Komori
Occurring Fact5905NIHON SEIKAN K.K.Construction and Materials

Notice of Change in Major Shareholders

株式会社みみっく's voting rights ownership ratio increased from 9.87% (133,000 shares) as of 1 April 2026 to 10.94% (147,400 shares) as of 21 July 2026, resulting in a change in the Company's major shareholder. The Company has not confirmed the number of shares beneficially owned under the name of the shareholder.

Worth reading
31Immaterial
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
10.94
% (voting rights ownership interest after the change)
Wording
Conditional
How definitive the wording is.

Change in major shareholders

Subject Entity

NIHON SEIKAN K.K. (filing company)

Occurrence21 July 2026
7 days later
Awareness or receipt of notice28 July 2026 (the date on which the Company confirmed the change based on the submission of the Large Shareholding Report (Change Report))
This disclosure07/29/2026

Change in voting rights ownership ratio

Shareholders Covered9.87%→10.94%(+1.07pt)

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

1,330 voting rights (133,000 shares), 9.87%, No. 2 (as of 1 April 2026)

Voting rights ownership percentage after the change

1,474 voting rights (147,400 shares), 10.94%, No. 2 (as of 21 July 2026)

Related procedures

Court or authority

Director-General of the Kinki Local Finance Bureau

Outlook

As this matter is based on a Large Shareholding Report (Change Report), there are no particular matters to disclose regarding the outlook.

Event that occurred
ItemDetails
Event nameChange in major shareholders
Date of occurrence21 July 2026
Date recognized / date notice received28 July 2026 (the date on which the Company confirmed the change based on the submission of the Large Shareholding Report (Change Report))
Subject EntityNIHON SEIKAN K.K. (filing company)
Court or authorityDirector-General of the Kinki Local Finance Bureau
Voting rights ownership percentage before the change1,330 voting rights (133,000 shares), 9.87%, No. 2 (as of 1 April 2026)
Voting rights ownership percentage after the change1,474 voting rights (147,400 shares), 10.94%, No. 2 (as of 21 July 2026)
OutlookAs this matter is based on a Large Shareholding Report (Change Report), there are no particular matters to disclose regarding the outlook.
Items this document does not state (17)
Target Locations / ProductsCauseAmount of Impact on Business PerformanceAccounting period in which recognizedImpact on Earnings ForecastType of litigation or proceedingPlaintiffDefendantDate 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 confirmed the change in its major shareholder after 株式会社みみっく submitted a Large Shareholding Report (Change Report) to the Director-General of the Kinki Local Finance Bureau on 28 July 2026. No specific reason for the increase in the shareholding was stated.

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 of Change in Major Shareholders | NIHON SEIKAN K.K. (5905) timely disclosure | Komori