{"entity":{"id":957,"slug":"masayoshi-son","name":"Masayoshi Son","type":"person","role":"Founder, Chairman and CEO of SoftBank Group Corp, ultimate controller of Vision Fund","description":null,"imageUrl":null,"createdAt":"2026-04-09T14:30:55.279Z","updatedAt":"2026-05-19T09:21:22.569Z"},"electedOffice":null,"significance":{"score":8.8,"components":{"totalFindings":0,"connectionDegree":6.8,"recentFindings90d":0,"activeResearchJobs":0,"goblinAttributions":2,"recentSyntheses90d":0,"moneyFlowChainsTotal":0,"closedLoopMemberships":0,"moneyFlowHopsRecent90d":0},"computedAt":"2026-10-16T01:34:31.424Z"},"facts":[{"id":12077,"text":"Masayoshi Son owns 29.68% of SoftBank Group Corp as of March 31, 2025","confidence":"primary","dateOccurred":"2025-03-31","source":{"title":"SoftBank Group Corp ownership disclosures","url":"https://visionfund.com/portfolio","publication":"Directed Inquiry — Web Search"}},{"id":22663,"text":"Masayoshi Son filed filing with the SEC on 2010-06-17. Accession number: N/A.","confidence":"secondary","dateOccurred":"2010-06-17","source":{"title":"SEC EDGAR: filing — Masayoshi Son (2010-06-17)","url":"https://efts.sec.gov/LATEST/search-index?q=%22Masayoshi%20Son%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q","publication":"SEC EDGAR"}},{"id":22667,"text":"Search scope note: No parliamentary records found for \"Masayoshi Son\" in automated database search as of 2026-04-23. This reflects search coverage limits, not confirmed absence from public record.","confidence":"inferential","dateOccurred":null,"source":null},{"id":22666,"text":"Search scope note: No court records found for \"Masayoshi Son\" in automated database search as of 2026-04-23. This reflects search coverage limits, not confirmed absence from public record.","confidence":"inferential","dateOccurred":null,"source":null},{"id":22665,"text":"Search scope note: No lobbying disclosures found for \"Masayoshi Son\" in automated database search as of 2026-04-23. This reflects search coverage limits, not confirmed absence from public record.","confidence":"inferential","dateOccurred":null,"source":null},{"id":22664,"text":"Search scope note: No fec donations found for \"Masayoshi Son\" in automated database search as of 2026-04-23. This reflects search coverage limits, not confirmed absence from public record.","confidence":"inferential","dateOccurred":null,"source":null}],"connections":[{"id":21181,"relationshipType":"Ultimate Beneficial Owner / Founder","description":"Masayoshi Son is the founder and chairman of SoftBank Group, which ultimately controls SB Delta Fund (Jersey) L.P. through its investment advisory and GP entities.","confidence":"inferential","firstDocumented":"2026","lastDocumented":null,"other":{"id":968,"name":"SB Delta Fund (Jersey) L.P.","slug":"sb-delta-fund-jersey-l-p","type":"company"}},{"id":17916,"relationshipType":"affiliation","description":"Through Mubadala's investment in the SoftBank Vision Fund, Tahnoun bin Zayed has a documented business relationship with SoftBank founder Masayoshi Son.","confidence":"inferential","firstDocumented":"2017","lastDocumented":null,"other":{"id":925,"name":"Tahnoun bin Zayed Al Nahyan","slug":"tahnoun-bin-zayed-al-nahyan","type":"person"}},{"id":14715,"relationshipType":"Ultimate beneficial owner / principal","description":"Masayoshi Son is the founder and principal of SoftBank, the parent group that owns/controls SB Delta Fund GP (Jersey) Ltd through its investment advisory chain.","confidence":"inferential","firstDocumented":"2026","lastDocumented":null,"other":{"id":967,"name":"SB Delta Fund GP (Jersey) Ltd","slug":"sb-delta-fund-gp-jersey-ltd","type":"company"}},{"id":14703,"relationshipType":"Corporate Leadership","description":"Masayoshi Son is the founder and CEO of SoftBank Group, which is the parent of SoftBank Investment Advisers, making him the ultimate leadership figure connected to SB Investment Advisers (US) Inc.","confidence":"inferential","firstDocumented":"2022","lastDocumented":null,"other":{"id":966,"name":"SB Investment Advisers (US) Inc.","slug":"sb-investment-advisers-us-inc","type":"company"}},{"id":14684,"relationshipType":"affiliation","description":"Masayoshi Son, founder of SoftBank, is listed near Custody Bank of Japan, suggesting the bank may provide custody services for SoftBank-related assets.","confidence":"inferential","firstDocumented":"2026","lastDocumented":null,"other":{"id":965,"name":"Custody Bank of