The average number of board committees among S&P 1500 companies has remained relatively stable at 4 committees per corporate board over the three-year period from 2008 to 2010, according to executive compensation data firm Equilar.

“Among S&P 1500 boards, the majority of boards (68 percent) have either three or four committees (2010). The most common committees are, unsurprisingly, the audit, compensation, and governance committees,” it said in the 2011 Board Composition Series Report.