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  4. [Form 4] Montrose Environmental Group, Inc. Insider Trading Activity

Montrose (NYSE: MEG) GC sells 43,548 shares under 10b5-1 trading plan

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Montrose Environmental Group General Counsel and Secretary Nasym Afsari exercised options and sold shares in a planned transaction. On March 3, 2026, Afsari exercised a stock option for 43,348 shares and received common stock at $6.03 per share, then sold 43,348 shares at a weighted average price of $28.368 per share. On March 2, 2026, Afsari also sold 200 shares at $30.00 per share. The weighted average sale price on March 3 reflects multiple trades between $28.13 and $28.495. After these transactions, Afsari directly owned 204,878 shares of Montrose common stock. The sales were made under a Rule 10b5-1 trading plan.

Positive

  • None.

Negative

  • None.
Insider Afsari Nasym
Role General Counsel and Secretary
Sold 43,548 shs ($1.24M)
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 43,348 $0.00 --
Exercise Common Stock 43,348 $6.03 $261K
Sale Common Stock 43,348 $28.368 $1.23M
Sale Common Stock 200 $30.00 $6K
Holdings After Transaction: Stock Option (Right to Buy) — 0 shares (Direct); Common Stock — 248,226 shares (Direct)
Footnotes (1)
  1. This transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). 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 $28.13 to $28.495, 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. 50% of the shares subject to the option vested on June 9, 2017 and the remaining 50% vested on June 9, 2019.
Form 4 Insider Transactions: What Each Field Means →
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).
X
 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*
Afsari Nasym
(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)
Director 10% Owner
X Officer (give title below) Other (specify below)
General Counsel and Secretary
3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026
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 03/02/2026 S 200(1) D $30 204,878 D
Common Stock 03/03/2026 M 43,348 A $6.03 248,226 D
Common Stock 03/03/2026 S 43,348 D $28.368(2) 204,878 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
Stock Option (Right to Buy) $6.03 03/03/2026 M 43,348 (3) 06/23/2026 Common Stock 43,348 $0.00 0 D
Explanation of Responses:
1. This transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
2. 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 $28.13 to $28.495, 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.
3. 50% of the shares subject to the option vested on June 9, 2017 and the remaining 50% vested on June 9, 2019.
/s/ Nasym Afsari 03/04/2026
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did Montrose Environmental Group (MEG) report for Nasym Afsari?

Nasym Afsari exercised options and sold shares. Afsari converted 43,348 stock options into common shares and then sold 43,348 shares on March 3, 2026, plus 200 shares on March 2, 2026, in open-market transactions.

How many Montrose (MEG) shares did Nasym Afsari sell and at what prices?

Afsari sold a total of 43,548 shares. This included 43,348 shares at a weighted average of $28.368 on March 3, 2026, and 200 shares at $30.00 on March 2, 2026, through open-market trades.

Were Nasym Afsari’s Montrose (MEG) stock sales under a 10b5-1 plan?

Yes, the sales were made under a Rule 10b5-1 plan. The filing states the transactions followed a contract or written plan intended to satisfy Rule 10b5-1(c) affirmative defense conditions, indicating a pre-arranged trading program.

How many Montrose (MEG) shares does Nasym Afsari own after these transactions?

Afsari directly owns 204,878 shares after the trades. Following the option exercise and subsequent sales reported for March 2–3, 2026, total direct ownership of Montrose Environmental Group common stock stands at 204,878 shares.

What stock options did Nasym Afsari exercise at Montrose (MEG)?

Afsari exercised 43,348 stock options. These options converted into common stock on March 3, 2026, at an exercise price of $6.03 per share. The option had vested 50% on June 9, 2017 and the remaining 50% on June 9, 2019.

What was the price range for Nasym Afsari’s March 3, 2026 Montrose (MEG) share sales?

The March 3 sales occurred between $28.13 and $28.495. The reported $28.368 per-share sale price is a weighted average, with multiple trades executed within that disclosed price range for Montrose common stock.