Exhibit 99.1 News Release Lockheed Martin Reports First Quarter 2026 Financial Results BETHESDA, Md., April 23, 2026 – Lockheed Martin Corporation [NYSE: LMT] today reported first quarter 2026 sales of $18.0 billion, compared to $18.0 billion in the first quarter of 2025. Net earnings in the first quarter of 2026 were $1.5 billion, or $6.44 per share, compared to $1.7 billion, or $7.28 per share, in the first quarter of 2025. Cash from operations was $220 million in the first quarter of 2026, compared to $1 ...