{"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","headline":"Cambium Networks dismisses Grant Thornton, hires BDO amid restatements and material weaknesses","bullets":["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."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-306934","json":"https://secwatch.observer/filing/0001193125-25-306934.json","markdown":"https://secwatch.observer/filing/0001193125-25-306934.md","text":"https://secwatch.observer/filing/0001193125-25-306934.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/cmbm-20251126.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T15:17:44.639718+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"0524b362f6e3851e8f9a8965ae9a4911537de48f","claim":"Cambium Networks Corp dismissed Grant Thornton LLP as its auditor.","evidence_excerpt":"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.","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","confidence":0.9},{"claim_id":"09d343502b9ccbc370603afda7ee489e123d06cb","claim":"Cambium Networks Corp engaged BDO USA, PC as its auditor.","evidence_excerpt":"On November 26, 2025, the Committee approved the engagement of BDO, as the Company's independent registered public accounting firm, effective immediately.","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","confidence":0.9},{"claim_id":"e810f88b1f9332b08299a71536b88ae3eec0186e","claim":"Cambium Networks Corp reported that prior financial statements should not be relied upon.","evidence_excerpt":"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","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","confidence":0.9}],"comparable_filings":[{"accession":"0001499275-26-000014","ticker":"GROO","company_name":"GROOVY COMPANY, INC.","filed_at":"2026-05-28T19:28:28+00:00","headline":"Groovy dismisses auditor after SEC suspension, reduces authorized common 99.5%, two officers depart","event_type":"regulatory","sec_items":["4.01","4.02","5.03","5.02","9.01"],"materiality_score":0.8,"calibrated_materiality_score":0.8,"match_reasons":["same fact type: auditor_change","same SEC item: 4.01, 9.01","same event type: regulatory","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001499275-26-000014","json":"https://secwatch.observer/filing/0001499275-26-000014.json","markdown":"https://secwatch.observer/filing/0001499275-26-000014.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1499275/000149927526000014/0001499275-26-000014-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1499275/000149927526000014/groo-20250813_8ka.htm"},"side_by_side_evidence":{"fact_type":"auditor_change","source_excerpt":"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.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","comparable_excerpt":"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.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1499275/000149927526000014/0001499275-26-000014-index.htm"}},{"accession":"0000911147-26-000031","ticker":"CNTY","company_name":"CENTURY CASINOS INC /CO/","filed_at":"2026-05-28T20:11:41+00:00","headline":"Century Casinos dismisses Grant Thornton, appoints EY as new auditor; cites material weaknesses","event_type":"other_material","sec_items":["4.01","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: auditor_change","same SEC item: 4.01, 9.01","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0000911147-26-000031","json":"https://secwatch.observer/filing/0000911147-26-000031.json","markdown":"https://secwatch.observer/filing/0000911147-26-000031.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/911147/000091114726000031/0000911147-26-000031-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/911147/000091114726000031/cnty-20260522x8k.htm"},"side_by_side_evidence":{"fact_type":"auditor_change","source_excerpt":"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.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","comparable_excerpt":"(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.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/911147/000091114726000031/0000911147-26-000031-index.htm"}},{"accession":"0001193125-26-242009","ticker":"ALUR","company_name":"ALLURION TECHNOLOGIES, INC.","filed_at":"2026-05-27T20:35:50+00:00","headline":"Allurion Technologies dismisses Deloitte & Touche, appoints CBIZ; discloses material weaknesses","event_type":"other_material","sec_items":["4.01","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: auditor_change","same SEC item: 4.01, 9.01","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-242009","json":"https://secwatch.observer/filing/0001193125-26-242009.json","markdown":"https://secwatch.observer/filing/0001193125-26-242009.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1964979/000119312526242009/0001193125-26-242009-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1964979/000119312526242009/alur-20260520.htm"},"side_by_side_evidence":{"fact_type":"auditor_change","source_excerpt":"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.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","comparable_excerpt":"On May 22, 2026 (the “Effective Date”), Deloitte was dismissed as our independent registered public accounting firm.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1964979/000119312526242009/0001193125-26-242009-index.htm"}},{"accession":"0001493152-26-025432","ticker":"WAST","company_name":"WASTE ENERGY CORP.","filed_at":"2026-05-27T20:33:41+00:00","headline":"Waste Energy Corp. files 8-K/A: auditor Integrität resigned amid disagreement over AZ litigation legal confirmations","event_type":"other_material","sec_items":["4.01","9.01"],"materiality_score":0.8,"calibrated_materiality_score":0.8,"match_reasons":["same fact type: auditor_change","same SEC item: 4.01, 9.01","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-025432","json":"https://secwatch.observer/filing/0001493152-26-025432.json","markdown":"https://secwatch.observer/filing/0001493152-26-025432.