X0206 3 2026-02-10 0 0002091176 Idea Acquisition Corp. IACO 0002090849 Idea Tender LLC C/O IDEA ACQUISITION CORP. 1010 WILSHIRE BOULEVARD, SUITE 1604 LOS ANGELES CA 90017 1 0 1 0 0001374849 Harries-Jones Trevor C/O IDEA ACQUISITION CORP. 1010 WILSHIRE BOULEVARD, SUITE 1604 LOS ANGELES CA 90017 1 1 0 0 Chief Executive Officer 0002103988 Shea Ryan C/O IDEA ACQUISITION CORP. 1010 WILSHIRE BOULEVARD, SUITE 1604 LOS ANGELES CA 90017 1 1 0 0 Chief Operating Officer Class B Ordinary Shares Class A Ordinary Shares 10062500 D The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-291010) (the "Registration Statement") and have no expiration date. The Class B ordinary shares beneficially owned by the Reporting Persons include up to 1,312,500 Class B ordinary shares subject to forfeiture to the Issuer depending on the extent to which the underwriters' over-allotment option is exercised in connection with the Issuer's initial public offering of units, as described in the Registration Statement. Idea Tender LLC is the record holder of the securities reported herein. Trevor Harries-Jones and Ryan Shea are the managing members of Idea Tender LLC and have voting and investment discretion with respect to the securities held of record by Idea Tender LLC. See Exhibit 99.1 - Joint Filer Information, which is incorporated herein by reference and describes in further detail the relationships of the Reporting Persons to the Issuer. See Exhibits 24.1, 24.2 and 24.3 - Powers of Attorney. /s/ Jordan Leon, Attorney-in-Fact for Idea Tender LLC 2026-02-10 /s/ Jordan Leon, Attorney-in-Fact for Trevor Harries-Jones 2026-02-10 /s/ Jordan Leon, Attorney-in-Fact for Ryan Shea 2026-02-10