📋 Material Events 1086

Def consulting, inc.

4833 · 株式会社Success Holders

The company reported a change in major shareholders as of February 13, 2026. The Capital Co., Ltd. ceased to be a major shareholder (reducing its stake from 26.00% to 0%), while GP Listed Company Investment D Investment Partnership (a limited liability partnership) became a new major shareholder with a 21.70% stake (15,752,410 shares).

Sompo Holdings, Inc.

8630 · SOMPOホールディングス株式会社

SOMPO Holdings announced a management transition effective April 1, 2026, in which Katsushi Tajiri will be promoted from Executive Officer to Representative Executive Officer (Group CFO), while Masahiro Hamada will step down from Representative Executive Officer Deputy President to become a Director and Executive Officer. Tajiri brings extensive international experience in M&A and overseas business operations within the SOMPO group.

MITSUI MATSUSHIMA HOLDINGS CO.,LTD.

1518 · 三井松島ホールディングス株式会社

The company's Board of Directors meeting held on February 13, 2026 approved a change in representative director position. Shinichiro Kushima, currently serving as Representative Director and Chairman (born June 4, 1951), will transition to an advisory role (Sōdan-yaku) effective June 19, 2026.

Yashima & Co., Ltd.

7677 · 株式会社ヤシマキザイ

The company's Board of Directors resolved on February 13, 2026, to change its representative directors effective April 1, 2026. Shōichirō Seki will be promoted to Representative Director and President, while Masahiro Abe will be appointed as Representative Director and Vice President. Incumbent representatives Atsushi Satō and Kazuaki Takada will step down from CEO roles, transitioning to non-executive director positions.

Milbon Co., Ltd.

4919 · 株式会社ミルボン

The company's audit firm will be changed from Gyosei Audit Corporation to EY Shinnihon Limited Liability Audit Corporation effective March 27, 2026, following the 66th Annual Shareholders Meeting. The change is driven by the auditor's lengthy 30-year tenure and the desire for fresh audit perspectives, coupled with expansion of global business operations.

Sharing Innovations Inc.

4178 · 株式会社Sharing Innovations

The company announces a planned change in representative director (代表取締役社長) effective March 25, 2026. Tsutsumi Takahiro will assume the role of Representative Director and President, replacing Nobuta Masato who will step down. The transition is subject to approval at the scheduled general shareholders meeting on March 25, 2026.

NOVARESE,Inc.

9160 · 株式会社ノバレーゼ

The company announces the replacement of its audit firm. Limited Liability Auditor Azsa will retire as the accounting auditor on March 19, 2026, upon completion of the company's 10th regular shareholders meeting. Limited Liability Audit Corporation Deloitte Touche Tohmatsu has been selected as the new accounting auditor to align with the parent company TKP's auditor and improve audit effectiveness and governance efficiency.

JMC CORPORATION

5704 · 株式会社JMC

The company will replace its accounting auditor from Azusa Audit Corporation (有限責任 あずさ監査法人) to Ark Audit Corporation (アーク有限責任監査法人) effective March 27, 2026, following the expiration of the current auditor's term. The decision was made by the Audit & Supervisory Board on February 13, 2026, and will be subject to shareholder approval at the 34th Annual General Meeting of Shareholders scheduled for March 27, 2026. The replacement was made after comparative evaluation of audit firms based on professional expertise, independence, quality control systems, and appropriateness of audit fees relative to the company's business scale.

HAMAI INDUSTRIES LTD.

6497 · 株式会社ハマイ

The company is replacing its statutory auditor due to the delisting of the incumbent auditor from the Japan Public Accountants Association's list of auditors for listed companies. Touko Limited Liability Audit Corporation will replace Audit Corporation Mahoroba, effective March 24, 2026, at the 94th Annual Shareholders Meeting.

Headwaters Co., Ltd.

4011 · 株式会社ヘッドウォータース

The company decided on February 14, 2026 to replace its external auditor. Koa Audit Corporation (興亜監査法人) will be replaced by Taiyo Limited Liability Audit Corporation (太陽有限責任監査法人) effective March 27, 2026, following the expiration of the current auditor's term. The change was approved by the Audit Committee, with the final decision pending shareholder approval at the 21st Annual General Meeting on March 27, 2026.

AI CROSS Inc.

4476 · AI CROSS株式会社

The company announced a change in its external auditor effective March 26, 2026, at the conclusion of the 11th annual shareholder meeting. Tōyō Audit Corporation will be replaced by Taiyo Limited Liability Audit Corporation as the company's accounting auditor, following a comprehensive evaluation of audit responsiveness and cost efficiency relative to the company's business scale.

Kumagaigumi Co.,Ltd.