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1515139/000149315226025432/0001493152-26-025432-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1515139/000149315226025432/form8-ka.htm"},"side_by_side_evidence":{"fact_type":"auditor_change","source_excerpt":"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.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","comparable_excerpt":"ments contained in Integrität’s correspondence. Except as expressly\nset forth herein, this Amendment does not amend, update, or change any other items or disclosures contained in the Original Report.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1515139/000149315226025432/0001493152-26-025432-index.htm"}},{"accession":"0001628280-26-037912","ticker":"OCTV","company_name":"Octave Intelligence plc","filed_at":"2026-05-26T10:02:50+00:00","headline":"Octave Intelligence completes spin-off from Hexagon; draws $625M credit facility, changes auditor","event_type":"other_material","sec_items":["1.01","2.03","4.01","5.02","8.01","9.01"],"materiality_score":0.85,"calibrated_materiality_score":0.85,"match_reasons":["same fact type: auditor_change","same SEC item: 4.01, 9.01","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-26-037912","json":"https://secwatch.observer/filing/0001628280-26-037912.json","markdown":"https://secwatch.observer/filing/0001628280-26-037912.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/2083632/000162828026037912/0001628280-26-037912-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2083632/000162828026037912/octaveintelligenceplcclosi.htm"},"side_by_side_evidence":{"fact_type":"auditor_change","source_excerpt":"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.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","comparable_excerpt":"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”).","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/2083632/000162828026037912/0001628280-26-037912-index.htm"}},{"accession":"0001919246-26-000078","ticker":"PTHS","company_name":"Pelthos Therapeutics Inc.","filed_at":"2026-05-21T21:00:16+00:00","headline":"Pelthos Therapeutics dismisses CFO Knuettel, appoints Grant Thornton as auditor","event_type":"leadership","sec_items":["4.01","5.02","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: auditor_change","same SEC item: 4.01, 9.01","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001919246-26-000078","json":"https://secwatch.observer/filing/0001919246-26-000078.json","markdown":"https://secwatch.observer/filing/0001919246-26-000078.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1919246/000191924626000078/0001919246-26-000078-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1919246/000191924626000078/pths-20260515.htm"},"side_by_side_evidence":{"fact_type":"auditor_change","source_excerpt":"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.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","comparable_excerpt":"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.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1919246/000191924626000078/0001919246-26-000078-index.htm"}},{"accession":"0001493152-26-021570","ticker":"QWTR","company_name":"Quest Water Global, Inc.","filed_at":"2026-05-07T23:59:59+00:00","headline":"Quest Water Global's auditor Fruci resigns; no successor yet","event_type":"other_material","sec_items":["4.01","9.01"],"materiality_score":0.75,"calibrated_materiality_score":0.75,"match_reasons":["same fact type: auditor_change","same SEC item: 4.01, 9.01","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-021570","json":"https://secwatch.observer/filing/0001493152-26-021570.json","markdown":"https://secwatch.observer/filing/0001493152-26-021570.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1487091/000149315226021570/0001493152-26-021570-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1487091/000149315226021570/form8-k.htm"},"side_by_side_evidence":{"fact_type":"auditor_change","source_excerpt":"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.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","comparable_excerpt":"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.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1487091/000149315226021570/0001493152-26-021570-index.htm"}},{"accession":"0001493152-26-021512","ticker":"MLSS","company_name":"MILESTONE SCIENTIFIC INC.","filed_at":"2026-05-06T23:59:59+00:00","headline":"Milestone Scientific dismisses auditor CBIZ; engages Grassi & Co. effective May 15, 2026","event_type":"other_material","sec_items":["4.01","9.01"],"materiality_score":0.75,"calibrated_materiality_score":0.75,"match_reasons":["same fact type: auditor_change","same SEC item: 4.01, 9.01","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-021512","json":"https://secwatch.observer/filing/0001493152-26-021512.json","markdown":"https://secwatch.observer/filing/0001493152-26-021512.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/855683/000149315226021512/0001493152-26-021512-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/855683/000149315226021512/form8-k.htm"},"side_by_side_evidence":{"fact_type":"auditor_change","source_excerpt":"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.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1738177/000119312525306934/0001193125-25-306934-index.htm","comparable_excerpt":"The Company engaged Grassi & Co., CPAs, P.C. to be the independent registered public accounting firm to the Company for","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/855683/000149315226021512/0001493152-26-021512-index.htm"}}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}