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M&A and Subsidiary Changes9658BUSINESS BRAIN SHOWA・OTA INC.Information and Communications, Services and Others

(Correction to Disclosed Information) Notice Regarding the Acquisition of All Shares of System One Co., Ltd. (Making It a Wholly Owned Subsidiary)

Regarding the disclosure dated 28 May 2026, the number of shares held and ownership interest of Shio Miyanari (宮成志緒), the counterparty for the share acquisition, were corrected from 24 shares and 12.0% to 25 shares and 12.5%, respectively. The information concerning Akisada Mitani (三谷明定) and Akie Mitani (三谷秋恵) remains unchanged.

Worth reading
19Immaterial
0–100. This measures how worthwhile something is to read, not how good or bad the company is.
Direction
Neutral
Direction inferred from the company’s description.
Scale
1
Shares (the ownership interest was corrected by 0.5 percentage points)
Wording
Definitive
How definitive the wording is.

This transaction

Acquisition of All Shares of System One Co., Ltd. (Making It a Wholly Owned Subsidiary)
CounterpartyMitani Akisada (三谷明定), Miyanari Shio (宮成志緒), Mitani Akie (三谷秋恵)
Disclosing companyBUSINESS BRAIN SHOWA・OTA INC.
株式会社システムワンSubject of this transactionNumber of shares acquired All shares (the counterparties' holdings are stated as 174 shares, 25 shares and 1 share, respectively) / number of voting rights: Not disclosed
Impact on Business Performance

This correction will have no impact on financial results.

This transaction
ItemDetails
Transaction nameAcquisition of All Shares of System One Co., Ltd. (Making It a Wholly Owned Subsidiary)
Counterparty nameMitani Akisada (三谷明定), Miyanari Shio (宮成志緒), Mitani Akie (三谷秋恵)
Name of the Subject Company株式会社システムワン
Number of shares acquiredAll shares (the counterparties' holdings are stated as 174 shares, 25 shares and 1 share, respectively) / number of voting rights: Not disclosed
Impact on Business PerformanceThis correction will have no impact on financial results.
Items this document does not state (27)
Business Description of the Subject CompanyLocation of the Subject CompanyCapital Stock of the Subject CompanyDate of Establishment of the Subject CompanyNet Sales of the Subject CompanyOperating Profit of the Subject CompanyNet Income of the Subject CompanyNet Assets of the Subject CompanyAcquisition priceExpenses other than the acquisition priceType of ConsiderationMerger ratio/share exchange ratioTender offer priceMinimum number of shares to be purchasedTender offer periodVoting rights ownership percentageFunding arrangementsGoodwill amountAmount of extraordinary income (loss)Date of board resolutionContract DateExecution Date / Effective DateValuation methodologyIndependent valuation institutionSpecial CommitteeConditions Precedent to ExecutionManagement structure after acquisition

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.

Because the disclosure dated 28 May 2026 contained an error.

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 to Disclosed Information) Notice Regarding the Acquisition of All Shares of System One Co., Ltd. (Making It a Wholly Owned Subsidiary) | BUSINESS BRAIN SHOWA・OTA INC. (9658) timely disclosure | Komori