Marianne Standley is an associate in the Houston office of Latham & Watkins and a member of the Tax Department.

Ms. Standley regularly advises corporations, partnerships, private equity firms, and major financial institutions on the tax aspects of public and private mergers and acquisitions, securities offerings, bank financings, and restructurings.

In her pro bono practice, Ms. Standley focuses on helping nonprofit organizations secure 501(c)(3) tax-exempt status and assisting refugees and victims of labor trafficking in obtaining permanent residency or citizenship in the US. She also serves as a member of the Houston Pro Bono Committee.

Ms. Standley offered tax advice with respect to the following transactions:


  • Centennial Resource Development - US$7.0 billion merger of equals between Centennial Resource Development and Colgate Energy Partners III 
  • Landmark Dividend - US$851 million acquisition of Landmark Infrastructure Partners
  • Diamondback Energy - US$745 million sale of Williston Basin assets to Oasis Petroleum
  • UGI Corporation - US$540 million acquisition of Mountaineer Gas Company
  • CNX Resources - US$357 million take-private transaction 

Capital Markets

  • Enterprise Products Partners  – Tack-on notes offering of US$1 billion and US$250 million notes
  • Energy Transfer - US$900 million offering of preferred units
  • Sunoco - US$800 million high-yield notes offering and concurrent tender offer
  • Pro Frac IPO – Representing underwriters 
  • Project Plum SPAC IPO – Representing underwriters
  • Flame Acquisition Corp. SPAC IPO
  • Hawks Acquisition Corp. SPAC IPO

Banking and Restructuring

  • Representation of Hi-Crush, a mining, processing, and distribution provider of silica sand proppant, a key component in the hydraulic fracturing of oil and gas wells, in its chapter 11 case involving a restructuring of nearly US$1.0 billion in debt and other unsecured claims. Hi-Crush successfully completed its restructuring in October 2020
  • Representation of Scotiabank, as reserve-based lending agent and debtor-in-possession agent, in connection with the chapter 11 bankruptcy proceedings for Gulfport Energy, a natural gas producer
  • Revolving credit facility of US$400 million and subsequent amendments up to US$1.25 billion for Summit Midstream, an operator of midstream energy infrastructure assets, primarily shale formations, in North America
  • US$950 million term loan and revolving facility for Genesis Energy, a company that owns and operates crude oil gathering, marketing and pipeline operations, to refinance existing debt

Private Equity

  • Representation of private equity firm EnCap Flatrock Midstream in partnership with Manchester Energy, to develop a large scale, diversified midstream business
  • Representation of Inspiration Mobility, the first one-stop electric vehicle solutions company, in securing US$200 million capital commitment from ArcLight Energy Partners Fund VII and entering into EV fleet lease partnership with ridehail innovator Revel

Bar Qualification

  • Texas


  • JD, University of Houston Law Center
    summa cum laude, Order of the Coif
  • M.Ed., Harvard University
  • BA, Wellesley College
    magna cum laude

Languages Spoken

  • English
  • French
  • Chinese (Mandarin)