📋 Material Events 1086

Extraordinary reports (臨時報告書) — AI-classified EDINET Doc 180 filings. ~1yr coverage, updated daily.

Date Company Category Summary Amount
2026-03-02
6460 · セガサミーホールディングス株式会社
👤 CEO
The company's Board of Directors resolved on February 27, 2026 to transition Osamu Satomi from Representative Director Chairman to Chairman & Founder (non-representative). The change is effective April 1, 2026.
2026-03-02
9531 · 東京瓦斯株式会社
👤 CEO
Kenntaro Kimoto, Representative Executive Officer and Vice President, will step down from his position effective March 31, 2026, as decided by the Board of Directors on February 19, 2026. He will cease to be a representative executive officer, holding 10,200 shares at the time of the transition.
2026-03-02
4552 · JCRファーマ株式会社
👤 CEO
The company's board of directors resolved on February 26, 2026, to transition leadership effective April 1, 2026. Toru Ashida will become Representative Director and Chairman (promoted from Director and Senior Executive Officer), while Hiroyuki Sonoda will become Representative Director and President (promoted from Chief Scientific Officer and Director). Outgoing Representative Director and Chairman/President Makoto Ashida will transition to Director Founder role.
2026-03-02
9991 · ジェコス株式会社
👤 CEO
Tsuyoshi Ishizawa was appointed as a new Representative Director effective April 1, 2026, following a board resolution on February 26, 2026. He transitions from his concurrent roles as Managing Executive Officer and Director, bringing extensive experience from JFE Steel and current leadership at Jecos Design Co., Ltd.
2026-02-27
2154 · 株式会社夢真ビーネックスグループ
👤 Shareholder Rights
M&G Investment Management Limited and its joint holder M&G Investments (Singapore) Pte Limited have increased their voting rights from 8.85% to 10.63% of total shareholder voting rights. This change in major shareholder status is being reported in accordance with the Financial Instruments and Exchange Act Article 24-5(4).
2026-02-27
2379 · ディップ株式会社
👤 CEO
Shiji Masatsugu is stepping down as Representative Director and Chief Operating Officer (COO) to become a regular Director, effective March 1, 2026. He will further retire from the Board of Directors at the shareholders' meeting scheduled for May 21, 2026.
2026-02-27
6305 · 日立建機株式会社
👤 CEO
Hitachi Construction Machinery announced a change in representative executive officers effective April 1, 2026. Yusuke Kajita will step down from his position as Representative Executive Officer and Executive Vice President, while Yoshihiro Narikawa will be promoted to Representative Executive Officer from his current role as Executive Managing Officer. Following this transition, the company will have three representative executive officers: Kotaro Hirano, Masafumi Sakisaki, and Yoshihiro Narikawa.
2026-02-27
3900 · 株式会社クラウドワークス
👤 Takeover Defense
The company entered into a confidentiality agreement with shareholder Hiroyuki Maki on February 27, 2026, which restricts the shareholder from acquiring, transferring, or disposing of the company's ordinary shares without prior consent for an approximately 3-month period. This agreement is intended to facilitate friendly engagement to maximize corporate value and shareholder interests.
2026-02-27
7241 · フタバ産業株式会社
👤 CEO
The company's Board of Directors approved a change in the position of Representative Director and President on February 27, 2026. Yoshihiro Uozumi is retiring as Representative Director and President, and will be succeeded by Toshiyuki Hisatsune, who will be promoted from Executive Officer to the roles of Representative Director and President.
2026-02-27
👤 CEO
The company announced a change in representative director (代表取締役) effective April 1, 2026. Kazuhiro Chida will be promoted from Senior Executive Officer to Representative Director and President, while Nobuki Iwatate will assume the position of Representative Director and Vice President. Incumbent CEO Shoichi Iwanaga will transition to Chairman.
2026-02-27
7777 · 株式会社スリー・ディー・マトリックス
👤 CEO
The company's Board of Directors resolved on February 25, 2026 to transition the Representative Director position. Toshihiko Amanuma will become Representative Director and President on April 1, 2026, succeeding Atsushi Okada who will step down on March 31, 2026 and remain as Director.
2026-02-27
8308 · 株式会社 りそなホールディングス
👤 CEO
The company's board of directors decided on February 27, 2026, to appoint two new Representative Executive Vice Presidents effective April 1, 2026. Isa Shinichiro and Iwatate Nobuki, both current executives with extensive experience in digital transformation and group strategy roles, will assume their new positions.
2026-02-27
3997 · 株式会社トレードワークス
👤 Board
The company will replace its external auditor from Shido Audit Corporation (監査法人シドー) to Izumi Audit Corporation (和泉監査法人) effective March 27, 2026, at the conclusion of the 28th ordinary general meeting of shareholders. The change is motivated by the long tenure of the outgoing auditor and the desire to introduce fresh perspectives while maintaining professional expertise, independence, and quality management standards.
