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FORM 6 - K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a - 16 or 15d - 16 of

the Securities Exchange Act of 1934

As of July 31, 2019

TENARIS, S.A.

(Translation of Registrant's name into English)

TENARIS, S.A.

29, Avenue de la Porte-Neuve 3rd floor

L-2227 Luxembourg

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or 40-F.

Form 20-F Ö Form 40-F

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12G3-2(b) under the Securities Exchange Act of 1934.

Yes ___ No Ö

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82

The attached material is being furnished to the Securities and Exchange Commission pursuant to Rule 13a-16 and Form 6-K under the Securities Exchange Act of 1934, as amended. This report contains Tenaris S.A. Half-year report 2019-Interim management report.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: July 31, 2019

Tenaris, S.A.

By: /s/ Cecilia Bilesio

Cecilia Bilesio

Corporate Secretary

TENARIS S.A.

HALF-YEAR REPORT 2019

Tenaris S.A. Half-year report 2019-Interim management report

TABLE OF CONTENTS

INTERIM MANAGEMENT REPORT	3
COMPANY OVERVIEW	4
PRINCIPAL RISKS AND UNCERTAINTIES	5
BUSINESS OVERVIEW	6
RELATED PARTY TRANSACTIONS	11
MANAGEMENT CERTIFICATION	12
FINANCIAL INFORMATION	13
CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS	13
EXHIBIT	36
INVESTOR INFORMATION	37

Tenaris S.A. Half-year report 2019-Interim management report

INTERIM MANAGEMENT REPORT

CERTAIN DEFINED TERMS

Unless otherwise specified or if the context so requires:

References in this half-year report to “the Company” are exclusively to Tenaris S.A., a Luxembourg public limited liability company (société anonyme).

References in this half-year report to “Tenaris”, “we”, “us” or “our” are to Tenaris S.A. and its consolidated subsidiaries.

References in this half-year report to “San Faustin” are to San Faustin S.A., a Luxembourg public limited liability company (société anonyme) and the Company’s controlling shareholder.

“Shares” refers to ordinary shares, par value $1.00, of the Company.

“ADSs” refers to the American Depositary Shares, which are evidenced by American Depositary Receipts, and represent two Shares each.

“OCTG” refers to oil country tubular goods.

“tons” refers to metric tons; one metric ton is equal to 1,000 kilograms, 2,204.62 pounds, or 1.102 U.S. (short) tons.

“billion” refers to one thousand million, or 1,000,000,000.

“U.S. dollars”, “US$”, “USD” or “$” each refers to the United States dollar.

PURPOSE

This half-year report for the six-month period ended June 30, 2019 has been prepared in compliance with Article 4 of the Luxembourg Transparency Law of 11 January 2008, and should be read in conjunction with the annual report for the year ended December 31, 2018 (including the financial statements included therein) and the unaudited consolidated condensed interim financial statements included in this half-year report.

PRESENTATION OF CERTAIN FINANCIAL AND OTHER INFORMATION

Accounting Principles

We prepare our consolidated financial statements in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standard Board (“IASB”) and in conformity with IFRS as adopted by the European Union (“EU”).

We publish consolidated financial statements expressed in U.S. dollars. The unaudited consolidated condensed interim financial statements included in this half-year report have been prepared in accordance with IAS 34, “Interim Financial Reporting”. These unaudited consolidated condensed interim financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2018, which have been prepared in accordance with IFRS. See Note 2 “Accounting Policies and Basis of Presentation” to our unaudited consolidated condensed interim financial statements included in this half-year report.

The unaudited consolidated condensed interim financial statements included in this half-year report have been reviewed by PricewaterhouseCoopers Société coopérative, Cabinet de révision agréé, for purposes of complying with the requirements of the different jurisdictions where the Company is publicly listed.

Whenever necessary, certain comparative amounts have been reclassified to conform to changes in presentation in the current period.

Rounding

Certain monetary amounts, percentages and other figures included in this half-year report have been subject to rounding adjustments. Accordingly, figures shown as totals in certain tables may not be the arithmetic aggregation of the figures that precede them, and figures expressed as percentages in the text may not total 100% or, as applicable, when aggregated may not be the arithmetic aggregation of the percentages that precede them.

