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Occurring Fact4371Core Concept Technologies Inc.Information and Communications, Services and Others

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

SIGMAXYZ Holdings Inc.'s shareholding increased, making it the largest shareholder. Kaneko Takeshi (金子 武史)'s shareholding has not changed, but his voting rights ratio declined, and he is no longer the largest shareholder.

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Neutral
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177000
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Change in largest shareholder, a major shareholder

Subject Entity

Core Concept Technologies Inc. (filing company), Kaneko Takeshi (金子 武史), and SIGMAXYZ Holdings Inc.

Occurrence12 June 2026
7 days later
Awareness or receipt of notice19 June 2026 (the date SIGMAXYZ Holdings Inc.'s Large-Volume Shareholding Report (Change Report No.6) was filed with the Kanto Local Finance Bureau)
This disclosure06/22/2026
Cause

The company confirmed the change because SIGMAXYZ Holdings Inc. filed a Large-Volume Shareholding Report (Change Report No.6) with the Kanto Local Finance Bureau. The substantive reason for the increase in the number of shares held is not disclosed.

Change in voting rights ownership ratio

Kaneko Takeshi (金子 武史)14.66%→14.40%(-0.26pt)

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

Kaneko Takeshi (金子 武史): 23,400 voting rights (2,340,000 shares), 14.66%, No. 1 (as of 29 May 2026). SIGMAXYZ Holdings Inc.: 22,466 voting rights (2,246,600 shares), 14.07%, No. 2 (as of 29 May 2026)

Voting rights ownership percentage after the change

Kaneko Takeshi (金子 武史): 23,400 voting rights (2,340,000 shares), 14.40%, No. 2 (as of 12 June 2026). SIGMAXYZ Holdings Inc.: 24,236 voting rights (2,423,600 shares), 14.91%, No. 1 (as of 12 June 2026)

Related procedures

Type

Submission of a Large Shareholding Report (Change Report)

Court or authority

Kanto Local Finance Bureau

Outlook

There is no agreement between the two companies regarding a capital alliance. The companies will continue discussions and consideration regarding the possibility of collaboration with SIGMAXYZ Holdings Inc. Collaboration that contributes to enhancing corporate value will continue to be considered while maintaining management independence.

Event that occurred
ItemDetails
Event nameChange in largest shareholder, a major shareholder
Date of occurrence12 June 2026
Date recognized / date notice received19 June 2026 (the date SIGMAXYZ Holdings Inc.'s Large-Volume Shareholding Report (Change Report No.6) was filed with the Kanto Local Finance Bureau)
Subject EntityCore Concept Technologies Inc. (filing company), Kaneko Takeshi (金子 武史), and SIGMAXYZ Holdings Inc.
CauseThe company confirmed the change because SIGMAXYZ Holdings Inc. filed a Large-Volume Shareholding Report (Change Report No.6) with the Kanto Local Finance Bureau. The substantive reason for the increase in the number of shares held is not disclosed.
Type of litigation or proceedingSubmission of a Large Shareholding Report (Change Report)
Court or authorityKanto Local Finance Bureau
Voting rights ownership percentage before the changeKaneko Takeshi (金子 武史): 23,400 voting rights (2,340,000 shares), 14.66%, No. 1 (as of 29 May 2026). SIGMAXYZ Holdings Inc.: 22,466 voting rights (2,246,600 shares), 14.07%, No. 2 (as of 29 May 2026)
Voting rights ownership percentage after the changeKaneko Takeshi (金子 武史): 23,400 voting rights (2,340,000 shares), 14.40%, No. 2 (as of 12 June 2026). SIGMAXYZ Holdings Inc.: 24,236 voting rights (2,423,600 shares), 14.91%, No. 1 (as of 12 June 2026)
OutlookThere is no agreement between the two companies regarding a capital alliance. The companies will continue discussions and consideration regarding the possibility of collaboration with SIGMAXYZ Holdings Inc. Collaboration that contributes to enhancing corporate value will continue to be considered while maintaining management independence.
Items this document does not state (15)
Target Locations / ProductsAmount 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.

The company states that it confirmed the change because SIGMAXYZ Holdings Inc. filed a Large-Volume Shareholding Report (Change Report No.6) with the Kanto Local Finance Bureau on 19 June 2026. The substantive reason for the increase in the number of shares held is not disclosed.

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 | Core Concept Technologies Inc. (4371) timely disclosure | Komori