2026-02-27
7313 · テイ・エス テック株式会社
👤 CEO
Yasuta Masanari, the current Representative Director and President, will step down as Representative Director at the conclusion of the 80th Annual General Meeting of Shareholders scheduled for June 2026, with his term expiring. He will remain as a Director until that date, holding 101,000 shares as of January 2026.
2026-02-27
8795 · 株式会社T&Dホールディングス
👤 Board
Hirohisa Uehara transitioned from Representative Director and Chairman (代表取締役会長) to Chairman (取締役会長) effective March 31, 2026. He is scheduled to assume the position of Board Chairman (取締役会議長) on April 1, 2026. This management change was decided at a Board of Directors meeting held on February 27, 2026.
2026-02-27
9202 · ANAホールディングス株式会社
👤 CEO
The company's Board of Directors resolved on February 25, 2026, to change its Representative Director (代表取締役) effective April 1, 2026. Nakahori Kimihiro will assume the position of Representative Director and Senior Managing Executive Officer, succeeding Hirasawa Juichi who will transition to Director. Nakahori brings extensive financial and CFO experience spanning 38 years at the company and its parent All Nippon Airways.
2026-02-27
8074 · ユアサ商事株式会社
👤 CEO
The company's Board of Directors resolved on February 19, 2026 to change its representative director (CEO). Hideaki Murayama will become Representative Director and President/CEO in late June 2026 following shareholder approval, while Kenichi Tanaka will retire from his position as Representative Director and Executive Vice President at the same time.
2026-02-27
9069 · センコーグループホールディングス株式会社
👤 Shareholder Rights
Dalton Investments, Inc., a major shareholder, increased its voting rights from 9.76% to 10.62% of total shareholder voting rights as of February 18, 2026. This extraordinary report was filed pursuant to the Financial Instruments and Exchange Act Article 24-5(4) to disclose the material change in major shareholder composition.
2026-02-27
6694 · 株式会社ズーム
👤 Board
The company is replacing its current statutory auditor Taiyo Limited Liability Audit Corporation with Forvis Mazars Japan Limited Liability Audit Corporation, effective March 26, 2025 (at the conclusion of the 43rd Annual Shareholder Meeting). The change aims to strengthen the group's global audit capabilities, particularly leveraging Forvis Mazars' strong network in Europe and North America where the company has important operations, and to create a more efficient and effective audit framework across the group following the appointment of a Forvis Mazars affiliate as auditor of the German subsidiary in fiscal 2025.
2026-02-27
3861 · 王子ホールディングス株式会社
👤 CEO
The company's Board of Directors resolved on February 27, 2026 to transition the Representative Director. Kaku Masatoshi will step down from his position as Representative Director & Chairman and assume the role of Director, effective April 1, 2026.
2026-02-27
5918 · 瀧上工業株式会社
👤 Shareholder Rights
Mannenao Investment Business Limited Liability Partnership ceased to be a major shareholder of the company as its voting rights decreased from 12.28% to 9.98% of total voting rights on February 24, 2026. This change is reportable under the Financial Instruments and Exchange Act Article 24-5(4) as the shareholder's ownership fell below the major shareholder threshold.
2026-02-27
3189 · 株式会社ANAP
👤 Shareholder Rights
A major shareholder change occurred on February 27, 2026, where Godo Kaisha Yotsuya Digital Innovators became a principal shareholder with 10,320,900 shares (23.91% voting rights), while Capital Typhoon K.K. ceased to be a principal shareholder. The filing reports this shareholder transition in accordance with the Financial Instruments and Exchange Act.
2026-02-27
3976 · 株式会社シャノン
👤 Board
The company's audit committee resolved on February 20, 2026 to change its certified public accountant firm (会計監査人) from PwC Japan Limited Liability Partnership to EY Shinpan Limited Liability Partnership, effective March 30, 2026. The change aims to unify the auditor with the parent company Innovation Inc. and improve consolidated financial audit effectiveness and governance efficiency across the group.
2026-02-27
2130 · 株式会社メンバーズ
👤 CEO
The company's Board of Directors resolved on February 26, 2026, to change the position of Representative Director. Tadashi Kenmochi, who currently serves as Representative Director and Chairman Executive Officer, will transition to Director on April 1, 2026 (scheduled). He holds 2,881,373 shares of the company.
