{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-23-008000","form_type":"8-K","ticker":"OSIS","cik":"0001039065","company_name":"OSI SYSTEMS INC","filed_at":"2023-01-30T23:59:59+00:00","discovered_at":"2026-05-14T18:03:43.619472+00:00","generated_at":"2026-06-20T06:21:40.298766+00:00","sec_items":["4.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"OSI Systems appoints Grant Thornton as auditor, replacing Moss Adams for FY23","bullets":["Audit Committee approved Grant Thornton as independent auditor for fiscal year ending June 30, 2023.","Effective upon filing of Form 10-Q for period ended Dec 31, 2022; competitive selection process cited.","Moss Adams reports for FY21 and FY22 contained no adverse opinions or modifications.","No disagreements or reportable events occurred during the audits or subsequent interim period.","Company did not consult Grant Thornton prior to appointment on any accounting or audit matters."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-23-008000","json":"https://secwatch.observer/filing/0001104659-23-008000.json","markdown":"https://secwatch.observer/filing/0001104659-23-008000.md","text":"https://secwatch.observer/filing/0001104659-23-008000.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1039065/000110465923008000/0001104659-23-008000-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1039065/000110465923008000/tm234483d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-20T06:21:40.298766+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":"d411b4a7d9eff2d2a30009cbd85a3442149be90b","claim":"OSI SYSTEMS INC dismissed Moss Adams LLP as its auditor.","evidence_excerpt":"This action will replace Moss Adams as the Company's independent registered public accounting firm effective upon the date of the filing of the Company's Form 10-Q for the period ended December 31, 2022.","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1039065/000110465923008000/0001104659-23-008000-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"dismissal"},{"label":"Auditor","value":"Moss Adams LLP"},{"label":"Successor","value":"Grant Thornton LLP"}],"fact_type":"auditor_change"},{"claim_id":"dcf2b4aa71be5e490dbedcc5c90e0567ffdd9322","claim":"OSI SYSTEMS INC engaged Grant Thornton LLP as its auditor.","evidence_excerpt":"(a) Following a competitive selection process where the Audit Committee (the “Committee”) of the Board of Directors of OSI Systems, Inc. (the “Company”) invited several public accounting firms to participate, including Moss Adams LLP (“Moss Adams”), the Company’s current independent registered public accounting firm, on January 25, 2023, the Committee approved the appointment of Grant Thornton LLP (“Grant Thornton”) as the Company’s independent registered public accounting firm for the fiscal year ending June 30, 2023.","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1039065/000110465923008000/0001104659-23-008000-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"engagement"},{"label":"Auditor","value":"Grant Thornton LLP"}],"fact_type":"auditor_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}