SCHEDULE: Tenaris Major Shareholder Trims Stake to 68.6%

A group of major shareholders, including Techint Holdings, reduced their beneficial ownership in Tenaris S.A. by 1.11% to 68.6% through open market sales.

Summary

• Reporting Persons (ROCCA & PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN, SAN FAUSTIN S.A., and TECHINT HOLDINGS S.A R.L.) decreased their beneficial ownership in Tenaris S.A. by a net 1.11%.
• Their aggregate ownership now stands at 68.6% of the Ordinary Shares, down from 69.66%.
• TECHINT HOLDINGS sold a total of 18,919,701 Ordinary Shares in the open market between December 15, 2025, and February 6, 2026.
• These sales were executed under a non-discretionary accelerated share disposal agreement with a European financial institution.
• The reduction in ownership was partially offset by Tenaris S.A.'s own share buyback program, which repurchased 11,065,751 Ordinary Shares between December 15, 2025, and January 2, 2026.
• The percentage of class is calculated based on 1,071,994,930 issued Ordinary Shares, with 62,328,172 held as treasury stock as of January 2, 2026.

Sentiment

Score: 4

Explanation: StockSavvy.ai views this as a moderately negative development due to the significant insider selling by a controlling shareholder, despite the offsetting company share buyback. It suggests a potential shift in the long-term commitment or capital allocation strategy of the major holder.

Positives

• Tenaris S.A. continued its share buyback program, repurchasing 11,065,751 Ordinary Shares, which can be seen as a positive for remaining shareholders by reducing the share count.

Negatives

• TECHINT HOLDINGS, a significant reporting person, sold 18,919,701 Ordinary Shares, indicating a reduction in their stake.
• The net decrease in beneficial ownership by the Reporting Persons group was 1.11%.

Future Outlook

The filing references Tenaris S.A.'s publicly announced second tranche of its share buyback program, which concluded its repurchase period on January 2, 2026.

Industry Context

StockSavvy.ai notes that significant insider selling, even by a controlling shareholder, can sometimes be viewed with caution by the market, though in this case, it was partially offset by the company's own buyback program. The transaction reflects a strategic adjustment in the ownership structure of a major player in the steel pipe manufacturing industry, often tied to the energy sector's capital expenditure cycles.

Stakeholder Impact

• Shareholders: The reduction in the controlling shareholder's stake could lead to concerns about long-term commitment, but the company's buyback program might provide some support to the share price.
• Company: The company's share buyback program reduces the number of outstanding shares, potentially increasing earnings per share for remaining shareholders.

Key Dates

Recommendation

While the significant selling by a major shareholder could be a negative signal, the company's ongoing share buyback program provides some support. The net change in ownership is not drastic enough to warrant an immediate 'sell' given the company's existing operations and market position, but the insider selling suggests caution, leading to a 'hold' recommendation for now to observe further developments.

Keywords

Tenaris S.A., TEN, Schedule 13D/A, beneficial ownership, share sale, share buyback, Techint Holdings, Rocca & Partners, San Faustin, SEC filing, Luxembourg, Netherlands