When employees share knowledge with their colleagues, the efficiency of the colleagues' performance improves, which positively affects their productivity. However, employees can engage in counterproductive behavior by choosing not to share knowledge (passive behavior) or by choosing to share inaccurate knowledge with their colleagues (active behavior). In this study, we examine how providing relative performance information (RPI) and rewarding individuals with performance-based incentives can jointly affect individuals' choices to engage in counterproductive knowledge sharing behavior. Using an experiment, we identify an interactive effect of RPI and individual incentives, such that participants engage in counterproductive knowledge sharing behavior most frequently when they receive RPI and are assigned individual performance-based incentives. We also observe that RPI increases the frequency of both active and passive counterproductive knowledge sharing behavior.