Exhibit 99.1 News Release Contacts: Brooke Hart (Media) brooke.hart@hii-co.com 202-264-7108 Christie Thomas (Investors) christie.thomas@hii-co.com 757-380-2104 HII Reports Third Quarter 2024 Results and Provides Updated Outlook NEWPORT NEWS, Va. (October 31, 2024) - HII (NYSE: HII) today reported results for the third quarter of fiscal 2024 and provided an update on its outlook. Highlights Third quarter revenues were $2.7 billion Third quarter net earnings were $101 million or $2.56 diluted earnings per sha ...