Mimecast Media Kit

Marc van Zadelhoff joined Mimecast as the company's second CEO and member of the board in January 2024, where he will lead all aspects of the business and guide the company as it enters its third decade of operation.

He is an accomplished executive with 25 years of experience in the cybersecurity industry. Prior to joining Mimecast, Marc was the CEO of Devo Technology, a cloud-based logging platform that he led through an intense growth phase where they raised $350M and tripled revenues. He also spent time as COO at LogMeIn, and was GM /CEO of IBM Security, an IBM Business Unit that he co-founded. Under his leadership, IBM Security grew to 8,000 employees and $2.5 billion in revenue.

Marc is a curious and committed leader that puts Mimecast’s 2,200+ employees first and works alongside them to ensure customer organizations can work protected. He was born in the Netherlands and currently resides in the Boston-area with his wife and three daughters. He holds an MBA from The Wharton School of the University of Pennsylvania and obtained a B.A. from Bowdoin College.

Masha Sedova, co-founder of Elevate Security, has made her mark in cybersecurity through her practical and human-centered approach to the field. Under her leadership, Elevate Security's innovative platform significantly reduced user-related risks for enterprises. This led to its acquisition by Mimecast in 2024 where she now serves as VP, Human Risk Strategy.

Honored by Fast Company in 2021 for her creativity in business, she previously honed her expertise at Salesforce, where she pioneered engaging security awareness initiatives through gamification, thereby redefining industry standards. A top-rated speaker at Black Hat and RSA, Masha also supports tech inclusivity as a CompTIA Spark board member.

As co-founder and CEO of Aware, Jeff Schumann recognized a growing need for enterprises to understand the new ways that employees collaborate in the digital workplace. After beginning his career in cyber intelligence collaborating with the Central Intelligence Agency to intercept dark web terrorist communications, his technical knowledge propelled him to co-found Aware, which was acquired by Mimecast in 2024.

From security, governance, and eDiscovery in enterprise social networks to real-time insights about every aspect of how the business runs, Jeff’s vision lies in helping organizations to manage risk and elevate the voice of the employee. Under Jeff’s leadership, Aware emerged as a market leader in the creation of safe, secure, and responsible enterprise AI.

Rob Juncker is a savvy innovator in the human risk management space. He joined Mimecast from its acquisition of Code42 – where he held the title of Chief Technology Officer. In his role, Rob leads software development and delivery teams. With an eye to the evolving work landscape, he ensures that security products are built to address the latest risk vectors, including AI and source code leak and theft.

Rob brings more than 20 years of security, cloud, virtualization, mobile and IT management experience to Mimecast. Although he grew up as a hacker, he’s happy to be on the “good side” now, working alongside many CIOs and CISOs of Fortune 500 companies to ensure their networks and users are secure.

Adenike Cosgrove joined Mimecast in November 2024 as Chief Marketing Officer. Adenike Cosgrove leads Mimecast’s global marketing organization, driving strategic growth and positioning for the company in new and existing markets. Adenike is an accomplished technology executive with expertise across the spectrum of product and business strategy including human risk management, data privacy and compliance. Adenike has close to 20 years’ experience in the cybersecurity industry.

Prior to joining Mimecast, Adenike spent nine years at Proofpoint, serving as marketing leader in EMEA, following the company’s acquisition of Return Path Email Fraud Protection, where she led product marketing and served as Vice Chair of the DMARC.org working group. Earlier in her career, Adenike worked as lead EMEA advisor to security and risk professionals for Forrester Research and Canalys, where she developed a deep understanding of CISO challenges and helped clients with their information and cybersecurity strategies.

Sean Brady is an accomplished executive with extensive experience in product management and marketing within the technology and cybersecurity sectors. A market and product strategist with strong execution fundamentals, Sean is experienced in growing teams with an eye for tangible outcomes.

