The Global Reporting Initiative (GRI) has released the fourth major revision of its Sustainability Reporting Guidelines, dubbed ‘G4’. The GRI’s guidelines are widely used in preparing sustainability reports and are designed to provide a standardised approach to reporting on economic, environmental, social and governance (ESG) performance. The revised guidelines are intended to be easier to use, place a greater emphasis on materiality in sustainability reporting, and include new and updated disclosures in various areas, including governance, ethics and integrity, supply chain, anti-corruption and greenhouse gas (GHG) emissions.