Over the past decade, the Eastern Academic Scholars’ Trust (EAST) has grown from a grant funded project of 40 members (primarily in New England) to an independent and fully member supported organization, with 170 plus members in 15 states from Maine to Florida. Collectively EAST members have committed to retaining over 11 million monographs and 37,000 journal titles, through June 30, 2031, making EAST the largest regional shared print program in North America. EAST is increasingly seen as central to the collection management strategies of participating libraries as they look to safeguard collections and enhance access in a collaborative manner. This session will explore the innovative steps EAST and its members have taken to protect legacy print materials to ensure they remain accessible for years to come. Attendees will learn about the collection analysis tools and creative methodologies used by EAST when making shared retention decisions at scale. Attendees will hear about the challenges for EAST to “right size” retention member commitments in light of administration pressures to reduce the footprint of print collections and ways EAST is adapting to ensure libraries are not overburdened with legacy collections that are not always used in the same ways as they once were. The session will also explore the expansion of EAST, as its membership becomes more diverse, both in terms of size, resources, geography, and the evolution of the EAST membership model to include working with library consortia and minority serving institutions (MSI’s). This includes the formation of a lending network with libraries spread east of the Mississippi. Attendees will also learn about the expansion of the collection scope of EAST as members agree commitments to newer print monographs and those held in special collections.