Cambium Networks Corporation filed SEC Form 8-K: Changes in Registrant's Certifying Accountant, Financial Statements and Exhibits

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

CAMBIUM NETWORKS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

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 13(a) of the Exchange Act. ☐

Item 4.01 Changes in Registrant’s Certifying Accountant.

(a) Dismissal of Independent Registered Public Accounting Firm

On November 26, 2025, the Audit Committee (the “Committee”) of the Board of Directors of Cambium Networks Corporation (the “Company”) dismissed Grant Thornton LLP (“Grant Thornton”) as the Company’s independent registered public accounting firm.

As noted in the Current Report on Form 8-K filed on April 11, 2024, Grant Thornton was engaged as the Company’s independent registered public accounting firm on April 5, 2024. Grant Thornton has not issued an audit report on the consolidated financial statements of the Company for any year or any period.

During the period from April 5, 2024 through November 26, 2025, there have been no (1) disagreements within the meaning of Item 304(a)(1)(iv) of Regulation S-K between the Company and Grant Thornton on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, any of which, if not resolved to Grant Thornton’s satisfaction, would have caused Grant Thornton to make reference thereto in their reports, or (2) “reportable events” (as described in Item 304(a)(1)(v) of Regulation S-K), except for:

The Audit Committee has discussed the aforementioned reportable events with Grant Thornton, and the Company has authorized Grant Thornton to respond fully to inquiries by BDO, the successor independent registered public accounting firm of the Company, concerning the reportable events.

The Company has provided a copy of the foregoing disclosures to Grant Thornton and requested that Grant Thornton furnish it with a letter addressed to the Securities and Exchange Commission stating whether Grant Thornton agrees with the above statements. A copy of Grant Thornton’s letter, dated December 3, 2025, is filed as Exhibit 16.1 to this Current Report on Form 8-K.

(b) Engagement of New Independent Registered Public Accounting Firm.

On November 26, 2025, the Committee approved the engagement of BDO, as the Company's independent registered public accounting firm, effective immediately. The Company has engaged BDO to perform audit services for the Company’s 2023, 2024, and 2025 fiscal periods, including the audit of the restated consolidated financial statements for the fiscal year ended December 31, 2023 and the audit of the Company’s financial statements as of and for the fiscal years ended December 31, 2024 and 2025.

During the two most recent fiscal years and through the date of this Current Report, the Company has not consulted with BDO with respect to (i) the application of accounting principles to a specified transaction, either completed or proposed; or the type of audit opinion that might be rendered on the Company’s consolidated financial statements, and no written report or oral advice was provided to the Company that BDO concluded was an important factor considered by the Company in reaching a decision as to the accounting, auditing or financial reporting issue, or (ii) any matter that was the subject of a disagreement (as described in Item 304(a)(1)(iv) of Regulation S-K and related instructions to Item 304(a)(2) of Regulation S-K) or a reportable event (as described in Item 304(a)(1)(v) of Regulation S-K).

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.