US Bank Mergers: Every Deal in the Past Year (2026)

118 FDIC-insured banks were merged into another bank in the twelve months to October 23, 2026. Together they held $436 billion. The largest was Webster Bank, with $85.9 billion in assets, acquired by Santander Bank on August 20, 2026; the median acquired bank held $376 million.

Most of those deals end with two banks on one set of systems. For the acquirer it is a core conversion, a customer migration and a data integration.

The 25 largest bank mergers of the last twelve months

Ranked by the acquired bank's total assets in its last Call Report before the merger took effect.

Effective	Acquired bank	Size before merger	Acquirer	Source
August 20, 2026	Webster Bank, Stamford, CT	$85.9 billion	Santander Bank, DE	FDIC
February 1, 2026	Comerica Bank, Dallas, TX	$80.1 billion	Fifth Third Bank, OH	FDIC
January 2, 2026	Synovus Bank, Columbus, GA	$61.2 billion	Pinnacle Bank, TN	FDIC
February 1, 2026	Cadence Bank, Tupelo, MS	$53.5 billion	The Huntington National Bank, OH	FDIC
June 18, 2026	FirstBank, Lakewood, CO	$29.4 billion	PNC Bank, DE	FDIC
April 1, 2026	First Foundation Bank, Irvine, CA	$11.3 billion	Sunflower Bank, TX	FDIC
July 1, 2026	Stellar Bank, Houston, TX	$10.4 billion	Prosperity Bank, TX	FDIC
June 2, 2026	Flushing Bank, Uniondale, NY	$8.9 billion	OceanFirst Bank, NJ	FDIC
February 13, 2026	MidWestOne Bank, Iowa City, IA	$6.3 billion	Nicolet National Bank, WI	FDIC
April 17, 2026	Heritage Bank of Commerce, San Jose, CA	$5.7 billion	Citizens Business Bank, CA	FDIC
November 1, 2025	HarborOne Bank, Brockton, MA	$5.6 billion	Eastern Bank, MA	FDIC
July 20, 2026	Northfield Bank, Staten Island, NY	$5.5 billion	Columbia Bank, NJ	FDIC
January 1, 2026	FineMark National Bank & Trust, Fort Myers, FL	$3.9 billion	Commerce Bank, MO	FDIC
May 1, 2026	LINKBANK, Camp Hill, PA	$3.1 billion	Burke & Herbert Bank & Trust Company, VA	FDIC
February 1, 2026	First Citizens National Bank, Dyersburg, TN	$2.7 billion	The Park National Bank, OH	FDIC
January 7, 2026	Vista Bank, Dallas, TX	$2.5 billion	NBH Bank, CO	FDIC
January 1, 2026	American Bank, Corpus Christi, TX	$2.5 billion	Prosperity Bank, TX	FDIC
February 1, 2026	First Savings Bank, Jeffersonville, IN	$2.4 billion	First Merchants Bank, IN	FDIC
January 12, 2026	Dogwood State Bank, Raleigh, NC	$2.4 billion	TowneBank, VA	FDIC
August 1, 2026	Signature Bank, Rosemont, IL	$2.1 billion	Esquire Bank, NY	FDIC
August 1, 2026	One Florida Bank, Orlando, FL	$2.1 billion	Hancock Whitney Bank, MS	FDIC
November 1, 2025	Westfield Bank, FSB, Westfield Center, OH	$2.1 billion	First Financial Bank, OH	FDIC
March 2, 2026	The Middlefield Banking Company, Middlefield, OH	$1.9 billion	The Farmers National Bank of Canfield, OH	FDIC
July 13, 2026	Blue Foundry Bank, Rutherford, NJ	$1.9 billion	Fulton Bank, PA	FDIC
March 1, 2026	CNB Bank and Trust, Carlinville, IL	$1.8 billion	Heartland Bank and Trust Company, IL	FDIC

Download every deal of the last twelve months (CSV), free. The full dataset, every unassisted bank merger since 2016, is one email away.

