Item 4.02 Non-Reliance on Previously Issued Financial Statements or a Related

Audit Report or Completed Interim Review.

The Securities and Exchange Commission (the "SEC") has recently issued a number of comment letters indicating that securities which are subject to possible redemption, such as the Class A common stock (the "Public Shares") of M3-Brigade Acquisition II Corp. (the "Company"), should be recorded at redemption amount and classified as temporary equity in accordance with FASB ASC 480, "Distinguishing Liabilities from Equity" (the "SEC Guidance"). At issuance on March 8, 2021, the Public Shares were classified by the Company as permanent equity and the Company continued to classify the Public Shares as permanent equity in its quarterly unaudited financial statements and related footnotes, as of, and for the periods ended, March 31, 2021 and June 30, 2021 (the "Quarterly Reports"). For a full description of the Public Shares, please refer to the Company's final prospectus filed in connection with its initial public offering ("IPO") on March 3, 2021.

On November 15, 2021, the audit committee of the board of directors of the Company (the "Audit Committee") determined, after considering information provided by the Company's management and the Company's independent registered public accounting firm, Marcum LLP, that the Public Shares should be recognized outside of permanent equity for all reporting periods in order to align with the SEC Guidance because the Company does not have control of the outcome which could give rise the redemption. If originally recorded outside of permanent equity, the Public Shares would have been measured at the full redemption value at each reporting date, with changes in recorded value recognized as a charge against paid in capital and accumulated deficit earnings in the period of change (which only occurred at the date of the IPO). The Audit Committee also determined that the Quarterly Reports and the Company's audited balance sheet as of March 8, 2021 as reported in the Company's Form 8-K filed on March 12, 2021 should no longer be relied upon due to these changes and should be restated.

The Company has filed its quarterly unaudited financial statements and related footnotes as of and for the period ended September 30, 2021 (the "Third Quarter Filing") reflecting this reclassification of the Public Shares as temporary equity. The adjustments to the financial statement items for the periods ended March 8, 2021, March 31, 2021 and June 30, 2021 are set forth in the financial statements included in the Third Quarter Filing, including a description of the restatement and its impact on previously reported amounts.

Going forward, the Company intends to classify the Public Shares outside of permanent equity for so long as they remain subject to possible redemption. As a result, the Company expects to measure the Public Shares at full redemption value at each relevant reporting date, with changes in recorded value recognized as a charge against paid in capital and accumulated deficit earnings in the period of change (which only occurred at the date of the IPO).

The Company does not expect any of the above changes will have any impact on its cash position and cash held in the trust account.

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