NextNav counsel sells 1,878 shares in trading plan

NextNav’s General Counsel sold 1,878 NN shares under a pre-set Rule 10b5-1 plan to cover tax withholding from vesting equity awards, remaining directly holding 89,810 shares.

Rhea-AI Filing Summary

NEXTNAV INC. (NN) reported that its General Counsel, James S. Black, sold 1,878 shares of common stock on September 14, 2026 in an open-market or private transaction at a weighted average price of $15.3431 per share, under a Rule 10b5-1 sales plan adopted on December 11, 2025. The filing states that proceeds are intended to satisfy tax withholding obligations related to vesting equity awards, and that Black held 89,810 shares of common stock directly after the sale.

Insider Trade Summary 10b5-1

Net Seller: 1,878 shares

Net Sell 1 txn

Insider Black James S

Role General Counsel

Sold 1,878 shs ($29K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	1,878	$15.3431	$29K

Holdings After Transaction: Common Stock — 89,810 shares (Direct)

Footnotes (2)

1. F1. 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.
2. F2. The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.94 to $15.62 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.

Key Figures

Shares sold: 1,878 shares Weighted average sale price: $15.3431 per share Sale price range: $14.94–$15.62 per share +2 more

5 metrics

Shares sold 1,878 shares Common stock sold by General Counsel on September 14, 2026

Weighted average sale price $15.3431 per share Average price for the 1,878 NN shares sold

Sale price range $14.94–$15.62 per share Range of individual transaction prices for the reported sale

Shares held after transaction 89,810 shares Direct NN common stock holdings of General Counsel after the sale

Rule 10b5-1 plan adoption date December 11, 2025 Date the sales plan governing this transaction was adopted

Key Terms

Rule 10b5-1 sales plan, weighted average price, tax withholding obligations, vesting of the underlying equity awards

4 terms

Rule 10b5-1 sales plan regulatory

"This sale was effected pursuant to a Rule 10b5-1 sales plan adopted"

weighted average price financial

"The reported price is a weighted average price. These shares were sold"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

tax withholding obligations financial

"proceeds are intended to be used to satisfy tax withholding obligations"

vesting of the underlying equity awards financial

"in connection with the vesting of the underlying equity awards"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did NEXTNAV INC. (NN) disclose in this Form 4?

NEXTNAV INC. disclosed that General Counsel James S. Black sold 1,878 shares of common stock on September 14, 2026 in an open-market or private transaction at a weighted average price of $15.3431 per share.

Was the NN insider sale made under a Rule 10b5-1 trading plan?

Yes. The sale was effected pursuant to a Rule 10b5-1 sales plan adopted by James S. Black on December 11, 2025, according to the footnote to the reported transaction.

How many NN shares does the General Counsel hold after this reported sale?

After the reported transaction, General Counsel James S. Black directly holds 89,810 shares of NEXTNAV INC. common stock, as stated in the Form 4 data.

What price range did the NN shares sell for in this insider transaction?

The footnote states the 1,878 shares were sold in multiple transactions at prices ranging from $14.94 to $15.62 per share, with the reported $15.3431 figure representing a weighted average price.

Why does the Form 4 say the NN insider plans to use the sale proceeds?

The Form 4 states that sale proceeds are intended to be used to satisfy tax withholding obligations in connection with the vesting of underlying equity awards held by the reporting person.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/16/2026 - 08:00 PM Accepted by SEC EDGAR 09/16/2026 - 08:00 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Black James S

(Last) (First) (Middle)

11911 FREEDOM DR.

SUITE 200

(Street)

RESTON VIRGINIA 20190

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
NEXTNAV INC. [ NN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/14/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/14/2026		S(1)		1,878	D	$15.3431(2)	89,810	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.94 to $15.62 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.

	/s/ James Black, by power of attorney	09/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)