Company: BLZRW
Filing Date: 2025-09-09
Form Type: S-1MEF
Source: 0001213900-25-086314
Chunk: 1

Company: Trailblazer Acquisition Corp.
Filing Date: 2025-09-09
Form: S-1MEF
Chunk 1
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If this Form is filed to register additional
securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities
Act registration statement number of the earlier effective registration statement for the same offering. ☒ 333-288651

If this Form is a post-effective amendment
filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement
number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment
filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement
number of the earlier effective registration statement for the same offering. ☐

Indicate by check mark whether the registrant
is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company.
See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company”
and “emerging growth company” in Rule 12b-2 of the Exchange Act.

| Large accelerated filer |     | ☐ |     | Accelerated filer         |     | ☐ |
| Non-accelerated filer   |     | ☒ |     | Smaller reporting company |     | ☒ |
|                         |     |   |     | Emerging growth company   |     | ☒ |

If an emerging growth 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 7(a)(2)(B) of the Securities Act. ☐

The Registration Statement shall become effective upon filing with the Securities and Exchange Commission in accordance with Rule 462(b) under the Securities Act of 1933, as amended.

<div align='center'>EXPLANATORY NOTE</div>

This Registration Statement
on Form S-1 is being filed by Trailblazer Acquisition Corp., a blank check company incorporated as a Cayman Islands exempted company (the
“Registrant”), pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and General Instruction V to
Form S-1. This Registration Statement relates to the Registrant’s Registration Statement on Form S-1, as amended (File
No. 333-288