Complex sentence: Richard B. Brewer is on the board of directors of several companies, including SRI International, chairman of the board of ARCA biopharma and Dendreon Corporation, and executive chairman of Nile Therapeutics.
Split into simpler sentences: Richard B. Brewer is on the board of directors of several companies, including SRI International. He is chairman of the board of ARCA biopharma and Dendreon Corporation, and is executive chairman of Nile Therapeutics.