Complex sentence: USG moved its corporate headquarters to 125 S. Franklin in Chicago in 1992, and again in March 2007 to 550 West Adams street Chicago, ILL 60661.
Split into simpler sentences: USG moved its corporate headquarters to 125 S. Franklin in Chicago in 1992. We moved in March 2007 the Company HQ relocated to 550 West Adams street Chicago, ILL 60661.