Company: TBMC
Filing Date: 2025-09-17
Form Type: DEFA14A
Source: 0001213900-25-088297
Chunk: 0

Company: Trailblazer Merger Corp I
Filing Date: 2025-09-17
Form: DEFA14A
Chunk 0
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549 __________________________________________ SCHEDULE 14A __________________________________________ Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934

| Filed by the Registrant                    |     | ☒ |
| Filed by a party other than the Registrant |     | ☐ |

Check the appropriate box:

| ☐ |     | Preliminary Proxy Statement                                                     |
| ☐ |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐ |     | Definitive Proxy Statement                                                      |
| ☒ |     | Definitive Additional Materials                                                 |
| ☐ |     | Soliciting Material under §240.14a-12                                           |

Trailblazer Merger Corporation I (Name of Registrant as Specified in Its Charter) _________________________________________________________________
(Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check all boxes that apply):

| ☒ |     | No fee required                                                                                     |
| ☐ |     | Fee paid previously with preliminary materials                                                      |
| ☐ |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |

TRAILBLAZER MERGER CORPORATION I
510 Madison Avenue, Suite 1401
New York, NY 10022 SUPPLEMENT TO PROXY STATEMENT NOTICE OF AN ANNUAL MEETING OF STOCKHOLDERS
OF TRAILBLAZER MERGER CORPORATION I
TO BE HELD ON SEPTEMBER 26, 2025 This proxy statement supplement, dated September 16, 2025 (the “ Supplement ”), supplements the definitive proxy statement (which we refer to as the “ Proxy Statement ”) of the Board of Directors of Trailblazer Merger Corporation I (the “ Company ”) filed with the U.S. Securities and Exchange Commission on September 4, 2025, relating to the annual meeting of stockholders of the Company (the “ Annual Meeting ”). The purpose of this Supplement is to postpone the Annual Meeting to 10:00 a.m. Eastern Time, on September 26, 2025. Except as described in this Supplement, the information disclosed in the Proxy Statement continues to apply. To the extent that information in this Supplement differs from