Company: TBMC
Filing Date: 2025-08-04
Form Type: 425
Source: 0001213900-25-071426
Chunk: 1

Company: Trailblazer Merger Corp I
Filing Date: 2025-08-04
Form: 425
Chunk 1
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 indicate by check
mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting
standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Material Definitive Agreement.

On July 29, 2025, Trailblazer Merger Corporation I (the “Company”)
entered into a Second Amended and Restated Promissory Note (the “Note”) with Trailblazer Sponsor Group, LLC, pursuant to which
(i) the maturity date of the Note was amended to be the later of September 15, 2025 or the closing of the Company’s initial business
combination and (ii) the outstanding principal balance of the Note will be converted into preferred stock of the Corporation at the closing
of the initial business Combination.

A copy of the Amendment is attached as Exhibit 10.1 to this Current
Report on Form 8-K and is incorporated herein by reference. The disclosures set forth in this Item 1.01 are intended to be summaries only
and are qualified in their entirety by reference to the Amendment.

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The disclosure contained in Item 1.01 of this Current Report on Form
8-K is incorporated by reference in this Item 2.03.

Item 8.01 Other Events

Extension of Business Combination Period to August 31, 2025

As previously disclosed, on September 26, 2024, the Company held an
annual meeting of stockholders to consider, among other things, proposals to amend the Company’s amended and restated certificate
of incorporation in order to extend the time the Company has to complete its initial business combination from September 30, 2024 to September
30, 2025, or such earlier date as determined by the Company’s board of directors (the “Board”), in its sole discretion,
and to allow the Company, without another stockholder vote, to elect to extend the termination date by one additional month each, for
a total of twelve additional months, until September 30, 2025, unless the closing of the Company’s initial business combination
shall have occurred prior thereto.

The Company has funded
the extension that had previously been approved by the Board by depositing $83,286.56 into the Trust Account, thereby extending the time
available