Company: BCDRF
Filing Date: 2025-07-31
Form Type: 6-K
Source: 0000891478-25-000111
Chunk: 131

Company: Banco Santander, S.A.
Filing Date: 2025-07-31
Form: 6-K
Chunk 131
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 rest of the world |     |                   |  90 |     |                    | -176 |     |                                |  -86 |     |            |  5,464 |     |                   |  16 |     |                    |   -265 |     |                                | -249 |     |            |  6,247 |
|                                     |     |                   | 671 |     |                    | -964 |     |                                | -293 |     |            | 73,501 |     |                   | 584 |     |                    | -1,320 |     |                                | -736 |     |            | 87,705 |

| 132 |     | January - June 2025 |

#### 12. Segment information (Primary segment)
Grupo Santander has aligned the information in this note with the underlying information used internally for management reporting and with that presented in Grupo Santander's other public documents.

Grupo Santander's executive committee has been selected to be its chief operating decision maker. Grupo Santander's operating segments reflect its organizational and managerial structures. The executive committee reviews internal reporting based on these segments to assess performance and allocate resources.

The segments are split by business units in which benefits are obtained or by geography. The information is prepared by aggregating the figures for Grupo Santander’s various geographic areas and business units, relating it to both the accounting data of the units integrated in each segment and that provided by management information systems. The same general principles as those used in Grupo Santander are applied.

During the first quarter of 2025, Grupo Santander made changes to the composition of its primary segments, as well as to the criteria for allocating profit among them, as follows:

• To better align reporting with the changes to the management structure in Wealth Management & Insurance, investment platforms (Investment Platforms Unit) and certain stakes in companies, mainly in the real estate sector, that were previously recorded in Retail and Commercial Banking or Corporate and Investment Banking have been incorporated into Wealth Management & Insurance.

• Profit sharing criteria between Retail & Commercial Banking and Cards has been improved, aligning criteria across the Group.

• Additionally, it has been completed the usual annual adjustment of the perimeter of the Global Customer Relationship Model between Retail & Commercial Banking and Corporate & Investment Banking and between Retail & Commercial Banking and Wealth Management & Insurance.

The Group's main level of segmentation, derived from its management model, consolidates the Group's businesses under five business areas:

• Retail & Commercial Banking (Retail): area that integrates the retail