- 09 Dec 2025 Form 4 Insider Report for AST SpaceMobile, Inc. (ASTS)

Role: Member of 10% owner group
Signature: /s/ Rodney M. Smith, By: Executive Vice President, Chief Financial Officer and Treasurer, American Tower Corporation
Issuer symbol: ASTS
Transactions as of: 09 Dec 2025
Net transactions value: -$159,631,315
Form type: 4
Filing time: 11 Dec 2025, 16:15:03 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
AMERICAN TOWER CORP /MA/	Member of 10% owner group	222 BERKELEY ST., BOSTON	/s/ Rodney M. Smith, By: Executive Vice President, Chief Financial Officer and Treasurer, American Tower Corporation	11 Dec 2025	0001053507

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ASTS	Class A Common Stock	Sale	$159,631,315	-2,288,621	-92%	$69.75	211,379	09 Dec 2025	See Explanation of Responses	F1
holding	ASTS	Class B Common Stock						2,170,657	09 Dec 2025	See Explanation of Responses	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	ASTS	Common Units						2,170,657	09 Dec 2025	Class A Common Stock	2,170,657		See Explanation of Responses	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares of Class A Common Stock ("Class A Shares") of AST SpaceMobile, Inc. (the "Issuer") held by ATC TRS II LLC ("TRS II"), a wholly owned subsidiary of American Tower Corporation (together with TRS II, the "Reporting Persons"), sold pursuant to a block trade with Barclays Capital Inc.
F2	TRS II directly holds 2,170,657 common units ("Common Units") of AST & Science LLC ("AST LLC") and an equal number of Class B Common Stock of the Issuer ("Class B Shares").
F3	The Common Units, together with an equal number of Class B Shares, may be redeemed by TRS II at any time for Class A Shares on a one-to-one basis. The Common Units do not expire.

Remarks:

The Reporting Person may be deemed to be a member of a group (for purposes of Rule 13d-3 under the Exchange Act) with the other stockholders of the Issuer party to the Stockholders' Agreement, dated April 6, 2021, filed as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the Securities and Exchange Commission (the "SEC") on April 12, 2021, as amended and restated by the Amended and Restated Stockholders' Agreement, dated June 5, 2024, filed as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the SEC on June 7, 2024, and the First Amendment to Amended and Restated Stockholders' Agreement, dated as of February 5, 2025, filed as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the SEC on February 7, 2025. The Reporting Person disclaims beneficial ownership of any securities reported by any person except to the extent of its pecuniary interest therein.