Tenaris S.A. Half-year report 2019-Interim management report

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

This half-year report and any other oral or written statements made by us to the public may contain “forward-looking statements”. Forward looking statements are based on management’s current views and assumptions and involve known and unknown risks that could cause actual results, performance or events to differ materially from those expressed or implied by those statements.

We use words such as “aim”, “will likely result”, “will continue”, “contemplate”, “seek to”, “future”, “objective”,

“goal”, “should”, “will pursue”, “anticipate”, “estimate”, “expect”, “project”, “intend”, “plan”, “believe” and words and terms of similar substance to identify forward-looking statements, but they are not the only way we identify such statements. All forward-looking statements are management’s present expectations of future events and are subject to a number of factors and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. These factors include the risks related to our business discussed under “Principal Risks and Uncertainties”, among them, the following:

our ability to implement our business strategy or to grow through acquisitions, joint ventures and other investments;

the competitive environment in our business and our industry;

our ability to price our products and services in accordance with our strategy;

our ability to absorb cost increases and to secure supplies of essential raw materials and energy;

our ability to adjust fixed and semi-fixed costs to fluctuations in product demand;

trends in the levels of investment in oil and gas exploration and drilling worldwide;

general macroeconomic and political conditions and developments in the countries in which we operate or distribute pipes and

changes to applicable laws and regulations, including the imposition of tariffs or quotas or other trade barriers.

By their nature, certain disclosures relating to these and other risks are only estimates and could be materially different from what actually occurs in the future. As a result, actual future gains or losses that may affect our financial condition and results of operations could differ materially from those that have been estimated. You should not place undue reliance on the forward-looking statements, which speak only as of the date of this half-year report. Except as required by law, we are not under any obligation, and expressly disclaim any obligation to, update or alter any forward-looking statements, whether as a result of new information, future events or otherwise.

COMPANY OVERVIEW

We are a leading global manufacturer and supplier of steel pipe products and related services for the world’s energy industry and for other industrial applications. Our customers include most of the world’s leading oil and gas companies as well as engineering companies engaged in constructing oil and gas gathering, transportation, processing and power generation facilities. Our principal products include casing, tubing, line pipe, and mechanical and structural pipes.

We operate an integrated worldwide network of steel pipe manufacturing, research, finishing and service facilities with industrial operations in the Americas, Europe, Asia and Africa and a direct presence in most major oil and gas markets.

Our mission is to deliver value to our customers through product development, manufacturing excellence, and supply chain management. We seek to minimize risk for our customers and help them reduce costs, increase flexibility and improve time-to-market. Our employees around the world are committed to continuous improvement by sharing knowledge across a single global organization.

For more information on the Company, including its competitive strengths, business segments and products see our annual report for the year ended December 31, 2018, and for a discussion and analysis of our financial condition and results of operations see “Business overview - Operating and Financial Review and Prospects” in this half-year report.

Tenaris S.A. Half-year report 2019-Interim management report

PRINCIPAL RISKS AND UNCERTAINTIES

We face certain risks associated to our business and the industry in which we operate. We are a global steel pipe manufacturer with a strong focus on manufacturing products and related services for the oil and gas industry. Demand for our products depends primarily on the level of exploration, development and production activities of oil and gas companies which is affected by current and expected future prices of oil and natural gas. Several factors, such as the supply and demand for oil and gas, and political and global economic conditions, affect, and may continue to affect, these prices. Furthermore, climate change legislation or regulations could curtail demand for fossil fuels and therefore demand for our products and services could be reduced. When oil and gas prices fall, oil and gas companies are generally expected to hold or reduce purchases of additional steel pipe products. Performance may be further affected by changes in governmental policies, the impact of credit restrictions on our customers’ ability to perform their payment obligations with us, and any adverse economic, political or social developments in our major markets. Furthermore, competition in the global market for steel pipe products may cause us to lose market share and hurt our sales and profitability. In addition, there is an increased risk that unfairly-traded steel pipe imports in markets in which Tenaris produces and sells its products may affect Tenaris’s market share, deteriorate the pricing environment and hurt sales and profitability. Limitations on our ability to protect our intellectual property rights, including our trade secrets, could cause a loss in revenue and any competitive advantage we hold. Furthermore, cyberattacks could have a material adverse impact on our business and results of operation. Profitability may also be hurt if increases in the cost of raw materials, energy and other costs and limitations or disruptions to the supply of raw materials and energy, resulting in higher costs of production which cannot be offset by higher selling prices or if the limited availability of such resources forces us to curtail production. Disruptions to our manufacturing processes could adversely affect our operations, customer service levels and financial results. Low levels of capacity utilization could also affect our results of operations and financial conditions. A recession in the developed countries, a cooling of emerging market economies or an extended period of below-trend growth in the economies that are major consumers of steel pipe products would likely result in reduced demand of our products, adversely affecting our revenues, profitability and financial condition.