The longer view

• According to FDIC data, 6,255 institutions filed a Call Report at the end of 2015, and 4,313 for June 30, 2026, a fall of 31%.
• 1,760 unassisted mergers between the start of 2016 and June 30, 2026 account for most of that change.
• The busiest full year in that period was 2018, with 264 mergers; the quietest was 2024, with 58.
• In the last twelve months, 45 deals, 38%, crossed a state line, and 7 of the 110 acquirers bought more than one bank.

A further 25 mergers in the last twelve months were between banks in the same group. Those are corporate reorganizations rather than deals, and they are not counted here.

What a merger means for technology

The acquirer usually moves the acquired bank onto its own core, digital banking and payments systems, and the conversion is the part of the deal customers notice. These guides cover the systems involved:

• Cloud-based core banking systems: for acquirers deciding whether to convert onto their current core or move both banks to a new one.
• Data warehouse solutions for financial services: bringing two banks' data into one place.
• Financial close and consolidation software for banks: one set of books after the deal.
• KYC automation platforms: bringing acquired customers up to the acquirer's standard.

Planning the integration? The Retail Banking Business Architecture Toolkit gives a capability model, value streams and an information model to map both banks against, and the Bank Value Streams show which customer journeys a conversion touches.

More from Finantrix Atlas

• Largest banks in the US, ranked by total assets
• Largest community banks in the US
• Largest custodian banks, ranked by assets under custody

How this list was built

A merger here is an FDIC structure change with code 223, merger without assistance, effective between the start of 2016 and October 23, 2026. Each acquired bank's size is its total assets in the last Call Report it filed before the effective date. Every acquired bank of the last twelve months is confirmed to be inactive in the FDIC's records, and 118 of the 118 could be sized from a report filed before the merger.

The counts of banks are the number of institutions that filed a Call Report for each period, from the same source, so both ends of the comparison count the same thing.

Limits

• Completed mergers only. A deal counts on the date it took effect, not when it was announced, so pending deals are not here.
• Size is the acquired bank's. The table shows what was acquired, not the combined bank, and a deal announced as one transaction can close as more than one merger if the seller owned several charters.
• Unassisted mergers only. Failed banks sold by the FDIC, absorptions, and mergers between affiliates (FDIC code 224) are excluded.
• One publisher. Every record is from the FDIC; no second source publishes the same list in a form that can be checked row by row.

Cite this

Free to quote, cite and republish, including the chart, with credit to Finantrix Atlas and a link to this page.

118 FDIC-insured banks were merged into another bank in the twelve months to October 23, 2026, taking $436 billion in assets with them, according to a Finantrix Atlas analysis of FDIC records.

The number of US banks and trust companies filing a Call Report fell from 6,255 at the end of 2015 to 4,313 for June 30, 2026, according to Finantrix Atlas.

Suggested citation: Finantrix Atlas, "US Bank Mergers," data through October 23, 2026, from FDIC structure-change records. https://www.finantrix.com/articles/us-bank-mergers

Embed the chart:

<a href="https://www.finantrix.com/articles/us-bank-mergers"><img src="https://www.finantrix.com/atlas/us-bank-mergers.png" alt="US bank mergers per year, from Finantrix Atlas"></a>
<p>Chart: <a href="https://www.finantrix.com/articles/us-bank-mergers">Finantrix Atlas</a>, from FDIC records.</p>

Frequently asked questions

Q: How many banks merged in the last year? A: 118 FDIC-insured banks were merged into another bank in the twelve months to October 23, 2026, not counting mergers between affiliates.

Q: What was the largest bank merger of the last twelve months? A: Measured by the acquired bank's assets, Webster Bank, with $85.9 billion, acquired by Santander Bank.

Q: How has the number of US banks changed? A: 4,313 institutions have a Call Report record in the FDIC's financial data for June 30, 2026, against 6,255 at the end of 2015. That count includes every filer in the FDIC's data for the date, so it is slightly higher than the number of banks ranked in Largest banks in the US.