Company: TNRSF
Filing Date: 2025-10-30
Form Type: 6-K
Source: 0001171843-25-006841
Chunk: 11

Company: TENARIS SA
Filing Date: 2025-10-30
Form: 6-K
Chunk 11
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 | ) |     |     | (57,828 | ) |
| Net financial results                                    |     |                         | 103,589 |   |     |     |  80,876 |   |

Finance income: For the nine-month period ended September 30, 2025, includes $26.1 million of interest related to instruments carried at FVTPL and includes $66.9 million of interest related to instruments carried at FVTOCI.

For the nine-month period ended September 30, 2024, includes $32.5 million of interest related to instruments carried at FVTPL and includes $64.4 million of interest related to instruments carried at FVTOCI.

Net foreign exchange transaction results:For the nine-month period ended September 30, 2025, mainly related to the Euro appreciation against the U.S. dollar on Euro denominated intercompany liabilities partially offset by currency translation adjustment reserve.

For the nine-month period ended September 30, 2024, mainly related to the Argentine Peso depreciation against the U.S. dollar on Argentine Peso denominated liabilities.

Other:For the nine-month period ended September 30, 2025, includes a loss of approximately $15.8 million related to fees paid in connection with a collection of $242.4 million involving Petróleos Mexicanos (“Pemex”) and the Company’s Mexican subsidiary Tubos de Acero de Mexico S.A. (“Tamsa”).

For the nine-month period ended September 30, 2024, mainly relates to the cumulative result of the U.S. dollar denominated Argentine bonds previously recognized in Other Comprehensive Income. For more information see note 20.

| 8 | Equity in earnings of non-consolidated companies |

|                                 |     | Nine-month period ended 
 September 30,           
 2025                    |        |     | 2024 |         |   |
|:--------------------------------|:----|:------------------------|-------:|:----|:-----|:--------|:--|
|                                 |     | -Unaudited              |        |     |      |         |   |
| From non-consolidated companies |     |                         | 37,731 |     |      | (26,735 | ) |
|                                 |     |                         | 37,731 |     |      | (26,735 | ) |

From non-consolidated companies:For the nine-month period ended September 30, 2025,