Company: MBVI
Filing Date: 2025-08-19
Form Type: S-1/A
Source: 0001213900-25-078553
Chunk: 1

Company: M3-Brigade Acquisition VI Corp.
Filing Date: 2025-08-19
Form: S-1/A
Chunk 1
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 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 Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

EXPLANATORY NOTE M3 -BrigadeAcquisition VI Corp. (alternatively, the “Registrant,” “we,” “us,” “our” and other similar terms) is filing this Amendment No. 2 (this “Amendment”) to its Registration Statement on Form S -1(File No. 333 -289225) as an exhibits -onlyfiling to file the exhibits attached hereto. Accordingly, this Amendment consists only of the facing page, the explanatory note, Part II of the Registration Statement, the signature pages to the Registration Statement and the filed exhibits. The prospectus is unchanged and has been omitted.

PART II