Exhibit 10.43

IN WITNESS WHEREOF, Landlord and Tenant have executed this Sixth Amendment as of the year and date above first written.

LANDLORD:
900 NORTH MICHIGAN, LLC, a Delaware limited liability company
By:	/s/ PATRICK MEARA
Print Name:	PATRICK MEARA
Title:	VICE PRESIDENT
TENANT:
GROSVENOR CAPITAL MANAGEMENT, L.P., an Illinois limited partnership
By:	/s/ Paul Meister
Print Name:	Paul Meister
Title:	Vice Chairman