance and intellectual property. Prior to joining Zix, Mr. Webster worked for eight years at BlackBerry, serving most recently as General Counsel, Mobility Solutions, and holding other legal roles involving privacy and anticorruption legal compliance, M&A, and patent litigation. Before BlackBerry, Mr. Webster worked for Kirkland & Ellis in Chicago, where he represented and advised clients in patent litigations, trademark infringement and general intellectual property matters. Mr. Webster earned his Juris Doctorate degree from the University of Illinois College of Law and clerked with the U.S. District Court for the Eastern District of Michigan and the High Court of American Samoa. He began his career serving as a U.S. Army Engineer Officer. He is a graduate of the U.S. Military Academy, where he earned an undergraduate degree in mechanical engineering. Mr. Webster is a member of the bar for the states of Texas and Illinois. He also holds certification as a Leading Professional in Ethics & Compliance and is registered to practice before the United States Patent and Trademark Office.

LinkedIn

Noah Webster

Chief Legal Officer

I grew up in: Limerick and Sligo (Ireland) & Schaumburg, Illinois (USA)

Previous and Present Roommates: My wife, two kids, and a Portuguese Water Dog

When I am not at work you can find me: Playing hide-and-seek with the kids

Always in the mood to eat: Ice Cream

Something you won’t find in my bio: I’ve surfed places like: Bali, American Samoa, Lake Michigan, and Cornwall

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Board of Directors

Mark J. Bonney

Mark J. Bonney joined our Board in January 2013. He currently serves as President and CEO of On Board Advisors, LLC, a financial and strategic advisory firm.  Since July 2020, Mr. Bonney has been a member of the Board of Directors of Title Shop Holdings, Inc., a specialty retailer of natural stone, man-made tile and related materials. From October 2019 to December 2019 Mr. Bonney was independent Chair of the Board of SeaChange International, Inc., (NASDAQ: SEAC), a provider of end-to-end video delivery and management software solutions for cable wireless, OTT and other content providing enterprises. From April 2019 to October 2019 he was Executive Chair and Principal Executive Officer of SeaChange.  From August 2017 to April 2019 he was a Director and Chair of the Audit and Compensation Committees of SeaChange.  From May 2018 until its merger with Taptica, PLC in April 2019, he served as President and Chief Executive Officer and a director of RhythmOne PLC, (LSE AIM:RTHM), a provider of digital advertising solutions. Until its sale in August 2017, he served as President and Chief Executive Officer and a director of MRV Communications, Inc., a supplier of network equipment to the telecommunications industry. Mr. Bonney served as an independent Director and Chair of the Audit Committee of MRV from April 2013 until joining the management team in August 2014.  He also served as a Director and Chair of the Audit Committee and the Corporate Governance and Nominating Committee of Sigma Designs, Inc., (NASDAQ:SIGM), a provider of high-performance system-on-a-chip semiconductor solutions enabling the convergence of the smart home, from August 2012 through August 2015. He was executive vice president and Chief Financial Officer of Direct Brands, LLC, a privately owned direct to consumer media company from 2010 to 2012, vice president and general manager of the Authentication Solutions Group of JDS Uniphase Corporation (“JDSU”) an optical technologies and telecommunications firm, from 2008 to 2010 and executive vice president and Chief Financial Officer of American Bank Note Holographics, Inc., (“ABNH”) an optical security device company from 2005 to 2008, before the company’s sale to JDSU. Mr. Bonney also served as an outside director and Chair of the audit committee of ABNH from 2003 until 2005. Mr. Bonney has also held executive roles with technology companies, including president, Chief Operating Officer and a director of Axsys Technologies, Inc., a manufacturer of components and subsystems for aerospace, defense, data storage, medical and other high technology applications from 1999 to 2002 and Chief Financial Officer of Zygo Corporation, a manufacturer of metrology measurement and control systems and optical components for semiconductor, data storage and industrial markets from 1993 to 1999. He received a Master’s degree from the University of Hartford and a Bachelor’s degree from Central Connecticut State University.

