Item 4.01. Change in Registrant's Certifying Accountant.

(a) Dismissal of Previous Independent Registered Public Accounting Firm

On March 17, 2023, Coliseum Acquisition Corp. (the "Company") terminated its engagement with Marcum LLP ("Marcum"), the Company's previous independent registered public accountant, effective as of March 17, 2023. The dismissal of Marcum was approved by the Company's audit committee (the "Audit Committee") in accordance with the authority as specified in its charter.

Marcum's reports on the Company's financial statements the period from February 5, 2021 (inception) through December 31, 2021 and in the subsequent interim periods through the date hereof did not contain any adverse opinion or disclaimer of opinion, nor were they qualified or modified as to uncertainty, audit scope, or accounting principles.

During the period from February 5, 2021 (inception) through December 31, 2021 and in the subsequent interim periods through the date hereof, there were (i) no "disagreements" (as described in Item 304(a)(1)(iv) of Regulation S-K and the related instructions) between the Company and Marcum on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which, if not resolved to Marcum's satisfaction, would have caused Marcum to make reference thereto in their reports on the financial statements for such period, and (ii) no "reportable events" within the meaning of Item 304(a)(1)(v) of Regulation SK, except that, as previously disclosed in Item 9A of the Company's Annual Report on Form 10-K for the year ended December 31, 2021, management concluded that a deficiency in internal control over financial reporting existed relating to the accounting treatment for complex financial instruments and that the failure to properly account for such instruments constituted a material weakness such that there was a reasonable possibility that a material misstatement of the Company's annual or interim financial statements will not be prevented or detected on a timely basis. This material weakness resulted in the restatement of the Company's audited financial statement as of June 25, 2021 and unaudited financial statements as of and for the period ended June 30, 2021.

The Company provided Marcum with a copy of the disclosures it is making in this Form 8-K prior to its submission to the Securities and Exchange Commission (the "Commission") and requested that Marcum furnish the Company with a letter addressed to the Commission stating whether or not it agrees with the above statements. A copy of Marcum's letter, dated March 17, 2023, is filed as Exhibit 16.1 to this Form 8-K.

(b) Engagement of New Independent Registered Public Accounting Firm

On March 13, 2023, the Company engaged RBSM LLP ("RBSM") as its new independent registered public accountant for the fiscal year ending December 31, 2022. The engagement of RBSM was approved by the Audit Committee in accordance with the authority as specified in its charter.

During the period from February 5, 2021 (inception) through December 31, 2021 and in the subsequent interim periods through the date hereof, the Company has not consulted with RBSM regarding either: (i) the application of accounting principles to any specified transaction, either completed or proposed, or the type of audit opinion that might be rendered on the Company's financial statements, and neither a written report nor oral advice was provided to the Company that RBSM concluded was an important factor considered by the Company in reaching a decision as to any accounting, auditing or financial reporting issue; or (ii) any matter that was either the subject of a disagreement (as defined in Regulation S-K, Item 304(a)(1)(iv) and the related instructions) or a reportable event (as defined in Regulation S-K, Item 304(a)(1)(v)).

Item 9.01. Financial Statements and Exhibits.





(d) Exhibits

The following exhibits are being filed herewith:





Exhibit No.   Description
  16.1          Letter from Marcum LLP to the Securities and Exchange Commission,
              dated March 17, 2023.
104            Cover Page Interactive Data File (formatted as inline XBRL).

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