2026-02-26
5870 · 株式会社ナルネットコミュニケーションズ
👤 CEO
The company announced a planned change in representative director (CEO) following a board resolution on February 26, 2026. Shinjiro Tanaka will become the new Representative Director and President effective June 25, 2026 (pending shareholder approval), replacing current CEO Takashi Suzuki who will retire. Tanaka brings extensive international business experience from Itochu Corporation and various overseas subsidiaries.
2026-02-26
1718 · 美樹工業株式会社
👤 Shareholder Rights
The company reports a change in its principal shareholder (筆頭株主) from Yoshimi Miki to Hiroya Miki as of February 20, 2026. Yoshimi Miki's voting rights decreased from 15.32% to 12.68% following a treasury stock acquisition, while Hiroya Miki's voting rights increased from 13.92% to 14.17%, establishing him as the new principal shareholder.
2026-02-26
9066 · 株式会社日新
👤 CEO
The company's board of directors approved changes to its representative directors effective April 1, 2026. Masataka Tsutsui will become the new Representative Director President, while current president Masahiro Tsutsui and representative director Shigeki Mine will step down. Concurrently, the company will undergo an absorption merger with its parent company BCJ-98 (to be renamed Nissin Co., Ltd.), with the current company name changing to Nissin Asset Management Co., Ltd.
2026-02-26
6882 · 株式会社三社電機製作所
👤 CEO
The company's Board of Directors meeting on February 26, 2026 resolved to change the representative director position. Tokuji Yamauchi will assume the role of Representative Director and President (concurrent with head of Corporate Planning Division) effective April 1, 2026, transitioning from his current position as Senior Executive Officer and Director.
2026-02-26
👤 CEO
Yamaguči Nobúaki will step down as Representative Director (代表取締役) and President on April 1, 2026, transitioning to the position of Vice Chairman Executive Officer (副会長執行役員). This change was resolved at a Board of Directors meeting held on February 26, 2026.
2026-02-26
8309 · 三井住友トラストグループ株式会社
👤 CEO
Sumitomo Mitsui Trust Group has announced the appointment of Kiminori Watanabe as a new Representative Executive Officer and CFO, effective April 1, 2026. Watanabe, born May 26, 1967, is transitioning from his current role as Executive Officer Senior Managing Director and Finance Planning Department Head, bringing over 30 years of experience from his tenure at Sumitomo Mitsui Trust Bank since 1991.
2026-02-26
8601 · 株式会社大和証券グループ本社
👤 CEO
The company's Board of Directors approved a change in Representative Executive Officer effective April 1, 2026. Satoh Eiji will assume the position of Representative Executive Officer (Executive Vice President), while the incumbent Niitsuma Shinsuke will step down on March 31, 2026. The transition involves a leadership change at the highest executive level.
2026-02-26
1420 · サンヨーホームズ株式会社
👤 Shareholder Rights
Orix Corporation's shareholding in the company decreased from 12.52% to 9.93% of voting rights, resulting in it no longer qualifying as a major shareholder. The change occurred on February 25, 2026, due to the exercise of new share acquisition rights and issuance of new shares.
2026-02-26
6463 · TPR株式会社
👤 Board
TPR Corporation's Board of Directors approved the implementation of a stock reward trust program (BBT-RS and BBT) designed to link executive compensation to company performance and stock price movements. The program involves a trust arrangement with Mizuho Trust Bank to distribute 565,632 shares (including 468,700 newly issued shares) to 10 directors and 15 non-director executive officers, with restricted stock provisions during employment.
¥753M
2026-02-26
6370 · 栗田工業株式会社
👤 CEO
The company reports a planned transition in representative executive officer positions effective April 1, 2026. Kunio Kuze will be promoted from Executive Officer to Representative Executive Officer (Senior Managing), while Shuji Shirode will step down from Representative Executive Officer (Senior Managing) to Director. Both transitions are subject to formal approval at the board meeting scheduled for April 1, 2026.
2026-02-26
285A · キオクシアホールディングス株式会社
👤 Shareholder Rights
BCPE Pangea Cayman, L.P., a major shareholder, reduced its shareholding from 817,800 shares (15.15% of voting rights) to 438,028 shares (8.12% of voting rights), resulting in the loss of major shareholder status. The change was reported on February 25, 2026, based on a large shareholding change report filed with the Kanto Financial Bureau on February 19, 2026.
2026-02-26
1801 · 大成建設株式会社
👤 CEO
Taisei Corporation announced a planned change in its representative director (CEO) effective April 1, 2026. Junichi Kasahara, currently Senior Executive Officer and Director, will assume the position of Representative Director, while incumbent Masahiko Okada will transition to Director status.
2026-02-26
9024 · 株式会社西武ホールディングス
👤 CEO
Seibu Holdings announced a change in representative directors effective April 1, 2026. Gotoh Takashi will transition from Representative Director and Chairman/CEO to Chairman, while Nishiyama Ryuichiro will assume the role of Representative Director and President, adding the CEO title to his existing COO position.
