Purpose: Knowledge sharing between supply chain partners is central for a successful implementation of green logistics practices. The aim of this paper is therefore: to increase the understanding on how knowledge is shared in the transformation towards environmentally sustainable logistics.

Design/methodology/approach: A longitudinal case study approach has been applied including one logistics service provider (LSP) and one of its most proactive customers. Five strategical meetings with several participants from both organizations have been the main source of empirical data.

Findings: An informal and interactive dialogue between different managers from both organisations is the main type of knowledge sharing applied. The knowledge exchanged are commonly familiar and local for one actor, while very distant for the other. The knowledge shared can to a large extent be described as complex and thereby difficult to codify and imitate.

Research limitations/implications (if applicable): The study provides insights to not only how and what forms of knowledge is shared, but also on why and when a close, but also time-consuming, form of interaction is needed. A research agenda for future studies within knowledge sharing for sustainable logistics is suggested.

Practical implications (if applicable): This study provides insights to both LSPs and Shippers on how to share knowledge to facilitate a rapid transfer towards greener logistics.

Social implications (if applicable): Provides insights supporting the greening of logistics as well as the social aspects of supply chain interaction.

Original/value: This study targets a research gap in terms of providing a deeper understanding of the type of knowledge shared and the different forms of knowledge sharing.