Komori
Occurring Fact285AKioxia Holdings CorporationElectrical Equipment and Precision Instruments

Notice Regarding a Change in the Largest Shareholder, a Major Shareholder

Toshiba Corporation became the largest shareholder with 21.86% of voting rights, while BCPE Pangea Cayman, L.P. became the second-largest shareholder with 15.33%. Toshiba’s number of shares held was unchanged, while BCPE’s number of shares held and ranking declined.

Worth reading
28Immaterial
0–100. This measures how worthwhile something is to read, not how good or bad the company is.
Direction
Neutral
Direction inferred from the company’s description.
Scale
21.86
議決権所有割合（％、株式会社東芝・異動後）
Wording
Conditional
How definitive the wording is.

Change in largest shareholder, a major shareholder

Subject Entity

キオクシアホールディングス株式会社の株主である株式会社東芝およびBCPE Pangea Cayman, L.P.

Occurrence26 November 2025
7 days later
Awareness or receipt of notice2025年12月3日

（大量保有報告書（変更報告書）の提出により当社が確認した日）

This disclosure12/04/2025

Change in voting rights ownership ratio

株式会社東芝21.86％→21.86％（0.00pt）

The voting rights ownership percentage is the proportion of the voting rights exercisable at a shareholders' meeting held by the shareholder.

Voting rights ownership percentage before the change

株式会社東芝：1,179,781個（21.86％、2025年10月17日現在）；BCPE Pangea Cayman, L.P.：1,187,510個（22.01％、2025年11月25日現在）。議決権所有割合は2025年9月30日現在の発行済株式総数等を基準に算出。

Voting rights ownership percentage after the change

株式会社東芝：1,179,781個（21.86％、2025年11月26日現在）；BCPE Pangea Cayman, L.P.：827,510個（15.33％、2025年11月26日現在）。議決権所有割合は2025年9月30日現在の発行済株式総数等を基準に算出。

Related procedures

Type

Submission of a Large Shareholding Report (Change Report)

Court or authority

Kanto Local Finance Bureau

Outlook

There are no material matters to report.

Event that occurred
ItemDetails
Event nameChange in largest shareholder, a major shareholder
Date of occurrence26 November 2025
Date recognized / date notice received2025年12月3日（大量保有報告書（変更報告書）の提出により当社が確認した日）
Subject Entityキオクシアホールディングス株式会社の株主である株式会社東芝およびBCPE Pangea Cayman, L.P.
Type of litigation or proceedingSubmission of a Large Shareholding Report (Change Report)
Court or authorityKanto Local Finance Bureau
Voting rights ownership percentage before the change株式会社東芝：1,179,781個（21.86％、2025年10月17日現在）；BCPE Pangea Cayman, L.P.：1,187,510個（22.01％、2025年11月25日現在）。議決権所有割合は2025年9月30日現在の発行済株式総数等を基準に算出。
Voting rights ownership percentage after the change株式会社東芝：1,179,781個（21.86％、2025年11月26日現在）；BCPE Pangea Cayman, L.P.：827,510個（15.33％、2025年11月26日現在）。議決権所有割合は2025年9月30日現在の発行済株式総数等を基準に算出。
OutlookThere are no material matters to report.
Items this document does not state (16)
Target Locations / ProductsCauseAmount of Impact on Business PerformanceAccounting period in which recognizedImpact on Earnings ForecastPlaintiffDefendantDate of filing / date of actionClaim amount / surcharge amountAmount of receivables at risk of non-collection or delayed collectionSuspended operationsScheduled resumption dateInvestigation structureMeasures to prevent recurrenceDirectors' and officers' liabilityPlanned follow-up disclosure

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

2025年12月3日付で株主から大量保有報告書（変更報告書）が関東財務局に提出され、当社が主要株主である筆頭株主の異動を確認したため。異動の underlying な理由は記載されていない。

How to read this page

This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Notice Regarding a Change in the Largest Shareholder, a Major Shareholder | Kioxia Holdings Corporation (285A) timely disclosure | Komori