Exhibit 99.1 Press Release INVESTOR RELATIONS CONTACT: Ralph Giacobbe 860-787-7968 Ralph.Giacobbe@TheCignaGroup.com MEDIA CONTACT: Justine Sessions 860-810-6523 Justine.Sessions@Evernorth.com The Cigna Group Reports Strong First Quarter 2024 Results, Raises 2024 Outlook • Total revenues for the first quarter 2024 were $57.3 billion • Shareholders’ net loss for the first quarter 2024 was$0.3 billion, or $0.97 per share • Adjusted income from operations for the first quarter 2024 was$1.9 billion, or $6.47 p ...