Company: NXNVW
Filing Date: 2025-04-11
Form Type: DEFA14A
Source: 0001213900-25-031077
Chunk: 0

Company: NEXTNAV INC.
Filing Date: 2025-04-11
Form: DEFA14A
Chunk 0
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 ________________ SCHEDULE 14A
________________ Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934

| Filed by the Registrant                    |     | ☒ |
| Filed by a Party other than the Registrant |     | ☐ |

Check the appropriate box:

| ☐ |     | Preliminary Proxy Statement                                                     |
| ☐ |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐ |     | Definitive Proxy Statement                                                      |
| ☒ |     | Definitive Additional Materials                                                 |
| ☐ |     | Soliciting Material under §240.14a-12                                           |

NEXTNAV INC. (Name of Registrant as Specified In Its Charter) _________________________________________________________________
(Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check all boxes that apply)

| ☒ |     | No fee required                                                                                     |
| ☐ |     | Fee paid previously with preliminary materials                                                      |
| ☐ |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |

Your Vote Counts! For complete information and to vote, visit www.ProxyVote.com Control 

# V70515-P24692 You invested in NEXTNAV INC. and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the stockholder meeting to be held on May 22, 2025. Vote Virtually at the Meeting* May 22, 2025 12:00 PM (ET) Virtually at: www.virtualshareholdermeeting.com/NN2025 NEXTNAV INC. 2025 Annual Meeting Vote by May 21, 2025 11:59 PM ET Get informed before you vote View the Annual Report and Notice and Proxy Statement online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 8, 2025. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-