NextNav officer plans sale of 849 common shares

An officer of NEXTNAV INC. filed Form 144 for a proposed sale of 849 common shares, with prior 10b5-1 sales disclosed from recent months.

Rhea-AI Filing Summary

NEXTNAV INC. (NN) received a Form 144 notice from officer Susan Insley covering a proposed sale of 849 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services. The filing cites an estimated aggregate market value of $13,193.46 for these shares as of September 15, 2026.

The notice also lists prior 10b5-1 sales over the past three months totaling 3,219 shares of common stock.

Key Figures

Shares proposed for sale: 849 shares Estimated aggregate market value: $13,193.46 10b5-1 sale on June 24, 2026: 2,370 shares; $40,601.89 +2 more

5 metrics

Shares proposed for sale 849 shares Common stock covered by the Form 144 notice

Estimated aggregate market value $13,193.46 Value associated with the 849 shares as of September 15, 2026

10b5-1 sale on June 24, 2026 2,370 shares; $40,601.89 Prior 10b5-1 sale of NextNav common stock in the last three months

10b5-1 sale on June 16, 2026 849 shares; $16,436.64 Earlier 10b5-1 sale of NextNav common stock in the last three months

Acquisition date of RSUs September 14, 2026 Date restricted stock units underlying the Form 144 securities were acquired

Key Terms

Form 144, Rule 144, restricted stock units, 10b5-1 sales

4 terms

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock units financial

"Restricted Stock Units | Issuer | | | 849 | 09/14/2026"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

10b5-1 sales regulatory

"10b5-1 Sales for SUSAN INSLEY 11911 Freedom Dr."

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

FAQ

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

What does the Form 144 filing disclose for NEXTNAV INC. (NN)?

The Form 144 filing discloses that officer Susan Insley has notified of a proposed sale of 849 shares of NextNav common stock, with an estimated aggregate market value of $13,193.46, using Morgan Stanley Smith Barney LLC Executive Financial Services.

How many NEXTNAV INC. (NN) shares are proposed to be sold in this Form 144?

The notice covers a proposed sale of 849 shares of NextNav common stock. These shares are associated with restricted stock units and are listed with an estimated aggregate market value of $13,193.46 as of September 15, 2026.

What recent 10b5-1 sales related to NEXTNAV INC. (NN) are reported?

The filing lists 10b5-1 sales for Susan Insley of 2,370 shares of common stock for $40,601.89 on June 24, 2026, and 849 shares for $16,436.64 on June 16, 2026.

Who is the broker listed for the planned NEXTNAV INC. (NN) share sale?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, for the proposed sale of 849 shares of NextNav common stock.

What type of securities are involved in the NEXTNAV INC. (NN) Form 144?

The Form 144 relates to NextNav common stock tied to restricted stock units. The securities to be sold section identifies common stock acquired from restricted stock units, with 849 shares planned for potential sale.

When were the securities for the NEXTNAV INC. (NN) Form 144 acquired?

The securities underlying this Form 144 were acquired on September 14, 2026 and are described as restricted stock units issued by NextNav as the issuer.

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

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Available on EDGAR 09/15/2026 - 04:44 PM Accepted by SEC EDGAR 09/15/2026 - 04:43 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002060247
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	NextNav Inc.
SEC File Number	001-40985
Address of Issuer	11911 Freedom Dr., Ste. 200 Reston VIRGINIA 20190
Phone	8007750982
Name of Person for Whose Account the Securities are To Be Sold	SUSAN INSLEY
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	849	13193.46	168809910	09/15/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/14/2026	Restricted Stock Units	Issuer			849	09/14/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for SUSAN INSLEY 11911 Freedom Dr., Ste. 200 Reston VA 20190	Common	06/24/2026	2370	40601.89
10b5-1 Sales for SUSAN INSLEY 11911 Freedom Dr., Ste. 200 Reston VA 20190	Common	06/16/2026	849	16436.64

144: Remarks and Signature

Remarks
Date of Notice	09/15/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/19/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Susan Insley
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)