X0206 3 2025-09-09 0 0002075310 Trailblazer Acquisition Corp. BLZR 0002075042 TRAILBLAZER SPONSOR LLC 152 WEST 57TH STREET, 27TH FLOOR NEW YORK NY 10019 0 0 1 0 0001162095 SEMLER ERIC 152 WEST 57TH STREET 27TH FLOOR NEW YORK NY 10019 0 1 1 0 Chief Executive Officer Class B Ordinary Shares Class A Ordinary Shares 6810000 D As described in the registration statement on Form S-1 (File No. 333-288651) of Trailblazer Acquisition Corp. (the "Issuer") under the heading "Description of Securities--Founder Shares," the shares of Class B ordinary shares will automatically convert into shares of Class A ordinary shares at the time of the Issuer's initial business combination, or at any time prior to the Issuer's initial business combination, at the option of the holder, on a one-for-one basis, subject to certain adjustments. The Class B ordinary shares have no expiration date. These shares represent the Class B ordinary shares held by Trailblazer Sponsor LLC (the "Sponsor") acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor. The Class B ordinary shares include up to 900,000 shares that are subject to forfeiture in the event the underwriters of the Issuer's initial public offering do not exercise in full their over-allotment option as described in the Issuer's registration statement. Trailblazer Sponsor LLC, our sponsor, is the record holder of such shares. The sole managing member of our sponsor is Mr. Eric Semler. Mr. Semler is also the Chief Executive Officer and a director of the Issuer and holds voting and investment discretion with respect to the ordinary shares held of record by the sponsor. As such, Mr. Semler may be deemed to have beneficial ownership of the securities held of record by the Sponsor. Mr. Semler disclaims any beneficial ownership except to the extent of his pecuniary interest therein. /s/ Eric Semler as Sole Managing Member of Trailblazer Sponsor LLC 2025-09-09 /s/ Eric Semler 2025-09-09