Beyoncé turned down $6M in cash for a private Uber performance in 2015 — and took equity instead. At the time, Uber was valued near $50B, putting her shares around $6M. When Uber IPO’d in May 2019 at $82B, that stake was estimated at ~$9M. Had she held until February 2021, when Uber stock peaked at $63, it could’ve reached $12–13M. There are no public filings confirming if or when she sold. The deal became public after Mila Kunis mentioned it on The Graham Norton Show. One performance. No cash.