FM 2026 is the 27th International Symposium on Formal Methods, organized by the European Formal Methods Organization (FME), an independent association dedicated to promoting the use and research of formal methods in software and systems development. The FM symposium successfully brings together researchers and industry users, focusing on original papers, workshops, tutorials, tool reports, projects, and ongoing doctoral research related to research and industry experience. FM 2026 is both a celebratory occasion and a platform for passionate researchers and practitioners from diverse backgrounds to exchange ideas and share experiences.