📋 Material Events 1086

Maruha Nichiro Corporation

1333 · マルハニチロ株式会社

The company's Board of Directors approved on February 24, 2026, a management transition effective April 1, 2026. Yasuda Daisuke will be promoted from Senior Managing Executive Officer to Representative Director and President/COO, while current Representative Director and President Ikemi Satoshi will transition to Representative Director and Chairman/CEO.

OPTORUN CO.,LTD.

6235 · 株式会社オプトラン

The company will change its external auditor (accounting auditor) from Yūgen Sekinin Daiyu Audit Corporation to Moore Mirai Audit Corporation, effective March 26, 2026, upon conclusion of the 27th Annual General Meeting of Shareholders. The change was decided to ensure the auditor can adequately support the company's planned overseas expansion and business growth.

ARAYA INDUSTRIAL CO.,LTD.

7305 · 新家工業株式会社

The company's board of directors approved a change in representative directors on February 10, 2026. Noriaki Koji will be promoted from Director to Representative Director (Common Director) effective April 1, 2026, while Tetsuhiro Hamada will step down from Representative Director (Managing Director) to Director on the same date. Koji brings extensive banking and financial management experience from Sumitomo Mitsui Bank and Minato Bank.

TAIHEIYO CEMENT CORPORATION

5233 · 太平洋セメント株式会社

The company's Board of Directors resolved on February 24, 2026 to appoint Shinji Fukami as a new Representative Director and Vice President, effective April 1, 2026. Fukami transitions from his previous role as Executive Vice President and Global Business Division Head, bringing 40 years of company tenure and extensive experience in overseas and environmental business operations.

C.E.Management Integrated Laboratory Co.Ltd

6171 · 株式会社土木管理総合試験所

The company's Board of Auditors resolved on February 20, 2026 to change its certified public accountant auditor firm effective March 23, 2026. Limited Liability Audit Corporation Deloitte Touche Tohmatsu (有限責任監査法人トーマツ) will be replaced by Kanade Audit Corporation (かなで監査法人) as the company's accounting auditor, to be approved at the 41st ordinary general meeting of shareholders.

K Pharma,Inc.

4896 · 株式会社ケイファーマ

The company announced a change in its certified public accounting firm effective March 26, 2026. EY Shinwa Limited Liability Audit Corporation will replace Azsa Limited Liability Audit Corporation as the statutory auditor. The change follows the completion of a 5-year audit period and was decided to introduce fresh perspectives while maintaining audit quality.

TOSHIBA TEC CORPORATION

6588 · 東芝テック株式会社

The company announces a planned change in representative director roles effective June 29, 2026. Yasuki Ohnishi will be promoted from Senior Managing Executive Officer to Representative Director, President, and Chief Operating Officer (COO), while current Representative Director and President Hironobu Nishikori will transition to Representative Director, Chairman, and Chief Executive Officer (CEO).

Kamigumi Co., Ltd.

9364 · 株式会社上組

The company's Board of Directors resolved on February 13, 2026, to appoint three new Representative Directors (代表取締役) effective April 1, 2026. Hiramatsu Koichi, Nagata Yukihiro, and Shiino Kazuhisa will each be promoted from Director/Senior Managing Executive Officer to Representative Director/Senior Managing Executive Officer roles, overseeing different operational regions.

NIPPON SEIKI CO.,LTD.

7287 · 日本精機株式会社

The company's board of directors resolved on February 20, 2026, to change its representative director positions. Masahiro Yoshihara will be promoted to Representative Director Vice President (effective June 26, 2026), while current Representative Director Chairman Koichi Sato will transition to Chairman (non-representative) on the same date.

Takashimaya Company,Limited

8233 · 株式会社髙島屋

The company's Board of Directors resolved on February 19, 2026 to make changes to its representative director positions effective March 1, 2026. Two existing representative directors (Yokoyama Kazuhisa and Sonoda Atsuhiro) will step down to regular director roles, while Makino Koichi will be promoted from Senior Managing Director to Representative Managing Director (代表取締役専務).

Showa Sangyo Co., Ltd.

2004 · 昭和産業株式会社

The company's Board of Directors resolved on February 20, 2026 to change the representative director (代表取締役). Kazuhiko Niitsuma will transition from Representative Director Chairman to Director Chairman (non-representative) effective March 31, 2026, while continuing his role as chairman.

SINFONIA TECHNOLOGY CO., LTD.

6507 · シンフォニアテクノロジー株式会社

The company's Board of Directors resolved on February 19, 2026, to change its representative directors effective April 1, 2026. Shigeru Yamakuni will become Representative Director and President, replacing Shinichi Hirano. Additionally, Yuji Senzu will become Representative Director (Senior Executive Officer). The outgoing representatives will transition to Chairman and Advisor roles respectively.

