Onterris, Inc.
Montrose Environmental Solutions, Inc. (NYSE: MEG) operates as a comprehensive environmental services provider serving clients across the United States, Canada, and Australia. The company's website is www.montrose-env.com. From the company’s description.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What Onterris, Inc. does
In the company’s own words
Montrose Environmental Solutions, Inc. (NYSE: MEG) operates as a comprehensive environmental services provider serving clients across the United States, Canada, and Australia. The company's website is www.montrose-env.com.
Founded in 2012, Montrose has established itself as a leading platform in the fragmented environmental services industry by offering an integrated suite of solutions addressing the full lifecycle of environmental needs. The company operates through three primary business segments: Assessment, Permitting and Response, which generated approximately 37.0% of revenue; Measurement and Analysis, contributing 29.6% of revenue; and Remediation and Reuse, representing 33.4% of revenue.
The Assessment, Permitting and Response segment provides scientific advisory services, environmental emergency response, toxicology consulting, and permitting support for current operations, facility upgrades, and decommissioning projects. The Measurement and Analysis segment operates as one of North America's largest providers of environmental testing and laboratory services, offering air, water, and soil analysis with advanced capabilities including optical gas imaging technology and ultra-trace analysis. The Remediation and Reuse segment delivers engineering, design, and implementation services for contaminated water treatment and soil remediation using proprietary technologies and licensed intellectual property.
As of December 31, 2025, Montrose employed approximately 3,500 personnel, with roughly 76% based in the United States, 21% in Canada, and 3% in Australia. The company serves a diverse clientele across multiple sectors including oil and gas, utilities, government entities, industrial manufacturing, chemicals, transportation, renewable energy, and telecommunications, with approximately 96% of clients from the prior year returning as repeat customers.
Montrose's competitive advantages include its vertically integrated platform, proprietary technologies with 31 awarded patents, comprehensive geographic reach, and technical expertise across multiple environmental disciplines. The company has executed over 70 acquisitions since inception, with six acquisitions completed in 2024 across its three segments. Innovation remains central to the company's strategy, with ongoing investments in research and development focused on emissions measurement, contaminant detection, water treatment technologies, and PFAS remediation solutions.
Company details
- Sector
- Industrials
- Industry
- Professional Services
- Headquarters
- IRVINE, CA
- Fiscal year end
- December
- CIK
- 1643615
- SIC
- 8742
Financial performance, year by year
Fiscal 2020–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns Onterris, Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · Onterris, Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
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