Oprah Winfrey had not publicly sold a Gustav Klimt painting for $150 million or any specific amount. It's possible that such a sale might have occurred , or it could be a rumor or misconception.
Please note that my information might be outdated, and I don't have real-time access to current events or financial transactions. For the most accurate and up-to-date information on Oprah Winfrey's financial matters, I recommend checking reliable news sources or financial websites.