X0609 4 2026-04-14 1 0001780312 AST SpaceMobile, Inc. ASTS 0001760624 Mikitani Hiroshi true 1-14-1 TAMAGAWA SETAGAYA-KU TOKYO M0 158-0094 JAPAN 0 0 1 0 0001294591 Rakuten Group, Inc. true 1-14-1 TAMAGAWA SETAGAYA-KU TOKYO M0 158-0094 JAPAN 0 0 1 0 0002035591 Rakuten Mobile, Inc. true 1-14-1 TAMAGAWA SETAGAYA-KU TOKYO M0 158-0094 JAPAN 0 0 1 0 0 Class A Common Stock 2026-04-14 4 S 0 1690000 91.42 D 29330155 I See footnote Class A Common Stock 2026-04-15 4 S 0 1350000 86.22 D 27980155 I See footnote The shares of Class A Common Stock of the Issuer (the "Common Stock") set forth herein are held of record by Rakuten Mobile, Inc., a wholly-owned subsidiary of Rakuten Group, Inc. Hiroshi Mikitani is the founder, Chairman and Chief Executive Officer of Rakuten Group, Inc. and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile, Inc. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani and Rakuten Group, Inc. may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile, Inc. Mr. Mikitani and Rakuten Group, Inc. hereby disclaim beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.50 to $103.96 per share, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote 2 to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.04 to $88.71 per share, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote 2 to this Form 4. Hiroshi Mikitani /s/Hiroshi Mikitani 2026-04-16 Rakuten Group, Inc. /s/Kentaro Hyakuno, Representative Director, Group Senior Executive Vice President 2026-04-16 Rakuten Mobile, Inc. /s/Atsushi Maeda, Director, Executive Vice President and CFO 2026-04-16