Cushman sues Sotheby’s over $10M commission tied to HQ sale

Sotheby’s stiffed Cushman & Wakefield on a $10 million commission tied to the auction house’s blockbuster Upper East Side headquarters sale, the brokerage claims. In a lawsuit filed Thursday in New York State Supreme Court, Cushman accuses Sotheby’s of breaching a commission agreement connected to the October 2025 sale of 1334 York Avenue to Weill Cornell Medicine.  Cushman claims it spent years brokering a 200,000-square-foot lease at the building on behalf of Weill Cornell that ultimately paved the way for the $510 million sale. At the time of the 2023 lease signing, Cushman says both sides inked a separate agreement […] This article originally appeared on The Real Deal. Click here to read the full story.