• Former Wall Street big-wig Marshall S. Cogan is re-listing his apartment at 810 Fifth Avenue. Cogan put the sixth-floor spread on the market for $40 million two months ago, but pulled the listing soon after. It's now up for sale again, although the price is now just $25.5 million. [P6, BHS]
• James Craige, a partner at Stone Harbor Investment Partners, paid $7.5 million for a four-bedroom duplex at 170 East End Avenue. [Cityfile]
• Alan Alda and his wife Arlene have sold their three-bedroom home in Sag Harbor for $550,000. [Newsday]