Montrose Environmental CEO reports tax-share withholding transaction

Montrose Environmental Group, Inc. reported a routine insider transaction by its President & CEO, who is also a director.

Rhea-AI Filing Summary

Montrose Environmental Group, Inc. reported a routine insider transaction by its President & CEO, who is also a director. On 12/16/2025, 152,886 shares of common stock were withheld and disposed of at $26.4 per share to cover tax withholding obligations tied to vesting restricted stock units. Following this tax withholding event, the reporting person directly beneficially owns 163,751 shares of Montrose Environmental common stock.

Insider Trade Summary

Exercise Price or Tax Liability: 152,886 shares

Exercise Price or Tax Liability 1 txn

Insider Manthripragada Vijay

Role President & CEO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	152,886	$26.40	$4.04M

Holdings After Transaction: Common Stock — 163,751 shares (Direct)

Footnotes (1)

1. F1. Withholding of shares of common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

FAQ

What insider transaction did Montrose Environmental Group (MEG) disclose?

The company disclosed that its President & CEO, who is also a director, had 152,886 shares of common stock withheld and disposed of on 12/16/2025 to satisfy tax withholding obligations related to vesting restricted stock units.

How many Montrose Environmental (MEG) shares were involved in the CEO's transaction?

A total of 152,886 shares of Montrose Environmental common stock were withheld and disposed of in the reported transaction.

What price was used for the Montrose Environmental (MEG) tax withholding shares?

The 152,886 shares of Montrose Environmental common stock were withheld and disposed of at a price of $26.4 per share.

Why were Montrose Environmental (MEG) shares withheld from the CEO?

Shares were withheld to satisfy tax withholding obligations in connection with the vesting of the CEO's restricted stock units.

How many Montrose Environmental (MEG) shares does the CEO own after this transaction?

After the reported transaction, the CEO beneficially owns 163,751 shares of Montrose Environmental common stock directly.

What is the CEO's relationship to Montrose Environmental Group (MEG)?

The reporting person is both a Director and an Officer, serving as President & CEO of Montrose Environmental Group, Inc.

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Accepted by SEC EDGAR 12/19/2025 - 07:17 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Manthripragada Vijay

(Last) (First) (Middle)

5120 NORTHSHORE DR

(Street)

NORTH LITTLE ROCK AR 72118

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Montrose Environmental Group, Inc. [ MEG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
12/16/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/16/2025		F		152,886(1)	D	$26.4	163,751	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Withholding of shares of common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

	/s/ Nasym Afsari, Attorney in Fact	12/19/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.