80 transgender women will be randomized to either an intervention condition (receiving all TransAction activities) or a control condition (being invited to TransAction social events only). We will evaluate outcomes such as advancement along the HIV prevention/care continua, sexual risks, substance use, self-efficacy in services seeking, social support, stigma, general well-being, and quality of life at baseline, 3-month, and 6-month follow-ups. Furthermore, we will assess implementation outcomes such as fidelity, adaptation, feasibility, acceptability, and sustainability through implementation documentation, investigator evaluation, and survey/focus groups with peer facilitators and TW participants.