---
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"
generated_at: "2026-06-29T05:12:24.375950+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Advanced Drainage Systems announces departure of EVP Engineering Ronald R. Vitarelli

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02, 9.01
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001604028-21-000004
- JSON: https://secwatch.observer/filing/0001604028-21-000004.json
- Plain text: https://secwatch.observer/filing/0001604028-21-000004.txt

## Key facts
- Executive change
  Ronald R. Vitarelli departed as Executive Vice President, Engineering at ADVANCED DRAINAGE SYSTEMS, INC..
  - Action: concluded employment
  - Role: Executive Vice President, Engineering
  source text: 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_url: https://www.sec.gov/Archives/edgar/data/1604028/000160402821000004/0001604028-21-000004-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.