{"schema_version":"secwatch.filing_event.v1","accession":"0001604028-21-000004","form_type":"8-K","ticker":"WMS","cik":"0001604028","company_name":"ADVANCED DRAINAGE SYSTEMS, INC.","filed_at":"2021-09-08T23:59:59+00:00","discovered_at":"2026-05-14T18:04:18.768314+00:00","generated_at":"2026-06-29T05:12:24.375950+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.45,"calibrated_materiality_score":0.45,"confidence":"high","headline":"Advanced Drainage Systems announces departure of EVP Engineering Ronald R. Vitarelli","bullets":["Ronald R. Vitarelli, EVP Engineering, left the company on September 1, 2021 per separation agreement.","Separation agreement includes release of claims and survival of post-employment covenants; severance conditioned on signing.","Vitarelli had 21 days to consider and 7 days to revoke the agreement; effective after revocation period.","No successor named; terms are standard for an executive departure."],"urls":{"canonical":"https://secwatch.observer/filing/0001604028-21-000004","json":"https://secwatch.observer/filing/0001604028-21-000004.json","markdown":"https://secwatch.observer/filing/0001604028-21-000004.md","text":"https://secwatch.observer/filing/0001604028-21-000004.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1604028/000160402821000004/0001604028-21-000004-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1604028/000160402821000004/wms-20210901.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T05:12:24.375950+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":"48f4860c04","claim":"Ronald R. Vitarelli departed as Executive Vice President, Engineering at ADVANCED DRAINAGE SYSTEMS, INC..","evidence_excerpt":"On September 1, 2021, Advanced Drainage Systems, Inc. (the “Company”) entered into a Separation and Release Agreement (the “Separation Agreement”) with Ronald R. Vitarelli (the “Executive”), the Company’s Executive Vice President, Engineering, in connection with the previously announced conclusion of his employment with the Company.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1604028/000160402821000004/0001604028-21-000004-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"concluded employment"},{"label":"Role","value":"Executive Vice President, Engineering"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}