BATAVIA, N.Y.–(BUSINESS WIRE)–Graham Corporation (NYSE: GHM), a global leader in the design and manufacture of mission critical fluid, power, heat transfer, vacuum, and advanced mixing technologies for the defense, space, energy, and process industries, today announced that Jonathan W. Painter has been appointed Chairman of the Board of Directors, effective June 15, 2026. The appointment follows the decision by Daniel J. Thoren to retire and step down from his role as Executive Chairman and a