1861 · 株式会社 熊谷組

The company's Board of Directors resolved on February 13, 2026, to transition the Representative Director (代表取締役). Okashii Koji will step down from the position of Representative Director and assume the role of Executive Vice President, effective June 26, 2026, following the conclusion of the ordinary general shareholders' meeting.

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5290 · 株式会社ベルテクスコーポレーション

The company's board of directors resolved on February 12, 2026 to transition leadership, with Yuzuru Yamamoto being promoted from Director to Representative Director and President effective April 1, 2026. Concurrently, Akihide Tsuchiya will transition from Representative Director President to Representative Director and Chairman CEO. Yoshito Tanaka will step down from Representative Director Chairman to Director.

BESTERRA CO., LTD

1433 · ベステラ株式会社

Yoshinori Yoshino ceased to be a major shareholder of the company as his voting rights decreased from 10.43% to 9.87% as of January 31, 2026. The company filed this extraordinary report as required by the Financial Instruments and Exchange Act Article 24-5(4) to disclose the change in major shareholders below the reporting threshold.

KITZ CORPORATION

6498 · 株式会社キッツ

The company's audit committee decided to change its certified public accountant firm effective March 26, 2026. EY Shin-Nihon LLC, which has served as the company's auditor since 1976, will be replaced by Azusa Audit Corporation due to the lengthy audit tenure. The change will be submitted to shareholders for approval at the 112th Annual General Meeting of Shareholders scheduled for March 26, 2026.

Visual Processing Japan Co., Ltd.

334A · 株式会社ビジュアル・プロセッシング・ジャパン

The company will replace its accounting auditor from Futaba Audit Corporation to Kanade Audit Corporation effective March 26, 2026. The change follows the company's decision to transition to an Audit Committee-established company structure and reflects the completion of a five-year audit period, combined with considerations of business expansion and future M&A possibilities.

Mitsubishi Estate Company, Limited

8802 · 三菱地所株式会社

The company's Board of Directors resolved on February 10, 2026, to change its representative director effective April 1, 2026. Shoji Miyajima will become the new Representative Executive Officer (代表執行役), succeeding Yuji Fujioka who will transition to Executive Vice President. Miyajima brings extensive experience from his tenure as President of Mitsubishi Jisho Residences, Inc.

SANYO SHOKAI LTD.

8011 · 株式会社三陽商会

Asset Value Investors Limited increased its shareholding in the company from 9.72% to 10.91% of voting rights as of January 30, 2026. This change in major shareholder composition is reported in accordance with the Financial Instruments and Exchange Act Article 24-5(4) and related cabinet office ordinances.

Takashima & Co.,Ltd.

8007 · 高島株式会社

The company's board of directors approved a management succession on February 12, 2026. Akira Yamamoto will be promoted from Managing Executive Officer and CIO to Representative Director and President, effective June 23, 2026, pending shareholder approval. The current Representative Director and President Koichi Takashima will transition to Representative Director, Chairman, and CEO.

Fujiya Co.,Ltd

2211 · 株式会社不二家

On February 10, 2026, the company's Board of Directors resolved to change the position of Mikio Iijima from Vice Chairman (Director) to Representative Director and Chairman. Iijima brings extensive experience from Yamazaki Baking Co., Ltd. and Tohato Inc., where he has served in senior management roles including Representative Director positions.

NIKON CORPORATION

7731 · 株式会社ニコン

The company announced a management restructuring effective April 1, 2026, involving three representative director transitions. Yasuhiro Omura will become Representative Director and President (from Executive Officer CEO), Shiakira Tokunari will become Representative Director and Chairman (from Representative Director and President Executive Officer COO), and Toshikazu Umatatsu will step down from Representative Director (remaining as Director).

Nippon Koshuha Steel Co., Ltd.

5476 · 日本高周波鋼業株式会社

The company's Board approved a change in Representative Director (代表取締役社長) at an extraordinary shareholders meeting held on February 2, 2026. Motoshige Kishi (岸幹根) was appointed as the new Representative Director and President, replacing Daisuke Ogura (小椋大輔) who stepped down from the position.

HEIAN CEREMONY SERVICE CO.,LTD.

2344 · 平安レイサービス株式会社

The company announced a plan to implement a stock consolidation (株式併合) to convert from a publicly listed company to a privately held company. The founding family shareholders, who collectively own 64.29% of outstanding shares, will be the remaining shareholders after the consolidation, while other shareholders will receive fractional shares to be repurchased at ¥1,500 per share based on a court-approved valuation method.

KANDENKO CO.,LTD.

1942 · 株式会社関電工

Ueda Hiroshi, who currently serves as Representative Director and Vice President, will step down from the position of Representative Director on April 1, 2026, and transition to the role of Director. The change was approved at a Board of Directors meeting held on February 9, 2026.

