As with prior summits, the event was invite-only, but inclusive of the NSF CI community, free-to-attend, and targeted at those with leadership, management, and security responsibilities in NSF CI and MREFC projects. Additionally, we included key members of the research community (to better disseminate NSF CI cybersecurity needs and foster transition of their research to practice through CI projects), as well as selected invitees from outside the NSF community.