Finneas has been involved in multiple high-profile events, including marrying Claudia Sulewski in a ceremony officiated by his sister Billie Eilish, supporting Palestine in solidarity with Macklemore, and being announced as a keynote speaker at the 2026 Guild of Music Supervisors conference. He also joined other artists in honoring Feist's induction into the Canadian Songwriters Hall of Fame and paid tribute to Glen Hansard following his passing. Meanwhile, Billie Eilish and Finneas were seen participating in a pickleball benefit event with Angelina Jolie.