Komori
Occurring Fact268ARigaku Holdings CorporationElectrical Equipment and Precision Instruments

(Progress on Disclosed Matters) Notice Concerning Changes in the Largest Shareholder among Major Shareholders and Other Affiliated Companies

61,123,436 common shares of the Company were transferred from Atom Investment, L.P. to Onto Innovation Inc., making Onto Innovation the Company's largest shareholder among its major shareholders and an other affiliated company. Atom ceased to be a major shareholder and the largest shareholder.

Worth reading
30Immaterial
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Direction
Neutral
Direction inferred from the company’s description.
Scale
27
Voting rights ownership ratio (%)
Wording
Definitive
How definitive the wording is.

Change in the Largest Major Shareholder and Other Affiliated Company

Subject Entity

Rigaku Holdings Corporation, Onto Innovation Inc., Atom Investment, L.P.

Target Locations / Products

The Company's common shares

Occurrence10 August 2026 (the date on which the share transfer was completed). The scheduled date of the change is 12 August 2026 (the scheduled date of completion of the book-entry transfer procedures).
Same day
Awareness or receipt of notice10 August 2026 (the date on which the Company received notice from Atom and Onto Innovation that the share transfer had been completed)
This disclosure08/12/2026
Cause

The transfer of the Company's common shares from Atom Investment, L.P. to Onto Innovation Inc. and the resulting change in the shareholder composition

Amount of Impact on Business Performance

No amount has been disclosed. The Company considers the impact on its results to be immaterial.

Impact on Earnings Forecast

The impact of this change on the Company's results is immaterial. No revision to the earnings forecast has been stated.

Change in voting rights ownership ratio

Onto Innovation0.00%→27.00%(+27.00pt)

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

Onto Innovation: 0% (before the change). Atom Investment, L.P.: 617,741 voting rights (61,774,100 shares), 27.29%, largest shareholder. The basis is the total number of voting rights held by all shareholders as of 30 June 2026.

Voting rights ownership percentage after the change

Onto Innovation: 611,234 voting rights (61,123,436 shares), 27.00%, largest shareholder. Atom Investment, L.P.: 6,506 voting rights (650,664 shares), 0.29%. The basis is the total number of voting rights held by all shareholders as of 30 June 2026.

Outlook

The book-entry transfer procedures are scheduled to be completed on 12 August 2026. The impact of this change on results is immaterial.

Event that occurred
ItemDetails
Event nameChange in the Largest Major Shareholder and Other Affiliated Company
Date of occurrence10 August 2026 (the date on which the share transfer was completed). The scheduled date of the change is 12 August 2026 (the scheduled date of completion of the book-entry transfer procedures).
Date recognized / date notice received10 August 2026 (the date on which the Company received notice from Atom and Onto Innovation that the share transfer had been completed)
Subject EntityRigaku Holdings Corporation, Onto Innovation Inc., Atom Investment, L.P.
Target Locations / ProductsThe Company's common shares
CauseThe transfer of the Company's common shares from Atom Investment, L.P. to Onto Innovation Inc. and the resulting change in the shareholder composition
Amount of Impact on Business PerformanceNo amount has been disclosed. The Company considers the impact on its results to be immaterial.
Impact on Earnings ForecastThe impact of this change on the Company's results is immaterial. No revision to the earnings forecast has been stated.
Voting rights ownership percentage before the changeOnto Innovation: 0% (before the change). Atom Investment, L.P.: 617,741 voting rights (61,774,100 shares), 27.29%, largest shareholder. The basis is the total number of voting rights held by all shareholders as of 30 June 2026.
Voting rights ownership percentage after the changeOnto Innovation: 611,234 voting rights (61,123,436 shares), 27.00%, largest shareholder. Atom Investment, L.P.: 6,506 voting rights (650,664 shares), 0.29%. The basis is the total number of voting rights held by all shareholders as of 30 June 2026.
OutlookThe book-entry transfer procedures are scheduled to be completed on 12 August 2026. The impact of this change on results is immaterial.
Items this document does not state (14)
Accounting period in which recognizedType 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.

The transfer of the Company's common shares from Atom to Onto Innovation was completed.

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.
(Progress on Disclosed Matters) Notice Concerning Changes in the Largest Shareholder among Major Shareholders and Other Affiliated Companies | Rigaku Holdings Corporation (268A) timely disclosure | Komori