Esquire Bank buys Chicago's Signature to build a $4.8 billion lender

Overview

Esquire Bank built a national business banking plaintiff law firms from a single New York office. On August 1, 2026, it bought a Chicago commercial bank and became a $4.8 billion lender.

The all-stock deal, worth about $348 million, hands Esquire something its niche model lacked: a broad base of Midwest business deposits. That kind of diversification is what regulators pushed banks toward after three lenders failed in 2023.

Why it matters

A profitable niche bank is buying Midwest deposits to cut its reliance on one narrow funding source, the fix banks reached for after 2023's failures.

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Key Indicators

$4.8B

Combined total assets

The merged bank's assets as of June 30, 2026.

$348.4M

Deal value

The all-stock price when the deal was announced in March 2026.

$4.0B

Combined deposits

Total deposits of the merged company.

2.671

Share exchange ratio

Esquire shares each Signature share converted into at close.

17.1%

Esquire return on equity

Esquire's standalone return on equity in the second quarter of 2026.

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People Involved

Andrew Sagliocca

Leads the combined company

Leonard Caronia

Joins Esquire's board of directors

Michael O'Rourke

Runs the acquired Chicago business

Organizations Involved

Esquire Financial Holdings

Bank holding company

Acquirer; parent of the combined bank

A Jericho, New York bank holding company whose Esquire Bank lends nationally to plaintiff law firms.

Signature Bancorporation

Bank holding company

Acquired; now a division of Esquire Bank

The Rosemont, Illinois holding company for Signature Bank Chicago, a commercial lender to closely held companies.

Timeline

March 2026 August 2026

3 events Latest: August 3rd, 2026 · 1 week ago

August 2026
Esquire lays out the division structure
Latest Statement

Signature begins operating as a division of Esquire Bank under its own brand. Mick O'Rourke becomes division president, and O'Rourke and former Signature chairman Leonard Caronia join Esquire's board.
August 3rd, 2026
Merger closes, creating a $4.8 billion bank
Deal

Esquire completes the acquisition after clearance from the Federal Reserve and the Office of the Comptroller of the Currency. Signature shares convert at a final ratio of 2.671 Esquire shares each, adjusted after Signature sold about $70 million in loans.
August 1st, 2026
March 2026
Esquire agrees to buy Signature for about $348 million
Deal

Esquire Financial announces an all-stock deal for Chicago's Signature Bancorporation, valued near $348.4 million, roughly $260 per Signature share. The initial exchange ratio is 2.63 Esquire shares per Signature share.
March 12th, 2026

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

March 2023

Silicon Valley Bank collapse (March 2023)

Silicon Valley Bank held deposits concentrated among tech startups and venture funds. When those clients pulled cash at once, the bank sold bonds at a loss and failed within days. It was the second-largest bank failure in US history at the time.

Then

Regulators seized the bank and guaranteed all deposits to stop a wider run.

Now

It made deposit concentration the central worry for mid-sized banks and their regulators.

Why this matters now

Esquire's litigation niche gives it a concentrated deposit base. Buying Signature's Midwest commercial deposits is a direct hedge against that risk.

March 2023

Signature Bank New York failure (March 2023)

Signature Bank of New York, a lender heavy in commercial real estate and crypto-linked deposits, failed two days after Silicon Valley Bank. Regulators closed it and later sold most of its business to New York Community Bancorp. It shared a name, but nothing else, with Chicago's Signature Bank.

Then

The Federal Deposit Insurance Corporation ran an auction and moved deposits to a stronger buyer.

Now

The name became shorthand for the 2023 regional-bank stress, a label the Chicago bank has had to work around.

Why this matters now

Readers may confuse the two. Esquire bought the healthy Chicago Signature, not the failed New York one, and inherits the branding challenge.

March 2023

First Citizens acquires Silicon Valley Bridge Bank (March 2023)

First Citizens BancShares, a family-run North Carolina bank, bought the deposits and loans of failed Silicon Valley Bank from regulators. The deal roughly doubled its size and pushed it into new markets overnight.

Then

First Citizens absorbed the branches and clients and kept the SVB name for that unit.

Now

It showed how a disciplined acquirer can use one deal to jump in scale and reach.

Why this matters now

Esquire is running the same playbook at a smaller scale: use stock to buy scale, keep the acquired brand, and enter a market it could not build fast on its own.