TY - JOUR A1 - Neffe, C. A1 - Wilderom, C.P.M. A1 - Lattuch, F. T1 - Family firm performance through transformational CEO leadership and familiness-related team forces T2 - Leadership & Organization Development Journal N2 - Purpose. The purpose of this study is to test the role of familiness-related team forces induced by the CEO of family firms. In particular, we report on the effects of the transformational leadership style of CEOs on their respective top-management team (TMT) and firm performance when viewed through a familiness lens. Design/methodology/approach. Survey measures were taken from a snowballed sample of 72 CEOs of German family firms as well as from 245 members of their TMTs. We tested the aggregated firm-level data with objective performance indicators of the firms they led. Findings. Support was obtained for the three hypothesized team-force mediations and the four-path mediation model. The relationship between CEO’s transformational style and high family-firm performance is found to be serially mediated by TMT cohesion, behavioral integration and efficacy. Together, these three types of collective forces are assumed to be the familiness effect of a family-member CEO with a transformational leadership style. Originality. With our model we quantitatively tested familiness-type forces vis-à-vis firm performance. Theoretical and practical implications of these findings are discussed. KW - Executive Leadership, employee behaviors, Team-oriented leadership Y1 - 2024 UR - https://www.hb.fh-muenster.de/opus4/frontdoor/index/index/docId/17951 SN - 0143-7739 VL - 45 IS - im Erscheinen SP - . EP - .. ER -