Union Bay Risk Advisors: Strategic Growth Investment Raised From Thayer Street Partners

By Amit Chowdhry • Nov 22, 2025

Union Bay Risk Advisors announced that it has received a significant growth investment from Thayer Street Partners, marking a major milestone in the company’s effort to expand its nationwide presence as a fast-growing independent property and casualty insurance brokerage platform. The financing will support Union Bay’s strategy to scale its acquisition activity, strengthen its operational infrastructure, and advance its position as a Top 100 national insurance brokerage.

The company has used a portion of the investment to fully repay its credit facility, further enhancing its balance sheet and financial flexibility. In addition to the funding, Union Bay recently completed its seventeenth acquisition, broadening its reach across seven states. This expansion provides increased access to a network of more than 150 insurance carriers. And it enables the company to deliver tailored property and casualty solutions to families and businesses across the United States.

Union Bay emphasized that the new capital positions the company to pursue additional acquisitions that will extend its market presence and enhance the services it offers to clients. With a reinforced capital base and a strong track record of integration, the company plans to continue expanding both organically and through targeted acquisitions across key regions.

Union Bay Risk Advisors, based in Lancaster, Pennsylvania, serves retail and commercial clients throughout the Northeast and Midwest. The brokerage provides comprehensive insurance offerings through a personalized, consultative approach, allowing clients to manage their personal and business insurance needs under one platform. Founded by Doug Polley and Patrick Sullivan, Union Bay has experienced rapid growth through a combination of organic scaling and strategic acquisitions.

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“Union Bay was founded to provide straightforward, client-focused insurance advice and solutions. With Thayer Street’s investment, we’ve strengthened our balance sheet and positioned ourselves to pursue additional acquisitions that expand our reach and enhance the services we deliver to our clients.”

Patrick Sullivan, Co-Founder and President of Union Bay Risk Advisors

“We are excited to build on our relationship with Patrick, Doug and the Union Bay team. Having closely tracked the company’s progress, we were able to design a capital solution that aligns directly with its acquisition-led growth strategy. We look forward to supporting the team as they execute their next phase of growth.”

Josh Koplewicz, Managing Partner and Founder of Thayer Street Partners