Reid has experience spanning international mergers and acquisitions, venture financings, U.S. securities law matters, and international commercial agreements such as core technology licensing contracts. Fluent in Japanese, Reid regularly advises public and private Japanese and American companies in these areas. Prior to joining southgate, Reid practiced as an independent registered foreign lawyer in Japan through Monroe-Sheridan Foreign Law Office from 2014 to 2024. Reid began his career as an associate at Simpson Thacher & Bartlett in New York and Tokyo, where he negotiated contracts and prepared other documentation for derivatives instruments, M&A transactions, and billions of dollars of securities issuances.Reid is highlighted as a key lawyer in the Corporate and M&A ranking (2026) of Legal 500.<\/p>\n
Reid is also a Professor at Keio Law School, one of Japan\u2019s top-ranked law schools. Reid\u2019s current and past courses have covered cross-border M&A, startup and venture capital law, international capital markets, and international business contracts.<\/p>\n<\/div>
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Publications<\/h3><\/div>\n- Co-author, \u201cTrends and Developments chapter for Japan,\u201d in the Corporate M&A 2025 guide published by Chambers and Partners<\/em>, May 2025<\/li>\n
- Co-author, \u201cLaw and Practice chapter for Japan,\u201d in the Venture Capital 2025 guide published by Chambers and Partners<\/em> (May 2025)<\/li>\n
- \u201cConvertible Equity in the Japanese Startup Ecosystem,\u201d\u00a0University of Pennsylvania Asian Law Review<\/em>, Vol. 19, No. 1 (2023)<\/li>\n
- \u201cThe Woman Next Door,\u201d Kuniko Mukoda (translation by A. Reid Monroe-Sheridan),\u00a0Kurodahan Press<\/em>\u00a0(May 2021)<\/li>\n
- \u201cLegal Risks and Mitigation Strategies Relating to Insolvent American Startups,\u201d\u00a0New Business Law<\/em>, Vol. 1170 (May 15, 2020) (in Japanese)<\/li>\n
- \u201cPromoting Legal Innovation in Japanese Startup Financing,\u201d\u00a0George Mason Journal of International Commercial Law<\/em>, Vol. 10, No. 2 (Spring 2019)<\/li>\n
- \u201cThe Role of a Registered Foreign Lawyer,\u201d\u00a0Jiy\u016b to Seigi [Freedom and Justice]<\/em>\u00a0(Oct. 2018), Japan Federation of Bar Associations (in Japanese)<\/li>\n
- \u201c<\/em>Presentation on the Establishment of the LL.M. in Global Legal Practice at Keio University Law School (with Koji Tsurumi),\u201d in\u00a0H\u014ds\u014d Y\u014dsei to Rinsh\u014d Ky\u014diku [Lawyers and Clinical Education]<\/em>\u00a0No. 10, pp. 87-92 (March 2018), Nihon Kajo Publishing Co., Ltd. (in Japanese)<\/li>\n
- \u201cAnalytical Versus Substantive Approaches in American and Japanese Law Schools,\u201d in\u00a0Comparative Legal Education from Asian Perspective, Keio University Press<\/em>\u00a0(2017)<\/li>\n
- \u201cUnifying Legal Departments in Global Companies,\u201d Interview with Koji Tsurumi,\u00a0Mita Hy\u014dron<\/em>\u00a0(Dec. 2016), Keio University Press (in Japanese)<\/li>\n
- \u201cS<\/em>ubstance Overload: A Comparative Examination of Japanese Corporate Governance Law Through the Lens of the Daiwa Bank Case,\u201d\u00a0Washington International Law Journal<\/em>, Vol. 24, No. 2 (April 2015)<\/li>\n<\/ul>\n<\/div>
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Speaking Engagements<\/h3><\/div>\n- \u201cStartup Financings in Japan and the US\u201d, Techstars Tokyo, September 2025<\/li>\n
- \u201cRaising Money in Japan and the US\u201d, Techstars Tokyo, September 2024<\/li>\n
- \u201cStartups\u2019 Goals for Expansion into the U.S.: Specific Steps for Business Expansion,\u201d Moon Creative Lab Tokyo (Hosted by Stripe, Inc.) (Tokyo, Japan), September 8, 2023 (in Japanese)<\/li>\n
- \u201cCareers for US Lawyers in Asia,\u201d\u00a0<\/em>Harvard Law School (hosted by Harvard Asia Law Society),\u00a0online, Nov. 10, 2021<\/li>\n
- Guest Lecture on Japanese Law, \u201cAdvanced Readings in Japanese Human Rights<\/em>,\u201d Harvard Law School (Cambridge, Massachusetts, U.S.A., via videoconference), November 17, 2020<\/li>\n
- \u201cBasic Legal Knowledge for Seed Funding\u00a0in\u00a0Silicon Valley,\u201d Online Seminar (Japan), June 29, 2020<\/li>\n
- \u201cKey Legal Knowledge for International\u00a0Founders\u00a0in\u00a0Tokyo,\u201d Tokyo Founders (Tokyo, Japan), November 24, 2019<\/li>\n
- \u201cPromoting Legal Innovation in Japanese Startup Financing,\u201d Harvard Law School (Cambridge, Massachusetts, U.S.A.), September 28-29, 2018 (research presentation)<\/li>\n
- \u201cPresentation on the Establishment of the LL.M. in Global Legal Practice at Keio University Law School (with Koji Tsurumi),\u201d Meiji University (Tokyo, Japan), \u201cSymposium: From Bridge-Building to Integration: Going Beyond the Philosophy of the Justice System Reform of 2001\u201d (Organized by the Japan Clinical Legal Education Association), Apr. 23, 2017 (in Japanese)<\/li>\n
- \u201cA Comparative View of Japanese Corporate Governance and the Daiwa Bank Case,\u201d Melbourne Law School (Melbourne, Australia), February 14, 2017<\/li>\n
- \u201cChallenges in Japan-America Crossborder Business Combinations: A Case Study of Tokyo Electron,\u201d Hitotsubashi Graduate School of International Corporate Strategy (Tokyo, Japan), November 2015<\/li>\n<\/ul>\n<\/div>
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Awards<\/h3><\/div>\n- The Legal 500 Asia Pacific<\/em> \u2013 \u201cOther Key Lawyers\u201d in Corporate and M&A: Independent Local Firms, Japan, 2026<\/li>\n<\/ul>\n<\/div>
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