BUTLER NATIONAL CORP

Public companies file this within four business days when something important happens that investors should know about before the next quarterly report.

BUTLER NATIONAL CORP filed this to release information to investors under Regulation FD — usually a press release, conference presentation, or other event the company considers important. 1 To: Butler National Employees From: Christopher J. Reedy Date: June 1, 2026 Re: Update from Chris Reedy To my friends and colleagues, I wanted to personally share that I am currently undergoing a new course of medical treatment following recent consultations with my physicians at the Mayo Clinic.