Welcome to our dedicated page for Tenaris SEC filings (Ticker: TNRSF), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The SEC filings page for Tenaris S.A. (TNRSF) provides access to the company’s regulatory disclosures as a foreign private issuer. Tenaris files annual reports under Form 20-F and furnishes current information on Form 6-K pursuant to Rule 13a-16 of the Securities Exchange Act of 1934. In these filings, Tenaris describes itself as a leading global supplier of steel tubes and related services for the world’s energy industry and certain other industrial applications.
Recent Form 6-K reports focus on Tenaris’s Second Tranche of a USD 1.2 billion share buyback program, which covers up to USD 600 million to be executed in the open market. Weekly filings outline the volume of ordinary shares repurchased during specified periods, the total consideration paid and the proportion of the company’s issued share capital held in treasury. Tenaris states that treasury shares acquired under the programs are intended to be cancelled in due course, and that detailed transaction data is available in the share buyback program section of its investor relations materials.
Another key element in Tenaris’s filings is ownership reporting. A Form 6-K dated as of December 17, 2025, describes how repurchased shares reached a threshold of 5% of voting rights and references a Schedule 13D amendment filed by the company’s indirect controlling shareholder, San Faustin S.A., and direct controlling shareholder, Techint Holdings S.à r.l. This amendment discusses share sales under a non-discretionary sales mandate and an accelerated share disposal agreement with a European financial institution.
On this page, users can review Tenaris’s Form 6-K submissions as they appear in the SEC’s EDGAR system. Stock Titan’s AI-powered tools can help summarize lengthy filings, highlight information on share repurchases, treasury shares and controlling shareholder activity, and make the structure and implications of these disclosures easier to understand.
Tenaris S.A. reports that its indirect controlling shareholder San Faustin S.A. and direct controlling shareholder Techint Holdings S.à r.l. have filed an amendment to their Schedule 13D with the SEC. In response to Tenaris’s ongoing share repurchase program, which has passively increased San Faustin’s percentage ownership, San Faustin’s board authorized Techint Holdings on September 17, 2025 to sell some Tenaris ordinary shares, as long as Techint Holdings’ stake does not drop below 67% of Tenaris’s total outstanding ordinary shares.
The controlling shareholders indicated that any sales will depend on market conditions and other factors, and there is no assurance that sales will occur or when. They also stated they do not currently intend to reduce their beneficial ownership below 67%, and have no present plans for extraordinary corporate transactions or major changes in Tenaris’s capital structure, though they may buy or sell additional shares over time depending on conditions.
Tenaris S.A. filed a Form 6-K reporting weekly activity under the first tranche of its share buyback program. The company is executing a tranche of up to USD600 million within a broader USD1.2 billion buyback plan announced on June 6, 2025. From September 15, 2025 to September 19, 2025, Tenaris repurchased 179,100 ordinary shares for total consideration of €2,704,541, equivalent to USD3,203,339. As of September 19, 2025, Tenaris held 29,678,298 ordinary shares in treasury, representing 2.77% of its total issued share capital. The company states it intends to cancel treasury shares acquired under the programs in due course.
Amendment No. 12 to the Schedule 13D for Tenaris S.A. reports that the Reporting Persons collectively hold 713,605,187 Ordinary Shares, representing 68.45% of issued shares following Tenaris S.A.'s open-market repurchases made under its 2025-2026 buyback program. The amendment notes that SAN FAUSTIN's board authorized TECHINT HOLDINGS to sell some of its shares for portfolio-management purposes, provided TECHINT HOLDINGS' ownership does not fall below 67% of outstanding Ordinary Shares. The filing confirms no transactions by the Reporting Persons in the last 60 days and otherwise incorporates prior Schedule 13D disclosures by reference.
Tenaris S.A. provided a weekly update on its first tranche of a USD1.2 billion share buyback program, of which up to USD600 million is to be executed in the open market. From September 8 to September 12, 2025, the company repurchased 205,005 ordinary shares for a total of €3,103,863, equivalent to USD3,641,392.
As of September 12, 2025, Tenaris held 29,499,198 ordinary shares in treasury, representing 2.75% of its total issued share capital. The company states that it intends to cancel treasury shares purchased under its buyback programs in due course.