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Earnings presentation9278BOOKOFF GROUP HOLDINGS LIMITEDRetail

(Correction) Partial correction to the "Supplementary Financial Information for the First Quarter of the Fiscal Year Ending May 2027"

For the supplementary materials for the first-quarter financial results published on 13 October 2026, “occupation” and “nickname” have been added to the items that may involve personal information leakage. There are no changes to the other published information, including the number of member data records and individuals potentially affected by the leakage.

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What was corrected and how

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

Original disclosure13 October 2026

Supplementary Materials for the First Quarter of the Fiscal Year Ending May 2027

Open the original document
3 daysThe pre-correction wording stayed published for this period (Calculated from the Original Disclosure Date Indicated in the Document)
This correction2026-10-16
Location of correction (where in the original document)

Page 2: Apology: Regarding the Leakage of Personal Information Due to Unauthorized Access ②: Information Potentially Subject to Leakage

Before correction

Name, date of birth, gender, email address, telephone number, postal code and address registered as member information, password hash value (※2), point card number, member number

After correction

Name, date of birth, gender, occupation, nickname, email address, telephone number, postal code and address registered as member information, password hash value (※2), point card number, member number

ChangesAdded “occupation” and “nickname” to the items potentially subject to leakage
Impact on Business Performance (the company’s explanation)

This correction adds “occupation” and “nickname” to the items potentially subject to leakage. There are no changes to the number of member data records or individuals potentially affected by the leakage, or to any other published information. There is no impact on first-quarter results. The impact on the full-year earnings forecast is currently under review.

Reason for correction

Because it was found that “occupation” and “nickname” had been omitted from the items potentially subject to leakage.

What was corrected and how
ItemDetails
Disclosure subject to correctionSupplementary Materials for the First Quarter of the Fiscal Year Ending May 2027
Original disclosure date13 October 2026
Location of correctionPage 2: Apology: Regarding the Leakage of Personal Information Due to Unauthorized Access ②: Information Potentially Subject to Leakage
Details of correctionName, date of birth, gender, email address, telephone number, postal code and address registered as member information, password hash value (※2), point card number, member number → Name, date of birth, gender, occupation, nickname, email address, telephone number, postal code and address registered as member information, password hash value (※2), point card number, member number
Reason for correctionBecause it was found that “occupation” and “nickname” had been omitted from the items potentially subject to leakage.
Impact on Business PerformanceThis correction adds “occupation” and “nickname” to the items potentially subject to leakage. There are no changes to the number of member data records or individuals potentially affected by the leakage, or to any other published information. There is no impact on first-quarter results. The impact on the full-year earnings forecast is currently under review.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

Because it was found that “occupation” and “nickname” had been omitted from the information potentially subject to leakage.

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.
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Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
(Correction) Partial correction to the "Supplementary Financial Information for the First Quarter of the Fiscal Year Ending May 2027" | BOOKOFF GROUP HOLDINGS LIMITED (9278) timely disclosure | Komori