2026-02-26
3928 · 株式会社マイネット
👤 Board
The company's board of directors has decided to change its audit firm from EY Shin Nihon LLC to A&A Partners Audit Corporation, effective at the conclusion of the 20th Annual Shareholders' Meeting scheduled for March 26, 2026. The change was made after comprehensive consideration of audit fees, fresh audit perspectives, audit efficiency, and the firm's expertise and quality management systems.
2026-02-25
7914 · 共同印刷株式会社
👤 CEO
Yasuo Fujimori, the current Representative Director and Chairman, will transition to Chairman of the Board of Directors effective April 1, 2026. This change was resolved at the Board of Directors meeting held on February 25, 2026, representing a shift in executive leadership roles.
2026-02-25
7259 · 株式会社アイシン
👤 CEO
The company's Board of Directors approved on February 25, 2026, a planned change in representative directors. Yoshihisa Yamamoto will be promoted to Representative Director and Senior Executive Officer, replacing Shintaro Itoh, who will transition to an Audit & Supervisory Board member candidate following his retirement as executive officer on March 31, 2026.
2026-02-25
7211 · 三菱自動車工業株式会社
👤 CEO
Mitsubishi Motors announced the succession of its Representative Executive Vice President (Sales Division) effective April 1, 2026. Kyoya Igarashi, currently Executive Officer and Vice President, will assume the role, replacing Tatsuo Nakamura who is retiring. Igarashi brings 35 years of automotive industry experience including domestic and international sales leadership.
2026-02-25
6623 · 愛知電機株式会社
👤 CEO
The company's Board of Directors approved a management transition effective April 1, 2026, whereby Shinobu Kato will become President and Representative Director, replacing Kazuro Kobayashi who will transition to Chairman. Kato brings 30 years of company experience and has previously served as President of subsidiary Aichi Electric and held senior operational roles including Motor Company President.
2026-02-25
3024 · クリエイト株式会社
👤 CEO
The company's board of directors approved a management transition effective April 1, 2026. Takashi Yoshinari will step down as Representative Director and President, transitioning to Director, while Akihiko Igarashi will be promoted from Managing Director to Representative Director and President. Igarashi has been with the company since 1996 and brings 30 years of internal experience.
2026-02-25
3678 · 株式会社メディアドゥ
👤 CEO
Akira Karida, who served as Representative Director and Deputy President/CFO, transitioned to the position of Director on February 25, 2026, following a board resolution. He retains 34,676 shares in the company after this role change.
2026-02-25
5803 · 株式会社フジクラ
👤 CEO
The company's board of directors resolved on February 25, 2026, to change representative directors effective April 1, 2026. Kazuto Iijima will be promoted from Director CFO to Representative Director CFO, while Tatsuya Sakano will step down from Representative Director CTO to Director Executive Officer.
2026-02-25
7033 · 株式会社マネジメントソリューションズ
👤 CEO
On February 20, 2026, the Board of Directors resolved to change the representative directors. Shinya Takahashi was promoted from Director and Chairman (取締役会長) to Representative Director and Chairman and President (代表取締役会長兼社長). Simultaneously, Akira Kaneko stepped down from Representative Director and President (代表取締役社長) to Director (取締役).
2026-02-25
3591 · 株式会社ワコールホールディングス
👤 CEO
The company's Board of Directors resolved on February 24, 2026 to change the representative director (代表取締役). Akira Miyagi will transition from Representative Director and Vice President Executive Officer to Director role, effective April 1, 2026.
2026-02-25
7422 · 東邦レマック株式会社
👤 CEO
The company's Board of Directors approved on February 16, 2026, the appointment of Koji Yano as a new Representative Director (代表取締役専務) effective March 16, 2026. Yano will be promoted from his current position as Director and Head of Real Estate Business Division, bringing extensive financial and management experience from multiple companies including roles as CFO and CEO.
2026-02-25
6055 · ジャパンマテリアル株式会社
👤 CEO
The company's Board of Directors resolved on February 24, 2026, to promote Hironori Tanaka from Senior Managing Director to Representative Director and President effective April 1, 2026. Concurrently, current President Hisao Tanaka will transition to Representative Director and Chairman.
2026-02-24
5334 · 日本特殊陶業株式会社
👤 CEO
The company announced a management transition effective April 1, 2026, whereby Satoshi Kawai will transition from Representative Director and President to Representative Director and Chairman. Keiji Suzuki will be promoted from Director and Senior Executive Officer to Representative Director and President. Shinichi Odo will step down from Representative Director and Chairman to become an advisor after the June 2026 shareholders meeting.
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