Masayoshi Son, the tech tycoon who has spent billions of Saudi money, is staying away from the kingdom's major investment summit this week.
The founder and CEO of Japanese tech company SoftBank (SFTBY) won't attend the Future Investment Initiative in Riyadh, a person familiar with the matter told CNN on Wednesday.
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Dozens of other top business leaders have canceled plans to take part in the event, which is widely known as "Davos in the desert," following international uproar over the killing of Saudi journalist Jamal Khashoggi.
But Son's ties to the kingdom and its de facto leader, Crown Prince Mohammed bin Salman, are particularly strong. Over the past few years, he has become Saudi Arabia's most important partner in the tech world.
Son was the star guest at the conference last year, sitting alongside the prince at the glitzy Ritz-Carlton hotel in Riyadh. When bin Salman made a brief appearance at this year's event on Tuesday, Son was nowhere to be seen. A front row seat reserved for him was empty.
Son met high-ranking government officials in Saudi Arabia ahead the conference but left the country before it started, the person familiar with the matter said.
SoftBank declined to comment on his absence from the event.
Son and his chief operating officer, Marcelo Claure, were both named as speakers by the Future Investment Initiative before a host of top names began canceling plans to attend.
Neither are now listed as speakers, although Son is mentioned as a member of the conference's advisory panel.
The company was represented in a conference session on Tuesday by a lower-ranking executive, Saleh Romeih, a managing partner at SoftBank Investment Advisers.
The exodus of executives from the Saudi conference — including the CEOs of JPMorgan Chase (JPM), Uber and Siemens (SIEGY) — has dealt a big blow to the event. The gathering is part of efforts by bin Salman to transform the country's economy and shake off its reliance on oil.
Son has positioned himself as a key player in those plans, persuading bin Salman to provide $45 billion for a giant tech fund and committing SoftBank to help with some of Saudi Arabia's showcase projects.
The CEO used Saudi Arabia's oil riches to help him become one of the world's most powerful tech investors.
The kingdom provided nearly half the money for SoftBank's $93 billion tech-focused Vision Fund, which has made big investments in startups such as WeWork and Slack.
Romeih, who helps manage the fund, said Tuesday that it had recently opened offices in Saudi Arabia and the United Arab Emirates.
SoftBank has also promised to help the Saudi crown prince in his efforts to shift the country's oil-dependent economy toward new industries such as technology and renewable energy.