
Tax
Energy
Mark Dundon, P.C., is a distinguished tax partner at Kirkland & Ellis in Houston. Renowned for his expertise in complex energy and infrastructure transactions, Mark advises on the tax aspects of mergers, acquisitions, and financings for private equity sponsors and Fortune 500 companies. His practice spans the power, renewables, and midstream sectors. Recognized by Chambers USA in Texas Tax rankings since 2021, Mark is praised for his deep insights and effective communication. He frequently speaks at industry conferences, sharing his knowledge on tax law developments.
Energy and Infrastructure
Mergers and Acquisitions
Capital Markets and Initial Public Offerings
Corporate Finance and Joint Ventures


- Kirkland & Ellis advised Riley Exploration Permian, Inc. (NYSE American: REPX) and its wholly owned subsidiary Riley Exploration – Permian, LLC on a purchase and sale agreement with Targa Northern Delaware LLC. - Under the agreement, Riley Permian sold 100% of the membership interests in Dovetail Midstream, LLC (a wholly owned subsidiary) to Targa for approximately $111 million in cash, subject to customary purchase price adjustments. - Dovetail’s assets primarily comprise natural gas gathering infrastructure supporting production in Eddy County, New Mexico; the matter was handled by a cross-practice Kirkland team.
Dec 18 2025
111M
M&A

Partner
2017 – Unknown
Associate
2012 – 2017
Associate
2008 – 2012

- HG Energy II, LLC sold the stake/assets to Antero Resources Corporation and Antero Midstream Corporation as part of a M&A transaction on not available. - Deal value was 3900000000 (source: Extracted) Sector: Energy; Location: USA. - On the seller side, not available advised, led by David Castro, Lindsey Jaquillard, Jonathan Strom, Rizwan Popatia, Lyle Paul, Stephen Noh, Jack Chadderdon, Nicole Faria, Michael Wells, Paul Tanaka, Max Anderson, Damien Lyster, Vito Whitmore, Brett Ackerman, Mona Kwasnik, Mark Dundon, Christina King, William Bos, Chad Davis, Michelle Williamson, Kirby Swartz, Michael Rigdon, Robbie Dillard, Jeff Ayer, Matthew Wheatley, Miguel Suarez Medina, Andrew Schilling, Christie Alcala, Erin Davey, Maureen O.
Dec 08 2025
4B
M&A
Feb 18

1 min
Law Clerk
2007 – 2008