Complex sentence: Changing World Technologies (CWT), a privately-held company, was founded in August 1997 by Brian S. Appel, the current Chairman and Chief Executive Officer of CWT and its subsidiaries.
Split into simpler sentences: Changing World Technologies (CWT), a privately held company, was founded in August 1997 by Brian S. Appel. Brian Appel is now the Chairman and Chief Executive Officer of Changing World Technologies, Inc. (CWT) and its subsidiaries.