Tenaris acquisitions, on the record

Word for word“In Saudi Arabia, we increased our stake in GPC to gain a controlling position in this large diameter welded pipe mill that produces conductor casing and large diameter line pipe.” 20-F for 2023

Word for word“With the acquisition of the Shawcor pipe coating business, we are strengthening our line pipe business, especially for offshore line pipe, where Shawcor has a leading position in anti-corrosive and insulation coatings.” 20-F for 2023

Word for word“For example, in November 2023, Tenaris completed the acquisition of Mattr Corp oration’s (“ Mattr ”) pipe coating business unit.” 20-F for 2023

Word for word“Our subsidiary SSPC completed the acquisition of an additional 22.3% interest in GPC from Erndtebruecker Eisenwerk , a German company that owned a 35% interest in GPC, for a purchase price of $6.3 million paid in cash.” 20-F for 2023

Word for word“A n Italian subsidiary of the Company acquired all of the assets and related rights, duties, liabilities and contracts of Isoplus Mediterranean S.r.l.’s (“ Isoplus ”) anticorrosion coating division , renamed “Tenaris Coating”, for EUR9.0 million (approximately $9.8 million).” 20-F for 2023

Word for word“A U.S. subsidiary of the Company acquired all of the assets and related rights, duties, liabilities and contracts of Republic Tube ’s OCTG pipe processing facility in Houston, Texas for $90.5 million.” 20-F for 2023

Word for word“One of the Company’s subsidiaries acquired from Mattr , 100% of the shares of BSIBV, which holds Mattr’s pipe coating business (“ Shawcor ”) , for $182.6 million , subject to a customary price adjustment .” 20-F for 2023

Word for word“On November 30, 2023, we acquired the pipe coating business from Mattr , which has nine pipe coating facilities and two R&D centers around the world, and is a global leader in anti-corrosion and insulation coating for offshore pipelines.” 20-F for 2023

Word for word“Confab completed the acquisition of 11.0 million ordinary shares of Usiminas for approximately BRL110 million (approximately $23 million) in cash , increasing Tenaris’s participation in Usiminas ’ share capital to 3.96%.” 20-F for 2023

Word for word“At the end of 2023, for example , we acquired the global pipe coating business of Mattr, which has enhanced our range of pipe coating technologies and reinforced our capability to provide integrated pipe and coating solutions for offshore pipelines .” 20-F for 2024

Word for word“On January 2, 2020, we acquired IPSCO, a U.S. seamless and welded pipe producer, and, in September 2023, we acquired Republic Tube’s OCTG pipe processing facility in Houston with heat treatment and threading operations, further strengthening our local production capabilities and capacity to provide Rig Direct ® services in the United States.” 20-F for 2024

Word for word“On January 2, 2020, we acquired IPSCO, a U.S. seamless and welded pipe producer, and, in September 2023, we acquired Republic Tube’s OCTG pipe processing facility in Houston with heat treatment and threading operations, further strengthening our local production capabilities and capacity to provide Rig Direct ® services in the United States.” 20-F for 2024

Word for word“In January 2019, we acquired 47.8% of SSPC, a listed ERW steel pipe producer.” 20-F for 2024

Word for word“In Colombia, we have established a leading position in the market for OCTG products since 2006, following our acquisition of TuboCaribe, a welded pipe manufacturing facility located in Cartagena.” 20-F for 2024

Word for word“On July 3, 2023, Confab, together with Ternium (through its subsidiaries Ternium Investments and Ternium Argentina), acquired an additional 68.7 million ordinary shares of Usiminas, at a price of BRL10 per ordinary share.” 20-F for 2024

Word for word“Koppel, Pennsylvania : Acquired in 2020, the facility is located on an area of 89 hectares and consists of a steel shop with an annual production capacity of 430,000 tons of steel bars and a heat treatment line .” 20-F for 2024

Word for word“On November 30, 2023, we acquired the pipe coating business of Mattr, which has nine pipe coating facilities and two R&D centers around the world, and is a global leader in anti-corrosion and insulation coating for offshore pipelines.” 20-F for 2024

Word for word“In May 2023, SSPC increased its participation in GPC to 57.3% when the German shareholder in GPC decided to exit.” 20-F for 2024

Word for word“Our participation in the joint venture is 60%.” 20-F for 2024

Word for word“In 2025, we acquired a scrap processing business in Beaver Falls in Pennsylvania, United States.” 20-F for 2025

Word for word“At the end of 2023, for example, we acquired the global pipe-coating business of Mattr, which has enhanced our range of pipe-coating technologies and reinforced our capability to provide integrated pipe and coating solutions for offshore pipelines.” 20-F for 2025

Word for word“In January 2019, we acquired 47.8% of SSPC, a listed ERW steel pipe producer.” 20-F for 2025