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Mirarth Holdings (8897) · InitiativeAdvanced

Clarifying Oversight and Executive Responsibilities

First written in FY2016. 8 of 12 entries say "Advanced", first in FY2019. Latest entry: 2026-09-28.

12entries
11years
3from disclosures
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How it moved
ProgressHeldSoftenedWorseFirst statedFY2016AdvancedFY2019 – FY2020OtherFY2021 – FY2023-Q3AdvancedFY2024 – 2026-09-282016: 120162017: 020172018: 020182019: 120192020: 120202021: 120212022: 120222023: 120232024: 120242025: 120252026: 42026
Same theme, other companies
Function-Based Group Governance through a CxO SystemA theme 37 companies write about · 0 as a headwind · 38 as a tailwind

The whole theme swung hardest in 2026: 3 of 28 companies on the "Worse" side.

15 other companies' latest entry also says "Advanced".

Ridges = years it wrote progress, valleys = years it wrote worse. Most hopeful companies at the back. Drag to turn, scroll to zoom, right-drag to pan. On a phone, two fingers turn and pinch to zoom; one finger scrolls the page.
Showing 14 of the 37 companies compared. The sentences above are computed from all 37.
Full recordFilings, disclosures and news, newest first
  1. FY2026AdvancedAnnual report

    「As specific matters considered by the Board of Directors in fiscal 2025, the Company sought to strengthen management functions by separating management and execution under the holding company structure, clarify responsibility for each function through the introduction of a CxO structure and other measures, and enhance high-level discussions by the Board of Directors on the Group’s overall strategy and direction.」

    Under the holding company structure, the Company advanced the separation of management and execution, introduced a CxO structure, and clarified functional responsibilities. The Board of Directors specifically considered the business portfolio, human capital, DX, and succession planning.
  2. 2026-06-03AdvancedGeneral Meetings of Shareholders

    「Accordingly, we would like to request the election of 8 directors, including 4 outside directors.」

    The company proposed increasing the number of directors from 7 to 8, including 4 outside directors, at the general meeting of shareholders. The proposal identified 2 new internal director candidates and 1 new outside director candidate, specifying the composition of the oversight and executive structure.
  3. FY2025AdvancedAnnual report

    「As specific matters considered by the Board of Directors in fiscal 2024, the Company considered strengthening the management structure as a holding company, accelerating management decisions by promoting the separation of management and execution, clarifying profitability and business responsibility by segment, making effective use of management resources, and optimizing the holding company structure to further strengthen governance.」

    Under the holding company structure, the Board of Directors was reconstituted with 7 members, including 4 outside directors, and the separation of management and execution and clarification of segment responsibilities were considered. The Nomination Advisory Committee proceeded as far as deciding on training and 360-degree assessments for successor candidates and a skills matrix.
  4. FY2024AdvancedAnnual report

    「As specific matters considered by the Nomination Advisory Committee in fiscal 2023, the Company considered and decided on a succession plan for developing and selecting successors to the CEO and other positions.」

    Under the holding company structure, the Board of Directors was reconstituted with 7 members, including 4 outside directors, and the Nomination Advisory Committee decided on a succession plan for developing and selecting successors to the CEO and other positions.
  5. FY2023-Q3Retirement of officers and change in officer compositionAnnual report

    「6 men, 3 women (women accounted for 33.3% of officers)」

    Several directors, including the Chair of the Board of Directors, retired from office effective 1 October 2022. Following the changes, the officers comprised 6 men and 3 women, with women accounting for 33.3%.
  6. FY2023-Q2Officer departuresAnnual report

    「Director Concurrent Chief Operating Officer (COO) Concurrent Executive Vice President (Overseeing Corporate Planning Division; CSR Officer) Shimizu Kazutaka (清水 一孝) 16 September 2022」

    Director, COO and Executive Vice President Shimizu Kazutaka (清水 一孝) retired from office effective 16 September 2022. The post-retirement officer composition was also disclosed as 10 men and 4 women, with women accounting for 28.6%.
  7. FY2021Change in the number of directorsAnnual report

    「The Board of Directors currently comprises 12 directors, including 4 outside directors. With Representative Director Shimada Waichi (島田 和一) as chair, the Board comprises Directors Murayama Yoshio (村山 義男), Shimizu Kazutaka (清水 一孝), Yamamoto Masashi (山本 昌), Yoshida Masahiro (吉田 正広), Akizawa Shoichi (秋澤 昭一), Iwamoto Taishi (岩本 大志), Takaarashi Mika (髙荒 美香), and Outside Directors Kawada Kenji (川田 憲治), Taniguchi Kentaro (谷口 健太郎), Tsuji Chiaki (辻 千晶), and Yamahira Keiko (山平 恵子). Meetings are generally held once a month.」

    While maintaining a structure with 4 outside directors and all 3 Audit & Supervisory Board Members serving as outside members, the number of directors decreased from the 13 stated for the previous fiscal year to 12.
  8. FY2020AdvancedAnnual report

    「The Board of Directors currently comprises 13 directors, including 4 outside directors. The Audit & Supervisory Board currently comprises 3 full-time Audit & Supervisory Board Members, all of whom are outside Audit & Supervisory Board Members, ensuring a structure for more appropriate auditing of the Board of Directors’ operations and the directors’ business execution.」

    The number of outside directors increased from 3 in the previous fiscal year to 4, and the Board of Directors comprised 13 members. The audit structure in which all 3 Audit & Supervisory Board Members are outside members has also been maintained.
  9. FY2019AdvancedAnnual report

    「To ensure appropriate supervision and auditing of business execution, we have adopted a structure that clearly distinguishes the directors’ responsibility for supervising management from the executive officers’ responsibility for business execution through supervision by the Board of Directors, an audit system operated by the Audit & Supervisory Board Members, and an executive officer system.」

    All 3 outside directors and all 3 Audit & Supervisory Board Members are outside Audit & Supervisory Board Members, and Nomination and Compensation Committees have also been established. The composition and roles of the supervision and audit structure have been defined in greater detail.
  10. FY2016First statedAnnual report

    「We have adopted a structure that clearly distinguishes the directors’ responsibility for supervising management from the executive officers’ responsibility for business execution through supervision by the Board of Directors, an audit system operated by the Audit & Supervisory Board Members, and an executive officer system.」

    The supervision and audit structure includes 2 outside directors and 3 outside Audit & Supervisory Board Members.
Moved together

"Group-wide Internal Control and Risk Management" moved the same way as this thread, in the same document, in 5 of its 12 moves.

555554★123456
  1. ★This thread
  2. 1Group-wide Internal Control and Risk Management5×
  3. 2Linking Performance and Corporate Value through Stock-Compensation-Type Stock Options5×
  4. 3Stable Supply of Newly Built For-Sale Condominiums in the Tokyo Metropolitan Area5×
  5. 4Expansion of the Utility-Scale Solar Power Generation Business5×
  6. 5Expansion of the Number of Condominium Units Under Management5×
  7. 6Advancing ESG Initiatives4×

★ is this thread; numbers match the list above. The number on a line is how many documents both moved the same way in; lines between the other threads count the documents they moved together in too. Threads that move together often sit closer.

When this could move next
No upcoming earnings preview for Mirarth Holdings yet. It last moved in the Governance of 2026-09-28: "Advanced".
News
No news is linked to this thread yet. When an article touches it, it will appear here by date.
Clarifying Oversight and Executive Responsibilities | MIRARTH HOLDINGS,Inc. (8897) | Komori