AST SpaceMobile president withholds 22K shares for taxes

AST SpaceMobile, Inc. (ASTS) reported that President Scott Wisniewski had two Form 4 transactions coded "F", both described as payments of tax liability by withholding shares rather than open-market sales.

Rhea-AI Filing Summary

AST SpaceMobile, Inc. (ASTS) reported that President Scott Wisniewski had two Form 4 transactions coded "F", both described as payments of tax liability by withholding shares rather than open-market sales. On 2026-08-15, 9,838 and 12,297 shares of Class A Common Stock were withheld at $70.98 per share in connection with the vesting of equity awards. These relate to the vesting of 25,000 Restricted Stock Units and 31,250 performance-based stock unit awards, resulting in net vested amounts of 15,162 and 18,953 shares, respectively.

Insider Trade Summary

Tax Withholding: 22,135 shares

Tax Withholding 2 txns

Insider Wisniewski Scott

Role President

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1	9,838	$70.98	$698K
Tax Withholding	Class A Common Stock F2	12,297	$70.98	$873K

Holdings After Transaction: Class A Common Stock — 707,443 shares (Direct)

Footnotes (2)

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 15,162 shares.
2. F2. Represents a payment of tax liability by withholding securities incident to the vesting of performance-based stock unit awards ("PSUs") representing 31,250 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 18,953 shares.

Key Figures

Tax-withholding shares (RSUs): 9,838 shares Tax-withholding shares (PSUs): 12,297 shares Withholding price per share: $70.98 +5 more

8 metrics

Tax-withholding shares (RSUs) 9,838 shares Shares withheld on 2026-08-15 to pay tax liability on RSU vesting

Tax-withholding shares (PSUs) 12,297 shares Shares withheld on 2026-08-15 to pay tax liability on PSU vesting

Withholding price per share $70.98 Price per share used for both tax-withholding transactions

RSUs vested 25,000 shares Restricted Stock Units representing 25,000 Class A shares vested

Net RSU shares vested 15,162 shares Net shares after tax withholding from RSU vesting

PSUs vested 31,250 shares Performance-based stock unit awards representing 31,250 Class A shares vested

Net PSU shares vested 18,953 shares Net shares after tax withholding from PSU vesting

Total shares for tax liability 22,135 shares Total shares delivered or withheld for payment of tax liability (code F)

Key Terms

Restricted Stock Units, performance-based stock unit awards ("PSUs"), Rule 16b-3

3 terms

Restricted Stock Units financial

"Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units"

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.

performance-based stock unit awards ("PSUs") financial

"incident to the vesting of performance-based stock unit awards ("PSUs") representing 31,250 shares"

Rule 16b-3 regulatory

"Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number"

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

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

What insider transactions did ASTS President Scott Wisniewski report on this Form 4?

Scott Wisniewski reported two code F transactions disposing of 9,838 and 12,297 ASTS Class A shares. Both were payments of tax liability through share withholding tied to vesting equity awards, not open-market purchases or sales.

Were Scott Wisniewski’s ASTS Form 4 transactions open-market sales?

No, the transactions were tax-withholding dispositions, not open-market sales. Shares were withheld to pay tax liabilities arising from the vesting of Restricted Stock Units and performance-based stock unit awards on 2026-08-15.

What equity awards vested for ASTS President Scott Wisniewski in this filing?

The filing shows vesting of 25,000 Restricted Stock Units and 31,250 performance-based stock unit awards. After share withholding for taxes, net vested shares were 15,162 from RSUs and 18,953 from PSUs.

At what price were ASTS shares withheld for Scott Wisniewski’s tax payments?

Shares were withheld at $70.98 per share for both reported transactions. This price applies to the 9,838 and 12,297 Class A Common Stock shares used to satisfy tax liabilities from vesting awards.

How many ASTS shares were used to cover Scott Wisniewski’s tax liabilities?

A total of 22,135 ASTS Class A shares were withheld to cover tax liabilities. This consists of 9,838 shares tied to 25,000 RSUs and 12,297 shares tied to 31,250 performance-based stock unit awards.

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

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Accepted by SEC EDGAR 08/18/2026 - 06:00 PM EDT 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^*

Wisniewski Scott

(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)
	President

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		9,838(1)	D	$70.98	719,740	D
Class A Common Stock	08/15/2026		F		12,297(2)	D	$70.98	707,443	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 15,162 shares.

2. Represents a payment of tax liability by withholding securities incident to the vesting of performance-based stock unit awards ("PSUs") representing 31,250 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 18,953 shares.

	/s/ Scott Wisniewski	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)