Restricted stock grant boosts NextNav (NN) director Neil Subin’s holdings

Rhea-AI Filing Summary

SUBIN NEIL S reported acquisition or exercise transactions in this Form 4 filing.

NextNav Inc. director Neil S. Subin received a grant of 7,550 shares of Common Stock as restricted shares, at a stated price of $0.00 per share. These restricted shares vest 100% on May 1, 2027, subject to his continued service through that date.

Following this grant, Subin holds 168,892 shares of Common Stock directly. An additional 2,515,213 shares are reported as indirectly held by Milfam Investments LLC; Subin is associated with this entity but disclaims beneficial ownership except for any pecuniary interest.

Insights

Equity compensation analyst

Routine restricted stock grant increases director’s equity stake.

The filing shows Neil S. Subin, a director of NextNav Inc., receiving 7,550 restricted shares at $0.00 per share as compensation, not as an open-market purchase. The shares vest in full on May 1, 2027, contingent on continued service.

After this award, Subin owns 168,892 shares directly. A separate 2,515,213 shares are held by Milfam Investments LLC, where footnotes state he disclaims beneficial ownership beyond any pecuniary interest. This points to a primarily administrative update with no buy or sell signal.

There are no derivative positions reported and no sales, so the net effect is an incremental increase in the director’s direct equity exposure through standard board compensation, with the long vesting schedule aligning incentives over several years.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider SUBIN NEIL S

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	7,550	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 168,892 shares (Direct, null); Common Stock — 2,515,213 shares (Indirect, By MILFAM Investments LLC)

Footnotes (1)

1. Represents a grant of restricted shares (the "Restricted Shares"). Subject to the Reporting Person's continued service through the applicable vesting date, 100% of the Restricted Shares shall vest on May 1, 2027. Neil Subin is the Manager of MILFAM LLC. MILFAM LLC is the manager of Milfam Investments LLC. Mr. Subin disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

Key Figures

Restricted shares granted: 7,550 shares Grant price: $0.00 per share Direct holdings after grant: 168,892 shares +2 more

5 metrics

Restricted shares granted 7,550 shares Common Stock grant to director Neil S. Subin

Grant price $0.00 per share Restricted share award on May 21, 2026

Direct holdings after grant 168,892 shares Neil S. Subin direct ownership following transaction

Indirect holdings via Milfam Investments LLC 2,515,213 shares Reported as indirectly held; Subin disclaims full beneficial ownership

Vesting date May 1, 2027 100% of restricted shares vest if service continues

Key Terms

restricted shares, vest, beneficial ownership, pecuniary interest, +1 more

5 terms

restricted shares financial

"Represents a grant of restricted shares (the "Restricted Shares")."

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

vest financial

"100% of the Restricted Shares shall vest on May 1, 2027."

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

beneficial ownership financial

"Mr. Subin disclaims any beneficial ownership of the reported securities"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

pecuniary interest financial

"other than to the extent of any pecuniary interest he may have therein"

indirect ownership financial

"total_shares_following_transaction: 2515213.0000, ownership_type: indirect"

Form 4 Insider Transactions: What Each Field Means →

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).

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^*

SUBIN NEIL S

(Last) (First) (Middle)

11911 FREEDOM DR.

STE. 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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

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	05/21/2026		A		7,550(1)	A	$0	168,892	D
Common Stock								2,515,213	I	By MILFAM Investments LLC(2)

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. Represents a grant of restricted shares (the "Restricted Shares"). Subject to the Reporting Person's continued service through the applicable vesting date, 100% of the Restricted Shares shall vest on May 1, 2027.

2. Neil Subin is the Manager of MILFAM LLC. MILFAM LLC is the manager of Milfam Investments LLC. Mr. Subin disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

	/s/ James S. Black by power of attorney	05/26/2026
	** 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 did NextNav (NN) director Neil S. Subin report in this Form 4?

Neil S. Subin reported receiving a grant of 7,550 restricted shares of NextNav common stock. The award is compensation-based, carries a zero dollar grant price, and increases his directly held shares to 168,892, with additional indirect holdings reported through Milfam Investments LLC.

How many NextNav (NN) shares did Neil S. Subin acquire and at what price?

Neil S. Subin acquired 7,550 restricted shares of NextNav common stock at a stated price of $0.00 per share. This represents an equity compensation grant rather than an open-market purchase, adding to his existing direct ownership position reported in the filing.

When do Neil S. Subin’s restricted NextNav (NN) shares vest?

All 7,550 restricted shares granted to Neil S. Subin vest on May 1, 2027. Vesting is contingent on his continued service with NextNav through that date, aligning the award with longer-term board service and company performance over the vesting period.

What are Neil S. Subin’s total direct and indirect NextNav (NN) holdings after this grant?

After the grant, Neil S. Subin directly holds 168,892 shares of NextNav common stock. The filing also reports 2,515,213 shares held indirectly by Milfam Investments LLC, with Subin disclaiming beneficial ownership except for any pecuniary interest in those indirectly held shares.

Does this NextNav (NN) Form 4 show any insider share sales?

The Form 4 does not report any sales of NextNav shares by Neil S. Subin. It records an acquisition of 7,550 restricted shares as a grant and lists indirect holdings through Milfam Investments LLC, but no open-market or other disposition transactions are shown.

Who holds the indirectly owned NextNav (NN) shares related to Neil S. Subin?

Indirect holdings are reported as owned by Milfam Investments LLC, managed by Milfam LLC, where Neil Subin is Manager. The filing states he disclaims beneficial ownership of these shares except for any pecuniary interest, clarifying his economic but limited ownership connection.