This document discusses best practices for sharing research data. It begins by noting that data sharing is often required by journals, funders, and professional societies. It then provides guidance on several key aspects of planning for data sharing: 1) Do not promise to destroy data or limit its future use or access. Instead, plan to use a reputable data repository. 2) Consider risks of re-identification and invest in de-identification. Get consent to retain and broadly share data that explains the benefits and protections. 3) Work with your IRB to incorporate data sharing plans and get approval for previously collected data where consent was silent on sharing. Factors like feasibility of recontact and sensitivity of data can increase