NextNav COO sells 849 shares at $15.29 each

NEXTNAV’s chief operating officer executed a small Rule 10b5-1 planned sale primarily to cover tax withholding on vested equity awards.

Rhea-AI Filing Summary

NEXTNAV INC. (NN) reported that Chief Operating Officer Susan Brasse Insley sold 849 shares of common stock on September 15, 2026 in an open-market transaction at a weighted average price of $15.29 per share. Following this sale, she held 166,205 shares of NEXTNAV common stock.

The transaction was effected under a Rule 10b5-1 sales plan adopted on August 19, 2025, and the filing states that the proceeds are intended to satisfy tax withholding obligations related to the vesting of underlying equity awards.

Insider Trade Summary 10b5-1

Net Seller: 849 shares

Net Sell 1 txn

Insider Insley Susan Brasse

Role Chief Operating Officer

Sold 849 shs ($13K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	849	$15.29	$13K

Holdings After Transaction: Common Stock — 166,205 shares (Direct)

Footnotes (2)

1. F1. 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. F2. The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.29 to $15.29 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: 849 shares Weighted average sale price: $15.29 per share Shares owned after transaction: 166,205 shares +1 more

4 metrics

Shares sold 849 shares Common stock sale on September 15, 2026 by the COO

Weighted average sale price $15.29 per share Open-market sale of NEXTNAV common stock

Shares owned after transaction 166,205 shares Direct holdings of the COO following the September 15, 2026 sale

Rule 10b5-1 plan adoption date August 19, 2025 Trading plan under which the reported sale was effected

Key Terms

Rule 10b5-1 sales plan, weighted average price, tax withholding obligations, 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"

equity awards financial

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

Equity awards are payments to employees or directors made in the form of company stock or rights to buy stock later, serving as a way to share ownership rather than cash. For investors, they matter because they align staff incentives with company performance, can increase the number of shares outstanding over time (which can reduce each share’s claim on profits), and create compensation costs that affect reported earnings.

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 disclosed that Chief Operating Officer Susan Brasse Insley sold 849 shares of common stock on September 15, 2026 at a weighted average price of $15.29 per share in an open-market transaction.

How many NEXTNAV (NN) shares does the COO hold after the reported sale?

After the sale, Chief Operating Officer Susan Brasse Insley held 166,205 shares of NEXTNAV INC. common stock, as reported in the Form 4 filing.

Was the NEXTNAV (NN) insider sale made under a Rule 10b5-1 plan?

Yes. The filing states the sale was effected under a Rule 10b5-1 sales plan adopted by the reporting person on August 19, 2025, indicating it was pre-arranged under that trading plan.

What is the stated purpose of the proceeds from the NEXTNAV (NN) insider sale?

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

What price range applied to the NEXTNAV (NN) shares sold in this transaction?

The Form 4 notes that the reported $15.29 price is a weighted average. The shares were sold in multiple transactions at prices ranging from $15.29 to $15.29 per share, inclusive.

Who is the insider involved in this NEXTNAV (NN) Form 4 filing and what is their role?

The reporting person is Susan Brasse Insley, who is identified in the filing as the Chief Operating Officer of NEXTNAV INC.

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

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Available on EDGAR 09/16/2026 - 08:02 PM Accepted by SEC EDGAR 09/16/2026 - 08:02 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^*

Insley Susan Brasse

(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)
	Chief Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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	09/15/2026		S(1)		849	D	$15.29(2)	166,205	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 $15.29 to $15.29 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)