Morrison Foerster is an international law firm with lawyers practicing throughout the United States, Asia, and Europe. Click to discover more.

mofo_share_image.jpg

Morrison Foerster

common-default.jpeg

Terms / Notices

Cookies

Privacy Policy

Reporting Hotline

Attorney Advertising

Alumni

  Linkedin

MoFo LinkedIN

  Facebook

MoFo Facebook

YouTube

MoFo Youtube

Morrison Foerster - Footer

MoFo Advises on SB Energy Investment and Strategic Data Center Partnership with OpenAI

You have not solved the recaptcha challenge yet or session expired, try again.

Email Disclaimer

Disclaimer

Unsolicited e-mails and information sent to Morrison Foerster will not be considered confidential, may be disclosed to others pursuant to our <a href="https://www.mofo.com/about/privacy-policy.html">Privacy Policy</a>, may not receive a response, and do not create an attorney-client relationship with Morrison Foerster. If you are not already a client of Morrison Foerster, do not include any confidential information in this message. Also, please note that our attorneys do not seek to practice law in any jurisdiction in which they are not properly authorized to do so.

Feedback

mofo-logo-2022.svg

People

Capabilities

Resources

About

Community

Offices

Careers

Stay Connected

Morrison Foerster advised SoftBank on a strategic investment of $1 billion in SB Energy by SoftBank Group and OpenAI to build and...

<h3>Sorry, we weren’t able to find the terms you entered.</h3>Please try a different term or keyword.

People

Capabilities

Resources

Not Found Cards

About Morrison Foerster

people-default-header-desktop.jpg

people-default-header-mobile.jpg

Default Meta Data

Morrison Foerster advised SoftBank on a strategic investment of $1 billion in SB Energy by SoftBank Group and OpenAI to build and operate next-generation AI data centers as part of <a href="https://group.softbank/en/news/press/20250122" target="_blank">The Stargate Project</a>.The equity investment in SB Energy will support its growth as a leading development and execution partner for data center campuses and associated energy infrastructure. In connection with the investment, OpenAI entered into a 1.2 GW data center lease with SB Energy to build and operate a Stargate site in Milam County, Texas. The parties also formed a non-exclusive preferred partnership to develop a new model for data center builds, bringing together OpenAI’s first-party data center design with SB Energy’s proven expertise in speed, cost discipline, and integrated energy delivery to deliver purpose-built AI infrastructure at scale.The MoFo team advising SoftBank was led by mergers + acquisitions partner Ken Siegel, private equity partner Chris McKinnon and private funds partner Stephanie Thomas, supported by tax partners Richard Nugent and Dave Sturgeon.Read <a href="https://www.prnewswire.com/news-releases/openai-and-softbank-group-partner-with-sb-energy-to-build-and-operate-next-generation-ai-data-centers-to-advance-stargate-302657541.html" target="_blank">SB Energy's press release</a>.

MoFo Advises on SB Energy Investment and Strategic Data Center Partnership with OpenAI