SHIZUKI ELECTRIC COMPANY INC.

6994 · 株式会社指月電機製作所

The company announced a change in its Representative Executive Officer (CEO) effective April 1, 2026. Inagaki Yuichi, currently Senior Executive Officer, will be promoted to Representative Executive Officer President, succeeding Adachi Nobuaki who is stepping down from the position. Inagaki has 36 years of tenure with the company and extensive experience in power systems and industrial equipment divisions.

SHOWA SYSTEM ENGINEERING CORPORATION

4752 · 株式会社 昭和システムエンジニアリング

A major shareholder, Kyoko Kodono, ceased to be a principal shareholder of the company on February 12, 2026. Her voting rights decreased from 4,740 votes (11.25% of total) to 3,040 votes (7.21% of total), falling below the threshold for classification as a major shareholder.

Komehyo Holdings Co.,Ltd.

2780 · 株式会社コメ兵ホールディングス

The company reports a change in its lead major shareholder, with I-BELIEVE Co., Ltd. increasing its voting rights from 9.64% to 14.86% of total shareholder voting rights as of February 19, 2026. The filing was submitted in accordance with the Financial Instruments and Exchange Act Article 24-5(4) and relevant cabinet office ordinance requirements for material changes in major shareholder composition.

Chordia Therapeutics,Inc

190A · Chordia Therapeutics株式会社

New Life Science1号投資事業有限責任組合 ceased to be a major shareholder of the company as of January 23, 2026. The entity's voting rights decreased from 10.51% to 9.99% of total shareholder voting rights due to dilution from new share warrant exercises. This shareholder status change is reported pursuant to the Financial Instruments and Exchange Act Article 24-5(4).

MISUMI Group Inc.

9962 · 株式会社 ミスミグループ本社

The company's board of directors approved a management restructuring effective April 1, 2026, in which Shimizu Arata will assume the position of Representative Director and President, while incumbent Representative Director and President Ono Tatsutaka will transition to Director and Chairman. Additionally, Nishimoto Kosuke will step down from Representative Director and Chairman to become a Director. This succession involves executives with extensive consulting and digital transformation backgrounds.

THK CO., LTD.

6481 · THK株式会社

The company announced a change in its external auditor (Audit & Assurance Certified Public Accountant) effective at the conclusion of the 56th Annual General Meeting of Shareholders scheduled for March 20, 2026. Taiyo Limited Liability Audit Corporation will be replaced by Azusa (有限責任 あずさ監査法人) due to the incumbent auditor's long tenure and to introduce fresh perspectives with enhanced global audit capabilities.

Ray Corporation

4317 · 株式会社レイ

The company's Board of Directors resolved on February 19, 2026 to change its Representative Director and President. Yoichi Isobe will assume the position of Representative Director and President effective March 1, 2026, replacing Shiro Wakebe who will transition to a non-representative Director role.

MATSUMOTO YUSHI-SEIYAKU CO.,LTD.

4365 · 松本油脂製薬株式会社

The company resolved at the board meeting held on February 16, 2026, to appoint Koji Kawahara as a new Representative Director (代表取締役専務). Kawahara will transition from his current position as Managing Director (専務取締役) in charge of Sales Headquarters and Export Division, effective April 1, 2026. He brings extensive experience from roles at Mitsubishi UFJ Bank, NICOS, NTN Corporation, and the company itself.

TPR CO .,LTD.

6463 · TPR株式会社

The company announced a planned CEO succession at its board meeting on February 13, 2026. Yamato Koji will transition from Executive Officer to Representative Director and President & COO in June 2026, replacing the retiring Yano Kazumi who will remain as a director. This is a scheduled leadership succession following Yamato's promotion to President & COO in April 2025.

KOMATSU LTD.

6301 · 株式会社小松製作所

The company's Board of Directors resolved on February 16, 2026, to change its Representative Director (CEO) effective April 1, 2026. Taisuke Kusaba will assume the role of Representative Director and Senior Executive Officer, succeeding Ken Horikoshi who will transition to Director. Kusaba brings extensive experience in R&D and international operations, including tenure as President and COO of Komatsu America.

PostPrime Inc.

198A · PostPrime株式会社

The company announced a change in representative director (代表取締役) effective March 25, 2026. Satoru Matsushima will assume the position of Representative Director President, replacing Naoki Asami who will transition to Director status. This succession was resolved at the Board of Directors meeting held on February 18, 2026.

PENTA-OCEAN CONSTRUCTION CO.,LTD.

1893 · 五洋建設株式会社

On February 19, 2026, the company's Board of Directors resolved a change in representative director status. Kazuya Ueda will step down from his position as Representative Director and Executive Vice President to become an Executive Officer Vice President, effective June 24, 2026. He will retain responsibility for the Civil Engineering Division sales operations.

