Client Alerts
Houston’s economy has long been tied to the energy industry, and the energy industry has invested in the city’s growth. …
October 6, 2022
October 6, 2022 • 1-minute read
Partner
Capital Markets and Mergers & Acquisitions
After serving as the firm’s Chairman from 2012 to 2021, Mark maintains an active practice concentrated on mergers and acquisitions for public and private companies, capital markets, and corporate governance.
In 2014, Mark was named “Lawyer of the Year” Corporate Law–Houston by Best Lawyers, (The Best Lawyers in America, 2014). Clients interviewed for Chambers USA say “Mark’s understanding of the legal landscape and the players in it is a vital asset to our company” and note “[he’s] an excellent lawyer who is great with client relationships” (Chambers USA, 2024). Mark has also been named to the NACD Directorship 100: Governance Professionals, a list of the most influential people in the boardroom community (2015–2019).
Mark has extensive experience in public offerings of equity securities, as well as public and private debt securities. His clients include numerous public and private companies, major investment banks, and venture capital firms in a diverse range of industries, including energy and oilfield services, gas marketing, manufacturing, insurance, medical technology, and shipping. Mark also has experience advising boards of directors at Fortune 100 companies. Mark has represented clients in over 150 domestic and cross-border debt and equity offerings since 2008.
Mark is past director of the State Bar of Texas, past president of the Houston Bar Association, and past chair of the Houston Bar Foundation. He is active Chair of the Executive Committee of the Houston Museum of Natural Science, a member of the Board of Visitors of MD Anderson Cancer Center, a director of the Houston Livestock Show & Rodeo, and serves on the Board of the Greater Houston Partnership.
Frank’s International in its merger with Expro Group
Energy XXI in its $2.3 billion acquisition of EPL Oil & Gas Inc., creating the largest publicly traded independent oil and gas producer on the Gulf of Mexico Shelf
Nuevo Midstream in the $1.5 billion sale of the company to Western Gas Partners
Underwriters to 8point3 Energy Partners LP in its $420 million initial public offering of common units
Underwriters to Cheniere Energy Partners LP Holdings, LLC in its $720 million initial public offering of common units
Concho Resources in its $1.65 billion acquisition of the oil and gas assets of Marbob Energy Corporation and affiliated entities
Crimson Exploration in its $800 million merger with Contango Oil & Gas
FMC Technologies in its $281 million acquisition of a 55% interest in Schilling Robotics
FMC Technologies in the $285 million acquisition of Pure Energy Services, a publicly traded Calgary-based provider of frac flowback services and wireline services
Riata Energy in its $1.5 billion acquisition of NEG Oil & Gas
Concho Resources in its $1 billion acquisition of Three Rivers Operating Company
Permian Mud Service in the $2.3 billion sale of Champion Technologies, a global energy specialty products and services company, to Ecolab
Frank’s International in its acquisition of Timco Services, a private company that provides tubular running services and rental equipment onshore in the southern United States and offshore in the Gulf of Mexico
U.S. counsel to Korean National Oil Corporation in its $4.1 billion acquisition of Harvest Energy Trust, a Canada-based oil and gas company listed on the Toronto Stock Exchange and the New York Stock Exchange
Frank’s International N.V. in its $759 million initial public offering of common stock
Pacific Drilling S.A. in its $57 million initial public offering of common stock
C&J Energy Services, Inc. in its $384 million initial public offering of common stock
Oasis Petroleum Inc. in its $676 million initial public offering of common stock
Underwriters to Crimson Exploration Inc. in its $100 million initial public offering of common stock
SandRidge Energy, Inc. in its $842 million initial public offering of common stock
Concho Resources Inc. in its $276 million initial public offering of common stock
Underwriters to GeoMet, Inc. in its $58 million initial public offering of common stock
Underwriters to Hercules Offshore, Inc. in its $212 million initial public offering of common stock
Republic Companies Group, Inc. in its $84 million initial public offering of common stock
Superior Well Services, Inc. in its $83 million initial public offerings of common stock
Underwriters to Bill Barrett Corporation in its $373 million initial public offering of common stock
Underwriters to Hornbeck Offshore Services, Inc. in its $80 million initial public offering of common stock
