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Business alliance9984SoftBank Group Corp.Information and Communications, Services and Others

Notice Regarding the Execution of an Additional Investment in OpenAI (Third Tranche)

SoftBank Group invested $1 billion in OpenAI as the final stage of its additional investment and completed the additional investment. As a result, its cumulative investment in OpenAI reached $6.46 billion, and its ownership interest was approximately 13%.

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Agreements reached under this partnership

9984SoftBank Group Corp.
Alliance partnerOpenAI Group PBC
Capital and personnel relationships

This indicates whether the companies will do more than work together, such as holding each other’s shares or seconding personnel (capital and business alliance).

13.00%Our ownership stake in the partner’s shares
Shareholding ratio Approximately 13%
Acquisition price$1 billion (¥1.5796 trillion)
Share Acquisition Date and Payment Date1 October 2026 (Japan time)
Agreements reached under this partnership
ItemDetails
Name of alliance partnerOpenAI Group PBC
Acquisition price$1 billion (¥1.5796 trillion)
Shareholding ratioNot disclosed → Approximately 13%
Share Acquisition Date and Payment Date1 October 2026 (Japan time)
Items this document does not state (19)
Alliance partner's business activitiesAlliance partner's locationAlliance partner's capitalAlliance partner's net salesAlliance partner's operating incomeType of allianceDetails of the allianceNumber of shares acquiredOverview of the joint ventureOwnership ratioDispatch of directors and officersContract PeriodNumerical targets under the allianceShareholding PolicyDate of board resolutionContract DateAlliance start dateImpact on Business PerformanceChange in major shareholders

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The reasons the company gives

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

The third-tranche investment was funded with proceeds from the issuance of foreign-currency-denominated senior bonds. SoftBank Group also cancelled the remaining commitment under the bridge facility and, together with the early repayment, fully repaid the facility.

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Notice Regarding the Execution of an Additional Investment in OpenAI (Third Tranche) | SoftBank Group Corp. (9984) timely disclosure | Komori