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
- Dismissed Grant Thornton as auditor on Nov 26, 2025; Grant Thornton had not issued any audit report.
- Engaged BDO USA as successor to audit restated 2023 financials and 2024/2025 periods.
- Company disclosed multiple material weaknesses including inventory obsolescence, deferred tax assets, IT controls, and complex accounting issues.
- Previously issued financial statements for 2022-2023 annual and six interim periods require restatement due to revenue recognition errors.
- Non-reliance periods from fiscal 2022 through Q3 2024; restated statements not yet filed.
Machine-readable event card
- schema_version
- secwatch.filing_event.v1
- accession
- 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
- secwatch_canonical_url
- https://secwatch.observer/filing/0001193125-25-306934
- json_url
- https://secwatch.observer/filing/0001193125-25-306934.json
- markdown_url
- https://secwatch.observer/filing/0001193125-25-306934.md
- 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
- generated_by_model
- deepseek-v4-flash:cloud@v2
- review_status
- machine_generated
- human_reviewed
- false
- corrected
- false
- correction_note
- null
- correction_timestamp
- null
- superseded_by
- null
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
Comparable filings
GROO
Groovy dismisses auditor after SEC suspension, reduces authorized common 99.5%, two officers depart
GROOVY COMPANY, INC.
May 28, 2026, 3:28 PM ET
regulatory
Items 4.01, 4.02, 5.03, 5.02, 9.01
same fact type: auditor_change
same SEC item: 4.01, 9.01
same event type: regulatory
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 August 13, 2025, the Board of Directors of Groovy Company, Inc. (the “Company” or the “Registrant”), acting in its capacity as the body charged with the audit oversight function in the absence of a separately designated audit committee, dismissed Olayinka Oyebola & Co. (Chartered Accountants), Public Company Accounting Oversight Board (“PCAOB”) Firm ID No. 5968 (the “Former Accountant”), as the Company’s independent registered public accounting firm, effective immediately.
Filing page
SEC filing
CNTY
Century Casinos dismisses Grant Thornton, appoints EY as new auditor; cites material weaknesses
CENTURY CASINOS INC /CO/
May 28, 2026, 4:11 PM ET
other_material
Items 4.01, 9.01
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
(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.
Filing page
SEC filing
ALUR
Allurion Technologies dismisses Deloitte & Touche, appoints CBIZ; discloses material weaknesses
ALLURION TECHNOLOGIES, INC.
May 27, 2026, 4:35 PM ET
other_material
Items 4.01, 9.01
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 22, 2026 (the “Effective Date”), Deloitte was dismissed as our independent registered public accounting firm.
Filing page
SEC filing
WAST
Waste Energy Corp. files 8-K/A: auditor Integrität resigned amid disagreement over AZ litigation legal confirmations
WASTE ENERGY CORP.
May 27, 2026, 4:33 PM ET
other_material
Items 4.01, 9.01
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
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.
Filing page
SEC filing
OCTV
Octave Intelligence completes spin-off from Hexagon; draws $625M credit facility, changes auditor
Octave Intelligence plc
May 26, 2026, 6:02 AM ET
other_material
Items 1.01, 2.03, 4.01, 5.02, 8.01, 9.01
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 20, 2026, the Audit Committee of the Board of Directors of the Company (i) dismissed PricewaterhouseCoopers AB (“PwC Sweden”) as the Company’s independent registered public accounting firm (the “Dismissal”) and (ii) appointed PricewaterhouseCoopers LLP, United States (“PwC US”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026 (the “Appointment”).
Filing page
SEC filing
PTHS
Pelthos Therapeutics dismisses CFO Knuettel, appoints Grant Thornton as auditor
Pelthos Therapeutics Inc.
May 21, 2026, 5:00 PM ET
leadership
Items 4.01, 5.02, 9.01
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
Also on May 16, 2026, the Audit Committee approved the engagement of Grant Thornton LLP (“Grant Thornton”), as its new independent registered public accounting firm.
Filing page
SEC filing
QWTR
Quest Water Global's auditor Fruci resigns; no successor yet
Quest Water Global, Inc.
May 7, 2026, 7:59 PM ET
other_material
Items 4.01, 9.01
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
MILESTONE SCIENTIFIC INC.
May 6, 2026, 7:59 PM ET
other_material
Items 4.01, 9.01
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
The Company engaged Grassi & Co., CPAs, P.C. to be the independent registered public accounting firm to the Company for
Filing page
SEC filing
This headline and bullets were generated automatically by deepseek-v4-flash:cloud@v2 from the public filing. Read the source on SEC.gov before relying on any specific claim. Not investment advice.
See methodology for how this pipeline works.