[5] Al-Rumayyan sits on the boards of SoftBank Group and Reliance Industries Ltd.[6] Al-Rumayyan was made chairman of the Saudi Aramco board in September 2019 after Crown Prince Bin Salman stripped Khalid Al-Falih, the energy minister, of his duties when he questioned Bin Salman's directives.

[1] In September 2015, Al-Rumayyan was appointed managing director of the Public Investment Fund of Saudi Arabia (PIF).

[11] In October that year, PIF invested $45 billion in the newly established SoftBank Vision Fund.

[13] Al-Rumayyan was involved in the transfer of assets to PIF in the wake of the Saudi Arabian government's 2017 purge.

[14] He transferred 20 companies that had been seized by the government into the PIF,[14] including one later alleged to be used by Saudi operatives in the murder of journalist Jamal Khashoggi.

[1] Bin Salman gave Al-Rumayyan a house worth 250 million Saudi riyals (over $60m) near the presidential palace.

[1] After Trump's win in the 2024 election, he was spotted at a UFC event in Madison Square Garden with the president-elect.