In short – key takeaways
- Banco Santander completed its acquisition of Webster Financial on 20 August 2026, roughly six and a half months after announcing it.
- The transaction was valued at about $12.3 billion when unveiled in February — the largest US bank deal announced this year and one of the biggest US takeovers ever attempted by a European lender.
- The combined US business has a pro forma balance sheet of roughly $327 billion in assets, $185 billion in loans and $172 billion in deposits, serving close to eight million customers.
- Santander funded the equity portion with a €3.56 billion capital increase and is targeting a return on tangible equity of around 18% in the US by 2028.
Banco Santander closed its purchase of Stamford-based Webster Financial Corporation on Thursday, 20 August, wrapping up a deal first announced on 3 February and clearing the last of a long queue of regulators on both sides of the Atlantic. The transaction hands the Spanish group its most substantial American retail and commercial banking franchise to date, and it settles a question that has hung over Santander’s US strategy for the better part of a decade: whether the group would build scale in deposits or eventually retreat.
What actually closed
Webster’s businesses have largely been folded into Santander Bank, N.A., the group’s US banking subsidiary. Webster shareholders received $48.75 in cash plus 2.0548 Santander American depositary shares for each share held — consideration worth about $75.63 per share against Santander’s price on 2 February, the day before the announcement.
To cover the stock component, Santander executed a related capital increase, issuing 329,846,438 new shares at an effective price of €10.7896 apiece and raising €3.56 billion, or about $4.16 billion. The raise splits into €164.9 million of nominal value and roughly €3.39 billion of share premium, and leaves the bank’s share capital at €7.51 billion across just over 15 billion shares. Webster’s former holders end up with close to 2.2% of the enlarged Santander.
Two figures in circulation are worth pinning down, because both have been reported inconsistently. The capital increase is €3.56 billion, per Santander’s own regulatory filing and the wire coverage of it — some secondary aggregators have carried €2.56 billion. And the headline price is $12.3 billion on Santander’s February announcement and in the Federal Reserve’s approval order, based on the share price the day before the deal was unveiled; the $12.2 billion figure used by several outlets reflects the value at a later date. Neither pairing is a contradiction, but they are not interchangeable.
A regulatory path that ran through two continents
The approval sequence was unusually visible for a bank merger, in part because it crossed jurisdictions:
| Milestone | Date |
|---|---|
| Deal announced | 3 February 2026 |
| Santander shareholders approve capital increase | 27 March 2026 |
| Webster stockholders approve transaction | 26 May 2026 |
| OCC approves bank merger | 12 June 2026 |
| ECB authorises transaction | 21 July 2026 |
| Federal Reserve approves | 4 August 2026 |
| Closing | 20 August 2026 |
Webster’s own shareholders were never in doubt: at the 26 May special meeting, with 72.3% of eligible shares represented, roughly 115.8 million votes backed the transaction against about 1.3 million opposed. Support for the related executive compensation proposal was markedly thinner — a familiar pattern, and not one that threatened the deal.
The Federal Reserve acted 129 days after receiving the application — brisk by the standards of large bank deals reviewed in recent years, and a data point that dealmakers on both continents will have noticed.
A Connecticut-sized shift
The clearest change is in Webster’s home state. Before the deal, Webster was the largest bank headquartered in Connecticut, with 95 branches there and roughly $40.4 billion in in-state deposits as of mid-2025, against Santander’s 13 branches and about $1.9 billion. The Fed’s order put the combined Connecticut deposit base at roughly $42.3 billion — enough to move Santander Bank to the top of the state table. The order also placed the combined bank fourth in both Massachusetts and Rhode Island, and eleventh in New York.
Two ways to size the same bank
There is a mild tension in how the combined entity is being described, and it is worth understanding before comparing coverage. Santander frames the result as a leading US retail and commercial bank and, at announcement, as a top-ten franchise by assets and a top-five deposit franchise across key Northeastern states. The Federal Reserve’s order, which measures Santander Holdings USA on its own balance sheet at roughly $253.6 billion, ranks the holding company as the 19th largest insured depository organisation in the country. Webster alone came in at about $86 billion in assets.
