Financial Data and Key Metrics Changes - In Q1 2025, the company achieved record revenue of $177.8 million, a 14.5% increase from $155.3 million in the prior year [19] - Consolidated adjusted EBITDA reached $19 million, a 12.5% increase compared to $16.9 million in the prior year, with an EBITDA margin of 10.7% [20] - Diluted adjusted net income per share was $0.07, down from $0.16 in the prior year, primarily due to higher interest and tax expenses [21] Business Line Data and Key Metrics Changes - Assessment, Permitting and Response (APNR) segment revenue decreased to $53.1 million from $58.6 million, with adjusted EBITDA margin dropping to 19.9% [22] - Measurement and Analysis segment revenue increased by 29.8% to $59 million, with adjusted EBITDA margin improving to 23.3% [23] - Remediation and Reuse segment revenue rose by 28.2% to $65.7 million, although adjusted EBITDA margin declined to 9% [24] Market Data and Key Metrics Changes - The company reported five consecutive quarters of revenue growth from PFAS services, which account for 10% to 15% of total revenue [60] - International operations thrived, with a recent award from a major public mining company in Australia, reflecting the growing demand for sustainable practices [11] Company Strategy and Development Direction - The company announced a temporary pause in acquisitions to focus on organic revenue growth, enhanced EBITDA margins, and balance sheet optimization [7] - Increased full-year 2025 EBITDA guidance to a range of $103 million to $110 million, reflecting confidence in continued demand and operational efficiency [8] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the demand cycle sustaining despite potential regulatory changes, noting that clients are maintaining their course [35] - The company anticipates continued strong demand driven by private sector clients and state government initiatives [10] Other Important Information - The company redeemed $60 million of Series A-two Preferred stock and plans to redeem the remaining $62 million in 2025 [14] - A stock repurchase program of up to $40 million was approved by the Board to address the disconnect between strong performance and public stock valuation [14] Q&A Session Summary Question: Discussion on environmental deregulation and its impact - Management highlighted that while deregulation is a topic of interest, clients are largely staying the course due to long planning cycles and compliance needs [35] Question: Insights on the strong performance of the Measurement and Analysis business - Management noted that the strong performance is due to sustained demand across multiple business lines and improved operating efficiency [42] Question: Drivers of expected margin expansion for the remainder of the year - Management indicated that sustained demand, improved operating effectiveness, and normalization of segment margins are key drivers for margin expansion [48] Question: Impact of potential tariff exposure on business - Management expects minimal impact from tariffs and noted constructive dialogue with clients regarding pricing adjustments if necessary [50] Question: Seasonality in the Measurement and Analysis business - Management explained that the strong Q1 performance was a catch-up from a previous pause in activity and does not expect this trend to repeat [56] Question: Future growth of PFAS-related revenue - Management confirmed that PFAS revenue is additive to organic growth and is expected to continue growing due to regulatory clarity [60] Question: Project delays in the Remediation and Reuse segment due to macro uncertainty - Management stated that macroeconomic factors have minimal impact on the segment, and solid growth is expected [62] Question: Leverage ratio expectations post-preferred stock redemption - Management expects the leverage ratio to be below 3 after the redemption of preferred stock, targeting under 3.25 for future acquisitions [70]

WELCOME TO THE Q1 2025 EARNINGS CALL May 8, 2025 © 2025 Montrose Environmental Group, Inc. • Proprietary and Confidential 2 Key Updates OPERATING CASH FLOW $5.5M $27.5M Increase over Q1 2024 REVENUE $177.8M 14.5% Increase over Q1 2024 CONSOLIDATED ADJUSTED EBITDA1 $19.0M 10.7% of Revenue © 2025 Montrose Environmental Group, Inc. • Proprietary and Confidential 4 • • • • • • • © 2025 Montrose Environmental Group, Inc. • Proprietary and Confidential 5 ✓ • • ✓ ✓ • ✓ ✓ ✓ ✓ • • ✓ • Consolidated Adjusted EBITDA1 R ...

