J. THOMAS PRESBY - 02 Mar 2026 Form 4 Insider Report for Montrose Environmental Group, Inc. (MEG)

Role: Director
Signature: /s/ Nasym Afsari, Attorney in Fact
Issuer symbol: MEG
Transactions as of: 02 Mar 2026
Net transactions value: -$288,691
Form type: 4
Filing time: 04 Mar 2026, 18:30:04 UTC
Previous filing: 06 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
PRESBY J THOMAS	Director	5120 NORTHSHORE DR, NORTH LITTLE ROCK	/s/ Nasym Afsari, Attorney in Fact	04 Mar 2026	0001192023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MEG	Common Stock	Options Exercise		+10,000	+16%	$9.76^*	72,614	02 Mar 2026	Direct
transaction	MEG	Common Stock	Sale	$274,972	-9,541	-13%	$28.82	63,073	02 Mar 2026	Direct	F1
transaction	MEG	Common Stock	Sale	$13,720	-459	-0.73%	$29.89	62,614	02 Mar 2026	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MEG	Stock Option (Right to Buy)	Options Exercise		-10,000	-100%	$0.000000^*	0	02 Mar 2026	Common Stock	10,000	$9.76	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares of common stock of the Issuer were sold in multiple transactions by the Reporting Person at prices ranging from $28.55 to $29.53, inclusive. The Reporting Person undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer full information regarding the number of shares of common stock sold at each separate price within the range.
F2	The price reported in Column 4 is a weighted average price. These shares of common stock of the Issuer were sold in multiple transactions by the Reporting Person at prices ranging from $29.635 to $29.905, inclusive. The Reporting Person undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer full information regarding the number of shares of common stock sold at each separate price within the range.

Content

The price reported in Column 4 is a weighted average price. These shares of common stock of the Issuer were sold in multiple transactions by the Reporting Person at prices ranging from $28.55 to $29.53, inclusive. The Reporting Person undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer full information regarding the number of shares of common stock sold at each separate price within the range.

The price reported in Column 4 is a weighted average price. These shares of common stock of the Issuer were sold in multiple transactions by the Reporting Person at prices ranging from $29.635 to $29.905, inclusive. The Reporting Person undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer full information regarding the number of shares of common stock sold at each separate price within the range.