X0609 4 2026-03-19 0 0001865631 NEXTNAV INC. NN 0001998558 Sorond Mariam false 11911 FREEDOM DRIVE SUITE 200 RESTON VA 20190 1 1 0 0 CEO, President and Director 0 Common Stock 2026-03-19 4 A 0 54704 0 A 1314328 D Stock Option (Right to Buy) 20.39 2026-03-19 4 A 0 724112 0 A 2036-03-19 Common Stock 724112 724112 D Represents a grant of restricted stock units ("RSUs") that will vest over a four-year period. Subject to the Reporting Person's continued service through each of the applicable vesting dates, 1/4 of the RSUs shall vest on the one-year anniversary of March 19, 2026, and 1/16 of the RSUs shall vest quarterly in substantially equal installments thereafter. Represents a grant of stock options (the "Options"). Subject to the Reporting Person's continued service through each of the applicable vesting dates, twenty five percent (25%) of the Options shall vest on the one-year anniversary of March 19, 2026, and the remaining portion shall vest in equal quarterly installments over the subsequent three years. /s/ James Black, by power of attorney 2026-03-23