As the Senior Vice President of Product Management at Mimecast, Sean oversees all product management and marketing activities for the company’s portfolio. Previous roles include Senior Vice President and Vice President positions at Sophos, where Sean led product management for multiple cloud-based platforms. Sean also held senior marketing and product management roles at Arbor Networks, Boundless Spatial, Vorstack, and RSA, demonstrating a strong track record in growing product portfolios, driving demand generation, and negotiating high-value vendor relationships.

Angel Grant has proven and extensive experience in all aspects of product go-to-market strategy, development and execution through connecting sales, global marketing, product marketing and product management teams. She’s a savvy growth leader, transforming legacy Fortune 500 company brands.

Angel has been globally recognized as an authority on cybersecurity scams and fraud. This recognition has led her to serve on the PCI Council Board of Advisors, FS-ISAC Board, Federal Reserve Secure Payments Task Force and NACHA’s Payments Innovation Alliance Risk, Regulatory and Security Advisory Committees.

Stan de Boisset is a highly accomplished executive with over 20 years of experience in the technology industry. He is widely recognized as a hands-on builder who consistently delivers high-quality results and is known for his ability to lead high-performing sales and partner sales teams.

Most recently, Stan served as the Global Vice President of Partner Ecosystem at Jumio, a leading provider of identity verification solutions. During his time at Jumio, he built and led a partner sales team responsible for growing and developing new business through a network of partners.

Throughout his career, Stan has demonstrated a strong track record of success in building and leading sales and partner sales teams, driving revenue growth, and expanding market share.

Janet Prosper was named Chief Human Resources Officer in November 2023. She joined Mimecast in February 2020 as Senior HR Director and has served as interim CHRO since October 2022, and Vice President, Human Resources, since May 2021. Janet leads Mimecast’s diversity, equity, and inclusion initiatives and partners with the executive team to shape the company’s people and organization’s strategic roadmap, driven by 'The Mimecast Way’ values.

Janet has nearly three decades of experience leading HR teams in large, global organizations. A considerable part spent working in software/technology organizations undergoing transformation. She also held senior leadership roles with global responsibilities at CareerBuilder, Ciena and Equifax.

During her career she has led all aspects of human resources: transformation, organizational design, change management, culture and employee offering, talent management, and leader development.

David Call joined Mimecast in May 2023 as Chief Financial Officer. He is an accomplished finance executive with over 20 years of leadership experience in high tech and enterprise software environments. As CFO, Call helps shape the company’s strategic roadmap and plays a key role in helping Mimecast exceed its growth and financial goals, while fostering a collaborative, values-driven culture.

Call most recently served as CFO with defi Solutions. Previously, he spent 7 years at McAfee where he served as business unit CFO for both consumer and enterprise security divisions. Call also spent more than 10 years at Intel in various senior leadership finance roles, including their Software & Services Group and the Intel Platform Security Group, before taking a leadership role at McAfee following Intel’s acquisition.

Chris Dollase joined Mimecast in October of 2017 as deputy general counsel, vice president and chief compliance officer. In February 2023, he was promoted to general counsel and senior vice president to lead the legal, compliance and assurance, risk and control teams at Mimecast. Chris and his team work to provide business centric legal advice to all of Mimecast. The team maintains Mimecast’s culture of integrity and compliance while delivering on the company’s growth strategy.

Mimecast’s legal team helps 40,000+ customers work protected and be successful in an ever-changing threat landscape. Chris is an experienced cybersecurity executive who spent 15 years at RSA, The Security Division of EMC, prior to joining Mimecast. He served as lead counsel for RSA and assistant general counsel for EMC and was a member of RSA’s leadership team.

Chris has helped navigate Mimecast through seven acquisitions during his tenure, and most recently played a vital role in Permira’s acquisition in May 2022.

Chris Wey joined Mimecast in 2024 as the Chief Transformation Officer. With over 25 years of broad enterprise software experience, Chris will be taking on cross-functional, transformative projects to position Mimecast for sustainable growth.

Most recently, Chris was President of the Data Modernization business unit at Rocket Software, where he led engineering and product management and drove GTM success. Throughout his career, he has held a variety of roles including Corporate Development, Strategic Partnerships, M&A Integration, Engineering, and Sales Operations at Carbonite, Avaya and IBM. His consistent focus has been on driving growth, organically and inorganically, in rapidly evolving IT markets, and building the robust organizational infrastructure to support that value creation.

