P: 713-904-1944


Corporate & Securities
Mergers & Acquisitions
Spinoffs and other Public Company Transactions
Restructuring & Reorganization
Loan Syndications & Complex Commercial Transactions
Lending & Commercial Finance
International Transactions
Executive Compensation
Boards of Directors & Special Committees

Mark Eisenbraun is a founding partner of the firm Walker Eisenbraun. Mr. Eisenbraun practices corporate and securities law with an emphasis on businesses seeking finance in the private and public markets. His 30 years of practice at national law firms in the areas of securities law, venture capital and mergers and acquisitions include the representation, in the full range of corporate and commercial legal matters, of start-up and small businesses seeking initial or early investment, substantial private enterprises preparing to go public and public companies listed on major stock exchanges throughout the world.


    • public and private offerings of debt and equity securities

    • federal and state securities filings and registrations

    • acquisitions, divestitures and exchange offers

    • spinoffs and other public company transactions

    • commercial financing and complex transactions

    • international transactions

    • broker dealer registration and compliance issues

    • representation of public companies, including periodic Securities and Exchange Commission reporting and compliance, shareholder reporting, executive compensation, corporate governance, contract negotiation and documentation

    • corporate and partnership structure, restructure and reorganization restructure of business assets to accomplish specified goals, including start up, split up, repurchase of shares, financing, management buy-out, exploitation for inventions and founder retirement


    • Represented foreign oil service company in connection with its $250 million joint venture in the United States

    • Seller’s counsel in $13,000,000 acquisition by private equity group of software company by reverse triangular merger under Delaware law with a Boston-based national law firm representing purchaser and a New York-based national law firm representing major stockholders

    • Represented Chinese NYSE-listed biotech company in connection with $163 million acquisition of a private laboratory services company

    • Represented NASDAQ-listed company in connection with $920 million merger with another NASDAQ-listed company in the biotechnology industry

    • Represented stockholder group in settlement of proxy dispute regarding nominations to board of directors of OTCBB company

    • Represented OTC Bulletin Board company in $60 million stockholder offering pursuant to registration rights agreement

    • Represented NYSE listed company in $40 million acquisition of Canadian company

    • Represented London Stock Exchange UK company in $200 million disposition of international manufacturing division headquartered in US with additional locations in Australia, Belgium, China, Germany, Italy, Spain

    • Represented energy exploration and development company in private issuance and public registration of $205 million debt offering, with continuing advice on indenture compliance in connection with its initial public offering in Canada and listing on the Toronto Stock Exchange and U.S. private placement of $170 million of common stock


    • J.D., University of Texas, 1982

    • B.A., magna cum laude, Politics, Philosophy & Economics, University of Oxford, 1979

    • M.A., Politics, Philosophy & Economics, University of Oxford, 1983

    • B.A., summa cum laude, Latin & Greek, University of South Dakota 1976
    – Inducted into Phi Beta Kappa as a junior

  • MORE

    Honors and Awards

    In 2006, he was recognized as one of Houston’s top lawyers by H-Texas magazine

    Professional Memberships and Associations

    Texas Bar Association
    Houston Bar Association

    Community Activities

    Has been extensively involved as a volunteer with Child Advocates and Big Brothers, Big Sisters


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