The Getty Trust expands its board from 12 to 16. “The newcomers — Stewart A. Resnick, William E.B. Siart, Mark S. Siegel and Peter J. Taylor — bring a long list of financial and educational credentials at a time when critics have accused the trust’s sitting board of inattention. But the newcomers’ lack of arts expertise and diversity prompted board member Ramon Cortines to step down from his role on the board’s nominating committee.”