---
schema_version: "secwatch.filing_event.v1"
accession: "0001564590-22-013079"
form_type: "8-K"
ticker: "MEC"
cik: "0001766368"
company_name: "Mayville Engineering Company, Inc."
filed_at: "2022-04-01T23:59:59+00:00"
generated_at: "2026-06-26T10:57:33.796636+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# MEC CEO Robert D. Kamphuis to retire on Sept 30, 2022; national search launched

## Summary
- Kamphuis, CEO since 2005, will retire as Chairman, President and CEO on September 30, 2022.
- Under his leadership, MEC grew from ~$62M revenue (660 employees) to ~$450M (2,250 employees) by 2021.
- Company retains a nationally recognized executive search firm to find a new CEO.
- Retirement agreement provides base salary through Sept 30, pro-rated 2022 bonus; unvested equity forfeited.
- Company will repurchase Kamphuis's residence at original price if requested before March 15, 2023.

## SEC filing metadata
- accession: 0001564590-22-013079
- form_type: 8-K
- ticker: MEC
- cik: 0001766368
- company_name: Mayville Engineering Company, Inc.
- filed_at: 2022-04-01T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1766368/000156459022013079/0001564590-22-013079-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1766368/000156459022013079/mec-8k_20220331.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001564590-22-013079
- JSON: https://secwatch.observer/filing/0001564590-22-013079.json
- Plain text: https://secwatch.observer/filing/0001564590-22-013079.txt

## Key facts
- Executive change
  Robert D. Kamphuis departed as Chairman, President and Chief Executive Officer at Mayville Engineering Company, Inc..
  - Action: retire
  - Role: Chairman, President and Chief Executive Officer
  source text: On March 31, 2022 Mayville Engineering Company, Inc. (the “Company”) announced that Robert D. Kamphuis, the Company’s Chairman, President and Chief Executive Officer, will retire (including as a director of the Company) as of September 30, 2022 (the “Retirement Date”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1766368/000156459022013079/0001564590-22-013079-index.htm

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