Haynes and Boone is an international corporate law firm with offices in Texas, New York, California, Charlotte, Chicago, Denver, Washington, D.C., London, Mexico City and Shanghai, providing a full spectrum of legal services in energy, technology, financial services and private equity. With more than 600 lawyers, Haynes and Boone is ranked among the largest U.S.-based firms by The National Law Journal, The American Lawyer and The Lawyer. It also was recognized across the board for excellence in the BTI Consulting Group's 2020 "A-Team" report, which identifies the law firms that in-house counsel commend for providing superior client service.

Lawyers Worldwide: 600


Areas of Practice

Representative Clients


ESG Decision-Making —What are the alternatives?

ESG—environmental, social, and [corporate] governance—is the focus of socially responsible investing, reflecting the notion that corporations should serve the interests of not only their shareholders, but of all their stakeholders. This paper suggests NEPA’s EIS process provides a possible go-by for corporate decision-makers to use in ensuring that their ESG policies consider the big picture--the cons as well as the pros of their ESG policies. The NEPA process begins when an agency proposes to take action...

The impact of recent Russian sanctions on European lenders and English law governed financings

 Economic sanctions The sanctions imposed by the UK, European Union and US following the recent invasion of Ukraine by Russia target the Russian economy. Whilst Russia is the largest country in the world, in terms of the global economy it only made up 3.11% of Global GDP in 2020. The sanctions imposed however will still have wide ranging impacts on all areas of the global market, and can already be seen in dramatically rising energy prices...

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Haynes Boone Represents Earthstone Energy in Bighorn Permian Acquisition

Haynes and Boone, LLP is serving as counsel to Earthstone Energy, Inc. in its acquisition of the assets of Midland Basin operator Bighorn Permian Resources, LLC in a cash-and-stock transaction worth approximately $860 million. This transaction comes on the heels of Haynes Boone’s representation of Earthstone in its recently announced $600 million acquisition of assets from another Permian Basin operator in Chisholm Energy Holdings LLC. The Bighorn Permian deal was announced Jan. 31, 2022, and is expected to close in the second quarter of 2022...

Haynes Boone Represents Morgan Stanley in Connection with Clean Energy Bond Issuance of Nearly $1.5 Billion

A Haynes and Boone, LLP team led by attorneys Chad Mills and John Montgomery represented Morgan Stanley Energy Structuring, L.L.C. (“MSES”) as the energy supplier and Morgan Stanley in its role as the guarantor of MSES’s obligations in connection with California's first-ever municipal bond-financed clean energy prepayment transaction. The Clean Energy Project Revenue Bonds (“the Bonds”) were issued by California Community Choice Financing Authority (CCCFA) for the benefit of East Bay Community Energy and Silicon Valley Clean Energy, two California community choice aggregators. The bond issuance on Sept 23, 2021 generated nearly $1...

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Haynes and Boone Blogs

Haynes and Boone Blogs includes the Firm Blog, IP Beacon: Patent Law Review, Practical Benefits Lawyer, Texas Insurance Academy and The Dec Sheet-Insurance Law