North Star Investment Management Corp.

Position in MEC — Mayville Engineering Company, Inc.

CIK 1342857 CHICAGO, IL

Position in MEC

as of Mar 31, 2026 · filed Apr 23, 2026 Compact

Position Value

$538,500

New position

Shares Held

30,000

first reported quarter

Ownership

0.146%

of shares outstanding

% of Portfolio

0.05%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2026

1 quarter on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Industrials · as of Mar 31, 2026

North Star Investment Management Corp. holds $1,043,286 across 3 Metal Fabrication names. MEC ranks #1 (51.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MEC	Mayville Engineering Company, Inc. This page	30,000	$538,500
2	CMC	COMMERCIAL METALS Co	7,800	$479,154
3	GPGI	GPGI, Inc.	1,499	$25,632

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$538,500	30,000	—	Shares	Sole	2026-04-23
No filing history on record for this holder in this stock.