Adastria Co., Ltd.

2685 · 株式会社アダストリア

On February 18, 2026, the company's Board of Directors resolved to modify the representative director position. Michio Fukuda (born July 10, 1946) will transition from Representative Director Chairman to Chairman (non-representative) effective March 1, 2026. This change was filed in accordance with the Financial Instruments and Exchange Act.

Anshin Guarantor Service Co.,Ltd.

7183 · あんしん保証株式会社

Amizaka Kou, an advisor (相談役) to the company and major shareholder, passed away on February 17, 2026, resulting in a material change in major shareholder composition. His voting rights decreased from 18,713 shares (10.78% of total shareholder voting rights) to zero, triggering the extraordinary report filing requirement.

KH Neochem Co.,Ltd.

4189 · KHネオケム株式会社

Strategic Capital Corporation (株式会社ストラテジックキャプタル) has increased its shareholding in the company from 8.31% to 11.55% of total voting rights, crossing a material threshold that triggers mandatory disclosure under the Financial Instruments and Exchange Act. The stake increase occurred on February 9, 2026, based on a large volume shareholding report filed with the Kanto Finance Bureau.

NICHIREI CORPORATION

2871 · 株式会社ニチレイ

The company's Board of Directors resolved on February 17, 2026, to appoint Kazunori Shimamoto as the new Representative Director and President (CEO) effective April 1, 2026. Concurrently, the incumbent Representative Director and President Kenya Ookushi will transition to Representative Director and Chairman.

Sekisui Chemical Co.,Ltd.

4204 · 積水化学工業株式会社

The company's Board of Directors resolved on February 17, 2026 to change its representative director. Katoh Keita will transition from Representative Director President to Chairman of the Board effective March 1, 2026. Nishida Tatsuya will become the new Representative Director effective June 19, 2026, pending his election as a director at the 104th Annual General Meeting of Shareholders.

KOKUYO CO.,LTD.

7984 · コクヨ株式会社

Oasis Management Company Ltd. has become the new largest shareholder of the company, increasing its voting rights from 279,439 shares (6.57%) to 436,820 shares (10.28%) as of February 6, 2026. This change in major shareholder composition is reported pursuant to the Financial Instruments and Exchange Act Article 24-5(4) and related Cabinet Office ordinances.

SYSMEX CORPORATION

6869 · シスメックス株式会社

Sysmex Corporation announced a change in its Representative Director position effective April 1, 2026. Matsui Ishine will assume the role of Representative Director President, transitioning from his current position as Director and Senior Executive Officer, while incumbent Representative Director President Asano Kaoru will step down to become a Director.

Life Intelligent Enterprise Co.,Ltd.

5856 · 株式会社エルアイイーエイチ

A major shareholder, Toyohiko Yamaguchi, ceased to be a principal shareholder of the company as his voting rights decreased from 129,513 shares (11.88%) to 100,731 shares (9.24%) on January 29, 2026. This change falls below the threshold for classification as a major shareholder and is being reported in accordance with the Financial Instruments and Exchange Act Article 24-5(4).

SANKYO SEIKO CO.,LTD.

8018 · 三共生興株式会社

The company announced a change in representative director effective April 1, 2026. Tetsuji Miyazawa, currently serving as Senior Executive Officer, will be promoted to Representative Director and President (CEO), while the incumbent CEO Akira Inoue will transition to Representative Director and Chairman. This succession represents an internal promotion from within the company's leadership ranks.

Life Foods Co., Ltd.

3065 · 株式会社ライフフーズ

The representative director and chairman of the company resigned on February 28, 2026, transitioning to the position of board chairman. Following a successful handover period after appointing Yoshihiro Sugamoto as representative director president in March 2025, the outgoing executive completed the succession process. The company's management structure shifts from dual representation to single representation, with no changes to management policies or business strategies.

SMS CO.,LTD

2175 · 株式会社エス・エム・エス

The company's leading major shareholder has changed from MORO LLC to Oasis Management Company Ltd. as of February 3, 2026. Oasis Management Company Ltd. increased its voting rights from 12.23% to 18.77% (153,976 voting rights), while MORO LLC maintained its 18.74% stake but is no longer the leading shareholder.

OSAKA Titanium technologies Co.,Ltd

5726 · 株式会社大阪チタニウムテクノロジーズ

Kobe Steel Co., Ltd. (神戸製鋼所) ceased to be a major shareholder of the company on February 16, 2026. The shareholding decreased from 38,000 voting rights (10.35%) to 36,500 voting rights (9.94%), falling below the major shareholder threshold. This change is reported in accordance with the Financial Instruments and Exchange Act Article 24-5(4).

The Musashino Bank, Ltd.

