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Mammoth Energy Services, Inc.

TUSK

Energy

2

exclusion reasons

1 theme

Fossil Fuels (2)
TUSK Energy Current as of March 2026

This page is part of our public exclusion list — a transparency tool that shows which companies we screen out and why. It is not investment advice, and it is not an accusation. But it is subject to change as our understanding of the facts evolves.

General Fossil Fuels
Since Jul 28, 2021

Mammoth Energy Services, Inc. is an integrated energy services company whose core business is providing products and services to enable the exploration and development of oil and natural gas. Its operations span rental equipment, infrastructure services, and well completion services, all of which are integral to the upstream fossil fuel sector. The company’s financial performance is directly tied to oil and gas industry activity, as evidenced by reports of significant revenue increases driven by energy sector demand.

While the company has divested certain non-core assets, such as an engineering business, its primary operations remain focused on servicing fossil fuel extraction. Public comps and industry analyses consistently categorize Mammoth alongside other oilfield service providers like Nine Energy Service and Ranger Energy Services. There is no evidence in the provided materials of a strategic transition away from fossil fuels or of material revenue derived from renewable energy services. The company’s services enable and are dependent on ongoing oil and gas exploration and production.

Oil & Gas Extraction
Since Jul 28, 2021

Mammoth Energy Services, Inc. operates as an integrated oilfield services company, providing a portfolio of specialized equipment and labor to companies engaged in the exploration and development of oil and natural gas properties. Its operations are divided into four segments: well completion services, infrastructure services, natural sand proppant services, and drilling services. This business model is fundamentally tied to and enables the upstream fossil fuel extraction process, from drilling to hydraulic fracturing.

The company’s services are marketed to exploration and production companies primarily in the United States, with additional operations in Canada and internationally. Its core activities include pressure pumping for well completions, the sale and transportation of frac sand, and the rental of specialized equipment for drilling and production sites. Mammoth’s integrated model means its revenue is directly derived from and contingent upon ongoing fossil fuel development.

Research Sources 8 organizations

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Companies appear on our exclusion list based on our investment judgment — not because they've done anything illegal. This is a difference of values and opinion, not an accusation of wrongdoing. Exclusion does not constitute a recommendation against investing in any company, and absence from the list does not constitute a recommendation to invest.

This information is provided for educational and transparency purposes only and should not be relied upon as investment advice. Data is drawn from independent watchdogs, NGOs, government registries, and Ethical Capital's ongoing research — see Research Sources for the full list.

Ethical Capital LLC is a state-registered investment adviser in Utah (CRD #316032). Registration does not imply a certain level of skill or training.