Masayoshi Son
Also known as masason
Founder, chairman and CEO of SoftBank Group; chairman of Arm.
At a glance
Roles
SoftBank Group (Chairman & CEO)
Connections
Taizo Son
Also on this page: Key facts · Links · Sources · Related pages
- Masayoshi Son founded SoftBank in Tokyo in 1981 and runs it as chairman and CEO.
- He studied economics at UC Berkeley.
- SoftBank bought Arm in 2016 and he chairs it.
- He launched the Vision Fund in 2017 and was named chairman of the Stargate venture in January 2025.
Why it matters
- For people following tech investment: through SoftBank he is one of OpenAI's largest backers and controls Arm, whose chip designs run most phones.
Key facts
- Current role
- Representative Director, Chairman & CEO, SoftBank Group2
- Born
- 11 August 1957, Tosu, Saga Prefecture, Japan2
- Education
- BA in economics, UC Berkeley (1980)1
- SoftBank
- Founded Nihon SoftBank in September 19812
- Alibaba
- Director from October 2005 to June 20202
- Vodafone K.K.
- Chairman, president and CEO from April 2006; now SoftBank Corp.2
- Arm
- Chairman from September 2016; chairman and director of Arm Holdings plc since August 20232
- Vision Fund
- Launched in 2017 with a planned $100 billion1
- Stargate
- Named chairman of Stargate LLC in January 20251
- Net worth
- $100.7 billion (Forbes real-time list, 2 June 2026)1
Roles
Leads
- SoftBank GroupOrganization
Chairman & CEO; Representative Director source on SoftBank Group
Founded
Connections
Related
- Taizo Sonyoungest brother; founded GungHo Online Entertainment and Mistletoe
Links
Sources
Last checked against its sources today
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