Adri Langemeier

Adri Langemeier is an associate in the Houston office of Gibson Dunn and a member of the firm's Mergers and Acquisitions and Private Equity practice groups. Adri advises both public and private companies, private equity sponsors and their portfolio companies in mergers and acquisitions, dispositions, private equity investments and other strategic transactions. She has significant experience advising public companies in complex domestic and cross-border M&A transactions across a variety of industries with a particular focus on the energy, manufacturing and technology sectors. She also assists clients on an ongoing basis with general corporate matters, including Exchange Act reporting and corporate governance.

Adri has been recognized by Best Lawyers: Ones to Watch® in America for Mergers and Acquisitions Law (2026). She has also been named to the 2025 Texas Rising Stars list by Super Lawyers®.

Representative Experience

• Aris Water Solutions (NYSE: ARIS) in its merger with Western Midstream Partners for cash and units consideration in a transaction valued at approximately $2.0 billion
• Technip Energies NV (XPAR: TE) in its pending $556 million acquisition of Ecovyst Inc.’s Advanced Materials & Catalysts business
• Western Midstream Partners, LP (NASDAQ: WES) in its $885 million acquisition of Meritage Midstream Services II, LLC
• Dril-Quip, Inc. (NYSE: INVX) in its all-stock combination with Innovex Downhole Solutions, Inc.
• KBR, Inc. (NYSE: KBR) in its $737 million acquisition of LinQuest Corporation
• ProFrac Holdings Corp (NYSE: ACDC) in its acquisition of all the equity of an oilfield service company from an undisclosed private seller
• Patterson-UTI Energy, Inc. (NASDAQ: PTEN) in its acquisition of Ulterra Drilling Technologies, L.P.
• Forum Energy Technologies, Inc. (NYSE: FET) in its acquisition of Variperm Energy Services
• Devon Energy (NYSE: DVN) as a lead investor in Fervo Energy’s $244 million Series D funding round
• $7.1 billion take private acquisition of Syneos Health, Inc. by a private investment consortium composed of Elliott Investment Management L.P., Patient Square Capital and Veritas Capital
• Quidel Corporation (NASDAQ: QDEL) in its $6.0 billion business combination with UK-based, Ortho Clinical Diagnostics
• NetApp, Inc. (NASDAQ: NTAP) in its $498 million acquisition of Instaclustr
• Audax Management Company in connection with portfolio companies and add-on transactions
• Constellation Wealth Capital in connection with preferred and minority equity investments, including investments in Merit Financial Advisors, a wealth management firm with approximately $20 billion under management
• Sammons Financial Group in its purchase of a majority stake in NorthRock Partners, a wealth management firm based in Minneapolis with approximately $5 billion under management

Adri received her law degree from the University of Houston Law Center, magna cum laude, where she was the founder of the First Generation Law Students organization and host of the Houston Law Review podcast, Emphasis Added. She is a volunteer with Momentum Education, a local non-profit, where she connects first-generation, low-income students to resources and opportunities to help them achieve their education and career goals.

She is admitted to practice law in the State of Texas.

Capabilities

• Mergers and Acquisitions
• Emerging Companies / Venture Capital
• Energy and Infrastructure
• Oil and Gas
• Private Equity
• Securities Regulation and Corporate Governance

Credentials

Education:

• University of Houston - 2021 Juris Doctor
• Sam Houston State University - 2017 Master of Arts
• Liberty University - 2014 Bachelor of Science

Admissions:

• Texas Bar