NextNav holder plans 2,831-share stock sale

A holder associated with NEXTNAV INC. filed a Rule 144 notice to sell 2,831 shares and disclosed earlier 10b5-1 sales of 69,853 shares.

Rhea-AI Filing Summary

NEXTNAV INC. (NN) received a Rule 144 notice that Mariam Sorond plans to sell 2,831 shares of common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $42,238.52, with a proposed sale date of September 16, 2026 on NASDAQ.

The shares to be sold are tied to restricted stock units from the issuer dated September 14, 2026. The notice also reports prior Rule 10b5-1 sales over the past three months of 69,853 shares of common stock for aggregate proceeds of $1,068,869.65 on September 1, 2026.

Key Figures

Planned shares to be sold: 2,831 shares Aggregate market value of planned sale: $42,238.52 Planned sale date: September 16, 2026 +3 more

6 metrics

Planned shares to be sold 2,831 shares Common stock under Rule 144, proposed sale date September 16, 2026

Aggregate market value of planned sale $42,238.52 Value of 2,831 shares of common stock in the planned Rule 144 sale

Planned sale date September 16, 2026 Proposed date for Rule 144 sale of 2,831 shares on NASDAQ

Shares sold in prior 3 months 69,853 shares Rule 10b5-1 sales reported for September 1, 2026

Aggregate proceeds from prior 3‑month sales $1,068,869.65 Value of 69,853 common shares sold on September 1, 2026

RSU date September 14, 2026 Date associated with restricted stock units underlying the planned sale

Key Terms

Rule 144, Restricted Stock Units, Rule 10b5-1, Form 144

4 terms

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

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

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.

Rule 10b5-1 regulatory

"10b5-1 Sales for MARIAM SOROND 11911 Freedom Dr."

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Form 144 regulatory

"144: Securities Sold During The Past 3 Months"

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.

FAQ

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

What does this Form 144 filing mean for NEXTNAV INC. (NN)?

The filing reports that Mariam Sorond intends to sell 2,831 shares of NEXTNAV INC. common stock under Rule 144, and discloses prior sales of 69,853 shares made on September 1, 2026 under a Rule 10b5-1 plan.

How many NN shares are planned to be sold under this Rule 144 notice?

The notice covers a proposed sale of 2,831 shares of NEXTNAV INC. common stock, with an aggregate market value of $42,238.52, and a proposed sale date of September 16, 2026 on NASDAQ.

What prior sales of NN stock are disclosed in this Form 144?

The filing lists prior Rule 10b5-1 sales during the past three months: 69,853 shares of NEXTNAV INC. common stock sold on September 1, 2026 for aggregate proceeds of $1,068,869.65.

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

The securities involved are common stock of NEXTNAV INC., related to restricted stock units from the issuer dated September 14, 2026, and previously sold shares under a Rule 10b5-1 trading arrangement.

Who is the broker handling the planned NN share sale in this filing?

The planned sale of NEXTNAV INC. common stock is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, as stated in the Form 144 securities information section.

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

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Available on EDGAR 09/16/2026 - 04:33 PM Accepted by SEC EDGAR 09/16/2026 - 04:32 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	0001998558
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	MARIAM SOROND
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	Director
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	2831	42238.52	168809910	09/16/2026	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			2831	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 MARIAM SOROND 11911 Freedom Dr., Ste. 200 Reston VA 20190	Common	09/01/2026	69853	1068869.65

144: Remarks and Signature

Remarks
Date of Notice	09/16/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/22/2025
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/ Mariam Sorond
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)