The PRI helps its signatories to make progress on implementing the six Principles and incorporate environmental, social and governance (ESG) factors into investment and ownership decisions. Considering ESG risk and opportunity in the supply chains of investee companies has traditionally been the elephant in the room, particularly in private markets where transparency, disclosure and company capacity to manage supply chains may be limited. Yet, the business case for effective management of ESG risk, including in the supply chain, is clear; the only way to guarantee peace of mind when managing risk to company value is to address the topic with investee companies. This guide provides practical initial steps investors can take to assess and manage supply chain risk. Collectively, investors can be at the forefront of driving the management of ESG risks in the supply chain up the corporate agenda.