These business A-listers are skipping Saudi Arabia's big conference

Wall Street's biggest names withdrew earlier this week, as did some of Europe's top executives in finance.

The biggest question mark hangs over the attendance of US Treasury Secretary Steven Mnuchin, who is still scheduled to attend. President Donald Trump said a final call would be made by Friday.

Turkish officials have told CNN he was killed inside the consulate. Saudi authorities have so far maintained that Khashoggi left the consulate the same day, but they have provided no evidence to support the claim.

The Saudi conference, known as "Davos in the desert," is part of Crown Prince Mohammed bin Salman's plan to transform the oil-dependent economy.

These are the high-profile participants who have already pulled out:

JPMorgan Chase CEO Jamie Dimon
Ford Executive Chairman Bill Ford
Uber CEO Dara Khosrowshahi
Blackstone CEO Stephen Schwarzman
Blackrock CEO Larry Fink
MasterCard CEO Ajay Banga
Viacom CEO Bob Bakish
HSBC CEO John Flint
Credit Suisse CEO Tidjane Thiam
BNP Paribas Chairman Jean Lemierre
Societe Generale CEO Frédéric Oudéa
Standard Chartered CEO William Winters
London Stock Exchange CEO David Schwimmer
IMF Managing Director Christine Lagarde
Thrive CEO Ariana Huffington
Google Cloud CEO Diane Greene
Sinovation Ventures CEO Kai-Fu Lee
World Bank President Jim Yong Kim
Los Angeles Times owner Patrick Soon-Shiong
Economist Editor-in-Chief Zanny Minton Beddoes
New York Times columnist Andrew Ross Sorkin

The chief executives of a handful of prominent Asian and European companies — some of whom have benefited from hefty Saudi investments — are still planning to attend, or are refusing to talk about their plans.

Here's a list of big names who are still planning to participate: