Company: TNRSF
Filing Date: 2025-10-30
Form Type: 6-K
Source: 0001171843-25-006841
Chunk: 36

Company: TENARIS SA
Filing Date: 2025-10-30
Form: 6-K
Chunk 36
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 United States |

On February 1, 2025, the U.S. government announced the imposition of flat tariffs applicable to all products imported from Mexico and Canada, but subsequently suspended the effectiveness of such tariffs, citing ongoing trade negotiations.

On February 10, 2025, the U.S. government announced changes to the tariffs applicable to imported steel products, including those produced and sold by the Company. These charges include the extension of a 25% tariff to all imported steel products, which became effective on March 12, 2025, pursuant to a phased-in implementation plan, initially applying to raw steel products, with downstream (“derivative”) products being subject to the tariff starting June 1, 2025. Exclusions that previously exempted specific products and countries from the existing tariffs have been discontinued.

On June 4, 2025, the U.S. government increased these tariffs to 50% (with the exception of steel imports from the United Kingdom, whose tariffs remain at 25%), and on June 16, 2025, the list of steel derivative products to which the tariffs apply was expanded.

U.S. tariffs on steel imports and other tariffs, including those arising under a reciprocal tariff regime announced by the U.S. government on April 2, 2025 (which came into full effect on August 1, 2025, following a period allowing for country-by-country negotiations), or under the retaliatory measures enacted by other countries, are affecting market prices and dynamics, supply chains, and cost structures. Changes in some of these tariff rates continue to be made, or threatened, in response to further negotiations with trading partners and/or measures taken, retaliatory or otherwise, by those partners that are deemed hostile acts or against the interests of the United States by the U.S. government.

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| 25 | Events after the reporting period |

Interim dividend payment

On October 29, 2025, the Company’s Board of Directors approved the payment of an interim dividend of $0.29 per outstanding share ($0.58 per ADS), or approximately $300 million, payable on November 26, 2025, with record date on November 25, 2025.

<div align='center'>Carlos Gómez Álzaga

Chief Financial Officer

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