AST SpaceMobile (NASDAQ: ASTS) COO sees 12,767 shares withheld for RSU taxes

Rhea-AI Filing Summary

AST SpaceMobile, Inc. (ASTS) reported that Chief Operating Officer Shanti B. Gupta had 12,767 shares of Class A Common Stock withheld on August 15, 2026 to cover tax liability related to the vesting of Restricted Stock Units. The footnote states these RSUs represented 25,000 shares, resulting in a net vesting of 12,233 shares. After this tax-withholding transaction, Gupta directly held 399,980 shares of Class A Common Stock.

Insider Trade Summary

Net Seller: 12,767 shares

Net Sell 1 txn

Insider Gupta Shanti B.

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1	12,767	$70.98	$906K

Holdings After Transaction: Class A Common Stock — 399,980 shares (Direct)

Footnotes (1)

1. F1. Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 25,000 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 12,233 shares.

Key Figures

Shares withheld for taxes: 12,767 shares Per-share reference price: $70.98 per share RSU shares vesting: 25,000 shares +2 more

5 metrics

Shares withheld for taxes 12,767 shares Class A Common Stock withheld on August 15, 2026 for tax liability

Per-share reference price $70.98 per share Value used for the tax-withholding disposition of 12,767 shares

RSU shares vesting 25,000 shares Restricted Stock Units representing 25,000 shares of Class A Common Stock vested

Net vested shares 12,233 shares Net number of shares vested after tax withholding from RSUs

Shares held after transaction 399,980 shares Directly owned Class A Common Stock after August 15, 2026 transaction

Key Terms

Restricted Stock Units, withholding securities, Rule 16b-3

3 terms

Restricted Stock Units financial

"vesting of Restricted Stock Units representing 25,000 shares of Class A Common Stock"

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.

withholding securities financial

"payment of tax liability by withholding securities incident to the vesting"

Rule 16b-3 regulatory

"Restricted Stock Units representing 25,000 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.

FAQ

What insider transaction did AST SpaceMobile (ASTS) report for Shanti B. Gupta?

AST SpaceMobile reported that COO Shanti B. Gupta had 12,767 ASTS shares withheld on August 15, 2026 to satisfy tax liability from RSU vesting, leaving her with 399,980 shares of Class A Common Stock held directly.

Was the ASTS insider transaction a market sale or tax withholding?

The reported ASTS insider transaction was tax withholding, not an open-market sale. 12,767 shares were withheld to pay taxes incident to RSU vesting, according to the Form 4 footnote and transaction code F description.

How many ASTS shares vested for Shanti B. Gupta in this Form 4 filing?

The Form 4 footnote states that Restricted Stock Units representing 25,000 ASTS shares vested. After withholding 12,767 shares for taxes, Gupta received a net vested amount of 12,233 shares of Class A Common Stock.

How many ASTS shares does Shanti B. Gupta hold after the reported transaction?

Following the August 15, 2026 tax-withholding transaction, Shanti B. Gupta directly holds 399,980 shares of AST SpaceMobile Class A Common Stock, as disclosed in the Form 4’s post-transaction ownership field.

What does transaction code F mean in the ASTS Form 4 for Shanti B. Gupta?

In this ASTS Form 4, transaction code F indicates a payment of tax liability by withholding securities. The filing specifies that 12,767 shares were withheld to cover taxes on the vesting of 25,000 RSU-based shares.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/18/2026 - 06:00 PM Accepted by SEC EDGAR 08/18/2026 - 06:00 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).

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)
08/15/2026

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
Class A Common Stock	08/15/2026		F		12,767(1)	D	$70.98	399,980	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 25,000 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 12,233 shares.

	/s/ Shanti Gupta	08/18/2026
	** 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)