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Tenaris S.A., together with its subsidiaries, produces and sells seamless and welded steel tubular products; and provides related services for the oil and gas industry, and other industrial applications. The company offers steel casings, tubing products, mechanical and structural pipes, cold-drawn pipes, and premium joints and couplings; coiled tubing products for oil and gas drilling and workovers, and subsea pipelines; and umbilical tubing products; and tubular accessories. It also provides sucker rods, industrial equipment, heat exchangers, and utility conduits for buildings, as well as sells energy and raw materials. In addition, it offers financial services. The company operates in North America, South America, Europe, the Middle East and Africa, and the Asia Pacific. Tenaris S.A. was incorporated in 2001 and is based in Luxembourg, Luxembourg. Tenaris S.A. is a subsidiary of Techint Holdings S. r.l.

Tenaris S.A.

The significance of a company's longevity in the market

Years since IPO

Evaluation of recent trends and improvements in the company's revenue

Revenue Growth

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Debt

LUXEMBOURG, MARCH 05, 2026 (GLOBE NEWSWIRE) -- IN COMPLIANCE WITH REGULATION (EU) NO 596/2014 ON MARKET ABUSE AND APPLICABLE LUXEMBOURG LAWS AND REGULATIONS, TENARIS S.A. (NYSE AND MEXICO: TS AND EXM ITALY: TEN) ANNOUNCES THAT IT HAS RECEIVED A NOTIFICATION OF A SECURITIES TRANSACTION FROM A PERSON DISCHARGING MANAGERIAL RESPONSIBILITIES (AS DEFINED IN SUCH REGULATION). AS REQUIRED BY SUCH LAWS AND REGULATIONS, SUCH NOTIFICATION HAS BEEN FILED WITH THE LUXEMBOURGCOMMISSION DE SURVEILLANCE DU SECTEUR FINANCIER AND THE LUXEMBOURG STOCK EXCHANGE; AND CAN BE ACCESSED THROUGH THE FOLLOWING LINK: HTTPS://WWW.BOURSE.LU/OAM-SEARCH

SECURITIES TRANSACTIONS BY PERSONS DISCHARGING MANAGERIAL RESPONSIBILITIES UNDER REGULATION (EU) NO 596/2014 ON MARKET ABUSE

LUXEMBOURG, FEB. 23, 2026 (GLOBE NEWSWIRE) -- TENARIS S.A. (NYSE AND MEXICO: TS AND EXM ITALY: TEN) (TENARIS) ANNOUNCED TODAY THAT IT HAS DECIDED TO TERMINATE, EFFECTIVE ON MARCH 3, 2026, THE SECOND TRANCHE OF ITS SHARE BUYBACK PROGRAM ANNOUNCED ON MAY 27, 2025 (THE PROGRAM).

TENARIS TERMINATES SECOND TRANCHE OF ITS USD 1.2 BILLION SHARE BUYBACK PROGRAM

THE FINANCIAL AND OPERATIONAL INFORMATION CONTAINED IN THIS PRESS RELEASE IS BASED ON AUDITED CONSOLIDATED FINANCIAL STATEMENTS PRESENTED IN U.S. DOLLARS AND PREPARED IN ACCORDANCE WITH INTERNATIONAL FINANCIAL REPORTING STANDARDS AS ISSUED BY THE INTERNATIONAL ACCOUNTING STANDARD BOARD AND ADOPTED BY THE EUROPEAN UNION, OR IFRS.ADDITIONALLY, THIS PRESS RELEASE INCLUDES NON-IFRS ALTERNATIVE PERFORMANCE MEASURES I.E., EBITDA, FREE CASH FLOW, NET CASH / DEBT AND OPERATING WORKING CAPITAL DAYS. SEE EXHIBIT I FOR MORE DETAILS ON THESE ALTERNATIVE PERFORMANCE MEASURES.

