ByKyle Khan-Mullins,

Forbes Staff.

T

he list of billionaires and companies who have donated to help build a gigantic gilded ballroom where the East Wing of the White House used to be has plenty of familiar names on it. Amazon. Apple. Comcast. Miriam Adelson. The Winklevoss twins. And then, there’s Stefan E. Brodie.

Brodie, it turns out, is one more billionaire. He and his brother Donald cofounded Purolite, a company that manufactures resins used for water purification across a range of industries, then sold it to chemicals giant Ecolab in 2021 for $3.7 billion. When Steve Brodie showed up on the Trump ballroom donor list, he raised his profile—and now, he and his brother are the newest members of the Forbes Billionaires List. Assuming they owned the company 50/50, they’re each worth about $1.7 billion today, Forbes estimates.