X0609 4 2026-03-19 0 0001865631 NEXTNAV INC. NN 0001945586 Black James S false 11911 FREEDOM DRIVE SUITE 200 RESTON VA 20190 0 1 0 0 General Counsel 1 Common Stock 2026-03-19 4 A 0 8862 0 A 75641 D Common Stock 2026-03-19 4 A 0 27354 0 A 102995 D Common Stock 2026-03-20 4 S 0 6678 17.9107 D 96317 D Common Stock 2026-03-20 4 S 0 2751 18.11 D 93566 D Stock Option (Right to Buy) 20.39 2026-03-19 4 A 0 40231 0 A 2036-03-19 Common Stock 40231 40231 D Represents a bonus grant of restricted stock units ("RSUs"); 100% of the Bonus RSUs vested on March 19, 2026 (the grant date) (the "Bonus RSUs"). Represents a grant of 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. This sale was effected pursuant to a Rule 10b5-1 sales plan adopted by the Reporting Person on December 11, 2025 and the proceeds are intended to be used to satisfy tax withholding obligations in connection with the vesting of the underlying equity awards. The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.51 to $18.33 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The proceeds of this sale are intended to be used to satisfy tax withholding obligations in connection with the vesting of the Bonus RSUs. 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 2026-03-23