secwatch / observer
8-K filed December 3, 2025, 6:59 PM ET ticker CMBMF CIK 0001738177
regulatory confidence high sentiment negative materiality 0.75

Cambium Networks dismisses Grant Thornton, hires BDO amid restatements and material weaknesses

Cambium Networks Corp

Machine-readable event card

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secwatch.filing_event.v1
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0001193125-25-306934
form_type
8-K
ticker
CMBMF
cik
0001738177
company_name
Cambium Networks Corp
filed_at
2025-12-03T23:59:59+00:00
discovered_at
2026-05-14T18:02:40.285912+00:00
generated_at
2026-05-16T15:17:44.639718+00:00
sec_items
["4.01", "9.01"]
event_type
regulatory
sentiment
negative
materiality_score
0.75
calibrated_materiality_score
0.75
confidence
high
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text_url
https://secwatch.observer/filing/0001193125-25-306934.txt
edgar_index_url
https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm
edgar_primary_document_url
https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/cmbm-20251126.htm
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Source-grounded claims

0524b362f6e3851e8f9a8965ae9a4911537de48f

Cambium Networks Corp dismissed Grant Thornton LLP as its auditor.

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.

SEC 8-K Item 4.01/4.02 confidence 0.9 SEC evidence

09d343502b9ccbc370603afda7ee489e123d06cb

Cambium Networks Corp engaged BDO USA, PC as its auditor.

On November 26, 2025, the Committee approved the engagement of BDO, as the Company's independent registered public accounting firm, effective immediately.

SEC 8-K Item 4.01/4.02 confidence 0.9 SEC evidence

e810f88b1f9332b08299a71536b88ae3eec0186e

Cambium Networks Corp reported that prior financial statements should not be relied upon.

the Company determined that the Company’s previously issued financial statements and related disclosures for (i) the fiscal years ended December 31, 2022, and December 31, 2023, included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (the “Audited Financial Statements”), and (ii) the interim periods (the “Unaudited Financial Statements”) included in the Company’s Quarterly Reports on Form 10-Q for the periods ended March 31, 2023, June 30, 2023, September 30, 2023, March 31, 2024, June 30, 2024, and September 30, 2024 (collectively the “Non-Reliance Periods”), should be restated and should no longer be relied upon

SEC 8-K Item 4.01/4.02 confidence 0.9 SEC evidence

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This filing

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.

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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.

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(b) Engagement of Independent Registered Public Accounting Firm On May 22, 2026, the Audit Committee appointed Ernst & Young LLP (“EY”) as our independent registered public accounting firm to audit our consolidated financial statements for the fiscal year ending December 31, 2026.

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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.

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This filing

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.

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ments contained in Integrität’s correspondence. Except as expressly set forth herein, this Amendment does not amend, update, or change any other items or disclosures contained in the Original Report.

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same fact type: auditor_change same SEC item: 4.01, 9.01 similar materiality

This filing

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.

Comparable filing

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This filing

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.

Comparable filing

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QWTR

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same fact type: auditor_change same SEC item: 4.01, 9.01 similar materiality

This filing

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.

Comparable filing

On May 5, 2026, and at the request of Quest Water Global, Inc. (the “Company”), Fruci & Associates II, PLLC (“Fruci”) resigned as the Company’s independent accountant.

Filing page SEC filing

MLSS

Milestone Scientific dismisses auditor CBIZ; engages Grassi & Co. effective May 15, 2026

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same fact type: auditor_change same SEC item: 4.01, 9.01 similar materiality

This filing

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.

Comparable filing

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Source: SEC EDGAR
accession 0001193125-25-306934

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