• 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]