UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-39394 Montrose Environmental Group, Inc. (Exact name of Registrant as specified in its Charter) Delaware 46-4195044 (State or other j ...

Call Start: 08:30 Call End: 09:23 January 1, 0000 ET Q4 2022 Earnings Conference Call March 01, 2023, 08:30 ET Company Participants Rodny Nacier - ICR Vijay Manthripragada - President, CEO & Director Allan Dicks - CFO Conference Call Participants Christopher Grenga - Needham & Company Timothy Mulrooney - William Blair & Company David Ridley-Lane - Bank of America Merrill Lynch Stephanie Yee - JPMorgan Chase & Co. Operator Greetings, and welcome to the Montrose Environmental Group, Inc. Fourth Quarter 2022 E ...