MacKenzie Scott, ex-wife of Amazon founder and Executive Chairman Jeff Bezos, gave $436 million to Habitat for Humanity International and 84 U.S. affiliates in the largest publicly disclosed gift since pledging to donate most of her wealth in 2019.

Habitat for Humanity Greater San Francisco CEO Maureen Sedonaen revealed the news in a statement Tuesday, writing, “Today, I am thrilled to formally announce that our affordable homebuilding mission has been significantly advanced, thanks to an incredible, $6.75 million gift from philanthropist MacKenzie Scott. This is part of a generous $436 million donation announced today that will expand access to affordable homeownership across the U.S.”