{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-070953","form_type":"8-K","ticker":"FISV","cik":"0000798354","company_name":"FISERV INC","filed_at":"2025-04-02T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.315234+00:00","generated_at":"2026-05-24T00:11:04.581697+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Fiserv appoints Takis Georgakopoulos as COO effective April 2, 2025","bullets":["Takis Georgakopoulos, EVP since Sept 2024, named COO; will oversee technology operations and Merchant Solutions.","Guy Chiarello transitions from COO to Vice Chairman supporting enterprise technology strategy and solutions.","Jennifer LaClair continues as Head of Merchant Solutions, reporting to Georgakopoulos.","Georgakopoulos previously served as Global Head of Payments at JPMorgan Chase (2007-2024) and partner at McKinsey."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-070953","json":"https://secwatch.observer/filing/0001193125-25-070953.json","markdown":"https://secwatch.observer/filing/0001193125-25-070953.md","text":"https://secwatch.observer/filing/0001193125-25-070953.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/798354/000119312525070953/0001193125-25-070953-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/798354/000119312525070953/d892958d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T00:11:04.581697+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":"61c09f1b26","claim":"Guy Chiarello changed role as Vice Chairman at FISERV INC.","evidence_excerpt":"Guy Chiarello, the Company’s current Chief Operating Officer, who will transition to the role of Vice Chairman supporting enterprise technology strategy and solutions effective as of April 2, 2025.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/798354/000119312525070953/0001193125-25-070953-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"transitioned"},{"label":"Role","value":"Vice Chairman"}]},{"claim_id":"f934549632","claim":"Takis Georgakopoulos was appointed as Chief Operating Officer at FISERV INC.","evidence_excerpt":"Takis Georgakopoulos, an Executive Vice President of the Company, had been appointed to serve as the Chief Operating Officer, effective April 2, 2025.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/798354/000119312525070953/0001193125-25-070953-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Operating Officer"}]}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}