Jose Revuelta - 03 Mar 2026 Form 4/A - Amendment Insider Report for Montrose Environmental Group, Inc. (MEG)

Role: Chief Strategy Officer
Signature: /s/ Nasym Afsari, Attorney in Fact
Issuer symbol: MEG
Transactions as of: 03 Mar 2026
Net transactions value: -$2,855,930
Form type: 4/A - Amendment
Filing time: 11 Mar 2026, 21:55:45 UTC
Date Of Original Report: 05 Mar 2026
Previous filing: 19 Dec 2025
Next filing: 05 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Revuelta Jose	Chief Strategy Officer	5120 NORTHSHORE DR, NORTH LITTLE ROCK	/s/ Nasym Afsari, Attorney in Fact	11 Mar 2026	0001817845

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MEG	Common Stock	Options Exercise		+60,000	+22%	$6.03^*	329,828	03 Mar 2026	Direct
transaction	MEG	Common Stock	Sale	$1,680,000	-60,000	-18%	$28.00	269,282	03 Mar 2026	Direct	F1
transaction	MEG	Common Stock	Options Exercise		+42,668	+16%	$6.03^*	311,950	04 Mar 2026	Direct
transaction	MEG	Common Stock	Sale	$1,175,930	-42,668	-14%	$27.56	269,282	04 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		-60,000	-44%	$0.000000^*	77,875	03 Mar 2026	Common Stock	60,000	$6.03	Direct	F3
transaction	MEG	Stock Option (Right to Buy)	Options Exercise		-42,668	-55%	$0.000000^*	35,207	04 Mar 2026	Common Stock	42,668	$6.03	Direct	F3

* 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 $28.00 to $28.06, 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 $27.50 to $27.56, 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.
F3	50% of the shares subject to the option vested on June 9, 2017 and the remaining 50% vested on June 9, 2019.

Remarks:

This Form 4 correction does not report any new transactions. The corrections reported herein are solely with respect to transaction codes and the sale price of the securities of sold on March 3, 2026.