Marcy Campbell

Marcy Campbell is currently Vice President Sales, for North America, Australia and Global Sales Operations for PayPal. Prior to this role, Marcy held roles as Vice President & GM for North America, Vice President Worldwide Sales & Accounts for Braintree, (a PayPal Division) and Vice President, North American Sales and Accounts for Braintree.  Prior to joining PayPal, Marcy led  high-performance sales, business development, and marketing organizations  for large and small enterprises  including  Qubole, Engine Yard, Netscape, and IBM. Marcy holds a Bachelors of Arts in History and Communications from the University of Hartford in Hartford, CT, where she was summa cum laude, and a National Regent Scholar.

Taher Elgamal

Taher Elgamal was elected to Zix's Board of Directors in July 2011. Dr. Elgamal currently serves as CTO Security at Salesforce.com. He is also co-founder and Chairman of IdentityMind, Inc. and serves as a director of Intelligent Fiber Optic Systems Corporation and Vindicia, Inc. Dr. Elgamal has also held executive roles at technology and security companies, including as CEO of First Information Security from 2012 to 2013, CSO of Axway, Inc. from 2008 to 2011, CTO of Tumbleweed Communications from 2006 to 2008, CTO of Securify, Inc. from 2001 to 2004, CEO and president of Securify, Inc. from 1998 to 2001 and chief scientist of Netscape Communications from 1995 to 1998. Dr. Elgamal is a recipient of the RSA Conference 2009 Lifetime Achievement Award, and he is recognized as the "father of SSL," the Internet security standard Secure Sockets Layer. Dr. Elgamal was issued several patents in online security, payments and data compression. He received a bachelor's degree in electrical engineering from Cairo University, a master's degree in electrical engineering from Stanford University and a doctorate in electrical engineering from Stanford University.

James H. Greene, Jr.

James H. Greene, Jr. joined our Board in February 2019.  Mr. Greene is a Founding Partner of True Wind Capital Management, L.P. (“True Wind”), a private equity fund manager focused on the technology industry, where he serves on the Investment Committee and is responsible for all aspects of managing the firm.  Prior to founding True Wind in 2015, Mr. Greene was with Kohlberg Kravis Roberts & Co. (“KKR”), a global investment manager, which he joined in 1986.  At KKR, Mr. Greene founded the Global Technology Group in 2004 and led the Group until 2010.  Mr. Greene headed the Industrial Group at KKR until 2013.  Mr. Greene became a Partner at KKR in 1993, a Member in 1996, and an Advisory Partner in 2013.  Prior to joining KKR, Mr. Greene had 14 years of banking experience as a Vice President at Bankers Trust Company.  Mr. Greene currently serves as Chair of Pegasus TransTech (“Transflo”) and is a director of Western New York Energy LLC and of Sysnet Global Solutions.  Mr. Greene also serves as Chair of TWC Tech Holdings II Corp.; Chair of Nebula Caravel Acquisition Corp.; Chief Executive Officer, Chair and a director of Bilander Acquisition Corp.; Chief Executive Officer, Chair and a director of Brigantine Acquisition Corp.; Chief Executive Officer, Chair and a director of Galliot Acquisition Corp., and Chief Executive Officer, Chair and a director of Mistico Acquisition Corp.  He is an Emeritus Trustee of the University of Pennsylvania, a member of the Executive Committee and Board of Penn Medicine, which includes the Perelman School of Medicine and the University of Pennsylvania Health System.  Mr. Greene received a Bachelor’s degree in Economics from the University of Pennsylvania.

Robert C. Hausmann

Robert C. Hausmann was elected to our Board in November 2005, was elected Lead Independent Director in December 2012 and non-executive Chairman of the Board in December 2014. In September 2016, Mr. Hausmann became an Operating Partner with Thoma Bravo, a private equity investment firm. During varying periods from 2016 to the present time, Mr. Hausmann has served the following Thoma Bravo-affiliated companies (all of which are privately held) in the following capacities: Veriforce formerly known as PEC Safety (chairman of board, chairman of compensation committee and member of audit committee); Nixtex Global, Ltd. (member of board, audit and compensation committees); Motus, LLC (member of board and audit committee); Riskonnect, Inc. (member of board and audit committee); and T2 Systems, Inc. (member of board and audit committee). Mr. Hausmann was co-founder, a director and Chief Financial Officer of TetraSun, Inc., a solar cell R&D and Manufacturing company that was sold to First Solar, Inc. in 2013. Prior to co-founding TetraSun, Mr. Hausmann was a consultant to public and private companies with respect to operational and financial management matters, including Sarbanes-Oxley and systems and process re-engineering. He also served as Vice President and Chief Financial Officer of Securify, Inc. (computer security monitoring) from September 2002 through June 2005. From September 1999 through September 2002, Mr. Hausmann served as Vice President and Chief Financial Officer of Resonate, Inc. (network traffic management) and managed that company’s initial public offering. Prior to these positions, he served as Operations Partner and Chief Financial Officer of Mohr, Davidow Ventures, a Silicon Valley-based venture capital partnership; and as the Chief Financial Officer of Red Brick Systems, Inc., where Mr. Hausmann managed the company’s initial public offering. Mr. Hausmann earned a Master of Business Administration degree from Santa Clara University and a Bachelors of Arts degree in Finance and Accounting from Bethel University.

