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Haynes and Boone, LLP

Bill S. Kleinman

Bill S. Kleinman



  • Capital Markets and Securities
  • Chemical
  • Corporate
  • Corporate Governance

WSG Practice Industries


WSG Leadership

ABA Group
Bill Kleinman focuses on corporate, securities and technology law. His experience includes public offerings and private finance, mergers and acquisitions, strategic alliances, corporate governance, SEC/S-OX compliance, and technology/commercial contracting.

Bill is a member of the ABA's Task Force on Legal Project Management. He assists general counsel and corporations that have robust legal needs by coordinating service delivery, project management and budgeting across all sections of the firm.

Bill was recognized in Chambers USA, Chambers and Partners, for Technology: Corporate & Commercial (Texas), 2019. Bill led the Haynes and Boone deal team that was selected as the “Energy M&A Deal of the Year” (middle market) at the Global M&A Network, Americas 2019, and the “U.S.A. M&A Deal of the Year” award at the Global M&A Network, Americas Awards 2018. Bill is AV Peer Review Rated Preeminent by Martindale-Hubbell Law Directory. He was recognized by The Best Lawyers in America, Woodward/White, Inc., for Corporate Law and Mergers and Acquisitions Law, 2016-2020, was recognized as a Standout Lawyer, Acritas Stars, 2018-2019, and won the Client Choice Award for General Corporate in Texas, Globe Business Publishing Ltd., 2016.

Technology Capabilities

Bill graduated as a chemical engineer, and he has a broad understanding of the science and technology that drive today's most innovative companies. He helps companies implement technology intensive business strategies and transactions, and turn their technology advantage into competitive advantage.

Bar Admissions



J.D., University of Texas at Austin School of Law, 1983, Associate Editor, Texas Law Review
B.S., Chemical Engineering, Massachusetts Institute of Technology, 1979
Areas of Practice

Capital Markets and Securities | Chemical | Corporate | Corporate Governance | Corporate Strategic M&A | Joint Ventures | Mergers and Acquisitions | Private Equity | Public Company Transactions | Supply Chain Management | Technology | Technology Mergers and Acquisitions | Technology Transactions | Venture Capital and Emerging Company

Professional Career

Significant Accomplishments

Represented a private equity-backed international manufacturer in its acquisition of a U.S. operation focused on oilfield equipment, in order to enter the U.S. market.

Represented companies in industries such as telecommunications hardware, enterprise software, wireless PCS and international distribution in IPOs, public offerings of equity and debt and 144A transactions.

Represented buyers and sellers of companies in industries such as technology, software, service, and industrial products in mergers, stock and asset acquisitions, auctions, private equity and ESOP transactions.

Represented publicly traded companies in connection with corporate governance matters, defensive measures and SEC reporting and compliance.

Represented industrial and service companies in connection with the formation of domestic and international joint ventures and strategic partnerships.

Represented start-up companies and their investors in segments such as VOIP, network processors, semiconductors, outsourcing and internet media in seed and venture capital fundings, stock option plans, stockholder agreements and strategic agreements

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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