Company: TBMC
Filing Date: 2025-10-06
Form Type: 425
Source: 0001213900-25-096660
Chunk: 1

Company: Trailblazer Merger Corp I
Filing Date: 2025-10-06
Form: 425
Chunk 1
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 company, 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.

As of September 30, 2025, Trailblazer Merger Corporation I (the “Company”)
entered into an amendment (the “Amendment”) to the Second Amended and Restated Promissory Note (the “Note”) with
Trailblazer Sponsor Group, LLC, pursuant to which the amount of the Note was increased by $300,000 to $4,330,000.

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 October 31, 2025

As previously disclosed, on September 29, 2025, 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, 2025 to March
30 2026, 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 six additional months, unless the closing of the Company’s initial business combination shall have occurred prior thereto.

The
Company is in the process of funding the extension that had previously been approved by the Board by depositing $11,648.56 into the
Trust Account, thereby extending the time available to the Company to consummate its initial business combination from September 30,
2025 to October 31, 2025.

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Important Information About the Business Combination and Where to Find