The National Science Foundation (NSF) is disbanding its 37 divisions as part of a major restructuring of the agency.[1][2] This consolidation is due in part to President Donald Trump's proposal to cut the NSF budget by 55% from $4 billion for fiscal year 2026, which begins on October 1.[1][2] An unspecified number of layoffs are expected among the agency's 1,700 employees and another round of terminations of grants already awarded, with nearly 1,400 grants worth more than $1 billion canceled in the past 3 weeks.[1] NSF receives more than 40,000 proposals annually, a quarter of which it funds, and division directors have a great deal of approval authority.[1] The new structure will retain the eight directorates, but replace the divisions with "clusters" focused on the president's five priorities: artificial intelligence, quantum information science, biotechnology, nuclear energy, and translational science.[2] The agency also plans to reduce the number of rotating scientists from 368 to 70 by June 9 and introduce a new layer of design review.[1][2] Restructuring also includes changes in management structures, such as relocating offices under the chief manager and directors of directorates under the chief scientific officer.[3]