Company: TNRSF
Filing Date: 2025-10-30
Form Type: 6-K
Source: 0001171843-25-006840
Chunk: 5

Company: TENARIS SA
Filing Date: 2025-10-30
Form: 6-K
Chunk 5
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 acquisition of a participation in Usiminas. Excluding these two effects, EBITDA in the first nine months of 2025 would have amounted to $2,149 million, or 23.9% of sales while EBITDA in the first nine months of 2024 would have
amounted to $2,500 million, or 25.8% of sales. While shareholders’ net income declined 2% year on year, earnings per share increased 4% following the reduction of outstanding shares due to the share buybacks.

Cash flows provided by operating activities amounted to $1.8 billion during the first nine months of 2025, net of an increase in working capital of $62 million. After capital expenditures of $495 million, our free cash flow amounted to $1.3 billion. Following a dividend payment of $600 million and share buybacks for $825 million in the first nine months of 2025, our net cash position amounted to $3.5 billion at the end of September 2025.

The following table shows our net sales by business segment for the periods indicated below:

| Net sales ($ million) |     | 9M 2025 |     |     |     | 9M 2024 |     |     |     | Increase/(Decrease) |
| Tubes                 |     |   8,560 |     | 95% |     |   9,212 |     | 95% |     | -7%                 |
| Others                |     |     426 |     | 5%  |     |     467 |     | 5%  |     | -9%                 |
| Total                 |     |   8,986 |     |     |     |   9,679 |     |     |     | -7%                 |

Tubes

The following table indicates, for our Tubes business segment, sales volumes of seamless and welded pipes for the periods indicated below:

| Tubes Sales volume (thousand metric tons) |     | 9M 2025 |     | 9M 2024 |     | Increase/(Decrease) |
| Seamless                                  |     |   2,359 |     |   2,328 |     | 1%                  |
| Welded                                    |     |     589 |     |     687 |     | -14%                |
| Total                                     |     |   2,948 |     |