Grant Armentor
Biography
Grant Armentor is an associate in the Energy, Power and Natural Resources Practice Group in the Houston office of Haynes Boone. His practice focuses on a broad range of energy transactional matters, including energy finance, mergers and acquisitions, acquisition and divestiture of oil and gas assets, gas gathering and other midstream agreements, commodity hedging transactions and upstream and midstream commercial contracts. Grant represents energy companies, financial institutions and private capital providers in connection with financing transactions, asset and equity acquisitions and dispositions and the negotiation of industry agreements related to the development, transportation and marketing of oil and natural gas.
Grant Armentor is an associate in the Energy, Power and Natural Resources Practice Group in the Houston office of Haynes Boone. His practice focuses on a broad range of energy transactional matters, including energy finance, mergers and acquisitions, acquisition and divestiture of oil and gas assets, gas gathering and other midstream agreements, commodity hedging transactions and upstream and midstream commercial contracts. Grant represents energy companies, financial institutions and private capital providers in connection with financing transactions, asset and equity acquisitions and dispositions and the negotiation of industry agreements related to the development, transportation and marketing of oil and natural gas.
- Represented a private exploration and production company in the negotiation of a $6 billion senior secured revolving credit facility to finance, in part, the acquisition and development of oil and gas properties.
- Represented multi-national exploration and production company in its acquisition of private Eagle Ford producer owning in excess of 600 producing wells.
- Represented the administrative agent and letter of credit issuer in the negotiation of a $500 million senior secured revolving credit facility to fund the acquisition and development of oil and gas properties located in the Permian Basin, other assets related to the exploration, production and development thereof and other general corporate purposes.
- Represented Earthstone Energy, Inc. in the financing for the company’s $1 billion acquisition of Novo Oil & Gas Holdings, LLC.
- Represented Ironwood Midstream Energy Partners III, LLC in securing a substantial equity commitment from Kayne Anderson Energy Infrastructure Fund, Inc. to assist with the development, acquisition and management of oil and natural gas midstream infrastructure across North America and in the concurrent acquisition of a strategic crude oil gathering system located in the Eagle Ford Shale, comprised of 50 miles of crude oil gathering pipelines with long-term, fee-based agreements for almost 50,000 dedicated acres.
- 8th Leadership Class – The Center for American and International Law: Institute for Energy Law (2025)
- “Purchase and Sale Agreements: What’s New?” – Dallas Bar Association Energy Law Section (2025)
- “Industry Trends in Energy Finance”, panelist, 76th Annual Energy Law Conference, The Center for American and International Law, Institute for Energy Law (2025)
- “Political and Economic Feasibility of Contracted American Liquefied Natural Gas for Energy Security in Poland and the Baltic States – Can the American Government Help?,” co-author, South Texas College of Law – Currents J. Int’l Econ. L. 8 (2022)
Education
J.D., South Texas College of Law Houston, 2021, summa cum laude, Order of Lytae
B.S., Finance, Louisiana State University, 2018
Admissions
Texas
Energy Finance Team Advises Teton Range on Refinancing of Senior Secured Credit Facility
April 21, 2025
Haynes Boone Advises Ironwood on Sale to Plains All American in $800M Transaction Bundle
January 09, 2025