• Hedge funder Scott Bommer and his wife Donya have lowered the price of their 29th-floor apartment at the Ritz-Carlton, which they purchased for $28.5 million last July and put on the market for $35 million in November. It's now listed at $29.75 mil. [Cityfile, Corcoran]
• Jeff Koons has closed on the purchase of a six-story townhouse at 11 East 67th Street for $12 million, two years after he first went into contract. [NYP]
• Loews heiress Laurie Tisch—daughter Bob and Joan, sister of Jonathan and Steve—paid $29 million for a 13th-floor apartment at 834 Fifth Avenue. Her new upstairs neighbor? Rupert Murdoch. [NYO, previously]
• Former Lehman exec Jack Rivkin has put his 7,000-square-foot home off Further Lane in Amagansett on the market for $31 million. [Newsday, Sotheby's]

♦ Julian Schnabel has slashed the price of the triplex penthouse atop the Palazzo Chupi (left) in the West Village. The apartment is now $24 million instead of $29.5 million. [NYP, Corcoran]
♦ Art dealer Dominique Lévy and her partner, producer Dorothy Berwin, paid $12 million for a six-bedroom duplex at 170 East End Ave. Their new neighbors will include Mets pitcher Johan Santana and Vornado president Michael Fascitelli. [Real Deal]
♦ The former head of Lehman's mortgage banking group, Kurt Locher, paid $5.25 million for a five-bedroom apartment at 500 West End Avenue. Meanwhile, his former apartment at 1165 Park is still on the market for $2.495 million. [NYO]