Komori
Occurring Fact4004Resonac Holdings CorporationMaterials and Chemicals

Notice Regarding a Change in the Largest Shareholder Among the Major Shareholders

Capital Research and Management Company’s voting rights ratio increased from 11.05% to 15.44%, making it the largest shareholder. Meanwhile, 日本マスタートラスト信託銀行株式会社(信託口) remained at 14.78%, but its ranking changed from 1st to 2nd.

Worth reading
29Immaterial
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
4.39
Increase in voting rights ratio (percentage points)
Wording
Conditional
How definitive the wording is.

Change in largest shareholder, a major shareholder

Subject Entity

Resonac Holdings Corporation (filing company), Capital Research and Management Company, 日本マスタートラスト信託銀行株式会社(信託口)

Occurrence19 October 2026 (date on which the reporting obligation arose)
7 days later
Awareness or receipt of notice26 October 2026 (change confirmed upon filing of the Large-Volume Shareholding Report (Amendment Report))
This disclosure10/27/2026

Change in voting rights ownership ratio

Capital Research and Management Company11.05%→15.44%(+4.39pt)

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

Capital Research and Management Company: 209,566 units (20,956,652 shares), 11.05%, 2nd. 日本マスタートラスト信託銀行株式会社(信託口): 280,261 units (28,026,100 shares), 14.78%, 1st. Both as of 30 September 2026.

Voting rights ownership percentage after the change

Capital Research and Management Company: 292,697 units (29,269,752 shares), 15.44%, 1st. 日本マスタートラスト信託銀行株式会社(信託口): 280,261 units (28,026,100 shares), 14.78%, 2nd.

Amount of Impact on Business Performance

No financial impact (no impact on the Company’s management structure or financial results)

Outlook

This matter is based on a Large Shareholding Report (Change Report), and has no impact on the Company’s management structure or results of operations.

Event that occurred
ItemDetails
Event nameChange in largest shareholder, a major shareholder
Date of occurrence19 October 2026 (date on which the reporting obligation arose)
Date recognized / date notice received26 October 2026 (change confirmed upon filing of the Large-Volume Shareholding Report (Amendment Report))
Subject EntityResonac Holdings Corporation (filing company), Capital Research and Management Company, 日本マスタートラスト信託銀行株式会社(信託口)
Amount of Impact on Business PerformanceNo financial impact (no impact on the Company’s management structure or financial results)
Voting rights ownership percentage before the changeCapital Research and Management Company: 209,566 units (20,956,652 shares), 11.05%, 2nd. 日本マスタートラスト信託銀行株式会社(信託口): 280,261 units (28,026,100 shares), 14.78%, 1st. Both as of 30 September 2026.
Voting rights ownership percentage after the changeCapital Research and Management Company: 292,697 units (29,269,752 shares), 15.44%, 1st. 日本マスタートラスト信託銀行株式会社(信託口): 280,261 units (28,026,100 shares), 14.78%, 2nd.
OutlookThis matter is based on a Large Shareholding Report (Change Report), and has no impact on the Company’s management structure or results of operations.
Items this document does not state (17)
Target Locations / ProductsCauseAccounting period in which recognizedImpact on Earnings ForecastType of litigation or proceedingCourt or authorityPlaintiffDefendantDate 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 a change in the largest shareholder was confirmed based on the Large-Volume Shareholding Report (Amendment Report) filed on 26 October 2026.

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 Among the Major Shareholders | Resonac Holdings Corporation (4004) timely disclosure | Komori