144 0001986485 XXXXXXXX LIVE 0001133421 NORTHROP GRUMMAN CORP /DE/ 001-16411 2980 FAIRVIEW PARK DRIVE C/O NORTHROP GRUMMAN CORP FALLS CHURCH VA 22042 703-280-2900 Simpson Kathryn G Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

873 650385.00 141921621 03/02/2026 NYSE Common 02/11/2026 Restricted Stock Vesting Issuer N 873 02/11/2026 Compensation N Kathryn Simpson

2980 Fairview Park Drive Falls Church VA 22042

Common 02/17/2026 779 547294.24 Kathryn Simpson

2980 Fairview Park Drive Falls Church VA 22042

Common 02/19/2026 194 141158.28 03/02/2026 02/28/2025 /s/ Eric Janiak, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Kathryn G. Simpson