Banco Santander, S.A. filed a Form 6-K with the U.S. Securities and Exchange Commission for the month of October 2026, reporting its January-September 2026 financial results and disclosing the completion of the Webster Financial Corporation and TSB Banking Group acquisitions, among other significant events.

Key Highlights

  • Profit attributable to parent: EUR 12,405 million for the nine months ended September 2026, up 20.0% from EUR 10,337 million in the same period of 2025, according to the filing.
  • Webster acquisition completed: On 20 August 2026 for total consideration of USD 12,509 million (EUR 10,724 million), comprising 65% cash and 35% newly issued Banco Santander shares, with a -1.47 percentage point impact on the September 2026 CET1 ratio.
  • TSB acquisition completed: On 30 April 2026 for a cash consideration of GBP 2,867 million (EUR 3,318 million), with a -55 basis point impact on the June 2026 CET1 ratio.
  • Poland disposal: The sale of Santander Bank Polska to Erste Group Bank AG for EUR 7,035 million generated a net capital gain of EUR 1,895 million, increasing the CET1 ratio by 95 basis points.
  • Net interest income: EUR 34,545 million for the first nine months of 2026, up 9.5% from EUR 31,559 million in 9M 2025.
  • Total assets: EUR 2,102,334 million as of 30 September 2026, up 14.2% from EUR 1,840,668 million as of 30 September 2025.
  • Santander Brasil exchange offer: Announced on 30 July 2026, targeting approximately 10% of Santander Brasil's share capital, with a maximum transaction value of approximately EUR 1,908 million based on Banco Santander's ordinary share price of EUR 12.248 as at 30 July 2026.

Banco Santander Reports 9M 2026 Results Amid Major Acquisition Activity

According to the filing, Banco Santander reported profit attributable to the parent of EUR 12,405 million for the nine months ended 30 September 2026, a 20.0% increase compared with EUR 10,337 million in the same period of 2025. Total income for 9M 2026 reached EUR 46,713 million, up 8.0% from EUR 43,248 million in 9M 2025. Earnings per share for the nine-month period were EUR 0.83, compared with EUR 0.66 in 9M 2025, representing a 24.9% increase, as disclosed in the filing.

The filing describes two major acquisitions completed during the period. The Webster Financial Corporation acquisition closed on 20 August 2026. The total consideration amounted to USD 12,509 million (EUR 10,724 million), with the share component executed via a capital increase through the issuance of 329,846,438 new ordinary shares with a total nominal value of EUR 165 million. As of 30 September 2026, the filing states Webster had a gross loan book of approximately EUR 50 billion, around EUR 62 billion of customer deposits, approximately 4,500 employees, around 190 branches, and 4.2 million customers in the US. The TSB acquisition closed on 30 April 2026, and as of 30 June 2026, TSB had approximately EUR 53 billion of total assets, a gross loan book of EUR 42 billion, around EUR 42 billion of customer funds, approximately 4,700 employees, around 180 branches, and over 4 million customers in the UK.

On the divestment side, the filing reports that the sale of Santander Bank Polska to Erste Group Bank AG was completed on 9 January 2026 for a total cash consideration of EUR 7,035 million. The transaction was executed at 584 zlotys per share and generated a net capital gain of EUR 1,895 million. The filing also discloses a voluntary exchange offer announced on 30 July 2026 to acquire the remaining approximately 10% of Banco Santander Brasil not already owned by the group, with exchange ratios and conditions remaining subject to regulatory approvals and shareholder approval of a corresponding capital increase.

What Was Disclosed

Banco Santander's Form 6-K for October 2026 covers its January-September 2026 financial results, reporting EUR 12,405 million in profit attributable to the parent, and details the completion of the Webster and TSB acquisitions, the Poland disposal, and the announced Santander Brasil exchange offer.