2
Marc van Zadelhoff
Chief Executive Officer
Mimecast
Email Security- HQ today: London, United Kingdom / Lexington, MA
Reviewed by Swet Parvadiya
Company data updated: November 2026
Leadership History
Mimecast: CEO History
2 leaders · Full leadership timeline
Who is the CEO of Mimecast?
Marc van Zadelhoff is the CEO of Mimecast.
- Current CEO
- Marc van Zadelhoff
- Leaders documented
- 5
| Name | Role | From | To | Years in role |
|---|---|---|---|---|
| Marc van Zadelhoff | Chief Executive Officer | — | Present | — |
| Rafeeq Rehman | Chief Information Security Officer | — | Present | — |
Company Overview
Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom. Mimecast is a leading cybersecurity and cyber resilience company founded in 2003 in London, United Kingdom.
Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security. Mimecast operates a highly scalable software-as-a-service (SaaS) subscription model providing enterprise cloud email security.
1
Rafeeq Rehman
Chief Information Security Officer
Other senior executives
These officers report to the chief executive and are not part of the CEO timeline above.
- Heidi Lorenz, Chief Marketing Officer
- Michael Mooney, Chief Financial Officer
- Amanda Slattery, Chief Human Resources Officer
Challenges & Strategic Context
Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors. Mimecast navigates intense platform competition from native cloud productivity security bundles and evolving threat vectors.
Mimecast CEO and Leadership FAQ
Who is the current CEO of Mimecast?
Mimecast is led by Chief Executive Officer Marc van Zadelhoff, who oversees corporate strategy, global operations, and the execution of the firm's strategic modernization roadmap.
What is the strategic focus of Mimecast's leadership team?
Under Marc van Zadelhoff's direction, Mimecast's executive team focuses on digital platform innovation, customer acquisition, operational efficiency, disciplined capital allocation, and proactive risk compliance.
How is corporate governance structured at Mimecast?
Mimecast operates under a rigorous corporate governance model governed by an independent Board of Directors with specialized audit, risk, governance, and compensation oversight committees.
What cultural values guide Mimecast's executive leadership?
Leadership at Mimecast fosters a culture grounded in customer-centric service, technological innovation, ethical integrity, community responsibility, and long-term financial prudence.
Related Leadership Timelines
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Explore Mimecast
Core profile pages, founders and related research hubs for this company.