Tenaris S.A.(TS) - 2019 Q4 - Annual Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F or ☐ Shell company report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission file number: 001-31518 (Mark One) ☐ Registration statement pursuant to Section 12(b) or 12(g) of the Securities Exchange Act of 1934 or ☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2019 or ☐ Transition report pursuant to Section 13 or 15(d) ...