MONTROSE ENVIRONMENTAL GROUP

Ticker: MEG CUSIP: 615111101 Class: Common Stock

Mariner, LLC's Holding History (CIK: 0001373442)

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

Q4 2025

Shares 41,697 Value ($000) $1,036 Avg Close $26.42 Range $23.36 - $30.90

Q3 2025

Shares 19,607 Value ($000) $538 Avg Close $26.13 Range $20.34 - $32.00

Q2 2025

Shares 17,600 Value ($000) $385 Avg Close $17.93 Range $10.51 - $24.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	41,697	$1,036	$26.42	$23.36 - $30.90
Q3 2025	19,607	$538	$26.13	$20.34 - $32.00
Q2 2025	17,600	$385	$17.93	$10.51 - $24.00