Supplementary material for Kaehrle, Martin and Kristin Eschenfelder. “Justifying Biodiversity Data Access Restrictions: A Global Comparison of Data Policies.” Forthcoming in Proceedings of the Association for Information Science and Technology 62 (2025). Contents include a current copy of our codebook (250607-Codebook.pdf), a list of sampled biodiversity databases (250607b-ASIST-Sample.xlsx), and more detailed information about our sampling procedures (250607-Sampling-Information.pdf).