MAYVILLE ENGR CO INC

Ticker: MEC CUSIP: 578605107 Class: Common Stock

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 512,762 Value ($000) $9,599 Avg Close $16.31 Range $12.25 - $19.77

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	512,762	$9,599	$16.31	$12.25 - $19.77