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Occurring Fact9278BOOKOFF GROUP HOLDINGS LIMITEDRetail

(Correction) Partial correction to "Apology and Notice Regarding the Leakage of Personal Information Due to Unauthorized Access (Report 2)"

“Occupation” and “nickname” have been added to the list of information that may have been leaked. There is no change to the publicly disclosed figures, including the number of member data records potentially subject to leakage and the number of affected individuals.

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47Recurring
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Deterioration
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Wording
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How definitive the wording is.

What was corrected and how

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

Original disclosure13 October 2026

Apology and Notice Regarding the Leakage of Personal Information Due to Unauthorized Access (2nd Report)

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)

2. Scope of impact (2) Information that may have been leaked

Before correction

Name, date of birth, gender, email address, telephone number, postal code and address registered as member information, password hash value (*1), point card number, and membership 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 (*1), point card number, and membership number

ChangesAdded “occupation” and “nickname”
Impact on Business Performance (the company’s explanation)

There is no change to the publicly disclosed information, including the number of member data records potentially subject to leakage and the number of affected individuals. There is no impact on results for the cumulative consolidated period of the first quarter. The impact of this matter on the results of our group is currently under review and has not been reflected in the consolidated earnings forecasts for the fiscal year ending May 2027.

Reason for correction

Because it was discovered that the second report had omitted “occupation” and “nickname” as items potentially subject to leakage.

What was corrected and how
ItemDetails
Disclosure subject to correctionApology and Notice Regarding the Leakage of Personal Information Due to Unauthorized Access (2nd Report)
Original disclosure date13 October 2026
Location of correction2. Scope of impact (2) Information that may have been leaked
Details of correctionName, date of birth, gender, email address, telephone number, postal code and address registered as member information, password hash value (*1), point card number, and membership number → Name, date of birth, gender, occupation, nickname, email address, telephone number, postal code and address registered as member information, password hash value (*1), point card number, and membership number
Reason for correctionBecause it was discovered that the second report had omitted “occupation” and “nickname” as items potentially subject to leakage.
Impact on Business PerformanceThere is no change to the publicly disclosed information, including the number of member data records potentially subject to leakage and the number of affected individuals. There is no impact on results for the cumulative consolidated period of the first quarter. The impact of this matter on the results of our group is currently under review and has not been reflected in the consolidated earnings forecasts for the fiscal year ending May 2027.

The reasons the company gives

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

Because it was discovered that the second report had omitted “occupation” and “nickname” from the information that may have been leaked.

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.
(Correction) Partial correction to "Apology and Notice Regarding the Leakage of Personal Information Due to Unauthorized Access (Report 2)" | BOOKOFF GROUP HOLDINGS LIMITED (9278) timely disclosure | Komori