Sign Up

Ken Siegel is the managing partner of Morrison Foerster’s Tokyo oﬃce and the head of the oﬃce’s 50-attorney M&A team. Ken’s practice focuses on the representation of high-technology companies in acquisitions, joint ventures, and strategic alliances.Ken has been consistently ranked as one of the leading U.S. attorneys in Japan. Among other things, he is the only attorney rated as a “Star Individual” for M&A in Japan (the level above Band 1) by Chambers Global, having been ranked at this level for more than a dozen years (2011–2024 editions). According to Chambers Asia-Paciﬁc, Ken is “commercial and pragmatic, an incredible M&A attorney” who “deserves tremendous credit for his M&A practice” and has “outstanding acumen, experience and leadership.”Ken received the Financial Times Innovative Lawyers Award in 2022, recognizing him as one of the most innovative practitioner in the Asia-Pacific region. In 2025, he and his team were recognized again by the Financial Times as Innovative Lawyers in Science and Technology for their groundbreaking AI work on Stargate, a joint venture developing advanced AI infrastructure in the United States. He has also been recognized multiple times as in the American Lawyer – including as “Dealmaker of the Week” for his work on Hitachi’s $5 billion sale of its hard disk-drive business to Western Digital as well as for representing SoftBank in its $21.6 billion acquisition of Sprint, a transaction that was named the Global M&A Deal of the Year by The American Lawyer.Ken received his B.A. magna cum laude from Amherst College. He studied Japanese language at Stanford University’s Inter-University Center for Japanese Language in Tokyo and at the Johns Hopkins University’s School of Advanced International Studies (SAIS), receiving a graduate degree in International Aﬀairs. He received his J.D. degree from the University of Chicago Law School.<h4>Select Rankings</h4>Ken’s recent notable awards include:<ul><li>Most Innovative Legal Practitioner in Asia-Pacific (Financial Times Innovative Lawyers Award 2022)</li></ul><ul dir="ltr"><li>Star Individual for Japan: Corporate/M&A (Chambers Global 2024)</li><li dir="ltr">Star Individual for Japan: Corporate/M&A (Chambers Asia-Pacific 2024)</li><li>Hall of Fame for Japan: Corporate and M&A (The Legal 500 Asia Pacific 2025)</li><li>Market Leader for Japan: M&A (IFLR1000 2024)</li><li>Corporate, M&A Law, Private Equity, Private Funds and Venture Capital Law [The Best Lawyers in Japan (Recognized since 2009)]</li><li>Foreign Lawyer of the Year (Asian Legal Business (ALB) Japan Law Awards 2018)</li><li>Tokyo Managing Partner of the Year (Asian Legal Business (ALB) Japan Law Awards 2017)</li></ul>

Kenneth A. Siegel

Partner

Chris represents venture capital investors, private equity firms, and emerging and established companies in corporate finance and securities matters, including venture capital, growth equity and private equity investments, mergers and acquisitions, joint ventures, restructurings, and other strategic transactions.Chris has significant experience advising on complex deals involving high-growth, venture-backed companies in the technology industry (AI, Fintech, AR/VR, semiconductors, software). For private equity sponsors, he advises on investment fund transactions, buyouts, and divestitures. For entrepreneurs, he advises fast-growing emerging companies throughout their lifecycle, from formation through exit.Before rejoining Morrison Foerster, Chris advised a leading global investment firm, as associate general counsel and legal director, on cross-border investment and M&A transactions. Leveraging that experience, Chris provides clients with creative, business-forward, and solutions-oriented advice.Chris has been recognized as a top-tier advisor by numerous leading publications, including the Financial Times, Venture Capital Journal, San Francisco Business Times, and Daily Journal. He is on the leadership committee of the ABA’s Private Equity and Venture Capital Committee and frequent author and speaker on investment- and M&A-related topics and trends.At NYU School of Law, Chris was a Lederman Fellow in Law & Economics and on the executive board of the NYU Journal of Law & Business. He majored in business economics as an undergraduate at University of California, Santa Barbara.

