there is no record of Oprah Winfrey selling a Gustav Klimt painting for $150 million. It's possible that this event might have occurred , or it could be misinformation.
Oprah Winfrey is a well-known media mogul, talk show host, actress, and philanthropist, but there were no reports of her selling a Klimt painting for that amount up to that point.
To get the most accurate and up-to-date information on this matter, I recommend checking recent news sources or credible financial websites. Keep in mind that art sales of this magnitude often make headlines in the art world and major media outlets, so reliable sources should have coverage of such an event if it indeed occurred.