Exhibit 99.1 Assurant Reports First Quarter 2024 Financial Results Increase in First Quarter Earnings and EPS Led by Continued Strong Performance within Global Housing and Growth within Global Lifestyle ATLANTA, May 7, 2024 — Assurant, Inc. (NYSE: AIZ), a leading global business services company that supports, protects and connects major consumer purchases, today reported results for the first quarter ended March 31, 2024. “Our first quarter performance represented a strong start to 2024. Global Housing del ...