TENARIS ANNOUNCES 2025 FOURTH QUARTER AND ANNUAL RESULTS

LUXEMBOURG, DEC. 17, 2025 (GLOBE NEWSWIRE) -- PURSUANT TO APPLICABLE LUXEMBOURG TRANSPARENCY LAW REQUIREMENTS, TENARIS S.A. (NYSE AND MEXICO: TS AND EXM ITALY: TEN) (TENARIS OR THE COMPANY) ANNOUNCES THAT ON DECEMBER 17, 2025, THE PROPORTION OF OWN ORDINARY SHARES ACQUIRED UNDER ITS SHARE BUYBACK PROGRAM AND CURRENTLY HELD IN TREASURY HAS REACHED 5.07% OF TENARIS'S VOTING RIGHTS. ORDINARY SHARES REPURCHASED UNDER SUCH PROGRAM ARE BEING HELD IN TREASURY (WITH THEIR VOTING RIGHTS SUSPENDED) AND WILL BE CANCELLED IN DUE COURSE. REPORTING OF SHARE BUYBACK TRANSACTIONS IN ACCORDANCE WITH MARKET ABUSE REGULATION IS AVAILABLE AT: HTTPS://IR.TENARIS.COM/SHARE-BUYBACK-PROGRAM.

REPURCHASED OWN ORDINARY SHARES REACHED 5% OF TENARIS'S VOTING RIGHTS; TENARIS'S CONTROLLING SHAREHOLDER FILES AMENDMENT TO SCHEDULE 13D

LUXEMBOURG, NOV. 02, 2025 (GLOBE NEWSWIRE) -- TENARIS S.A. (NYSE AND MEXICO: TS AND EXM ITALY: TEN) (TENARIS) ANNOUNCED TODAY THAT PURSUANT TO ITS USD 1.2 BILLION SHARE BUYBACK PROGRAM (THE PROGRAM) ANNOUNCED ON MAY 27, 2025, IT HAS ENTERED INTO A NON-DISCRETIONARY BUYBACK AGREEMENT WITH A PRIMARY FINANCIAL INSTITUTION (THE BANK) FOR THE EXECUTION OF ITS SECOND TRANCHE, COVERING UP TO THE REMAINDER USD 600 MILLION OF THE PROGRAM (EXCLUDING CUSTOMARY TRANSACTION FEES). THIS SECOND TRANCHE SHALL START ON NOVEMBER 3, 2025, AND END NO LATER THAN APRIL 30, 2026.

TENARIS TO COMMENCE A USD 600 MILLION SECOND TRANCHE OF ITS USD 1.2 BILLION SHARE BUYBACK PROGRAM

THE FINANCIAL AND OPERATIONAL INFORMATION CONTAINED IN THIS PRESS RELEASE IS BASED ON UNAUDITED CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS PRESENTED IN U.S. DOLLARS AND PREPARED IN ACCORDANCE WITH INTERNATIONAL FINANCIAL REPORTING STANDARDS AS ISSUED BY THE INTERNATIONAL ACCOUNTING STANDARD BOARD AND ADOPTED BY THE EUROPEAN UNION, OR IFRS. ADDITIONALLY, THIS PRESS RELEASE INCLUDES NON-IFRS ALTERNATIVE PERFORMANCE MEASURES I.E., EBITDA, FREE CASH FLOW, NET CASH / DEBT AND OPERATING WORKING CAPITAL DAYS. SEE EXHIBIT I FOR MORE DETAILS ON THESE ALTERNATIVE PERFORMANCE MEASURES.

TENARIS ANNOUNCES 2025 THIRD QUARTER RESULTS

LUXEMBOURG, SEPT. 30, 2025 (GLOBE NEWSWIRE) -- TENARIS S.A. (NYSE AND MEXICO: TS AND EXM ITALY: TEN) (TENARIS) ANNOUNCED TODAY THE COMPLETION OF THE FIRST USD600 MILLION TRANCHE OF ITS USD1.2 BILLION SHARE BUYBACK PROGRAM ANNOUNCED ON JUNE 6, 2025 (THE PROGRAM).