David Helfer joined Mimecast in January 2023 as Chief Revenue Officer. He is an accomplished go-to-market executive with extensive global leadership experience in highly complex infrastructure and security organizations. As CRO, David will lead Mimecast’s global sales organization and help drive its short- and long-term revenue goals.

Prior to Mimecast, David served as vice president of enterprise sales, Americas at GitLab, Inc. His successful international background also includes time as a senior vice president at F5, leading worldwide channels and EMEA sales based in London, UK. David also spent 14 years at Juniper Networks where he helped grow revenue streams in various executive roles.

Sébastien Weber oversees the Mimecast’s development, sales and technical teams in Southern Europe, including France, Italy and Spain. In this role, he helps promote Mimecast’s vision of integrated and effective cyber protection.

Sébastien has spent more than 20 years working for various IT players, such as Streamcore, Expand Networks, Nortel Networks, Riverbed Technology, Versa Networks and F5. Notably, he managed F5 in France, where he supervised the integration of new employees following three acquisitions, developed a robust product portfolio, and boosted F5's sales force.

Alexander Peters joined Mimecast in April 2021 as Sr. Manager of the Sales Engineers Team responsible for the DACH region with a focus on enterprise customers. Previously, he was responsible for the Presales Team in Germany (temporarily DACH) at Symantec (later Broadcom – Symantec Enterprise Division). Most recently, he was in charge of the EMEA Endpoint Specialist Team at Broadcom.

He has more than 15 years of experience in IT security management, security solutions and cloud architectures. Alexander Peters is a Certified Information Security Manager (ISACA) and Certified Information Systems Security Professional (ISC2).

Brian Pinnock joined Mimecast in October 2016, overseeing the sales engineering function in Middle East and Africa. With over 20 years of experience in pre-sales, sales, R&D and Innovation, Brian takes a cutting-edge approach to sales engineering. Prior to Mimecast, Brian was general manager of Innovation at Internet Solutions, a leading African Communications Service Provider (Part of the NTT group of companies).

With his deep domain expertise in network communications, messaging and information security, Brian is pivotal in driving the expansion of cloud-based email security and data protection services in the Middle East and Africa.

Lizelle Hughes joined Mimecast in 2024 and serves as Partner Leader for the ANZ region. With a distinguished career spanning over 21 years of experience, Lizelle has made significant achievements in technical consultancy, technical pre-sales, product marketing, strategy, sales, technology partnerships and channel.

At Mimecast, she spearheads incremental partner generated business through resellers, managed service providers, distributors and the company’s tech alliance partners. Prior to this role, Lizelle was the leader of the ISV & SaaS Partnerships team at Microsoft Australia collaborating with software, SaaS and Startup companies that are innovating to deliver new products and services.

David Sajoto joined Mimecast in 2024, bringing a customer-centric approach to help organizations foster a collaborative culture. David is an accomplished business leader with proven track records in building effective business strategy and GTM plans.

Prior to Mimecast, David served as Senior Vice President for APAC at Vectra AI. He has a tenured career in tech and security, having also worked as a sales leader for fast-paced industry leaders including ExtraHop, Ixia, Gigamon, Fluke Networks, Compuware, BMC Software and Oracle. His approach has received wide acclaim, including recognition as ‘Business Leader of the Year’ in the Asia Pacific Business Awards 2023-2024 for exceptional leadership and significant contributions to business growth and development in the Asia-Pacific region.

Fernando Gualtieri leads Mimecast’s Canadian office, overseeing the customer experience and Mimecast activation for the Canadian market. Fernando is a highly regarded, results-oriented and creative sales executive with a proven track record of sales success across all industry verticals.

Prior to Mimecast, he held roles at other key technology players, including McAfee and Dell EMC. In his leadership, Fernando focuses on instilling operational excellence, coaching team members to reach new heights and leading by example.