Core Insights - Montrose Environmental Group, Inc. is dedicated to protecting air, water, and soil while promoting environmental stewardship and economic development [1] - The company will present at the William Blair 45th Annual Growth Stock Conference on June 4, 2025, at 5:00 p.m. Eastern Time, with a live audio webcast available [1] - Montrose will provide a copy of its presentation on its website prior to the conference [1] Company Overview - Montrose is a leading environmental solutions company with approximately 3,400 employees across 120 locations globally [2] - The company offers a range of services including air measurement, laboratory services, regulatory compliance, environmental emergency response, permitting, engineering, and remediation [2] - Montrose combines local knowledge with an integrated approach to effectively meet the unique requirements of each project [2]

Group 1: Investor Relations Activity Overview - The investor relations activity was an earnings briefing held on May 15, 2025, from 15:00 to 17:00 at the Shanghai Securities News Roadshow Center [3] - Participants included investors engaging in an online exchange, with key company representatives present: Chairman and President Wei Yantian, Vice President and CFO Liu Ling, and Board Secretary Lin Zhimei [3] Group 2: Company Transformation and Technology Development - In 2024, the company initiated a major technology project in Chongqing focused on smart sanitation systems, collaborating with Chongqing University of Posts and Telecommunications [4] - The project aims to develop smart cleaning technologies and a cloud control platform, enhancing digital management in sanitation operations [4] Group 3: Investment in Resource Utilization Project - The company has invested CNY 110 million in a resource utilization project in Xinjiang, with a construction timeline of 1-2 years, currently progressing as planned [5] - As of now, the project has secured land and environmental approvals, and construction work has commenced [5] Group 4: Accounts Receivable Management - As of December 31, 2024, the company reported accounts receivable of CNY 638 million, with aging distribution: CNY 99 million (within 3 months), CNY 145 million (4-12 months), CNY 124 million (1-2 years), CNY 89 million (2-3 years), and CNY 180 million (over 3 years) [6] - Bad debt provisions amount to CNY 172 million, representing 27.03% of total accounts receivable, with specific provisions detailed for various aging categories [6] Group 5: Debt Collection Efforts - The company is actively managing accounts receivable through a structured approach, implementing a "four-category" management system and legal measures for debt recovery [7] - The government has introduced regulations to facilitate the payment of debts owed to small and medium enterprises, which the company is leveraging to enhance its collection efforts [7]

Financial Data and Key Metrics Changes - The company achieved record first-quarter 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 adjusted 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 - In the 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] - The Measurement and Analysis segment saw revenue increase by 29.8% to $59 million, with adjusted EBITDA margin improving to 23.3% [24] - The Remediation and Reuse segment's revenue increased by 28.2% to $65.7 million, although adjusted EBITDA margin declined to 9% [25] Market Data and Key Metrics Changes - The company reported strong demand across all geographies, particularly in the U.S. where private sector clients are increasing industrial activity [9] - International operations thrived, with a recent award from a major public mining company in Australia [12] 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 [8] - The full-year 2025 EBITDA guidance was raised to a range of $103 million to $110 million, reflecting confidence in continued growth [9] Management's Comments on Operating Environment and Future Outlook - Management expressed optimism about sustained demand despite regulatory changes, noting that clients are maintaining their course [34] - The company expects to see continued growth in the Remediation and Reuse segment, with margins at or above previous levels [62] Other Important Information - The company redeemed $60 million of Series A-two Preferred stock and plans to redeem the remaining $62 million in 2025 [15] - A stock repurchase program of up to $40 million was approved by the Board [15] Q&A Session Summary Question: Discussion on environmental deregulation and its impact - Management highlighted that while there are proposed deregulatory actions, the legal complexities make quick changes unlikely, and clients are largely staying the course [34] Question: Insights on the Measurement and Analysis business performance - Management noted strong demand across multiple business lines, contributing to the segment's robust performance [42] Question: Clarification on margin expansion drivers - Management indicated that sustained demand and improved operating effectiveness across all segments are key drivers for projected margin expansion [49] Question: Impact of potential tariff changes on business - Management expects minimal impact from tariffs, with clients remaining constructive in discussions regarding pricing adjustments [50] Question: Performance of PFAS-related revenue - Management confirmed that PFAS-related revenue continues to grow and is additive to organic growth, supported by regulatory clarity [60] Question: Project delays due to macro uncertainty - Management stated that macroeconomic factors have not significantly impacted project timelines, maintaining optimism for growth in the Remediation and Reuse segment [62]

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 ...

Lassila & Tikanoja plc Stock Exhange Release 6 May, 2025 at 3.40 pm LEI: 743700Z9Z54VGHZA0028 Notification type: INITIAL NOTIFICATION Reference number: 106984/4/4 Transaction date: 2025-05-05 Outside a trading venue Instrument type: SHARE Lassila & Tikanoja Oyj - Managers' Transactions Person subject to the notification requirement Name: Anna-Maria Tuominen-Reini Position: Member of the Board/Deputy member Issuer: Lassila & Tikanoja Oyj Aggregated transactions (1): Volume: 1486 Volume weighted average price ...

Lassila & Tikanoja plcStock Exhange Release6 May, 2025 at 3.20 pm Lassila & Tikanoja Oyj - Managers' Transactions ____________________________________________ Person subject to the notification requirement Name: Teemu Kangas-Kärki Position: Member of the Board/Deputy member Issuer: Lassila & Tikanoja Oyj LEI: 743700Z9Z54VGHZA0028 Notification type: INITIAL NOTIFICATION Reference number: 106972/5/5 ____________________________________________ Transaction date: 2025-05-05 Outside a trading venue Instrument t ...

Lassila & Tikanoja plcStock Exhange Release6 May, 2025 at 3.10 pm Lassila & Tikanoja Oyj - Managers' Transactions ____________________________________________ Person subject to the notification requirement Name: Sakari Lassila Position: Member of the Board/Deputy member Issuer: Lassila & Tikanoja Oyj LEI: 743700Z9Z54VGHZA0028 Notification type: INITIAL NOTIFICATION Reference number: 106991/4/4 ____________________________________________ Transaction date: 2025-05-05 Outside a trading venue Instrument type: ...

Lassila & Tikanoja plcStock Exhange Release6 May, 2025 at 3.05 pm Lassila & Tikanoja Oyj - Managers' Transactions ____________________________________________ Person subject to the notification requirement Name: Jukka Leinonen Position: Member of the Board/Deputy member Issuer: Lassila & Tikanoja Oyj LEI: 743700Z9Z54VGHZA0028 Notification type: INITIAL NOTIFICATION Reference number: 106994/4/4 ____________________________________________ Transaction date: 2025-05-05 Outside a trading venue Instrument type: ...

Lassila & Tikanoja plc Stock exchange release 6 May, 2025 at 3.00 pm Transfer of Lassila & Tikanoja's own shares Lassila & Tikanoja is a service company that is putting the circular economy into practice. Together with our customers, we keep materials, manufacturing sites and properties in productive use for as long as possible and we enhance the use of raw materials and energy. This is to create more value with the circular economy for our customers, personnel and society in a broader sense. Achieving this ...