IZUMI Atsushi

IZUMI Atsushi

Title
Partner
Bar Association
Dai-Ichi Tokyo Bar Association
Languages
Japanese (native)/English

Practice Areas

Corporate
M&A
Dispute Resolution
Competition/Antitrust Law
Global Practice

Engaged Cases

- M&As in general, including corporate acquisition and company split (legal due diligence, contract drafting and review and legal advice on other matters)
- Investments in venture companies, etc. (type; share subscription agreements, shareholders’ agreenent, etc.)
- Public offering, third-party allocation of shares, and allotment to shareholders (allotment of Share Options without Contribution)by a listed company
- Legal advice relating to the Companies Act, the Financial Instruments and Exchange Act and stock exchanges’ rules and regulations
- Legal advice relating to the establishment / management of a joint-venture company and an general incorporated association
- Legal advice relating to corporate governance, internal control system and compliance with laws and regulations
- Support to preparation and operation of shareholders’ general meetings
- Advice on risk management, and handling of corporate scandals
- Antitrust laws (including support related to leniency application, business combination), the Subcontract Act, and the Unfair Competition Prevention Act
- Lawsuits, dispute settlement

Career Summary

January 1981
Born in Chiba Prefecture, Japan
March 1999
Graduated from Kaisei Senior High School
March 2004
Received his LL.B. from the University of Tokyo
October 2005
Received his Diploma from the Legal Training and Research Institute of the Supreme Court of Japan (58th)and Registered as a Japanese attorney
October 2005
Worked with Anderson Mori and Tomotsune
August 2007
Joined Tokyo Hatchobori Law Office
April 2009
Joined Iwata Godo
May 2013
Received his LL.M. from University of Southern California Gould School of Law
2013-2014
Joined Steptoe & Johnson LLP (Washington, DC)
2014
Admitted to the New York State Bar Association
2015-2019
Part-time lecturer at Seikei University Law School

Awards

The Best Lawyers in Japan 2026

List of Main Publications

≪English≫
・“The International Comparative Legal Guide to Litigation & Dispute Resolution 2015 Edition – Japan” （co-author, Global Legal Group, 2015）
≪Japanese≫
・“The Latest Shareholder Meeting Stories” (co-author, Shoji Homu, 2022)
・“Preparation for Simulated Questions and Answers for Shareholder Meetings　- With Response to SR in Mind -” (co-author, Shoji Homu No. 2293 (April 25, 2022 issue), 2022)
・“Management, etc. of Shareholders Meeting on the Day Thereof” (co-author, Shoji Homu No. 2292 (April 15, 2022 issue), 2022)
・“6,000 Lectures on Legal Issues for Financial Institutions” (co-author, Kinzai Institute For Financial Affairs, 2022)
・“Preparation for Amendment to Civil Code: Points for Drafting Contracts” (co-author, Shoji Houmu, 2018)
・“5,000 Lectures on Legal Issues for Financial Institutions” (co-author, Kinzai Institute For Financial Affairs, 2018)
・”M&A with an Eye to the Post-Acquisition Period” (article of “The Baset of the Laws” series, page 2 of Kinyu Keizai Shinbun, December 3, 2018)　
・“New Story of Shareholders' Meeting” (co-author, Shoji Houmu, 2017)
・“Commercial Judicial Precedent which Adds Color to the Period” (co-author, Shoji Houmu, 2015)
・”IPO and Strategic Legal Affairs – Also from the Perspectives of Accountants”(co-author, Shoji Houmu, 2015)
・“Special Edition: Q&A Concerning Revised Company Law and Practical Business” (Kinyu Homu Jijo No. 2002) (co-author)
・“Shin Shoji Hanrei Binran” in Shoji Homu (from July 2010 to May 2012) (in serial, co-author)
・“Review of the Revised Act on Special Measures for Strengthening Financial Functions: Further financing facilitation fueled by public fund injection” (Financial Compliance, May 2010) (co-author)

