AST SpaceMobile (NASDAQ: ASTS) COO uses RSU share withholding to cover tax liability

Rhea-AI Filing Summary

AST SpaceMobile, Inc. Chief Operating Officer Shanti B. Gupta reported a tax-related share disposition linked to restricted stock unit (RSU) vesting. A total of 41,666 RSUs vested, and 21,275 shares of Class A Common Stock were withheld at $113.41 per share to cover tax liabilities. This left a net 20,391 shares from the vesting, which Gupta retained. Following the withholding, Gupta directly holds 412,747 shares of Class A Common Stock, indicating this was a routine compensation and tax-settlement event rather than an open-market trade.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Gupta Shanti B.

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock	21,275	$113.41	$2.41M

Holdings After Transaction: Class A Common Stock — 412,747 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for taxes: 21,275 shares Shares vested as RSUs: 41,666 shares Net shares received from vesting: 20,391 shares +2 more

5 metrics

Shares withheld for taxes 21,275 shares Tax-withholding disposition on RSU vesting

Shares vested as RSUs 41,666 shares Restricted Stock Units vesting event

Net shares received from vesting 20,391 shares RSU vesting after tax withholding

Post-transaction holdings 412,747 shares Direct Class A Common Stock after transaction

Tax withholding price $113.41 per share Value used for withheld shares

Key Terms

Restricted Stock Units, Class A Common Stock, tax-withholding disposition, Rule 16b-3

4 terms

Restricted Stock Units financial

"Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 41,666 shares"

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.

Class A Common Stock financial

"Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 41,666 shares of Class A Common Stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Rule 16b-3 regulatory

"Restricted Stock Units representing 41,666 shares of Class A Common Stock issued in accordance with Rule 16b-3"

Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.

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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^*

Gupta Shanti B.

(Last) (First) (Middle)

C/O AST SPACEMOBILE, INC., MIDLAND

AIR & SPACE PORT, 2901 ENTERPRISE LANE

(Street)

MIDLAND TEXAS 79706

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AST SpaceMobile, Inc. [ ASTS ]

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)
05/30/2026

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
Class A Common Stock	05/30/2026		F		21,275(1)	D	$113.41	412,747	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. Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 41,666 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 20,391 shares.

	/s/ Shanti Gupta	06/02/2026
	** 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 ASTS executive Shanti B. Gupta report on this Form 4?

Gupta reported a tax-related disposition of shares tied to RSU vesting. 21,275 Class A shares were withheld to cover tax liability when 41,666 restricted stock units vested, resulting in a net 20,391 vested shares retained as equity compensation.

Was Shanti B. Gupta’s ASTS Form 4 transaction an open-market stock sale?

No, the transaction was not an open-market sale. Shares were withheld by the company to satisfy tax obligations from RSU vesting, a common non-market mechanism that adjusts share count without the executive selling shares into the public market.

How many AST SpaceMobile shares were withheld for taxes in Gupta’s Form 4?

The filing shows 21,275 Class A Common Stock shares were withheld. This withholding satisfied tax liability associated with the vesting of 41,666 restricted stock units, leaving the executive with 20,391 net shares from that vesting event.

What is Shanti B. Gupta’s ASTS shareholding after this Form 4 transaction?

After the tax-withholding transaction, Gupta directly holds 412,747 Class A Common Stock shares. This figure reflects post-transaction ownership and shows that the insider maintains a substantial equity position following the RSU vesting and associated tax settlement.

At what price were the ASTS shares valued for Gupta’s tax withholding event?

The tax-withholding disposition used a price of $113.41 per Class A share. This price, disclosed in the Form 4, is applied to the 21,275 withheld shares to determine the value used to satisfy the reported tax liability.