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

Reporting relationship: Member of 10% owner group
Issuer ticker: ASTS
Reported as of: 09 Dec 2025
Net transaction value: -$159,631,315
SEC form: 4
Accepted by SEC: 11 Dec 2025, 16:15:03 UTC
Source filing: View source filing
Reporting owner signature: /s/ Rodney M. Smith, By: Executive Vice President, Chief Financial Officer and Treasurer, American Tower Corporation

Key filing fact

AMERICAN TOWER CORP /MA/ filed Form 4 for AST SpaceMobile, Inc. (ASTS) on 11 Dec 2025.

Key facts

This page summarizes AMERICAN TOWER CORP /MA/'s Form 4 filing for AST SpaceMobile, Inc. (ASTS).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 11 Dec 2025, 16:15.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: -$159,631,315.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001053507 Primary reporting owner

AMERICAN TOWER CORP /MA/

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ASTS transaction

Class A Common Stock

Sale

Transaction value: $159,631,315
Shares: -2,288,621
Change %: -92%
Price: $69.75
Shares after: 211,379
Date: 09 Dec 2025
Ownership: See Explanation of Responses
Footnotes: F1

ASTS holding

Class B Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,170,657
Date: 09 Dec 2025
Ownership: See Explanation of Responses
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ASTS holding Derivative

Common Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,170,657
Date: 09 Dec 2025
Ownership: See Explanation of Responses
Underlying class: Class A Common Stock
Underlying amount: 2,170,657
Exercise price
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote 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").

Footnote 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.

SEC 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.