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Occurring Fact4591RIBOMIC Inc.Pharmaceuticals

Notice Regarding Changes to the Accounting Auditor

保森監査法人 will retire upon expiration of its term and is scheduled to change to 史彩監査法人, subject to approval at the general meeting of shareholders.

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Change in Accounting Auditor

Subject Entity

RIBOMIC Inc. (filing company)

Occurrence23 June 2026 (scheduled date of the change and scheduled date of the 23rd Annual General Meeting of Shareholders)
Awareness or receipt of notice16 April 2026 (date on which the Company received notification from 保森監査法人 of its wish to terminate the engagement upon expiration of its term)
This disclosure05/20/2026
Cause

保森監査法人, the current accounting auditor, notified the Company that it wished to terminate the engagement upon expiration of its term due to concerns regarding the new executive structure, under which the executive in charge of administration (Head of the Administration Division) and all 3 Audit & Supervisory Board Members were excluded from the list of candidates for executive positions. The Company placed importance on agile audits suited to the nature and scale of its operations.

Outlook

The Company will submit the proposal entitled "Election of Accounting Auditor" to the 23rd Annual General Meeting of Shareholders scheduled to be held on 23 June 2026.

Event that occurred
ItemDetails
Event nameChange in Accounting Auditor
Date of occurrence23 June 2026 (scheduled date of the change and scheduled date of the 23rd Annual General Meeting of Shareholders)
Date recognized / date notice received16 April 2026 (date on which the Company received notification from 保森監査法人 of its wish to terminate the engagement upon expiration of its term)
Subject EntityRIBOMIC Inc. (filing company)
Cause保森監査法人, the current accounting auditor, notified the Company that it wished to terminate the engagement upon expiration of its term due to concerns regarding the new executive structure, under which the executive in charge of administration (Head of the Administration Division) and all 3 Audit & Supervisory Board Members were excluded from the list of candidates for executive positions. The Company placed importance on agile audits suited to the nature and scale of its operations.
OutlookThe Company will submit the proposal entitled "Election of Accounting Auditor" to the 23rd Annual General Meeting of Shareholders scheduled to be held on 23 June 2026.
Items this document does not state (19)
Target Locations / ProductsAmount of Impact on Business PerformanceAccounting 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' liabilityVoting rights ownership percentage before the changeVoting rights ownership percentage after the changePlanned 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.

保森監査法人 notified the Company that it wished to terminate the engagement upon expiration of its term due to concerns regarding the new executive structure. The Company selected 史彩監査法人 after comprehensively assessing its expertise, independence, audit structure, quality control structure, and estimated audit fees, while placing importance on agile audits suited to the nature and scale of the Company's operations.

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Notice Regarding Changes to the Accounting Auditor | RIBOMIC Inc. (4591) timely disclosure | Komori