Alexander C. Kornman bought a condo at 200 E. 89th St. in Yorkville from Nenita Marzo for $620,000 on Sep. 23.

Unit #20F is in The Monarch, which was built in 1987, has 253 units in 43 floors.

Mr. Kornman is an associate at Macquarie Bank in New York City. He received a B.S. in mathematics and physics from the University of St. Andrews.

According to BlockShopper.com, there have been condo 198 sales in Yorkville during the past 12 months, with median sales price of $610,000.

Address: 200 East 89th Street, Unit: 20f
Buyer(s): Kornman and Alexander C
Seller(s): Marzo and Nenita
Sale date: Sep. 23, 2009