---
schema_version: "secwatch.filing_event.v1"
accession: "0001708035-24-000120"
form_type: "8-K"
ticker: "ECVT"
cik: "0001708035"
company_name: "Ecovyst Inc."
filed_at: "2024-12-16T23:59:59+00:00"
generated_at: "2026-05-29T03:00:51.797998+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Ecovyst grants retention bonus to VP Whittleston linked to strategic review of catalysts business

## Summary
- Paul Whittleston (VP & President, Advanced Materials & Catalysts) granted retention bonus of 1.5x base salary.
- Bonus payable in two equal installments contingent on continued employment and certain outcomes of strategic review.
- Strategic review is for the Advanced Materials & Catalysts business segment.
- Approved by Compensation Committee on December 10, 2024.

## SEC filing metadata
- accession: 0001708035-24-000120
- form_type: 8-K
- ticker: ECVT
- cik: 0001708035
- company_name: Ecovyst Inc.
- filed_at: 2024-12-16T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1708035/000170803524000120/0001708035-24-000120-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1708035/000170803524000120/ecvt-20241210.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001708035-24-000120
- JSON: https://secwatch.observer/filing/0001708035-24-000120.json
- Plain text: https://secwatch.observer/filing/0001708035-24-000120.txt

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