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Portrait of Sumitomo Mitsui Trust Group

Photo: Kakidai · CC BY-SA 4.0 · Wikimedia Commons

Headquarters: Japan — Holding financière / trust banking / gestion d'actifs / administration titres

Sumitomo Mitsui Trust Group

Banking, finance and insurance

Fiche documentée couvrant 4 controverses, dont « Fondation de The Mitsui Trust Company » et « Fondation de Sumitomo Trust ».

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Profile No. 4417 · Updated on 12 October 2026

Portrait of Sumitomo Mitsui Trust Group

Photo: Kakidai · CC BY-SA 4.0 · Wikimedia Commons
4Documented controversies+ 4 background events
7Sources
0Formal charge · all time
0Conviction

§ Legal statuses reflect the documented sources as of the date shown; they replace neither court decisions nor the presumption of innocence. Counts are not a rating. Methodology

I. Documented controversies

01

2024-2025

Ancien cadre de la banque poursuivi pour délit d'initié; enquête interne et mesures de prévention

Investigation

La SESC a déposé en mars 2025 une plainte pénale contre un ancien salarié de Sumitomo Mitsui Trust Bank, ancien responsable d'une activité d'agence de transfert, au sujet d'achats personnels de titres sur la base d'informations de tender offers obtenues dans le cadre de ses fonctions. Le groupe a ensuite publié les résultats de son enquête et des mesures de prévention.

Sources · 2

  1. [1]
    Securities and Exchange Surveillance CommissionFiling a Criminal Charge Against an Employee of a Trust Bank for Committing Insider TradingRegulatory authorityVery high reliability
  2. [2]
    Sumitomo Mitsui Trust Group / Sumitomo Mitsui Trust BankInvestigation Results of Insider Trading by a former employee and Measures to Prevent RecurrenceCompany documentHigh reliability

Last verified: 24 September 2026

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02

2020

Exclusion irrégulière de votes valides lors du dépouillement des assemblées

Investigation

L'enquête de Sumitomo Mitsui Trust Bank a conclu que des formulaires reçus via le procédé dit de forward processing le jour limite auraient dû être comptés. Des données détaillées existaient pour 975 sociétés, dont 891 clientes directes de la banque; le recomptage a identifié environ 3,4 millions de droits de vote valides non comptés, soit 0,31 % du total analysé.

Sources · 1

  1. [1]
    Sumitomo Mitsui Trust BankInvestigation into tallying of clients' voting rights exercise formsCompany documentVery high reliability

Last verified: 24 September 2026

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03

2011

Intégration de Chuo Mitsui Trust Group et Sumitomo Trust Group

No legal proceedings

Le 1er avril 2011, Sumitomo Mitsui Trust Holdings est créé par l'intégration de Chuo Mitsui Trust Group et Sumitomo Trust and Banking Group.

State of the evidence
Documented

Sources · 2

  1. [1]
    Sumitomo Mitsui Trust GroupHistory of Sumitomo Mitsui Trust GroupCompany documentHigh reliability
  2. [2]
    Sumitomo Mitsui Trust GroupFrequently Asked Questions — Group outlineCompany documentHigh reliability

Last verified: 24 September 2026

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04

2000

Fusion créant Chuo Mitsui Trust and Banking

No legal proceedings

En 2000, la lignée Chuo/Mitsui est réorganisée par fusion pour former The Chuo Mitsui Trust and Banking Company.

State of the evidence
Documented

Sources · 1

  1. [1]
    Sumitomo Mitsui Trust GroupIntegrated Report — History of the Sumitomo Mitsui Trust GroupCompany documentHigh reliability

Last verified: 24 September 2026

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II. Documented background

Documented biographical or institutional milestones (elections, appointments, foundings, acquisitions…). These are not controversies and are not counted as such.

  1. 2024

    Changement de dénomination en Sumitomo Mitsui Trust Group

    À compter du 1er octobre 2024, Sumitomo Mitsui Trust Holdings a changé sa dénomination en Sumitomo Mitsui Trust Group, dans le contexte du centenaire de ses racines historiques.

    Sources · 2
    1. Sumitomo Mitsui Trust Group — Notice regarding Updates of Management Principles and trade-name change
    2. Sumitomo Mitsui Trust Group — History of Sumitomo Mitsui Trust Group
  2. 2012

    Création de Sumitomo Mitsui Trust Bank par fusion de trois banques de trust

    Le 1er avril 2012, The Chuo Mitsui Trust and Banking Company, Chuo Mitsui Asset Trust and Banking et The Sumitomo Trust and Banking ont fusionné pour former Sumitomo Mitsui Trust Bank.

    Sources · 2
    1. Sumitomo Mitsui Trust Group — History of Sumitomo Mitsui Trust Group
    2. Sumitomo Mitsui Trust Group — Frequently Asked Questions — Group history
  3. 1925

    Fondation de Sumitomo Trust

    La seconde lignée majeure du groupe est Sumitomo Trust, créée en 1925.

    Sources · 1
    1. Sumitomo Mitsui Trust Group — Integrated Report — History of the Sumitomo Mitsui Trust Group
  4. 1924

    Fondation de The Mitsui Trust Company

    L'histoire officielle du groupe fait remonter l'une de ses deux principales lignées à la création de The Mitsui Trust Company en 1924, première société de trust japonaise établie sous le nouveau cadre législatif.

    Sources · 1
    1. Sumitomo Mitsui Trust Group — Integrated Report — History of the Sumitomo Mitsui Trust Group

III. Constellation of documented links

No documented link with another published profile for now.

Two profiles are linked when a documented controversy of one names the other. The link points to that controversy and its sources; it does not indicate a personal relationship.

IV. Has something changed?

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