TENARIS COMPLETES USD600 MILLION FIRST TRANCHE OF ITS SHARE BUYBACK PROGRAM

LUXEMBOURG, SEPT. 19, 2025 (GLOBE NEWSWIRE) -- TENARIS S.A. (NYSE AND MEXICO: TS AND EXM ITALY: TEN) (TENARIS, OR THE COMPANY) ANNOUNCED THAT ITS INDIRECT CONTROLLING SHAREHOLDER SAN FAUSTIN S.A. AND ITS DIRECT CONTROLLING SHAREHOLDER TECHINT HOLDINGS S. R.L. (THE REPORTING PERSONS) FILED EARLIER TODAY WITH THE SEC AN AMENDMENT TO THEIR SCHEDULE 13D, REPORTING THAT, FOR PORTFOLIO-MANAGEMENT PURPOSES AND IN RESPONSE TO TENARIS'S ONGOING SHARE REPURCHASE PROGRAM CAUSING SAN FAUSTIN'S BENEFICIAL OWNERSHIP INTEREST IN TENARIS TO PASSIVELY INCREASE, ON SEPTEMBER 17, 2025, THE BOARD OF DIRECTORS OF SAN FAUSTIN HAD AUTHORIZED TECHINT HOLDINGS TO SELL A NUMBER OF ITS ORDINARY SHARES OF TENARIS, PROVIDED THAT TECHINT HOLDINGS' OWNERSHIP STAKE IN TENARIS SHOULD NOT FALL BELOW 67% OF TENARIS'S TOTAL OUTSTANDING ORDINARY SHARES. THE REPORTING PERSONS STATED THAT THE PRECISE TIMING, AMOUNT AND MANNER OF ANY SUCH SALES WILL DEPEND UPON MARKET CONDITIONS AND OTHER FACTORS, AND THAT THERE IS NO ASSURANCE THAT ANY SALES WILL BE COMPLETED OR THE TIMING THEREOF. THE REPORTING PERSONS ALSO NOTED THAT, ALTHOUGH THEY DO NOT CURRENTLY INTEND TO PURCHASE ORDINARY SHARES OR TO REDUCE THEIR BENEFICIAL OWNERSHIP BELOW 67% OF TENARIS'S TOTAL OUTSTANDING ORDINARY SHARES, THEY MAY FROM TIME TO TIME, DEPENDING ON MARKET CONDITIONS AND OTHER FACTORS, PURCHASE OR SELL ADDITIONAL ORDINARY SHARES, AND THAT, EXCEPT AS DESCRIBED ABOVE, THEY DO NOT HAVE ANY PRESENT PLANS OR PROPOSALS THAT RELATE TO OR WOULD RESULT IN ANY EXTRAORDINARY CORPORATE TRANSACTION OR LEAD TO THE ACQUISITION OF ADDITIONAL SECURITIES.

TENARIS'S CONTROLLING SHAREHOLDER FILES AN AMENDMENT TO SCHEDULE 13D IN RESPONSE TO TENARIS'S ONGOING SHARE BUYBACK PROGRAM

TENARIS ANNOUNCES 2025 SECOND QUARTER RESULTS

LUXEMBOURG, JUNE 18, 2025 (GLOBE NEWSWIRE) -- TENARIS S.A. (NYSE AND MEXICO: TS AND EXM ITALY: TEN) (TENARIS, OR THE COMPANY) ANNOUNCED TODAY THAT THE COMPANY'S CONTROLLING SHAREHOLDER, SAN FAUSTIN S.A. (SAN FAUSTIN), HAS NOTIFIED THE COMPANY THAT, AS A RESULT OF TENARIS'S OPEN MARKET REPURCHASES OF OWN SHARES UNDER ITS SHARE BUYBACK PROGRAM PUBLICLY ANNOUNCED ON MAY27, 2025, SAN FAUSTIN HAS PASSIVELY CROSSED A VOTING RIGHTS THRESHOLD TRIGGERING A NOTICE REQUIREMENT UNDER THE LUXEMBOURG TRANSPARENCY LAW.

Tenaris S.A.

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Tenaris S.A.

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