Company: TNRSF
Filing Date: 2025-08-01
Form Type: 6-K
Source: 0001171843-25-004943
Chunk: 15

Company: TENARIS SA
Filing Date: 2025-08-01
Form: 6-K
Chunk 15
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 of $242.4 million involving Petróleos
Mexicanos (“Pemex”) and the Company’s Mexican subsidiary Tubos de Acero de Mexico S.A. (“Tamsa”).

For the six-month period ended June 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 |

|                                 |     | Six-month period ended June 30, 
 2025                            |        |     | 2024 |         |   |
|:--------------------------------|:----|:--------------------------------|-------:|:----|:-----|:--------|:--|
|                                 |     | -Unaudited                      |        |     |      |         |   |
| From non-consolidated companies |     |                                 | 46,686 |     |      | (34,340 | ) |
|                                 |     |                                 | 46,686 |     |      | (34,340 | ) |

From non-consolidated companies:For the six-month period ended
June 30, 2025, and 2024, includes a loss of $9.0 million and $82.6 million related to a provision for the ongoing litigation related to
the acquisition of participation in Usiminas related to our investment in Ternium.

| 9 | Income tax |

|              |     | Six-month period ended June 30, |     2025 |   |     |     |     2024 |   |
|:-------------|:----|:--------------------------------|---------:|:--|:----|:----|---------:|:--|
|              |     | -Unaudited                      |          |   |     |     |          |   |
| Current tax  |     |                                 | (221,455 | ) |     |     | (389,392 | ) |
| Deferred tax |     |                                 |   34,771 |   |     |     |  166,389 |   |
|              |     |                                 | (186,684 | ) |     |     | (223,003 | ) |

The Tenaris group of companies falls within the scope of the OECD Pillar
Two model rules. Pillar Two domestic legislation came into effect in Luxembourg, the jurisdiction in which the Company is organized,
as from