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Note 34 - Delisting of Tenaris's Shares from the Buenos Aires Stock Exchange	12 Months Ended
	Dec. 31, 2019
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Delisting of shares from stock exchange [text block]	34 Delisting of Tenaris’s shares from the Buenos Aires stock exchange On July 29, 2019, the General Shareholders Meeting approved the delisting of the Company’s shares from the Buenos Aires stock exchange, Bolsas y Mercados Argentinos S.A. (“BYMA”), through a voluntarily withdrawal from listing of the Argentine National Securities Commission (Comisión Nacional de Valores, or “CNV”) pursuant to Article 32, clause c), Section VIII, Chapter II of Title III of the rules (Normas) of the CNV, which permits the Company to delist from BYMA without making a delisting public tender offer. On September 19, 2019, the CNV authorized the delisting of the Company’s shares in Argentina, and such delisting became effective as of the close of business on October 10, 2019. Although shareholders holding shares through Caja de Valores S.A. (“CVSA”) on June 11, 2019 who were absent from the General Shareholders Meeting were entitled to appraisal rights provided pursuant to article 22 of the Company’s articles of association, no shareholder eligible to do so exercised such right.

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