Company: TNRSF
Filing Date: 2025-05-01
Form Type: 6-K
Source: 0001171843-25-002694
Chunk: 35

Company: TENARIS SA
Filing Date: 2025-05-01
Form: 6-K
Chunk 35
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-mentioned Tenaris shares.                                          |

| § | Rocca & Partners Stichting Administratiekantoor Aandelen San Faustin, a private foundation located                        
 in the Netherlands (Stichting) (“RP STAK”) held voting shares in San Faustin sufficient in number to control San Faustin. |

| § | No person or group of persons controls RP STAK. |

Based on the information most recently available to the Company, Tenaris’s
directors and senior management as a group owned 0.07% of the Company’s share capital and 0.08% of the voting rights.

Transactions and balances disclosed as with “associated companies”
are those with companies over which Tenaris exerts significant influence in accordance with IFRS, but does not have control. Transactions
and balances disclosed as with “joint ventures” are those with companies over which Tenaris exerts joint control in accordance
with IFRS, but does not have control. All other transactions and balances with related parties that are not non-consolidated parties are
disclosed as “other related parties”.

| 26 |

The following transactions were carried out with related parties:

|     |                                                           |     | Three-month period ended March 31, |   2025 |     |     |   2024 |   |
|:----|:----------------------------------------------------------|:----|:-----------------------------------|-------:|:----|:----|-------:|:--|
| (i) | Transactions                                              |     | -Unaudited                         |        |     |     |        |   |
|     | (a) Sales of goods, services and other transactions       |     |                                    |        |     |     |        |   |
|     | Sales of goods to associated companies                    |     |                                    |  5,029 |     |     | 10,934 |   |
|     | Sales of goods to other related parties                   |     |                                    | 18,185 |     |     | 28,850 |   |
|     | Sales of services and others to associated companies      |     |                                    |  1,410 |     |     |    167 |   |
|     | Sales of services and others to joint ventures            |     |                                    |     35 |     |     |     35 |   |
|     | Sales of services and others to other related parties     |     |                                    | 44,026 |     |     |