Exhibit 99.1 News Release Contacts: Christie Thomas (Investors) Brooke Hart (Media) christie.thomas@hii-co.com brooke.hart@hii-co.com 757-380-2104 202-264-7108 HII Reports First Quarter 2024 Results • Record first quarter revenues of $2.8 billion, up 4.9% compared to first quarter 2023 • Operating income of $154 million, up 9.2% compared to first quarter 2023 • Net earnings of $153 million or $3.87 diluted earnings per share • New contract awards of $3.1 billion, resulting in backlog of $48.4 billion • Comp ...