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.

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.

Dave Rockvam

Vice President & 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.

Dena Bauckman

Vice President, Product Management

Dena Bauckman joined Zix in October 2005 and serves as Vice President of Product Management within the Office of the CTO. Dena has more than 20 years of experience in product management/marketing of security, cloud and networking technology. Prior to her role at Zix, she spent 8 years at Sterling Commerce, an ecommerce company, where she was Director of Product Marketing for the secure managed file transfer solutions. She also worked at Texas Instruments, Soft*Switch, and Hewlett Packard. Dena earned a master of business administration from the University of Dallas and a bachelor’s degree in computer science from California State University East Bay. She has had her Certified Information Systems Security Professional (CISSP) certification since 2007.

Geoff Bibby

Vice President, Marketing

Geoff Bibby joined Zix in September 2003 and serves as Vice President of Marketing. 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.

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.

Kelly Haggerty

Vice President, Product Management & Strategy

Kelly Haggerty joined Zix in April 2016. Kelly has more than 20 years of experience in the software security market. Prior to his role at Zix, he served as Chief Product Officer for, and consultant to, IID, a Software as a Service (SaaS) Security company. For eight years, Kelly held several leadership roles for McAfee (now Intel Security), including Vice President of Product Management for the Security Management Business Unit from 2010 to 2014 and Vice President of the SaaS Business Unit from 2008 to 2010. In addition, he held leadership roles in product management and product marketing at SurfControl (acquired by Websense) and Elron Software. Kelly earned his bachelor’s degree in economics from Christopher Newport University with an emphasis on international business.

Steve Irons

Vice President, Sales

Steve Irons joined Zix in September 2003 and serves as Vice President, Sales. Steve is responsible for overall corporate sales, Zix channel partners and marketing programs. He has been a successful sales leader with Zix for several years and has more than 17 years of sales and sales management experience. Prior to Zix, Steve spent 6 years at Elron Software, an internet security vendor. Previously, he managed a successful sales team at Progress Software Corporation. Steve earned a bachelor’s degree in business administration from Northeastern University.

Bill Kadonsky

Vice President, Business Operations

Bill Kadonsky joined Zix in March 2004 and serves as Vice President, Business Operations. Bill is responsible for the company’s sales operations and sales support teams and business processing units. He focuses on improving organizational efficiency and expanding Zix's revenue generation capability. Prior to Zix, Bill served as Vice President and General Manager of Entrust@YourService, a PKI managed services business unit of Entrust, Inc. Previously, He was President of Practical Software Solutions, Inc., a technology and management consulting firm and also served as an analyst at the National Security Agency. Bill earned a bachelor’s degree from the University of Wisconsin.

Bhavin Merchant

Vice President, Corporate Development

Bhavin Merchant joined Zix in May 2017 and serves as Vice President, Corporate Development. He leads strategic growth initiatives for Zix, leveraging nearly 20 years of experience in technology investment banking. Before joining Zix, Bhavin led BVM Consulting from 2014 to 2017. Previously, he was a technology investment banker at Wells Fargo Securities, UBS Securities and Merrill Lynch & Co. Inc. During his career he has completed 50 transactions totaling more than $5 billion, advising leading, global technology companies on strategy, business development, capital raising and merger and acquisitions. Bhavin earned his bachelor’s degree in business administration from the Wharton School of the University of Pennsylvania.

Russell Morgan

Vice President, Client Services

Russell Morgan has served as our Vice President, Client Services since September 2002. Prior to Zix, he worked at Entrust, Inc. in information technology security, where he held a variety of senior management positions, including director, professional services and senior director, Entrust.net. At Entrust, Russell founded the professional services organization and then managed the business and technical operations for the Entrust.net business unit. Previously, he held several management positions at Lockheed Martin (aerospace), where he specialized in secure messaging and military command and control systems. Russell is a professional engineer with 30 years experience in managing, delivering and supporting complex customer-focused technology solutions. He holds a Bachelor of Engineering degree from Concordia University, Montreal, Quebec, Canada.

David Robertson

Vice President, Engineering


David Robertson has served as our Vice President, Engineering since March 2002. David has over 35 years of experience in the internet and telecommunications industries, with specific expertise in hosted network architecture, security technology, communication protocols, software systems and wireless infrastructure. From 1981 through 2000, he was employed by Nortel Networks (telecommunications), where he held technology Vice President positions in the Wireless, Carrier and Enterprise Divisions. From 2001 to 2002, he participated in creating technology startup companies with STARTech Early Ventures (venture capital). He has been a participant in several industry standards-setting groups and serves with the City of Richardson Chamber of Commerce. He holds a Bachelor of Science degree in Electrical Engineering from the University of Waterloo, Canada, and a Master’s degree in Engineering from Carleton University, Canada.

Noah Webster

Vice President & General Counsel

Noah Webster joined Zix as Vice President and General Counsel in June 2018. Noah has nearly 15 years of legal experience in security, compliance and intellectual property. He contributes a regular column with the Association of Corporate Counsel, the world’s largest community of in-house counsel, and he is an active speaker at intellectual property and compliance events. Prior to joining Zix, Noah worked for eight years at BlackBerry, serving most recently as General Counsel, Mobility Solutions, and holding other legal roles including Global Compliance Counsel and Head of Patent Litigation. Before BlackBerry, Noah worked for Kirkland & Ellis in Chicago, where he represented and advised clients in patent litigations, trademark infringement and general intellectual property matters. Noah earned his juris doctorate at 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. Noah 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.