Maribess Miller

Maribess L. Miller was elected to our Board in April 2010. Ms. Miller was a member of the public accounting firm PricewaterhouseCoopers LLP from 1975 until 2009, including serving as the North Texas Market Managing Partner from 2001 until 2009; as Southwest Region Consumer, Industrial Products and Services Leader from 1998 until 2001; and as Managing Partner of that firm’s U.S. Healthcare Audit Practice from 1995 to 1998. Since July 2014, Ms. Miller has served as a member of the board of directors for Triumph Bancorp, Inc. (NASDAQ: TBK) and is currently chair of the Nominating and Corporate Governance committee and member of the audit committee. Ms. Miller serves on the board of D.R. Horton where she chairs the nominating governance committee and sits on the compensation and audit committees.  Ms. Miller is also a member of the board of directors and chair of the audit committee for Midmark Corporation, a privately-held medical supply company. She served on the Texas State Board of Public Accountancy from 2009 until 2015, is past Board Chair for the Texas Health Institute  and the North Texas Chapter of the National Association of Corporate Directors. She also served on the board of the TCU Neeley School of Business. She graduated cum laude with a Bachelor’s degree in Accounting from Texas Christian University. Ms. Miller is a retired Certified Public Accountant.

Brandon Van Buren

Brandon Van Buren joined our Board in February 2019. Mr. Van Buren is a Partner at True Wind Capital, a private equity fund manager focused on the technology industry, which he joined in 2017 and where he serves on the Investment Committee. From 2014 to 2017, Mr. Van Buren was a Principal at Google Capital, the private investment arm of Alphabet Inc., where he led growth equity investments within the technology, media, and telecommunications sectors. Prior to joining Google Capital, Mr. Van Buren was with KKR, a global investment manager, from 2010 to 2012 where he executed leveraged buyout transactions within the technology space. Mr. Van Buren currently serves as a director of Open Lending (NASDAQ: LPRO), a lending enablement platform for the automotive finance market, since 2020, as a director of TWC Tech Holdings II Corp. (NASDAQ: TWCT), a special purpose acquisition company, since November 2020, as a director of Nebula Caravel Acquisition Corp. (NASDAQ: NEBC), a special purpose acquisition company, since December 2020, as a director of Bilander Acquisition Corp. (NASDAQ: TWCB) since February 2021, as a director of Galliot Acquisition Corp. (NASDAQ: TWCG) since February 2021, as a director of Mistico Acquisition Corp. (NASDAQ: TWCM) since March 2021, and as a director of Brigantine Acquisition Corp. (NASDAQ: BRIG) since March 2021. Mr. Van Buren holds a B.S. in Business Administration with concentrations in Finance and Accounting from California Polytechnic State University, San Luis Obispo and an M.B.A. from Harvard Business School, where he was a Baker Scholar.

Dave Wagner

Dave Wagner joined Zix as President and Chief Executive Officer in January 2016. He is a member of Zix's Board of Directors. Prior to his role at Zix, Mr. Wagner held leadership roles at Entrust for 20 years. Most recently Mr. Wagner served as President of Entrust from 2013 though 2015., where he led the successful integration of Entrust after its acquisition by Datacard. Mr. Wagner delivered revenue growth and led the re-investment strategy to move Entrust solutions to the cloud. He also served as Chief Financial Officer of Entrust from 2003 to 2013. Before joining Entrust, Mr. Wagner held various finance and accounting positions at Nortel Networks and at Raytheon Systems. He is a graduate of The Pennsylvania State University where he received an undergraduate degree in accounting and a master’s of business administration.