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Vinson & Elkins LLP

1001 FANNIN STREET, SUITE 2500, HOUSTON, TX 77002-6760, USA
Work +1 713 758 2222
Fax +1 713 758 2346
Austin, Beijing, Dallas, Dubai, Hong Kong, Houston and 10 more

Mark Kelly

Work +1 713 758 4592
Vinson & Elkins LLP

Work Department

Capital Markets


Mark's principal areas of practice are mergers and acquisitions, initial public offerings, public financings, and private placements. His clients include public companies; venture capital funds; start-up companies; manufacturing companies; medical technology companies; oil field service companies; gas marketing, exploration and production companies; and investment banking firms. He has represented clients listed on the NYSE, ASE, and NASDAQ National Market.

Mark has extensive experience in public offerings of equity securities, and public and private debt securities. He also acts as general counsel for several public and private corporations. He has assisted in structuring and negotiating stock and asset acquisitions, and in negotiating bank financings. Mark also has extensive experience in merger and acquisition transactions, representing clients in transactions totaling over $6 billion in the last two years. He has represented clients in over 100 domestic and cross-border debt and equity offerings since 2004.

Mark has held numerous positions with the firm, serves as a member of V&E’s Management Committee and is Chairman of the firm.


  • Director, State Bar of Texas
  • Past President, Houston Bar Association
  • Fellow: Houston Bar Foundation; Texas Bar Foundation
  • Member: American, Texas, and Houston Bar Associations; Vice Chairman, Parade Committee, Houston Livestock Show and Rodeo; Board of Trustees and Executive Committee Member, Houston Museum of Natural Science; City of Houston's READ Commission; Leadership Houston, Class VIII
  • Past President, Houston Young Lawyers Association
  • Past Director, Texas Young Lawyers Association
  • Chair, Houston Volunteer Lawyers Program
  • Past Chair: Houston Bar Foundation, Houston Lawyer Referral Service; Professionalism Committee, Hunger Relief Committee, and Local Affiliates Committee, Texas Young Lawyers Association; Houston Young Lawyers Foundation
  • Past Vice Chair, Center for Hearing and Speech


Mark graduated from Texas A&M University, B.B.A. in 1978, and Southern Methodist University, J.D. in 1981 (Fraternities: Phi Eta Sigma, Beta Alpha Psi, Beta Gamma Sigma, Phi Kappa Phi, and Phi Delta Phi). Admitted to Texas Bar in 1981.

United States: Finance

Capital markets: debt

Within: Capital markets: debt

Vinson & Elkins LLP, well known for its ‘specialized offering in the energy space’, packs a punch on the issuer side, where it is a popular choice for oil and gas companies looking to access the debt markets. Other key industry sectors include power, transport and financial services. Matthew Strock and David Oelman co-lead a team that also includes chairman Mark Kelly, Douglas McWilliams and Richmond-based Daniel LeBey. Highlights included advising Occidental Petroleum on its $1bn offering of senior notes, and also advising Citigroup as lead underwriter to Enterprise Products Partners LP on its $3bn notes offering. Other representative clients include Southwest Airlines, TPG RE Finance Trust and Western Gas Partners. All named lawyers are based in Houston, unless otherwise stated.

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Capital markets: equity offerings

Within: Capital markets: equity offerings

A dominant player in energy deals’, the consensus is that Vinson & Elkins LLP ‘owns the oil and gas space’. The practice, which is particularly active on behalf of issuers, also garners a significant share of REITs, private equity, life sciences and technology-related offerings. Sources highlight capital markets co-chair David Oelman and the ‘up-and-comingRamey Layne as ‘having more experience advising energy issuers than any other partner combination in the market’; together, the Houston-based specialists advised Liberty Oilfield Services on its $248.9m upsized IPO. Layne also acted alongside New York’s Brenda Lenahan to assist Spartan Energy Acquisition Corporation with its $552m IPO. On the technology front, Paul Tobias and Wesley Jones, both of whom are based in Austin, advised SailPoint Technologies Holdings on its $276m IPO. In Houston, the group also draws on the experience of firm chairman Mark Kelly and department co-lead Matthew Strock, while REITs expert Daniel LeBey is recommended in Richmond.

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