Exhibit 99.1 News Release Lockheed Martin Reports First Quarter 2024 Financial Results • Net sales of $17.2 billion • Net earnings of$1.5 billion, or $6.39 per share • Cash from operations of$1.6 billion and free cash flow of $1.3 billion •$1.8 billion of cash returned to shareholders through dividends and share repurchases • Reaffirms 2024 financial outlook BETHESDA, Md., April 23, 2024 – Lockheed Martin Corporation [NYSE: LMT] today reported first quarter 2024 net sales of $17.2 billion, compared to$1 ...