Underwriters to FMC Technologies, Inc. in its $221 million initial public offering of common stock
Golar LNG Partners, LP in its $310 million initial public offering of common units
Western Gas Partners, LP in its combined $1.1 billion public offerings of common units
Underwriters to Cheniere Energy Partners LP Holdings, LLC in its combined $950 million public offerings of common units
Gastar Exploration, Inc. in its $106 million public offering of common stock
Western Gas Equity Partners, LP in its $346 million public offering of common units
Concho Resources, Inc. in its $964 million public offering of common stock
Underwriters to Baytex Energy Corp. in its $1.4 billion public offering of common stock
Chevron Phillips Chemical Company LLC in its $1.4 billion investment grade offering of senior notes
Underwriters to CONSOL Energy Inc. in its combined $900 million offerings of senior notes
Underwriters to Cheniere Energy, Inc. in its $625 million offering of convertible senior notes
LyondellBasell Industries N.V. in its $1 billion investment grade offering of senior notes
Anadarko Petroleum Corporation in its $1.25 billion investment grade offering of senior notes
Energy XXI Gulf Coast, Inc. in its combined $1.15 billion offerings of senior notes
Underwriters to Hercules Offshore, Inc. in its combined $700 offerings of senior notes
Western Gas Partners, LP in its $500 million offering of senior notes
Energy XXI Gulf Coast, Inc. in its $400 million offering of convertible senior notes
Concho Resources, Inc. in its $850 million sale of senior notes
Gastar Exploration Inc. in its $200 million offering of senior secured notes
Underwriters to Hornbeck Offshore Services, Inc. in its combined $825 million offerings of senior notes
Underwriters to Swift Energy Company in its $150 million offering of senior notes
Underwriters to Bristow Group Inc. in its $450 million offering of senior notes
FMC Technologies, Inc. in its $800 million offering of senior notes
Underwriters to Southwestern Energy Company in its $1 billion offering of senior notes
Endeavour International Corporation in its $500 million offering of first and second priority notes
Evercore Partners, as financial advisor to Kinder Morgan in the $76 billion buyout of El Paso Corporation
Goldman Sachs, as financial advisor to Apache Corporation in the $2.5 billion merger with Mariner Energy
Greenhill & Co., as financial advisor to BJ Services in connection with the $5.5 billion merger with Baker Hughes
Gastar Exploration in its shareholder activist fight against Global Undervalued Securities Master Fund LP
Goldman Sachs, as financial advisor to Schlumberger in the $11 billion acquisition of Smith International
Miller Energy Resources, Inc. against shareholder activists Lone Star Value Management LLC and Bristol Capital Management
Endeavour International Corporation against shareholder activist Talisman Group Investments
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Client Alerts
Houston’s economy has long been tied to the energy industry, and the energy industry has invested in the city’s growth. …
October 6, 2022
October 6, 2022 • 1-minute read
Awards & Rankings
Vinson & Elkins announced today that it achieved 20 Band 1 rankings in Chambers USA 2026: Nationwide: Energy Transition; Energy: …
June 4, 2026
June 4, 2026 • 3-minute read
Awards & Rankings
Chambers Global, announced today, recognizes Vinson & Elkins in 27 practice categories, including new rankings for Construction in the UAE, …
February 12, 2026
February 12, 2026 • 2-minute read
Awards & Rankings
Lawdragon Names 10 Vinson & Elkins Lawyers as Top Dealmakers in America
Lawdragon has named 10 Vinson & Elkins lawyers among the honorees in its 2026 Lawdragon 500 Leading Dealmakers in America guide.
November 3, 2025
November 3, 2025 • 1-minute read
Deals & Cases
Dynamix Corporation III Announces Pricing of $175 Million Initial Public Offering
Vinson & Elkins LLP advised Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC, as representative of the underwriters, in connection with an initial public offering of 20,125,000 units by Dynamix Corporation III (NASDAQ: DNMXU).
October 31, 2025
October 31, 2025 • 1-minute read
Awards & Rankings
The Best Lawyers in America (BL Rankings, LLC) has named 125 Vinson & Elkins lawyers in its “Best Lawyers” category in the 2026 edition. Additionally, 76 Vinson & Elkins attorneys have been named in the “Ones to Watch” category, which recognizes lawyers with 5–10 years’ experience. Some individuals are listed in more than one practice area, giving the firm a total of 305 rankings.
August 21, 2025
August 21, 2025 • 3-minute read
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