Sam Altman’s OpenAI allowed employees to cash out a whopping $6.6 billion in sales of shares last October, according to a report.

More than 600 current and former workers participated and were allowed to sell up to $30 million in shares each as part of a financing round, the Wall Street Journal reported Monday, citing people familiar with the matter.

OpenAI allowed employees to sell up to $30M worth of shares each. AFP via Getty Images

About 75 employees maxed out their sales and received the full $30 million, the report said.

OpenAI bars employees from selling shares within their first two years of employment.…