The Centers for Disease Control and Prevention (CDC) launched the Partnering for Vaccine Equity (P4VE) program in 2020 to address racial and ethnic disparities in adult immunization rates, particularly for COVID-19 and influenza. In 2021, P4VE directed $156 million to over 500 national, state, and community-based organizations (CBOs) to improve equitable access to vaccination in communities by promoting vaccine confidence and addressing barriers to vaccination opportunities.The Urban Institute is partnering with CDC to support a subset of CBOs participating in the P4VE program. In the first year of the P4VE initiative (April 30, 2021, to April 29, 2022), the Urban Institute provided grant subawards and tailored program support and technical assistance to 29 CBOs. This report presents findings from an evaluation of CBOs' performance on P4VE program objectives in the first year, including challenges and successes CBOs experienced in their efforts to improve vaccine equity