Mimecast Appoints Graham Douglas to Chief Customer & Revenue Officer 

Esports PH | APAC – October 17, 2025 – Mimecast, a global cybersecurity leader redefining how organizations secure  human risk, today announced the appointment of Graham Douglas to the position of Chief Customer &  Revenue Officer. In his new role, Douglas will lead Mimecast’s global customer and revenue operations,  uniting customer success, sales, and go-to-market strategy to further accelerate the company’s growth  and deepen its commitment to customer value. 

“Graham joined Mimecast eight months ago and has demonstrated his expertise in customer  engagement and his strength in running large global sales organizations since day one,” said Marc van  Zadelhoff, CEO of Mimecast. “His passion for building trusted customer relationships and his operational  rigor will help us deliver even greater value to our customers and partners worldwide.” 

“I am thrilled to take on this role at such a pivotal moment in Mimecast’s journey,” said Douglas. “Our  commitment to innovation and customer success is unmatched in the industry. I look forward to working  with our talented teams across the globe to help our customers thrive and to drive the next era of  Mimecast’s growth.”  

Douglas was most recently the Senior Vice President of the Americas at Mimecast and brings more than  25 years of experience building and scaling high-performing teams across the cybersecurity and  technology sectors. Prior to Mimecast, he served in senior global leadership roles at Cloudera, Momentive AI, and Oracle, where he managed enterprise sales teams across North America and Europe during a ten-year run. His proven track record of delivering customer-centric growth and operational  excellence makes him an ideal fit for Mimecast’s next phase of expansion. 

A Scotsman by birth, Douglas graduated from the University of Strathclyde and RMIT University. With his  global perspective and extensive experience in cybersecurity and SaaS, he will further strengthen  Mimecast’s executive team as the company continues to distinguish itself as a leader in securing human  risk. Douglas resides in the US, just outside of Boston, MA.  

About Mimecast 

Mimecast is a global cybersecurity leader redefining how organizations secure human risk. Its AI powered, API-enabled connected human risk platform is purpose-built to protect organizations from the  spectrum of cyber threats. Integrating cutting-edge technology with human-centric pathways, our  platform provides enhanced visibility and strategic insight. 

By enabling decisive action and empowering businesses to protect their collaborative environments, our  technology safeguards critical data and actively engages employees in reducing risk and enhancing  productivity. More than 42,000 businesses worldwide trust Mimecast to help them keep ahead of the  ever-evolving threat landscape. 

From insider risk to external threats, customers get more with Mimecast. More visibility. More agility.  More control. More security.

Mimecast and the Mimecast logo are either registered trademarks or trademarks of Mimecast Services  Limited in the United States and/or other countries. All other third-party trademarks and logos contained  in this press release are the property of their respective owners.