(Correction) Partial correction to the "Consolidated Financial Results Presentation Materials for the Fiscal Year Ending March 2026" | Internet Initiative Japan Inc. (3774) timely disclosure

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The document this correction applies to

Timely disclosure

Consolidated Financial Results Presentation for the Fiscal Year Ending March 2026 (FY25)2026-05-14

What was corrected and how

A subsequent correction by the company to the contents of an already published filing.

Original disclosure14 May 2026

Consolidated Results Presentation Materials for the Fiscal Year Ending March 2026

Open the original document

8 daysThe pre-correction wording stayed published for this period (Calculated from the Original Disclosure Date Indicated in the Document)

This correction2026-05-22

Location of correction (where in the original document)

Page 11 of the "Consolidated Results Presentation Materials for the Fiscal Year Ending March 2026," II-6. System Integration (SI), ① Revenue Trends

Impact on Business Performance (the company’s explanation)

There is no impact on the forecast figures for consolidated revenue or profit for the fiscal year ending March 2027, and these forecasts have not been changed.

Reason for correction

A calculation error was identified in certain figures for the system integration order backlog, specifically the estimated forecast figures for the portion of the system operation and maintenance order backlog scheduled to be recognized as revenue in fiscal 2026.

What was corrected and how
Item	Details
Disclosure subject to correction	Consolidated Results Presentation Materials for the Fiscal Year Ending March 2026
Original disclosure date	14 May 2026
Location of correction	Page 11 of the "Consolidated Results Presentation Materials for the Fiscal Year Ending March 2026," II-6. System Integration (SI), ① Revenue Trends
Reason for correction	A calculation error was identified in certain figures for the system integration order backlog, specifically the estimated forecast figures for the portion of the system operation and maintenance order backlog scheduled to be recognized as revenue in fiscal 2026.
Impact on Business Performance	There is no impact on the forecast figures for consolidated revenue or profit for the fiscal year ending March 2027, and these forecasts have not been changed.

Items this document does not state (1)

Details of correction

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.

A calculation error was identified in the estimated forecast figures for the portion of the system operation and maintenance order backlog scheduled to be recognized as revenue in fiscal 2026.

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