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, 2023 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) (State or other jurisdiction of incor ...

Montrose Environmental Group, Inc. (NYSE:MEG) Q4 2023 Earnings Conference Call February 29, 2024 8:30 AM ET Company Participants Rodny Nacier - IR Vijay Manthripragada - President and CEO Allan Dicks - CFO Conference Call Participants Jim Ricchiuti - Needham & Company Tim Mulrooney - William Blair David Ridley-Lane - Bank of America Brian Butler - Stifel Operator Good day, and welcome to Montrose Environmental Group Fourth Quarter 2023 Earnings Conference Call. [Operator Instructions] Please note that this ...

Exhibit 99.1 MONTROSE ENVIRONMENTAL GROUP ANNOUNCES FOURTH QUARTER AND FULL YEAR 2023 RESULTS - Record Full Year Revenue and Cash Flow from Operations - - Net Loss of $30.9 million; Basic and Diluted Net Loss Per Share of $1.57 - - Significant Increase in Diluted Adjusted Net Income Per Share 1 - - Record Full Year Consolidated Adjusted EBITDA1 - - Expansion in Segment Level and Consolidated Adjusted EBITDA1 as Percent of Revenue for Full Year - - Continued Success Consolidating Fragmented Industry with Hig ...

Montrose Environmental Group, Inc. (NYSE:MEG) Q3 2023 Earnings Conference Call November 8, 2023 8:30 AM ET Company Participants Rodny Nacier - Investor Relations Vijay Manthripragada - President and Chief Executive Officer Allan Dicks - Chief Financial Officer Conference Call Participants Tim Mulrooney - William Blair Jim Ricchiuti - Needham & Company David Ridley-Lane - Bank of America Wade Suki - Capital One Stephanie Yee - JP Morgan Operator Good morning and welcome to the Montrose Environmental Group, I ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 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 o ...

Included in this presentation and the accompanying oral presentation are certain financial measures that are not calculated in accordance with U.S. generally accepted accounting principles ("GAAP") designed to supplement, and not substitute, Montrose's financial information presented in accordance with GAAP. The non-GAAP measures as defined by Montrose may not be comparable to similar non-GAAP measures presented by other companies. The presentation of such measures, which may include adjustments to exclude ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 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 oth ...

Montrose Environmental Group, Inc. (NYSE:MEG) Q2 2023 Earnings Conference Call August 9, 2023 8:30 AM ET Company Participants Rodny Nacier - Investor Relations Vijay Manthripragada - President, Chief Executive Officer & Director Allan Dicks - Chief Financial Officer Conference Call Participants Jim Ricchiuti - Needham & Company Sam Kusswurm - William Blair Andrew Obin - Bank of America Stephanie Yee - JPMorgan Wade Suki - Capital One Operator Good day, and welcome to the Montrose Environmental Group, Inc. S ...

Safe Harbor Included in this presentation and the accompanying oral presentation are certain financial measures that are not calculated in accordance with U.S. generally accepted accounting principles ("GAAP") designed to supplement, and not substitute, Montrose's financial information presented in accordance with GAAP. The non-GAAP measures as defined by Montrose may not be comparable to similar non-GAAP measures presented by other companies. The presentation of such measures, which may include adjustments ...

Montrose Environmental Group, Inc. (NYSE:MEG) Q1 2023 Earnings Conference Call May 9, 2023 8:30 AM ET Company Participants Rodny Nacier - Investor Relations Vijay Manthripragada - President, Chief Executive Officer & Director Allan Dicks - Chief Financial Officer Conference Call Participants Samuel Kusswurm - William Blair & Company Christopher Grenga - Needham & Company David Ridley-Lane - Bank of America Merrill Lynch Wade Suki - Capital One Operator Hello and welcome to the Montrose Environmental Group, ...