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Montauk Renewables, Inc. (MNTK) is a non-energy raw materials company in the oil-based and renewable fuel production industry, based in Pittsburgh, United States, with about 189 full-time employees.
It reported revenue of $176.38 million for fiscal year 2025, up 0.4% from fiscal year 2024, and net income of $1.75 million. Its largest business segment, Renewable Natural Gas, brought in 88% of segment revenue in fiscal year 2025. Its market capitalization was $360.12 million as of October 9, 2026.
Figures from company filings and market data; latest fiscal year ended December 31, 2025; market data as of October 9, 2026.
, a renewable energy company, engages in recovery and processing of biogas from landfills and other non-fossil fuel sources. It operates in two segments, Renewable Natural Gas and Renewable Electricity Generation. The company develops, owns, and operates renewable natural gas (RNG) and renewable electricity projects.
Montauk Renewables reported $176.38 million in revenue for fiscal year 2025, up 0.4% from $175.74 million in fiscal year 2024.
Renewable Natural Gas, with $155.74 million or 88% of segment revenue in fiscal year 2025. Next: Renewable Electricity Generation (10%) and Corporate (2%).
$360.12 million as of October 9, 2026.
Listed companies of a similar size in the same industry (oil-based and renewable fuel production) include REX American Resources Corporation (REX), Green Plains Inc. (GPRE), Westlake Chemical Partners LP (WLKP), Gevo, Inc. (GEVO).