Exhibit 99.1 Worldwide Headquarters 1200 Willow Lake Boulevard St. Paul, Minnesota 55110-5101 NEWS March 25, 2026 Scott Jensen Investor Relations Contact investors@hbfuller.com H.B. Fuller Reports First Quarter 2026 Results Reported EPS (diluted) of $0.38; Adjusted EPS (diluted) of $0.57, up 6% year-on-year Net income of $21 million; Adjusted EBITDA of $119 million, up 4% year-on-year Adjusted EBITDA margin of 15.4%, up 90 basis points year-on-year Increases full-year revenue, adjusted EBITDA, and adjusted ...