Exhibit 99.1 GREAT NECK, New York, May 6, 2026 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on the ownership of industrial properties, today announced operating results for the quarter ended March 31, 2026. "Our first quarter results reflect the success of One Liberty's strategic transformation into an industrial-focused platform, with rental income growing 11.6% year over year and industrial properties now comprising 84% of our base rent," stated Patrick J. Callan, Jr. ...