Background and career
Benjamin Zachary Bronfman (born August 6, 1982) is an American businessman and musician. Bronfman is a founding partner and board member of Global Thermostat, a direct air capture company that removes carbon dioxide from the atmosphere.
Benjamin Zachary Bronfman was born on August 6, 1982, in New York City to Black American actress Sherry Brewer Bronfman and Edgar Bronfman Jr., former chief executive officer of Warner Music Group. He has two sisters, Hannah and Vanessa. Through his paternal grandmother, Ann Loeb Bronfman, he is a member of the prominent Lehman family of Jewish Americans who founded the investment bank Lehman Brothers. Bronfman lived in London briefly when his father was managing director of Seagram Distilleries Europe. The family returned to New York in 1984 after his father became president of Seagram's US marketing division. Bronfman attended Collegiate High School in New York City, graduating in 2000. He enrolled in Emerson College in Boston, Massachusetts, where he studied politics and law.
In 2007, Bronfman became interested in direct carbon dioxide removal from the Earth's atmosphere, teamed up with Columbia University economist Graciela Chichilnisky and founded Global Thermostat, where he is a founding partner and a director. Global Thermostat completed the construction of its first pilot plant at The Stanford Research Institute in November 2010. In the year 2018, Bronfman founded DGH, an investment firm for the medical cannabis industry which invested in Bedrocan International. He then contributed as a member of the board of directors from 2018 - 2023 at Bedrocan International., a pharmaceutically focused medical cannabis API supply company in Europe.
A music enthusiast since his childhood, Bronfman met Gunnar Olsen in high school and both performed in various bands. One of those bands became an early incarnation of The Exit in 2000, when Bronfman met Jeff DaRosa, while attending Emerson College in Boston. Bronfman received a Grammy nomination for Best rap song for his contribution to Kanye West's single "New Slaves" featured on the album Yeezus. He co-produced the track "Monster", which was included on Kanye West's Grammy Award-winning album My Beautiful Dark Twisted Fantasy. Bronfman is the founder of Green Owl, which claims to be the world's first sustainability-focused record label.
Bronfman met British rapper M.I.A. in 2008. They became engaged and M.I.A. gave birth to their son on February 13, 2009. In February 2012, it was announced that they had separated.
Since 2010, Bronfman has engaged in cannabis advocacy efforts aimed at promoting legislative changes to grant patients access to cannabis. He has been on the boards of the non-profit organizations: Pioneer Works, Liberty Science Center, Americans for Safe Access, and 15 Percent Pledge. In 2017, Bronfman fought Kweku Mandela in a charity boxing match in London to raise awareness and funds against animal poaching.
Sources
Net-worth figure: Celebrity Net Worth (October 2026), in USD. Biography and career facts: the person's Wikipedia article and linked reporting. Snapshot date for all StarWorth figures: 28 October 2026.