Core Insights - Montrose Environmental (MEG) reported revenue of $177.83 million for Q1 2025, a 14.5% year-over-year increase, with an EPS of $0.07 compared to $0.16 a year ago [1] - The revenue exceeded the Zacks Consensus Estimate of $167.97 million by 5.87%, and the EPS surprised positively by 158.33% against a consensus estimate of -$0.12 [1] Revenue Breakdown - Revenues from Assessment, Permitting and Response were $53.12 million, below the two-analyst average estimate of $56.99 million, reflecting a year-over-year decline of 9.3% [4] - Revenues from Remediation & Reuse reached $65.68 million, surpassing the two-analyst average estimate of $54.98 million, marking a year-over-year increase of 28.2% [4] - Revenues from Measurements & Analysis amounted to $59.03 million, exceeding the average estimate of $49.35 million from two analysts, with a year-over-year change of 29.8% [4] Stock Performance - Montrose Environmental's shares have returned 42.1% over the past month, significantly outperforming the Zacks S&P 500 composite's 10.6% change [3] - The stock currently holds a Zacks Rank 5 (Strong Sell), indicating potential underperformance relative to the broader market in the near term [3]

分组1 - Montrose Environmental (MEG) reported quarterly earnings of $0.07 per share, exceeding the Zacks Consensus Estimate of a loss of $0.12 per share, representing an earnings surprise of 158.33% [1] - The company posted revenues of $177.83 million for the quarter ended March 2025, surpassing the Zacks Consensus Estimate by 5.87%, compared to year-ago revenues of $155.33 million [2] - Over the last four quarters, Montrose Environmental has surpassed consensus EPS estimates two times and topped consensus revenue estimates two times [2] 分组2 - The stock has underperformed the market, losing about 17.7% since the beginning of the year, while the S&P 500 declined by 4.7% [3] - The current consensus EPS estimate for the coming quarter is $0.13 on revenues of $187.79 million, and for the current fiscal year, it is $0.38 on revenues of $758.92 million [7] - The Waste Removal Services industry, to which Montrose Environmental belongs, is currently in the bottom 23% of the Zacks Industry Rank, indicating potential challenges ahead [8]

Exhibit 99.1 Montrose Environmental Group Reports Record First Quarter Results, Increases 2025 Guidance, and Announces Inaugural Stock Repurchase Program First Quarter 2025 Highlights (comparisons to first quarter 2024) Increased 2025 Guidance Strategic Capital Allocation Update Little Rock, Arkansas (May 7, 2025) – Montrose Environmental Group, Inc. (the "Company," "Montrose" or "MEG") (NYSE: MEG) is on a mission to help protect the air we breathe, the water we drink, and the soil that feeds us, and aims t ...

Core Insights - Montrose Environmental Group reported its highest-ever first-quarter revenue, Consolidated Adjusted EBITDA, and operating cash flow for Q1 2025, driven by strong organic growth and strategic capital allocation [3][6][12] - The company has increased its 2025 guidance for Consolidated Adjusted EBITDA to a range of $103.0 million to $110.0 million, reflecting a positive outlook despite macroeconomic uncertainties [4][5] - Montrose aims to achieve high-single-digit organic revenue growth and enhance margins while maintaining liquidity and optimizing its balance sheet [3][5] Financial Performance - Total revenue for Q1 2025 was $177.8 million, a 14.5% increase from $155.3 million in Q1 2024, attributed to organic growth and contributions from acquisitions [6][8] - The net loss for Q1 2025 was $19.4 million, or $0.64 per diluted share, compared to a net loss of $13.4 million, or $0.53 per diluted share in the prior year [9][10] - Adjusted Net Income for Q1 2025 was $5.8 million, or $0.07 per diluted share, down from $8.4 million, or $0.16 per diluted share in Q1 2024 [10][36] Segment Performance - The Remediation and Reuse segment generated $65.7 million in revenue, while the Measurement and Analysis segment contributed $59.0 million, reflecting strong demand across diverse end markets [8][20] - The Assessment, Permitting and Response segment saw a revenue decline to $53.1 million due to the absence of larger projects that occurred in the prior year [8][20] Cash Flow and Liquidity - Operating cash flow for Q1 2025 was $5.5 million, a significant improvement from a cash outflow of $22.0 million in the prior year [12][23] - As of March 31, 2025, Montrose had a leverage ratio of 2.2x and liquidity of $294.2 million, including $30.3 million in cash [14][21] Strategic Initiatives - The company announced a stock repurchase program of up to $40.0 million and redeemed $60.0 million of preferred equity in April 2025 [6][14] - Montrose's strategic focus includes enhancing environmental stewardship while driving economic growth through its integrated service portfolio [3][5]