Publications

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Seminars

  • 202503

    "Road Map for Reform of the Companies Act: METI Working Group on Corporate Governance"

    Speaker： IZUMI Atsushi　 YAMADA Kohei　 MAETA Takumi　

  • 202407

    IG hosts a webinar for Japanese companies on issues in US law

    Speaker： IZUMI Atsushi　 IKEDA Minako　 YAMADA Kohei　 NAKAZAWA Ryo　

  • 201509

    Toji Yoshihiro, Izumi Atsushi and Okushi Kenichi, along with Professor Yukimi Ozeki and Visiting Professor Masahiro Murakami of Seikei University, delivered a series of omnibus lectures on the theme of “Corporate Legal Affairs” (15 rounds in total) at Seikei University Law School.

    Speaker： TOJI Yoshihiro　 IZUMI Atsushi　 OKUSHI Kenichi　

  • 201504

    Izumi Atsushi, David Walsh and Motomura Takeshi delivered a lecture entitled "Strategic Measures to Deal with International Cartel Investigations - in Preparation for Contingencies in the United States/Europe-" at Ark Hills Club on Wednesday, April 8, 2015, co-hosted by Steptoe & Johnson LLP, a major law firm based in the United States and Europe, and Iwata Godo. We are sincerely grateful of the many guests who attended.

    Speaker： MOTOMURA Takeshi　 IZUMI Atsushi　

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News

  • 202504

    22 lawyers of our firm were recognized in The Best Lawyers in Japan 2026.

    Best Lawyers
    ■ Antitrust / Competition Law
    TOJI Yoshihiro
    IZUMI Atsushi

    ■ Banking and Finance Law
    TOJI Yoshihiro
    SAKAMOTO Tomoko
    MATSUDA Takao

    ■ Corporate and Mergers and Acquisitions Law
    MOTOMURA Takeshi

    ■ Corporate Governance and Compliance Practice
    YOSHIHARA Tomomichi

    ■ Insolvency and Reorganization Law
    TAGO Shinya
    MOTOMURA Takeshi
    URANAKA Hirotaka

    ■ Labor and Employment Law
    TAGO Shinya

    ■ Litigation
    TOJI Yoshihiro
    WAKABAYASHI Shigeo
    MOTOMURA Takeshi
    YOSHIHARA Tomomichi
    URANAKA Hirotaka

    ■ Tax Law
    MUTOU Yuuki


    Best Lawyers - "Ones to Watch"
    ■ Antitrust / Competition Law
    OKAMURA Yu
    MATSUHASHI Sho

    ■ Arbitration and Mediation
    NAKAMURA Saeko
    MIURA Takashi

    ■ Corporate and Mergers and Acquisitions Law
    OKAMURA Yu
    SASAKI Tomoo
    FUKATSU Haruno
    FUKUCHI Takumi
    KITAGAWA Hiroki
    TOYOOKA Hiroto
    MATSUHASHI Sho

    ■ Information Technology Law
    ADACHI Makoto

    ■ Intellectual Property Law (Non-Patent)
    ISHIKAWA Hiroaki

    ■ Labor and Employment Law
    NAKAMURA Saeko
    KITAGAWA Hiroki

    ■ Privacy and Data Security Law
    HORITA Koji

  • 202412

    The December 2 Nikkei carries a comment by Izumi Atsushi in its article "Special Committees Become More Important in M&A: High Court Ruling on the FamilyMart TOB Price"

  • 202310

    The October 2 Nikkei carries a comment by Izumi Atsushi in its article "A subsidiary that speaks up to its parent"

  • 202304

    The Nikkei carries a comment by Izumi Atsushi in its article "Family Mart Takeover Bid Was Too Cheap"

  • 201407

    Izumi Atsushi resumed his work at Iwata Godo upon completion of his study abroad and training at a law firm in the United States.

  • 201401

    Izumi Atsushi was appointed as a partner of our office.

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