8336 · 株式会社武蔵野銀行

Representative Director Otomo Ken has resigned from his positions as Representative Director and Director, effective February 28, 2026. He will transition to a position as head of the Business Division. The company filed this extraordinary report in accordance with the Financial Instruments and Exchange Act.

KAJIMA CORPORATION

1812 · 鹿島建設株式会社

The company's Board of Directors resolved on February 12, 2026 to appoint Masafumi Kiryu as the new Representative Director and President. Kiryu will be promoted to Vice President Executive Officer on April 1, 2026, and will assume the CEO position in late June 2026 following the ordinary general meeting of shareholders and subsequent board resolution.

Mitsui Mining and Smelting Company, Limited

5706 · 三井金属鉱業株式会社

On February 13, 2026, the company's Board of Directors resolved to change the position of Representative Director. Takeshi Nounobi will transition from Representative Director President to Chairman of the Board, effective April 1, 2026.

BULL-DOG SAUCE CO.,LTD.

2804 · ブルドックソース株式会社

The company's board of directors held on February 13, 2026 resolved to appoint Mai Saiki as a new Representative Director (代表取締役), effective in late June 2026. Saiki will transition from her current position as Senior Executive Officer and Director, bringing 31 years of company experience with expertise in marketing, product planning, R&D, and corporate governance.

Mori-Gumi Co., Ltd.

1853 · 株式会社 森組

The company's Board of Directors resolved on February 13, 2026, to change the representative director. Yoshi Yuji (born December 5, 1957) will transition from Representative Director and President to Director, effective April 1, 2026.

Fujii Sangyo Corporation

9906 · 藤井産業株式会社

The company's Board of Directors resolved on February 13, 2026 to appoint Atsushi Takita as a new Representative Director (追加). Takita transitions from his previous role as Senior Executive Officer and President Operating Proxy to become Representative Director, while maintaining his position as head of the Infrastructure Solutions Company.

Allied Architects, Inc.

6081 · アライドアーキテクツ株式会社

The company announced a change of its accounting auditor (会計監査人) effective March 31, 2026. PwC Japan 有限責任監査法人 will be replaced by 永和監査法人 (Eiwa Audit Corporation) following the expiration of the current auditor's term. The change was decided based on a comprehensive evaluation of audit appropriateness, business scale compatibility, and audit cost efficiency.

Orient Corporation

8585 · 株式会社オリエントコーポレーション

Strategic Capital Corporation increased its voting rights in the company from 9.63% to 10.51% (165,614 to 180,788 voting shares), triggering mandatory disclosure of a material shareholder change under the Financial Instruments and Exchange Act. The change occurred on February 2, 2026, and was reported via a large shareholding report filed on February 6, 2026.

BlueMeme Inc.

4069 · 株式会社BlueMeme

On February 13, 2026, the company's Board of Directors approved a change in representative directors. Shingo Matsuoka transitioned from Chairman (取締役会長) to Representative Director and Chairman & President (代表取締役会長兼社長), while Kuniharu Miyawaki retired from his position as Representative Director and President (代表取締役社長). Matsuoka holds 165,000 shares including holdings through asset management company BM Trust Co., Ltd.

TOKYO SANGYO CO.,LTD.

8070 · 東京産業株式会社

The company announced a CEO succession plan at the February 13, 2026 Board of Directors meeting. Asada Yasuo will be promoted from Standing Audit & Supervisory Committee Member to President and Representative Director, while incumbent CEO Kamohara Minoru will transition to Chairman as Representative Director, both effective June 2026.

FUJI SEIKO LIMITED

6142 · 富士精工株式会社

The company's Board of Directors resolved on February 13, 2026 to appoint Hitoshi Mori as new Representative Director President and Naoki Shinoda as new Representative Director Senior Managing Director, both effective May 26, 2026 upon approval at the Annual General Meeting of Shareholders. Both executives have extensive tenure within the company and experience in international subsidiary management and technical operations.

Dynapac Co., Ltd.

3947 · ダイナパック株式会社

The company's board of directors approved on February 13, 2026, the transition of representative director Hisao Shinooka from his position as Representative Director, Senior Executive Officer and President's Assistant to non-executive advisor, effective March 27, 2026. Shinooka holds 14,764 shares in the company.

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Kazutoshi Yamaguchi, who was serving as Representative Director and Senior Executive Officer, will resign from his position as Representative Director effective March 31, 2026. The company's Board of Directors approved this management change at a meeting held on February 13, 2026.

NISSEI ASB MACHINE CO., LTD.

6284 · 日精エー・エス・ビー機械株式会社

The company announces a change in representative director (代表取締役) effective April 1, 2026. Aoki Takota will transition from Executive Vice President (取締役副社長) to become Representative Director and Chairman (代表取締役会長), while current Chairman Aoki Daichi will step down from the representative director position to become a regular director (取締役).