Group 1: Company Overview - Montrose Environmental Group is focused on enhancing environmental stewardship while supporting economic development, with a recent contract worth $4 million AUD for environmental services in Australia's Bowen Basin [1][2] - The company employs approximately 3,400 people across over 100 locations globally, combining local knowledge with an integrated approach to deliver innovative solutions [4] Group 2: Industry Context - The global demand for steel is increasing, prompting Montrose to assist the industry in transitioning to more sustainable practices [2] - Montrose's expertise in environmental consulting, including risk assessments and regulatory compliance, positions it as a trusted partner for responsible mining operations [3][4] Group 3: Project Details - The project in Bowen Basin includes advanced environmental baseline and impact assessments, crucial for the mine's development and sustainability [1] - Montrose aims for fast-tracked delivery over the coming year, reinforcing its role in advancing sustainable development in resource-intensive industries [1][3]

Core Insights - Montrose Environmental Group, Inc. is focused on protecting air, water, and soil while enhancing environmental stewardship and economic development [1] Group 1: Financial Results Announcement - Montrose plans to release its first quarter 2025 results on May 7, 2025, after the close of trading on the New York Stock Exchange [2] - A conference call to discuss the first quarter 2025 results and forward outlook is scheduled for May 8, 2025, at 8:30 a.m. Eastern Time [2] Group 2: Conference Call Details - A live webcast of the conference call will be available on the Investors section of the Montrose website [3] - Participants can join the call by dialing 1-844-826-3035 in the U.S. or 1-412-317-5195 internationally [3] Group 3: Company Overview - Montrose is a leading environmental solutions company with approximately 3,400 employees across 120 locations worldwide [5] - The company offers a range of services including air measurement, regulatory compliance, environmental emergency response, and remediation [5]

Core Insights - Montrose Environmental Group has been selected by a public multinational energy company to support emissions monitoring, with a project valued at over $3 million for 2025, indicating sustained demand from key clients [1] - The company aims to help clients minimize greenhouse gas emissions and reduce costs, achieving approximately 60% reduction in reported emissions compared to default EPA factors [2] - Montrose has one of the largest air quality teams in North America, providing emissions solutions that benefit both the environment and industry, even amidst regulatory uncertainties [3] Company Overview - Montrose Environmental Group employs around 3,410 individuals across 120 locations globally, combining local knowledge with an integrated approach to address unique project requirements [4] - The company offers a wide range of services including air measurement, regulatory compliance, environmental emergency response, permitting, engineering, and remediation [4]

LITTLE ROCK, Ark., April 9, 2025 /PRNewswire/ -- Montrose Environmental Group, Inc. (the "Company", "Montrose" or "MEG") (NYSE: MEG) is on a mission to help protect the air we breathe, the water we drink, and the soil that feeds us, and aims to enhance environmental stewardship and economic development. The Company is providing an interim update to highlight continued strong business performance and affirm 2025 revenue, consolidated adjusted EBITDA, organic growth, and environmental response guidance. The c ...