MAYVILLE ENGR CO INC

Ticker: MEC CUSIP: 578605107 Class: Common Stock

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q4 2023

Shares 1,016 Value ($000) $0 Avg Close $12.41 Range $9.72 - $14.89

Q3 2023

Shares 1,694 Value ($000) $0 Avg Close $11.55 Range $9.86 - $13.28

Q1 2023

Shares 3,045 Value ($000) $0 Avg Close $14.57 Range $12.25 - $16.66

Q4 2022

Shares 5,259 Value ($000) $0 Avg Close $9.97 Range $5.95 - $14.37

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2023	1,016	$0	$12.41	$9.72 - $14.89
Q3 2023	1,694	$0	$11.55	$9.86 - $13.28
Q1 2023	3,045	$0	$14.57	$12.25 - $16.66
Q4 2022	5,259	$0	$9.97	$5.95 - $14.37