Christopher McKinnon

Stephanie, Chair of the firm’s global Private Funds Group, has over 20 years of experience advising on private fund formation and operations, as well as on regulatory compliance matters. She represents U.S. domestic and global fund sponsors and institutional investors in connection with the formation of, and investments in, buyout funds, venture capital funds, secondary funds, debt funds, infrastructure funds, fund–of–funds, social impact funds and other private funds with a broad range of investment strategies. She has been described by a client as “extremely knowledgeable in the fund formation space, very good to work with and thoughtful about the needs of her clients.”Private Fund Sponsors. Stephanie represents fund sponsors and the management teams of private funds in the formation of their private funds, as well as in ongoing fund operations, including upper–tier planning, parallel and feeder fund structures, alternative and offshore vehicles, securities law matters, ERISA compliance, transfers or sales of partnership interests, including secondary transactions, and other tax and regulatory matters.She has considerable experience negotiating anchor investor arrangements, navigating cross–border fund matters, structuring co–investment and overage programs, representing firms and individual partners at the time of hire or departure (including involuntary removal), and the formation of feeder vehicles, parallel funds and special purpose vehicles. She also advises U.S. and international companies in the structuring of their corporate venture capital programs.Institutional Investors. Stephanie has advised institutional investors in hundreds of private fund formations, involving foreign and domestic funds ranging in size from $40 million to $21 billion. These investors, including state and corporate pension funds, sovereign wealth funds, universities, fund-of-funds, insurance companies, and other institutional investors, have commitments ranging from $5 million - $1 billion on a per-deal basis. Her experience includes representing significant limited partner investors in some of the largest private market funds ever raised.Investment Advisers. Stephanie advises fund sponsors and other investment advisers on the principal aspects of the Investment Advisers Act and the Dodd–Frank Act. She assists her clients in navigating the regulatory landscape, including new state and federal registration requirements, exemption eligibility, compliance programs and ongoing compliance matters.Stephanie works in the firm’s Palo Alto office and is active in the business community. Prior to joining the firm in 2005, she was a member of the fund formation group in the Palo Alto office of Cooley LLP.

Stephanie Thomas

Chair of Global Private Funds Group

Richard Nugent is a partner in the firm’s New York office and chair of its Tax practice.Richard has over 25 years of experience advising on the tax aspects of complex transactions including public and private M&A, spin-offs, joint ventures, internal restructurings, and financings and capital markets transactions. He also advises debtors and creditors within and outside of bankruptcy.Richard has been recognized in Chambers USA, where he is praised as “an extremely knowledgeable and dedicated attorney” and “well-versed in communicating complex issues.” The Legal 500 describes Richard as having a “deep understanding of the business, including product supply, marketing, and distribution” which clients describe as “priceless when representing us in deal matters.” Prior to joining Morrison Foerster, Richard was a tax partner at another international law firm in New York. He serves on the Executive Committee of the New York State Bar Association Tax Section and is a member of the Tax Forum. A sought-after speaker, Richard frequently presents on tax topics for Practising Law Institute programs.Richard holds an LL.M. with distinction from Georgetown University, a J.D. with honors from Rutgers School of Law – Newark, and a B.A., summa cum laude, from Saint Peter’s University. He also served as a law clerk to Judge Richard F. Suhrheinrich of the U.S. Court of Appeals, Sixth Circuit and Judge Robert P. Ruwe of the U.S. Tax Court.<h4>Representative Experience</h4><ul><li>Represented Centuri Holdings and parent company Southwest Gas Holdings in $238 million public offering of common stock</li><li>Represented Paine Schwartz Partners, a global leader in sustainable food chain investing, in its investment in Chex Finer Foods, a value-added specialty food distributor</li><li>Represented the board of Continental Disc Corporation, a portfolio company of Tinicum, in connection to its sale to Baker Hughes, an energy technology company</li><li>Represented Hooter’s Inc. and Hoot Owl Restaurants, L.L.C. in the acquisition of over 100 restaurants from Hooters of America LLC, which filed for Chapter 11 protection on March 31st in the U.S. Bankruptcy Court</li><li>Represented Centuri Holdings and parent company Southwest Gas Holdings in $353 million IPO and concurrent private placement</li><li>Represented C2 Capital Partners in its investment in Stella & Chewy’s, a leading North American pet food manufacturer</li></ul>

Richard Nugent

Chair of the Tax Practice

David Sturgeon is a partner in Morrison Foerster’s Federal Tax practice.Dave advises clients on a broad range of complex business transactions, including domestic and cross-border mergers and acquisitions, joint ventures, spin-offs and other divestitures, as well as financings, refinancings, restructurings and other business transactions.He earned his J.D. from the University of Chicago Law School, where he was a member of the Chicago Journal of International Law, and received his Master of Laws in taxation from New York University School of Law.Prior to joining Morrison Foerster, Dave was an associate at a law firm in New York, where he represented public companies, financial institutions, private equity clients and other sponsor entities across industries in an extensive range of business transactions.