10:17 ET -- OpenAI is one of the most mentioned companies in the U.S. across all news items in the last 12 hours, according to Factiva data. Over 500 employees have threatened to leave the company if the current board doesn't resign and reinstate former Chief Executive Sam Altman and former President Greg Brockman. Following OpenAI's removal of Altman Friday, Microsoft said late Sunday that it hired Altman and Brockman to helm a new advanced artificial-intelligence research team, after his bid to return to OpenAI fell apart, with the board that fired him declining to agree to the proposed terms of his reinstatement. The employees said they may leave and join Altman and Brockman at Microsoft if their demands aren't met, adding that Microsoft had assured them there would be jobs available for all of them. Microsoft has invested $13 billion in OpenAI. Dow Jones & Co. owns Factiva. (chris.wack@wsj.com)

(END) Dow Jones Newswires

November 20, 2023 10:32 ET (15:32 GMT)

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