X0508 4 2025-12-19 0 0001865631 NEXTNAV INC. NN 0001881628 Shams Sammaad 11911 FREEDOM DR. STE. 200 RESTON VA 20190 0 1 0 0 Chief Accounting Officer 1 Common Stock 2025-12-19 4 S 0 115 16.91 D 65880 D This sale was effected pursuant to a Rule 10b5-1 sales plan adopted by the Reporting Person on August 15, 2025 and the proceeds are intended to be used to satisfy tax withholding obligations in connection with the vesting of the underlying equity awards. /s/ James Black, by power of attorney 2025-12-19