Investor Presentation April 2022

Global Leader in Steel Pipes for the • Energy Industry • Manufacturing facilities in 16 countries Annual steel pipe manufacturing capacity of 4.7 million tons of seamless pipes 3.2 million tons of welded pipes ⚫ 5 Electric steel shops, the least CO2 intensive steel production route 2021 Sales by Region (US$6.5 Bn) Middle East & Asia Pacific, 4% Africa, 13%. • R&D centers in 3 countries Service and distribution network in 25 countries • 23,000 employees (Dec.2021) • Revenue: US$ 6.5 billion (2021) • Stock exchange listings: New York, Italy and Mexico Europe, 11% South America, 20% North America, 52% Investor Presentation Tenaris April 2022 3

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