X0508 4 2025-12-09 0001780312 AST SpaceMobile, Inc. ASTS 0001053507 AMERICAN TOWER CORP /MA/ 222 BERKELEY ST. BOSTON MA 02116 false false false true Member of 10% owner group false Class A Common Stock 2025-12-09 4 S false 2288621 69.75 D 211379 I See Explanation of Responses Class B Common Stock 2170657 I See Explanation of Responses Common Units Class A Common Stock 2170657 2170657 I See Explanation of Responses 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. 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"). 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. 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. /s/ Rodney M. Smith, By: Executive Vice President, Chief Financial Officer and Treasurer, American Tower Corporation 2025-12-11