Japan","slug":"custody-bank-of-japan","type":"institution"}},{"id":14421,"relationshipType":"investor","description":"Japan Trustee Services Bank acts as a trustee for SoftBank Group Corp, majority-owned by Masayoshi Son","confidence":"inferential","firstDocumented":"2020","lastDocumented":null,"other":{"id":964,"name":"Japan Trustee Services Bank","slug":"japan-trustee-services-bank","type":"institution"}},{"id":14420,"relationshipType":"investor","description":"The Master Trust Bank of Japan acts as a trustee for SoftBank Group Corp, majority-owned by Masayoshi Son","confidence":"inferential","firstDocumented":"2020","lastDocumented":null,"other":{"id":963,"name":"The Master Trust Bank of Japan","slug":"the-master-trust-bank-of-japan","type":"institution"}},{"id":14419,"relationshipType":"organizational link","description":"Rajeev Misra was the CEO of SoftBank Investment Advisers, which manages the Vision Fund under Masayoshi Son's leadership","confidence":"inferential","firstDocumented":"2017","lastDocumented":null,"other":{"id":969,"name":"Rajeev Misra","slug":"rajeev-misra","type":"person"}},{"id":14418,"relationshipType":"organizational link","description":"Alex Clavel is a managing partner at SoftBank Investment Advisers, which is part of Masayoshi Son's SoftBank Group","confidence":"inferential","firstDocumented":"2020","lastDocumented":null,"other":{"id":958,"name":"Alex Clavel","slug":"alex-clavel","type":"person"}},{"id":14417,"relationshipType":"affiliation","description":"The Saudi Public Investment Fund is the largest investor in SoftBank Vision Fund, which is managed by Masayoshi Son's SoftBank Group","confidence":"inferential","firstDocumented":"2017","lastDocumented":null,"other":{"id":122,"name":"Saudi Public Investment Fund (PIF)","slug":"saudi-public-investment-fund-pif","type":"institution"}},{"id":14416,"relationshipType":"affiliation","description":"Mubadala Investment Company is a major investor in SoftBank Vision Fund, which is controlled by Masayoshi Son's SoftBank Group","confidence":"inferential","firstDocumented":"2017","lastDocumented":null,"other":{"id":962,"name":"Mubadala Investment Company","slug":"mubadala-investment-company","type":"company"}},{"id":14415,"relationshipType":"organizational link","description":"Masayoshi Son's SoftBank Group controls SVF GP (Jersey) Limited, the general partner of the Vision Fund","confidence":"inferential","firstDocumented":"2017","lastDocumented":null,"other":{"id":954,"name":"SVF GP (Jersey) Limited","slug":"svf-gp-jersey-limited","type":"company"}},{"id":14414,"relationshipType":"organizational link","description":"Masayoshi Son's SoftBank Group owns SB Investment Advisers (UK) Limited, which manages the Vision Fund","confidence":"inferential","firstDocumented":"2017","lastDocumented":null,"other":{"id":952,"name":"SB Investment Advisers (UK) Limited","slug":"sb-investment-advisers-uk-limited","type":"company"}},{"id":14413,"relationshipType":"organizational link","description":"Masayoshi Son is the founder and CEO of SoftBank Group Corp, which controls SoftBank Vision Fund","confidence":"inferential","firstDocumented":"2017","lastDocumented":null,"other":{"id":121,"name":"SoftBank Vision Fund","slug":"softbank-vision-fund","type":"company"}},{"id":14382,"relationshipType":"affiliation","description":"Masayoshi Son is the founder and CEO of SoftBank Group, the parent entity of SoftBank Investment Advisers.","confidence":"inferential","firstDocumented":"2021","lastDocumented":null,"other":{"id":956,"name":"SoftBank Investment Advisers","slug":"softbank-investment-advisers","type":"company"}},{"id":14323,"relationshipType":"affiliation","description":"Masayoshi Son is the CEO and founder of SoftBank Group; SB Global Advisers Limited, as a SoftBank-related entity, is organizationally associated with him.","confidence":"inferential","firstDocumented":"2023","lastDocumented":null,"other":{"id":953,"name":"SB Global Advisers Limited","slug":"sb-global-advisers-limited","type":"company"}},{"id":14412,"relationshipType":"regulatory_filing","description":"Masayoshi Son filed a filing with the SEC on 2010-06-17","confidence":"primary","firstDocumented":"2010","lastDocumented":null,"other":{"id":391,"name":"Securities and Exchange Commission","slug":"securities-and-exchange-commission","type":"government_agency"}}],"contradictions":[],"permalink":"https://www.goblinhouse.net/entity/masayoshi-son","timelineUrl":"https://www.goblinhouse.net/entity/masayoshi-son/timeline"}