---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-278509"
form_type: "8-K"
ticker: "ECVT"
cik: "0001708035"
company_name: "Ecovyst Inc."
filed_at: "2022-11-07T23:59:59+00:00"
generated_at: "2026-06-22T05:35:53.100203+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Ecovyst President Thomas Schneberger resigns effective Nov. 29, 2022

## Summary
- Thomas Schneberger, President of Ecovyst Inc., provided notice of resignation on Nov. 3, 2022.
- Resignation effective November 29, 2022; no successor named in the filing.
- No reason for departure disclosed; no related compensatory arrangements described.

## SEC filing metadata
- accession: 0001193125-22-278509
- form_type: 8-K
- ticker: ECVT
- cik: 0001708035
- company_name: Ecovyst Inc.
- filed_at: 2022-11-07T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1708035/000119312522278509/0001193125-22-278509-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1708035/000119312522278509/d401807d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-278509
- JSON: https://secwatch.observer/filing/0001193125-22-278509.json
- Plain text: https://secwatch.observer/filing/0001193125-22-278509.txt

## Key facts
- Executive change
  Thomas Schneberger resigned as President at Ecovyst Inc..
  - Action: resigned
  - Role: President
  source text: On November 3, 2022, Thomas Schneberger, President of Ecovyst Inc. (“the Company”), provided notice of his resignation from the Company, effective November 29, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1708035/000119312522278509/0001193125-22-278509-index.htm

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