---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-23-015659"
form_type: "8-K/A"
ticker: "MEC"
cik: "0001766368"
company_name: "Mayville Engineering Company, Inc."
filed_at: "2023-09-12T23:59:59+00:00"
generated_at: "2026-06-10T21:16:56.569591+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# Mayville Engineering completes acquisition of Mid-States Aluminum; files historical financials

## Summary
- Completed acquisition of Mid-States Aluminum on July 1, 2023, and filed Amendment No. 1 to Form 8-K with audited and unaudited financial statements.
- MSA reported net sales of $94.1 million and net income of $12.5 million for the year ended December 31, 2022.
- Provides audited balance sheet showing total assets of $48.6 million and stockholders' equity of $30.7 million as of December 31, 2022.
- Includes unaudited pro forma condensed combined financial information for MEC and MSA as of and for the six months ended June 30, 2023 and year ended December 31, 2022.
- Wipfli LLP issued unqualified audit opinion on MSA's 2022 financial statements.

## SEC filing metadata
- accession: 0001558370-23-015659
- form_type: 8-K/A
- ticker: MEC
- cik: 0001766368
- company_name: Mayville Engineering Company, Inc.
- filed_at: 2023-09-12T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1766368/000155837023015659/0001558370-23-015659-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1766368/000155837023015659/tmb-20230701x8ka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-23-015659
- JSON: https://secwatch.observer/filing/0001558370-23-015659.json
- Plain text: https://secwatch.observer/filing/0001558370-23-015659.txt

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