On January 6, 2021, Neil Young sold half of his catalogue to Merck Mercuriadis’ Hipgnosis Song Management company. Later that year Hipgnosis merged with Blackstone in a USD$1Bn deal. However, just a month before the merger Blackstone announced that they appointed Pfizer’s former Chairman and CEO Jeffrey B Kindler as the company’s Senior Advisor.
The article goes on to say that while Kindler is no longer chairman he undoubtedly still owns a big interest in Pfizer. I'd like to see that confirmed.