Applying value relevance analysis to a sample of European banks, we test the following: (i) the direct effects of the sustainability report on stock price; (ii) whether the report modifies the value relevance of financial accounting variables (indirect effects); and (iii) whether the value relevance of sustainability reports varies across countries. Results show that investors appreciate the additional and complementary disclosure provided by the sustainability report and that this disclosure produces a positive effect on stock prices. Estimates of the indirect (...) effects demonstrate that it has a negative influence on book value per share, whereas the effect on earnings per share is not significant. Cross-country analysis shows that the value relevance of the sustainability report varies across European countries, consistent with the hypothesis that the value relevance of the sustainability report is likely to be influenced by different institutional contexts. (shrink)