Former President and Chief Executive Officer, The MITRE Corporation Director Since: Age: Committee(s): Class: April 2018 Independent 67 Compensation, Nominating and Corporate Governance, Finance (Chair) I Director Qualifications Mr. Grasso s experience as Chief Executive Officer of the MITRE Corporation and his board and leadership experience with numerous other scientific, technical, and other organizations, provide deep government sector and global business experience to NetScout. Director Skills Human Capital and Talent Management Innovation & Product Development Leadership Risk Management & Governance Service Assurance & Cybersecurity Industry Strategic Planning Professional Experience and Biography Mr. Grasso is the past President and Chief Executive Officer of the MITRE Corporation, which manages federally funded research and development centers, a position he held from 2006 to 2017. Since 2019, Mr. Grasso has served on the Board of Trustees of Riverside Research, where he serves as Chair of the Special Program Committee and is a member of the Compensation and Governance Committees. He has served on the Board of Trustees of the Virginia Academy of Science, Engineering and Medicine since 2019 and was elected President in 2025. Mr. Grasso is a Permanent Director and Executive Committee member of the Armed Forces Communications and Electronics Association (AFCEA) International s Board of Directors and served as Chairman from 2012 to 2014 and Vice Chairman from 2010 to 2012. Mr. Grasso is the former President of the Board of the National GEM Consortium, a non-profit organization that promotes the participation of under-represented groups in the science, technology, engineering, and math fields, and a former member of the Defense Science Board and the Army Science Board. He has served as a Trustee of the George Mason University Foundation, a member of the Stevens Institute Systems Engineering Research Center Advisory Board, the University of Virginia s Department of Systems and Information Engineering Advisory Board, Howard University s College of Engineering, Architecture and Computer Sciences Board of Visitors, and the Northern Virginia Technology Council. Other Public Company Directorships None.