NextNav (NN) COO sells 2,370 shares in 10b5-1 tax-driven trade

Rhea-AI Filing Summary

NEXTNAV INC. Chief Operating Officer Susan Brasse Insley reported an open-market sale of 2,370 shares of common stock on March 24, 2026 at a weighted average price of $18.5718 per share. The sale was executed under a pre-arranged Rule 10b5-1 trading plan, with proceeds intended to cover tax withholding obligations from vesting equity awards. Following this transaction, she directly holds 170,273 shares of NextNav common stock, indicating that the sale represents a relatively small portion of her overall position.

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

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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^*

Insley Susan Brasse

(Last) (First) (Middle)

11911 FREEDOM DRIVE

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)
	Chief Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/24/2026

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	03/24/2026		S(1)		2,370	D	$18.5718(2)	170,273	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 August 19, 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 $18.35 to $19.00 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	03/25/2026
	** 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)

FAQ

What insider transaction did NextNav (NN) report for COO Susan Brasse Insley?

NextNav reported that COO Susan Brasse Insley sold 2,370 shares of common stock on March 24, 2026. The shares were sold in an open-market transaction at a weighted average price of $18.5718 per share under a pre-arranged Rule 10b5-1 plan.

At what prices were the NextNav (NN) shares sold by the COO?

The reported weighted average sale price was $18.5718 per share. According to the filing, the shares were sold in multiple transactions at prices ranging from $18.35 to $19.00 per share, with full trade details available upon request.

How many NextNav (NN) shares does the COO hold after this Form 4 sale?

After the reported sale, COO Susan Brasse Insley directly holds 170,273 shares of NextNav common stock. This indicates that the 2,370 shares sold represent only a small fraction of her total direct ownership position in the company.

Was the NextNav (NN) COO’s share sale part of a Rule 10b5-1 trading plan?

Yes. The filing states the sale was effected pursuant to a Rule 10b5-1 sales plan adopted on August 19, 2025. Such plans pre-schedule trades, making the transaction more routine and reducing the significance of its specific timing.

Why did the NextNav (NN) COO sell 2,370 shares according to the Form 4?

The filing explains that proceeds from the 2,370-share sale are intended to satisfy tax withholding obligations related to the vesting of underlying equity awards. This frames the transaction as largely tax-driven rather than a discretionary portfolio shift.

How significant is the 2,370-share sale relative to the COO’s NextNav (NN) holdings?

The COO sold 2,370 shares and now directly holds 170,273 shares of common stock. Based on these figures, the sale appears relatively small compared with her remaining stake, suggesting a limited impact on her overall ownership position.