Esquire Financial Holdings announced a definitive agreement to acquire Signature Bancorporation in an all-stock transaction valued at approximately $348.4 million, marking a significant expansion into the Chicago commercial banking market. The merger will combine Esquire’s national litigation-focused banking platform with Signature’s established Midwest commercial banking franchise, creating a combined institution with roughly $4.8 billion in assets at closing.
Headquartered in Jericho, New York, Esquire Financial Holdings operates Esquire Bank and focuses heavily on serving the litigation industry, small businesses, and commercial clients nationwide. Signature Bancorporation, based in Rosemont, Illinois, is the parent company of Signature Bank, a relationship-driven commercial bank serving middle-market businesses across sectors such as legal, healthcare, manufacturing, technology, and professional services.
The acquisition gives Esquire a strong entry point into Chicago, the third-largest metropolitan area in the United States and one of the nation’s largest legal markets. Signature’s commercial banking operations and core deposit base will complement Esquire’s specialized lending capabilities, particularly its litigation-focused financial services platform.
Under the terms of the agreement, Signature shareholders will receive 2.63 shares of Esquire common stock for each Signature share. Based on Esquire’s closing stock price on March 11, 2026, the exchange ratio implies a per share value of $260.48 for Signature shareholders. The exchange ratio may adjust depending on the disposition value of certain loans with a total par value of about $70 million, with the final ratio capped between 2.50 and 2.80 shares.
Strategically, the combination aims to enhance scale, diversify revenue streams, and accelerate growth. Signature’s commercial and commercial real estate relationship banking business in Chicago will broaden Esquire’s platform, while Esquire’s national litigation banking capabilities will be extended to Signature’s client base. The transaction is expected to reduce Esquire’s concentration in litigation vertical loans and funding from more than 70% to below 50%.
Financially, the merger is projected to deliver strong returns. Pro forma estimates indicate the transaction could be approximately 23% accretive to Esquire’s GAAP earnings per share in 2027 and about 11% accretive to tangible book value. The deal assumes modest cost savings of around 5%, with most of the expected value driven by growth opportunities and operational performance rather than cost reductions.
Leadership from both institutions will play roles in the combined organization. The board of directors will consist of eleven members, including nine from Esquire and two from Signature. Signature Chairman Leonard S. Caronia and Chief Executive Officer Michael G. O’Rourke will join Esquire’s board. Signature’s top executives have also entered new employment agreements and will oversee commercial business development and operations in the Chicago market after the merger.
The transaction has been approved by the boards of both companies and remains subject to regulatory approvals and shareholder consent. The companies expect the deal to close in the third quarter of 2026.
KEY QUOTES:
“Signature’s leadership in the attractive Chicago market, best-in-class management team, and exceptional core funding provide Esquire with a strong platform for continued growth and expansion in the country’s third largest metropolitan area or MSA and one of the nation’s largest legal markets. This merger is compelling on multiple levels. Financially, it enhances our operating profile, expands our resources, and diversifies our balance sheet while maintaining a robust capital position for continued expansion in our unique national litigation platform. Strategically, the combination brings together two institutions with highly complementary commercial banking operations and capabilities. Most importantly, it unites two highly talented management teams with deep client relationships and strong market expertise. We are thrilled to welcome Signature’s team, clients, and shareholders to Esquire.”
Andrew C. Sagliocca, Vice Chairman, Chief Executive Officer And President, Esquire Financial Holdings
“We are excited to announce a partnership that will benefit both institutions, our clients, and our shareholders, while also positioning us to work together towards the next chapter of our combined organization’s legacy. By bringing together Signature’s strong Midwest commercial banking franchise with Esquire’s national capabilities, we will have greater resources and expanded reach to support our clients as they grow. As we celebrate Signature’s 20th anniversary, this merger will provide our shareholders with enhanced liquidity and an opportunity to create greater value in the years ahead.”
Michael G. O’Rourke, Co-Founder, Director, Chief Executive Officer And President, Signature Bancorporation
