there is no record of Oprah Winfrey selling a Gustav Klimt painting for $150 million. It's possible that this event occurred after i lost interest in that topic or that the information is not accurate.
Please note that financial transactions involving celebrities and private sales of valuable artworks might not always be publicly disclosed or reported in the media. If this sale occurred after 2023, you would need to search for more recent sources to find accurate information on the sale of Oprah Winfrey's Gustav Klimt painting.