Kyokuto Boeki Kaisha, Limited

8093 · 極東貿易株式会社

Shinoji Sakuma will succeed Yoshiya Okada as Representative Director and President effective April 1, 2026, following a board resolution on February 10, 2026. Okada will transition to Non-Representative Director while retaining his board position. Sakuma brings 40 years of company experience, including international operations and senior management roles across multiple divisions.

H2O RETAILING CORPORATION

8242 · エイチ・ツー・オー リテイリング株式会社

Katsu Hayashi, who served as Representative Director and Vice President, was reassigned to the position of Director (non-representative) effective April 1, 2026. The change was resolved at the Board of Directors meeting held on February 4, 2026, and is being reported in accordance with the Financial Instruments and Exchange Act Article 24-5(4).

JAPAN PURE CHEMICAL CO.,LTD.

4973 · 日本高純度化学株式会社

A major shareholder change occurred on January 30, 2026, involving Hibiki Path Advisors entities. Hibiki Path Advisors SPC (with joint holder Hibiki Path Advisors Pte. Ltd.) became a new major shareholder, increasing combined voting rights from 21.39% to 22.36%. Simultaneously, Hibiki Path Advisors Pte. Ltd.'s individual stake decreased from 21.39% to 9.06%, indicating an internal restructuring within the Hibiki Path Advisors group.

Mitsui Chemicals, Inc.

4183 · 三井化学株式会社

The company announced a change in representative director (代表取締役) effective April 1, 2026. Satoshi Ichimura will be promoted from Executive Managing Director to Representative Director and President, while current Representative Director and President Osamu Hashimoto will transition to Chairman. This represents an internal management succession with the new CEO having 34 years of company tenure.

Cleanup Corporation

7955 · クリナップ株式会社

The company announced a change in representative director following a board resolution on February 5, 2026. Toru Fujiwara will assume the position of representative director on June 25, 2026, succeeding Hiroshi Takeuchi who will retire upon term expiration and transition to an advisory role. Fujiwara is a long-tenured executive with 37 years of service and extensive experience across development, retail, and strategic planning divisions.

Nippon Beet Sugar Manufacturing Co.,Ltd.

2108 · 日本甜菜製糖株式会社

Be Brave Corporation (as business executor of ESG Investment Partnership) increased its shareholding from 8.92% to 10.03% of total voting rights, crossing the 10% threshold as a major shareholder. The shareholding change occurred on January 28, 2026, based on large holdings reports filed on January 14 and February 4.

GSI Creos Corporation

8101 · 株式会社GSIクレオス

The company's Board of Directors resolved on February 9, 2026 to appoint Kunihiro Ono as new Representative Director, effective April 1, 2026. Ono, born April 1, 1968, will transition from his current position as Director and Senior Executive Officer to Representative Director, bringing 34 years of company tenure and extensive experience in corporate planning and management roles.

IHI Corporation

7013 · 株式会社IHI

The company announced the appointment of Atsushi Sato as a new Representative Director (代表取締役), effective April 1, 2026. Sato transitions from his current position as Managing Executive Officer and head of the Aerospace & Defense Business Domain to the representative director role. He has been with the company since 1991 and holds 21,200 shares.

TORAY INDUSTRIES,INC.

3402 · 東レ株式会社

The company announces a change in representative director (代表取締役) effective April 1, 2026. Tetsuya Tsunekawa will be promoted from Vice President Executive Officer to Representative Director, while Akihiro Nikaku transitions from Representative Director Chairman to Chairman, and Kazuhiko Shudou steps down from Representative Director to Advisor.

BeMap,Inc.

4316 · 株式会社ビーマップ

SpicyCompany has increased its shareholding from 9.56% to 10.57% of total voting rights, crossing a significant threshold as a major shareholder. This change is reported pursuant to the Financial Instruments and Exchange Act Article 24-5(4) and the Cabinet Office Ordinance on Disclosure of Corporate Information. The shareholding change occurred on February 2, 2026, based on a large shareholding report submitted by the investor.

UCHIYAMA HOLDINGS Co.,Ltd.

6059 · 株式会社ウチヤマホールディングス

The company reports the death of Representative Director and Chairman Bunnji Uchiyama on February 5, 2026, resulting in a change in the company's representative director position. The filing discloses that the deceased held 8,653,317 shares as of September 30, 2025.

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The company reports the death of Naoki Muné, a certified public accountant who served as one of two audit committee members since April 1, 2005. The company will continue with the remaining auditor, Daisuke Ogihara, as the sole accounting auditor. The audit committee has deemed this transition appropriate.

TOKYU CONSTRUCTION CO.,LTD.

1720 · 東急建設株式会社

The company announced a planned management transition where Koji Hisada will become Representative Director and President (scheduled for late June 2026), and Tomoya Masuda will become Representative Director (effective April 1, 2026). Current CEO Mitsuhiro Terada will transition to Chairman. Suwa Yoshihiko will step down from Representative Director to Director role.

