MONTROSE ENVIRONMENTAL GROUP

Ticker: MEG CUSIP: 615111101 Class: Common Stock

FIRST MANHATTAN CO. LLC.'s Holding History (CIK: 0000728083)

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

Q3 2023

Shares 5 Value ($000) $0 Avg Close $38.00 Range $28.61 - $45.96

Q3 2021

Shares 100 Value ($000) $6 Avg Close $52.31 Range $43.60 - $68.65

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	5	$0	$38.00	$28.61 - $45.96
Q3 2021	100	$6	$52.31	$43.60 - $68.65