X0609 4 2026-05-27 0002007825 Infleqtion, Inc. INFQ 0001240366 SINGER DAVID B false C/O INFLEQTION, INC. 1315 WEST CENTURY DRIVE, SUITE 150 LOUISVILLE CO 80027 1 0 0 0 0 Common Stock 2026-05-27 4 J 0 1551021 0 D 1564321 I See Footnotes Common Stock 2026-05-27 4 J 0 2448979 0 D 2469973 I See Footnotes Common Stock 2026-05-27 4 J 0 349693 0 A 349693 I See Footnotes Common Stock 2026-05-27 4 J 0 83773 0 A 83773 I See Footnote Maverick Advisors Fund, L.P. ("Maverick Advisors Fund") distributed these shares to its limited partners pro rata for no consideration. Maverick Ventures Investment Fund, L.P. ("Maverick Ventures Fund") distributed these shares to its limited partners pro rata for no consideration. Held directly by Maverick Advisors Fund. Maverick Capital Ventures, LLC ("Maverick Ventures") is the general partner of Maverick Advisors Fund. The Reporting Person is a managing partner of Maverick Ventures. Held directly by Maverick Ventures Fund. Maverick Ventures is the general partner of Maverick Ventures Fund. Held directly by Maverick Ventures. Held directly by family estate planning entities controlled by the Reporting Person. Received for no consideration in the pro rata distributions effected by Maverick Advisors Fund and Maverick Ventures Fund. The Reporting Person disclaims, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, beneficial ownership of these securities, except to the extent of his pecuniary interest therein. /s/ David B. Singer 2026-05-28