We examine the relation between insiders' share pledging and the cost of bank loans of Taiwanese listed firms. Specifically, we investigate whether banks charge firms different rates when the insiders pledge shares for their personal loans. We find that bank loan spreads are positively related to insiders' share pledging, especially for closely-held firms with controlling shareholders. The effects of insiders share pledging on bank loans are more prominent for non-syndicated loans (lower risk-sharing effect) and loans with shorter maturity (severer information problem), indicating that the risk engendered by share pledging is an important factor in bank loan contracting.