{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-043511","form_type":"8-K","ticker":"RBBN","cik":"0001708055","company_name":"Ribbon Communications Inc.","filed_at":"2026-04-15T23:59:59+00:00","discovered_at":"2026-05-14T18:02:32.780936+00:00","generated_at":"2026-05-15T06:08:01.153222+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Ribbon appoints Louis Silver to Board of Directors, board expands to nine","bullets":["Louis Silver appointed to Board effective April 15, 2026; board increases to nine members, six independent.","Silver is designee of Swarth Investments Ltd. under stockholders' agreement.","Silver brings over 25 years board experience; currently serves on Ceva, Inc. board as Audit Committee Chairman.","He will receive $60k annual retainer and RSUs valued at ~$170k pro-rated, plus potential committee retainers."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-043511","json":"https://secwatch.observer/filing/0001104659-26-043511.json","markdown":"https://secwatch.observer/filing/0001104659-26-043511.md","text":"https://secwatch.observer/filing/0001104659-26-043511.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1708055/000110465926043511/0001104659-26-043511-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1708055/000110465926043511/tm2611696d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T06:08:01.153222+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}