Complex sentence: David Wood (July 1,1963-2006) was Executive Director of the GrassRoots Recycling Network (GRRN), in Madison, Wisconsin; and organizing director of the nationwide Computer TakeBack Campaign (CTBC).
Split into simpler sentences: David Wood (July 1,1963-2006) was former Executive Director of the GrassRoots Recycling Network (GRRN), situated in Madison, Wisconsin. He was organizing director of the US nationwide Computer TakeBack Campaign (CTBC).