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Vinson & Elkins Represents Mitsubishi Corporation in Acquisition of Haynesville Shale Gas Business in Louisiana and Texas

Deals & Cases

January 16, 2026 • 1-minute read

Vinson & Elkins Represented Mitsubishi Corporation (“MC) in an agreement to acquire all equity interests in Aethon III LLC, Aethon United LP, and related entities and interests (collectively “Aethon) for a total equity investment of approximately USD $5.2 billion. The acquisition is expected to close in the first quarter of Japan’s fiscal year (April to June of 2026), subject to customary regulatory approvals. The transaction marks MC’s entry into the U.S. shale gas business across the value chain, from upstream ownership through domestic sales and export of produced gas.

The Vinson & Elkins team was led by Partners Shay Kuperman and Nettie Downs, Counsel David Latham, and Senior Associate Luke Strieber, with assistance from Associates Katherine Harclerode, Hana Arriaga, and Reese Glusing. Also advising were Partner Todd Way, Senior Associate Dan Henderson, and Associate Kylan Kinkade; Partner Suzanne Clevenger, Counsel Mike Malenfant, Associates Max Aguirre and Carrigan English; Partner Sean Becker, Senior Associate Peter Goetschel, and Associate Julia Burns; Partner David D’Alessandro, Counsel Missy Spohn, and Associate Madeline O’Neil; Counsel Rajesh Patel and Senior Associate Haley Titcomb; Counsel Ken Adler and Associate Karley Jones; Partner Matt Dobbins and Senior Associate Kelly Rondinelli; Partner Tzvi Werzberger and Senior Associate Kim Dalrymple; Partner Kara Kuritz and Hill Wellford, Counsel Ryan Will and Associate Adam Thomas; Partner Joyce Adetutu and Fry Wernick, Counsel Brian Howard and Associate Katherine Galvin; Partner Randall Johnston and Senior Associate Frankie Velez; Partner Sarah Mitchell, Senior Associate Victoria Bahrami-Negad, and Associate Leah Powers and Devon Espinoza-Fontenot; Partner Matt Stammel and Associate Winnie Anderson.

About Vinson & Elkins
For more than a century, Vinson & Elkins has provided outstanding client service across important industries that drive the global economy. Built on a strong culture of collaboration across 14 offices worldwide, V&E lawyers are committed to excellence, offering clients decades of legal experience in handling transactions, investments, projects and disputes across the globe. Learn more by visiting www.velaw.com or connect with us on LinkedIn.

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