30 Jan 2026 NSBA Leadership Seminar 2026 NSBA Leadership Seminar Friday, January 30, 2026 (9:00 AM) to Saturday, January 31, 2026 (5:00 PM) Marriott Marquis Washington DC Details You're Registered! DescriptionLocation Marriott Marquis Washington DC 901 Massachusetts Ave NWWashington, DC 20001 Map & Directions