Both descriptions can be true at once, because they count different things — the group’s full US footprint including non-bank businesses, versus the insured depository organisation as the Fed measures it. Readers moving between outlets will see the two numbers used more or less interchangeably.
Who runs what
Leadership has been split between the two sides. Christiana Riley remains country head and CEO of Santander US. John Ciulla, previously Webster’s chief executive, now runs Santander Bank, N.A. Luis Massiani, formerly Webster’s president and COO, is chief operating officer of both Santander US and Santander Bank. Tim Ryan continues as chair of the Santander Holdings US board.
Webster’s Stamford headquarters becomes a corporate hub alongside Boston, New York, Miami and Dallas — a signal that the acquirer intends to keep the acquired bank’s commercial relationships rather than absorb them quietly.
Politics never quite left the room
The transaction attracted objections that had little to do with banking competition. Senators Bernie Moreno and Tim Sheehy pushed against the deal on the grounds that Spain has not consistently been a reliable US ally — an argument that placed foreign policy inside a bank merger review. The Fed logged four adverse comments on the application, including concerns about Santander’s record of branch closures in other markets, while the Justice Department concluded the combination would not significantly harm competition.
None of it changed the outcome. But it established that a European acquirer of a mid-sized US bank should now expect political scrutiny alongside prudential review — and should budget time and public affairs capacity accordingly.
What Santander needs from it
The financial case rests on funding costs. Webster brings a relationship-driven deposit base, middle-market commercial lending and a Healthcare Financial Services platform that Santander lacked. Management expects the deal to lift earnings per share by roughly 7% to 8% and to help push US return on tangible equity to about 18% by 2028 — a steep climb from around 10% last year. Return on invested capital is guided toward roughly 15% over the same horizon.
Those targets are the real test. Santander has been building in the United States by acquisition for two decades — it took a stake in Sovereign Bancorp in 2006, acquired the bank outright in 2009 and rebranded it as Santander Bank in 2013 — without ever reaching the profitability of its European and Latin American franchises. Webster is the largest bet yet that scale in low-cost deposits is what was missing.
What changes for customers — and when
For now, very little. Webster Bank continues under its own name as a division of Santander Bank, accounts and logins are unchanged, and fee-free access has been opened across both ATM networks. The integration work — core systems, brand consolidation, branch overlap — arrives later, and that is where the synergy targets will actually be won or lost.
For the wider market, the more consequential signal is that a large cross-border bank acquisition cleared US and EU regulators in a little over six months. Coming after Santander’s purchase of TSB in the UK, it suggests European lenders may be readier to buy in America than they have been since the financial crisis — and that Washington’s regulators, for now, are willing to let them.
Frequently asked questions
When did Santander complete the Webster acquisition?
The deal closed on 20 August 2026, about six and a half months after it was announced on 3 February 2026.
How much did Santander pay for Webster Financial?
Approximately $12.3 billion, based on Santander’s share price on 2 February 2026. Webster shareholders received $48.75 in cash plus 2.0548 Santander ADSs per share, worth about $75.63 per share at announcement.
Is Webster Bank now Santander Bank?
Legally, Webster Bank, N.A. has merged into Santander Bank, N.A. Commercially, Webster Bank continues to operate under its own name as a division of Santander Bank. Accounts, cards and online logins are unchanged for now, and customers have fee-free access to both ATM networks.
How large is the combined bank?
The combined US business has roughly $327 billion in pro forma assets, $185 billion in loans and $172 billion in deposits, serving close to eight million customers. Measured as an insured depository organisation, the Federal Reserve ranked Santander Holdings USA 19th in the country with about $253.6 billion in consolidated assets.
Why did US senators object to the deal?
Senators Bernie Moreno and Tim Sheehy opposed the transaction on national-security and alliance grounds rather than competition grounds, questioning Spain’s reliability as a US ally. Regulators approved the deal regardless.
Sources
- Banco Santander — completion of the Webster acquisition (20 August 2026)
- Federal Reserve Board — approval order (4 August 2026)
- Santander Bank — customer-facing announcement
- Webster Financial Corporation — Form 10-Q, Q2 2026 (SEC)
- American Banker — Fed grants final approval
- banksandbankers.com/category/fintech-and-innovation/
This article is for informational purposes only and does not constitute financial advice.
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