SANYO CHEMICAL INDUSTRIES,LTD.

4471 · 三洋化成工業株式会社

Higuchi Akinori, who has served as Representative Director and President, will transition to the position of Director and Senior Advisor effective April 1, 2026. The company's Board of Directors approved this executive transition on February 9, 2026. Higuchi will maintain ownership of 3,800 shares following the transition.

SMS CO.,LTD

2175 · 株式会社エス・エム・エス

Oasis Management Company Ltd. has become a major shareholder of the company, increasing its voting rights from 8.28% (67,924 voting rights) to 12.23% (100,336 voting rights) as of January 26, 2026. This shareholding change exceeds the 10% threshold and triggers mandatory disclosure under the Financial Instruments and Exchange Act.

Ishikawa Seisakusho, Ltd.

6208 · 株式会社石川製作所

The company's Board of Directors resolved on February 9, 2026, to change its representative director (CEO). Toshikazu Noguchi will be promoted from Representative Director and Executive Vice President to Representative Director and President effective April 1, 2026, succeeding Ikukinori Konagaya who will transition to the role of Director and Advisor.

CHEMIPRO KASEI KAISHA,LTD

4960 · ケミプロ化成株式会社

Fukuoka Seisuke ceased to be a major shareholder of the company as his voting rights decreased from 18,054 shares (10.87% of total) to 15,660 shares (9.43% of total) on January 28, 2026. This change fell below the major shareholder threshold and is being reported in accordance with the Financial Instruments and Exchange Act Article 24-5(4).

KOKUSAI ELECTRIC CORPORATION

6525 · 株式会社KOKUSAI ELECTRIC

Applied Materials Europe B.V., a major shareholder, reduced its shareholding from 238,600 shares (10.22% of total voting rights) to 118,600 shares (5.08% of total voting rights) as of January 30, 2026. This reduction resulted in the shareholder falling below the major shareholder threshold, triggering the disclosure requirement under the Financial Instruments and Exchange Act.

Nitta Corporation

5186 · ニッタ株式会社

The company's board of directors resolved on February 6, 2026 to change the status of Representative Director Yasushige Ishikiriyama. Effective April 1, 2026, he will transition from Representative Director Chairman and Executive Officer of Chairman to Chairman of the Board of Directors, ceasing his role as representative director.

PS Construction Co., Ltd.

1871 · 株式会社ピーエス三菱

The company's Board of Directors resolved on February 6, 2026 to transition Takuya Mori from Representative Director and President Executive Officer to Chairman of the Board, effective March 31, 2026. Mori, born January 27, 1956, holds 19,054 shares as of the filing date.

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5021 · コスモエネルギーホールディングス株式会社

The company's Board of Directors resolved on February 6, 2026, to change the representative director position. Junko Takeda will step down from her role as Representative Director (and Senior Executive Officer) effective April 1, 2026, and will assume the position of Director. She currently holds 47,200 shares as of December 31, 2025.

SALA CORPORATION

2734 · 株式会社サーラコーポレーション

The company's Board of Directors resolved on January 13, 2026 to promote Takayuki Watai from Senior Managing Director to Representative Director (常務取締役 to 代表取締役常務) effective February 20, 2026. Watai brings extensive experience in business strategy and innovation, having held multiple executive roles in corporate planning and strategic initiatives over the past several years.

AXELL CORPORATION

6730 · 株式会社アクセル

Representative Director and President Akihiro Saito resigned from his position on February 3, 2026, as decided at the board of directors meeting on the same date. At the time of resignation, Saito held 58,650 shares in the company.

Nippon Tungsten Co.,Ltd.

6998 · 日本タングステン株式会社

The company announced a change in representative director leadership effective April 1, 2026. Kenji Nakahara will be promoted from Director and Vice President Executive Officer to Representative Director and President, succeeding Shinji Goto who will transition to Director status. Nakahara brings 30 years of experience including 27 years with the company across multiple business divisions.

TOKAI Holdings Corporation

3167 · 株式会社TOKAIホールディングス

The company's board of directors resolved on February 5, 2026, to change its representative director (代表取締役). Junichi Yamada, who currently serves as Representative Director and Senior Executive Officer, will transition to a non-executive director role effective April 1, 2026.

GMO Financial Holdings, Inc.

7177 · GMOフィナンシャルホールディングス株式会社

The company's Board of Directors resolved on February 4, 2026, to change its representative executive officers effective March 19, 2026. Hideyuki Takashima will transition from Representative Executive Vice Chairman (CEO) to Representative Executive Chairman and President (CEO), while Tomiaki Ishimura will retire as Representative Executive President (COO). Following this change, the company will operate with a single representative executive officer structure.