AST SpaceMobile (ASTS) CEO withholds 22,490 shares for RSU tax payment

Rhea-AI Filing Summary

AST SpaceMobile, Inc. CEO Abel Avellan reported a routine tax-related share withholding tied to equity compensation. On March 31, 2026, 22,490 shares of Class A common stock were withheld at $82.87 per share to cover tax liability from vested Restricted Stock Units.

The footnotes state this withholding related to 61,458 RSUs, resulting in a net vesting of 38,968 Class A shares to Avellan, and that he did not sell any shares on the market. After the transaction, he directly owned 78,574,963 Class A shares and held AST Common Units exchangeable one-for-one into 78,163,078 additional Class A shares, indicating a very large ongoing equity position.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Avellan Abel Antonio

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock	22,490	$82.87	$1.86M
holding	Common Units	--	--	--
holding	Class C Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 78,574,963 shares (Direct); Common Units — 78,163,078 shares (Direct); Class C Common Stock — 78,163,078 shares (Direct)

Footnotes (1)

1. Represents a payment of tax liability via forfeiture by withholding securities incident to the vesting of Restricted Stock Units representing 61,458 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 38,968 shares. The Reporting Person did not sell any shares. The securities reported in this line item represent AST Common Units. At any time on or after April 6, 2022, these AST Common Units may be redeemed by the Reporting Person in exchange for shares of Class A common stock of the Issuer on a one-to-one basis. When a holder of Class C common stock of the Issuer exchanges AST Common Units for shares of Class A common stock of the Issuer, a number of shares of Class C common stock of the Issuer equal to the number of such AST Common Units will be immediately retired by the Issuer and will no longer be outstanding. The AST Common Units do not expire. In connection with the closing of the business combination between New Providence Acquisition Corp. and AST & Science, LLC ("AST") on April 6, 2021, each existing common unit previously issued by AST was reclassified and reissued by AST into new Common Units on a 1-to-14.50149869 basis. In addition, each equityholder of Common Units received an equivalent number of Class B Common Stock or Class C Common Stock of the Issuer, as applicable.

Key Figures

Tax-withheld shares: 22,490 shares Withholding price: $82.87 per share Vested RSUs: 61,458 shares +3 more

6 metrics

Tax-withheld shares 22,490 shares Class A common stock withheld on March 31, 2026

Withholding price $82.87 per share Value used for tax-liability share forfeiture

Vested RSUs 61,458 shares Restricted Stock Units vesting into Class A common stock

Net shares vested 38,968 shares RSU shares delivered after 22,490-share tax withholding

Class A holdings 78,574,963 shares Direct Class A common stock owned after transaction

Exchangeable units 78,163,078 units AST Common Units redeemable one-for-one into Class A shares

Key Terms

Restricted Stock Units, Rule 16b-3, AST Common Units, Class C common stock, +1 more

5 terms

Restricted Stock Units financial

"vesting of Restricted Stock Units representing 61,458 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.

Rule 16b-3 regulatory

"Restricted Stock Units representing 61,458 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.

AST Common Units financial

"The securities reported in this line item represent AST Common Units."

Class C common stock financial

"a number of shares of Class C common stock of the Issuer equal to the number of such AST Common Units will be immediately retired"

A class C common stock is a type of company share that usually represents ownership but often carries limited or no voting power compared with other share classes. For investors, that matters because it can affect influence over company decisions and sometimes the stock’s price or dividend priority — think of it as owning a ticket to the same event but in a section with less say in how the event is run.

tax liability financial

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

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^*

Avellan Abel Antonio

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026

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 C Common Stock								78,163,078	D
Class A Common Stock	03/31/2026		F		22,490(1)	D	$82.87	78,574,963	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
Common Units	(2)(3)							(2)(3)	(2)(3)	Class A Common Stock	78,163,078		78,163,078	D

Explanation of Responses:

1. Represents a payment of tax liability via forfeiture by withholding securities incident to the vesting of Restricted Stock Units representing 61,458 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 38,968 shares. The Reporting Person did not sell any shares.

2. The securities reported in this line item represent AST Common Units. At any time on or after April 6, 2022, these AST Common Units may be redeemed by the Reporting Person in exchange for shares of Class A common stock of the Issuer on a one-to-one basis. When a holder of Class C common stock of the Issuer exchanges AST Common Units for shares of Class A common stock of the Issuer, a number of shares of Class C common stock of the Issuer equal to the number of such AST Common Units will be immediately retired by the Issuer and will no longer be outstanding. The AST Common Units do not expire.

3. In connection with the closing of the business combination between New Providence Acquisition Corp. and AST & Science, LLC ("AST") on April 6, 2021, each existing common unit previously issued by AST was reclassified and reissued by AST into new Common Units on a 1-to-14.50149869 basis. In addition, each equityholder of Common Units received an equivalent number of Class B Common Stock or Class C Common Stock of the Issuer, as applicable.

	/s/ Abel Avellan	04/02/2026
	** 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 AST SpaceMobile (ASTS) CEO Abel Avellan report?

Avellan reported a tax-withholding disposition of 22,490 Class A shares. The shares were forfeited to cover tax on vesting of 61,458 RSUs, resulting in 38,968 net shares vested, with no open-market sale involved.

Did the ASTS CEO sell any AST SpaceMobile shares in this Form 4 filing?

No, the filing states the CEO did not sell any shares. Instead, 22,490 shares were withheld to pay tax due on vesting of 61,458 Restricted Stock Units, leaving 38,968 net shares delivered to him.

How many AST SpaceMobile (ASTS) shares does the CEO hold after this tax withholding?

Following the transaction, Avellan directly owned 78,574,963 Class A shares. He also held AST Common Units exchangeable one-for-one into 78,163,078 Class A shares, reflecting a substantial continuing ownership stake in the company.

What are AST Common Units referenced in the ASTS Form 4 footnotes?

AST Common Units are equity interests that can be redeemed for Class A common stock on a one-to-one basis. When units are exchanged, an equal number of Class C common shares are retired, and the units themselves do not expire, according to the footnotes.

How many Restricted Stock Units vested for the ASTS CEO in this event?

The footnotes state that 61,458 Restricted Stock Units vested into Class A common stock. To cover related tax liability, 22,490 shares were withheld, resulting in a net delivery of 38,968 shares of Class A stock to the CEO.

What price per share was used for the ASTS CEO tax-withholding shares?

The 22,490 withheld Class A shares were valued at $82.87 per share. This per-share value is used to determine the amount of stock required to satisfy the CEO’s tax obligations on the vesting RSUs in this transaction.