HIGHOutside partyCustomer
62.3%
top ten customers
“10-K Item 1: 'our top customer and top ten customers accounted for 13.6% and 62.3% of net sales, respectively'”
MEC · Concentration risk · 10-K extracted
Mayville Engineering Company, I (MEC) concentration risks
Updated
The most significant concentration Mayville Engineering Company, I discloses is top ten customers at 62.3%, classified HIGH by disclosed size. Below: the full set from the latest 10-K — verbatim quotes, filing references, and a synthesis of what these exposures mean together.
Model-generated analysis — not investment advice. Not a registered investment advisor. Past performance does not guarantee future results.
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Source: Mayville Engineering Company, I’s SEC Form 10-K filed — view the filing on SEC EDGAR ↗
At a glance
Disclosed-size breakdown · 3 disclosed concentrations
HIGH1
MEDIUM0
LOW2
Disclosed concentrations
Each card carries a disclosed-size chip (HIGH / MEDIUM / LOW — how large the exposure is as a share of revenue, not how dangerous it is) and a nature tag: Built-in(the company’s own model, geography, or products) or Outside party (an external customer, supplier, or distributor it relies on).
LOWOutside partyCustomer
13.6%
PACCAR
“10-K Item 1A: 'our largest customers in 2025 included PACCAR Inc. and John Deere which accounted for 13.6% and 10.0% of our net sales, respectively'”
LOWOutside partyCustomer
10%
John Deere
“10-K Item 1: 'we provide John Deere, a leading customer, with 2025 net sales accounting for 10.0% of our total revenue'”
TrendMatrix Research · concentration synthesis
What these concentrations mean together
updated 2026-07-06Mayville Engineering's revenue is heavily dependent on a small set of customers: its top ten customers accounted for 62.3% of net sales, a high-disclosed-size dependency that leaves the majority of the business tied to a limited group of relationships. Within that concentration, no single customer dominates disproportionately — PACCAR accounted for 13.6% and John Deere for 10.0% of net sales, each individually a low-disclosed-size exposure. This is a case where the aggregate top-ten concentration is far more consequential than any single named customer: the two largest disclosed customers together represent less than a quarter of sales, meaning a substantial remainder of the top-ten figure is spread across additional relationships not individually broken out. The high-disclosed-size top-ten concentration is the exposure most likely to move a verdict, since it indicates the business's fortunes are closely tied to the ordering patterns and end-market health of a handful of large industrial customers, while PACCAR and John Deere individually present more modest, low-disclosed-size counterparty risk. Diversifying the customer base beyond this concentrated top tier would be the clearest lever to reduce this exposure over time.
For the engine’s reasoning on MEC’s current verdict — including which dimensions drove the score — see the per-dimension breakdown.
Industry peers · Metal Fabrication
Peer concentration profile
| Symbol | Name | HIGH | MEDIUM | LOW | Total |
|---|---|---|---|---|---|
| ESAB | ESAB Corporation | 2 | 0 | 1 | 3 |
| ATI | ATI Inc. | 1 | 1 | 0 | 2 |
| MEC● | Mayville Engineering Company, I | 1 | 0 | 2 | 3 |
| CMC | Commercial Metals Company | 0 | 0 | 0 | 0 |
| CRS | Carpenter Technology Corporatio | 0 | 0 | 0 | 0 |
| GPGI | GPGI, Inc. | 0 | 0 | 0 | 0 |
Concentration counts reflect items disclosed in each peer’s most recent 10-K; disclosed-size classification uses TrendMatrix’s internal 10-K extraction taxonomy.