Notice Concerning Changes in Major Shareholders, the Largest Shareholder Among the Major Shareholders, and Other Affiliated Companies | CHEMIPRO KASEI KAISHA,LTD. (4960) timely disclosure

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

20.87

Voting rights ownership ratio (%)

Wording

Definitive

How definitive the wording is.

Change in the Major Shareholder, Largest Shareholder Among the Major Shareholders, and Other Affiliated Company

Subject Entity

CHEMIPRO KASEI KAISHA,LTD. (the filing company), Sudian Investment Co. Limited, and 株式会社ケアシステムズ

Occurrence28 August 2026

4 days later

Awareness or receipt of notice1 September 2026 (the Company confirmed the change after a Large Shareholding Report from Sudian Investment Co. Limited was filed with the Kanto Local Finance Bureau)

This disclosure09/02/2026

Cause

Because 株式会社ケアシステムズ sold all of its shares in the Company, which were acquired by Sudian Investment Co. Limited

Change in voting rights ownership ratio

Sudian Investment Co. Limited0.00％→20.87％（+20.87pt）

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

Sudian Investment Co. Limited: directly owned, 0 voting rights (0.00%); included in aggregated holdings, 0 voting rights (0.00%); total, 0 voting rights (0.00%). 株式会社ケアシステムズ: 34,670 voting rights (3,467,000 shares), 20.87%, as of 31 March 2026.

Voting rights ownership percentage after the change

Sudian Investment Co. Limited: directly owned, 34,670 voting rights (20.87%); included in aggregated holdings, 0 voting rights (0.00%); total, 34,670 voting rights (20.87%), as of 28 August 2026. 株式会社ケアシステムズ: 0 voting rights (0 shares), 0.00%, as of 28 August 2026.

Impact on Earnings Forecast

There are no particular matters to report.

Related procedures

Court or authority

Kanto Local Finance Bureau

Outlook

There are no particular matters to report.

Event that occurred
Item	Details
Event name	Change in the Major Shareholder, Largest Shareholder Among the Major Shareholders, and Other Affiliated Company
Date of occurrence	28 August 2026
Date recognized / date notice received	1 September 2026 (the Company confirmed the change after a Large Shareholding Report from Sudian Investment Co. Limited was filed with the Kanto Local Finance Bureau)
Subject Entity	CHEMIPRO KASEI KAISHA,LTD. (the filing company), Sudian Investment Co. Limited, and 株式会社ケアシステムズ
Cause	Because 株式会社ケアシステムズ sold all of its shares in the Company, which were acquired by Sudian Investment Co. Limited
Impact on Earnings Forecast	There are no particular matters to report.
Court or authority	Kanto Local Finance Bureau
Voting rights ownership percentage before the change	Sudian Investment Co. Limited: directly owned, 0 voting rights (0.00%); included in aggregated holdings, 0 voting rights (0.00%); total, 0 voting rights (0.00%). 株式会社ケアシステムズ: 34,670 voting rights (3,467,000 shares), 20.87%, as of 31 March 2026.
Voting rights ownership percentage after the change	Sudian Investment Co. Limited: directly owned, 34,670 voting rights (20.87%); included in aggregated holdings, 0 voting rights (0.00%); total, 34,670 voting rights (20.87%), as of 28 August 2026. 株式会社ケアシステムズ: 0 voting rights (0 shares), 0.00%, as of 28 August 2026.
Outlook	There are no particular matters to report.

Items this document does not state (15)

Target Locations / ProductsAmount of Impact on Business PerformanceAccounting period in which recognizedType 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.

Because 株式会社ケアシステムズ sold all of its shares in the Company, which were acquired by Sudian Investment Co. Limited.

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.