Ambidexterity or the ability by individuals or firms to simultaneously and synergistically pursue both exploitation and exploration activities has been found to have positive effects on firm performance. However, the ambidexterity literature has been predominated by the studies at the organizational level, and little is known about the antecedents and consequences of ambidexterity at the individual level. This study examines environmental dynamism and social network as the antecedents of managerial ambidexterity, and knowledge brokerage and firm performance as the consequences. This study tests the mediating role of knowledge brokerage on the relationship between managerial ambidexterity and firm performance. Data are collected from 308 senior executives working in technology manufacturing firms in Malaysia using a questionnaire survey. The findings reveal that environmental dynamism and social networks are significantly and positively related to managerial ambidexterity, and knowledge brokerage mediates the relationship between managerial ambidexterity and firm performance.