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Occurring Fact4875MediciNova,Inc.Pharmaceuticals

Notice of Filing Submission Regarding an Extension of the Deadline for Filing the Semiannual Report

The company submitted a written notification to the Director-General of the Kanto Local Finance Bureau stating that the reasons requiring approval for an extension of the filing deadline for the semiannual report for the fiscal year ending December 2026 had neither ceased to exist nor changed.

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Submission of a written notification stating that the reasons requiring approval for an extension of the filing deadline for the semiannual report for the fiscal year ending December 2026 had neither ceased to exist nor changed

Subject Entity

MediciNova, Inc.

Target Locations / Products

Interim report for the fiscal year ending December 2026

OccurrenceDate on which the written notification was submitted, 17 July 2026 (Japan time)
This disclosure07/17/2026
Cause

The reasons requiring approval for an extension of the filing deadline for the semiannual report had neither ceased to exist nor changed

Related procedures

Type

Submission of a written notification regarding an extension of the filing deadline for the semiannual report

Court or authority

Director-General of the Kanto Local Finance Bureau

Accounting period in which recognized

Accounting period covered by the semiannual report for the fiscal year ending December 2026

Outlook

The company submitted a written notification stating that, with respect to the semiannual report for the fiscal year ending December 2026, the reasons requiring approval for an extension of the filing deadline had neither ceased to exist nor changed.

Event that occurred
ItemDetails
Event nameSubmission of a written notification stating that the reasons requiring approval for an extension of the filing deadline for the semiannual report for the fiscal year ending December 2026 had neither ceased to exist nor changed
Date of occurrenceDate on which the written notification was submitted, 17 July 2026 (Japan time)
Subject EntityMediciNova, Inc.
Target Locations / ProductsInterim report for the fiscal year ending December 2026
CauseThe reasons requiring approval for an extension of the filing deadline for the semiannual report had neither ceased to exist nor changed
Accounting period in which recognizedAccounting period covered by the semiannual report for the fiscal year ending December 2026
Type of litigation or proceedingSubmission of a written notification regarding an extension of the filing deadline for the semiannual report
Court or authorityDirector-General of the Kanto Local Finance Bureau
OutlookThe company submitted a written notification stating that, with respect to the semiannual report for the fiscal year ending December 2026, the reasons requiring approval for an extension of the filing deadline had neither ceased to exist nor changed.
Items this document does not state (16)
Date recognized / date notice receivedAmount of Impact on Business PerformanceImpact on Earnings ForecastPlaintiffDefendantDate 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.

The reasons stated in the application for requiring approval to extend the filing deadline for the semiannual report had neither ceased to exist nor changed.

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 Filing Submission Regarding an Extension of the Deadline for Filing the Semiannual Report | MediciNova,Inc. (4875) timely disclosure | Komori