We have significant operations in various countries, including Argentina, Brazil, Canada, Colombia, Indonesia, Italy, Japan, Mexico, Nigeria, Romania, Saudi Arabia and the United States, and we sell our products and services throughout the world. Additionally, we recently announced plans to form a joint venture with PAO Severstal, or Severstal, to build a welded pipe plant in Russia. Therefore, like other companies with worldwide operations, our business and operations have been, and could in the future be, affected from time to time to varying degrees by political, economic and social developments and changes in, laws and regulations. These developments and changes may include, among others, nationalization, expropriations or forced divestiture of assets; restrictions on production, imports and exports, interruptions in the supply of essential energy inputs; restrictions on the exchange or transfer of currency, repatriation of capital, or payment of dividends or other contractual obligations; inflation; devaluation; war or other international conflicts; civil unrest and local security concerns, including high incidences of crime and violence involving drug trafficking organizations that threaten the safe operation of our facilities and operations; direct and indirect price controls; tax increases and changes in the interpretation, application or enforcement of tax laws and other retroactive tax claims or challenges; cancellation of contract rights; and delays or denials of governmental approvals. As a global company, a portion of our business is carried out in currencies other than the U.S. dollar, which is the Company’s functional and presentation currency. As a result, we are exposed to foreign exchange rate risk, which could adversely affect our financial position and results of operations. In addition, we may be subject to regulatory risks associated with our import and export activities.

Following the nationalization by the Venezuelan government of the Company’s interests in its majority-owned subsidiaries TAVSA - Tubos de Acero de Venezuela S.A. (“Tavsa”) and Matesi Materiales Siderúrgicos S.A (“Matesi”) and in Complejo Siderúrgico de Guayana, C.A (“Comsigua”), the Company and its wholly-owned subsidiary Talta - Trading e Marketing Sociedad Unipessoal Lda (“Talta”) initiated arbitration proceedings against Venezuela before the ICSID in Washington D.C. in connection with these nationalizations and obtained favorable awards, which are final and not subject to further appeals. For further information on these cases, see Note 30 in the Company’s audited Consolidated Financial Statements for the year ended December 31, 2018.

A key element of our business strategy is to develop and offer higher value-added products and services and to continuously identify and pursue growth-enhancing strategic opportunities. Even if we successfully implement our business strategy, it may not yield the expected results. We must necessarily base any assessment of potential acquisitions, joint ventures and investments, on assumptions with respect to operations, profitability and other matters that may subsequently prove to be incorrect. Failure to successfully implement our strategy, or to integrate future acquisitions and strategic investments, or to sell acquired assets or business unrelated to our business under favorable terms and conditions, could affect our ability to grow, our competitive position and our sales and profitability.

We may be required to record a significant charge to earnings if we must reassess our goodwill or other assets as a result of changes in assumptions underlying the carrying value of certain assets, particularly as a consequence of deteriorating market conditions. At June 30, 2019 we had $1,321 million in goodwill corresponding mainly to the acquisition of Hydril, in 2007 and Maverick, in 2006. If our management was to determine in the future that the goodwill or other assets were impaired, particularly as a consequence of deteriorating market conditions, we would be required to recognize a non-cash charge to reduce the value of these assets, which would adversely affect our results of operations.

Tenaris S.A. Half-year report 2019-Interim management report

Potential environmental, product liability and other claims arising from the inherent risks associated with the products we sell and the services we render, including well failures, line pipe leaks, blowouts, bursts and fires, that could result in death, personal injury, property damage, environmental pollution or loss of production could create significant liabilities for us. Environmental laws and regulations may, in some cases, impose strict liability (even joint and several strict liability) rendering a person liable for damages to natural resources or threats to public health and safety without regard to negligence or fault. In addition, we are subject to a wide range of local, provincial and national laws, regulations, permit requirements and decrees relating to the protection of human health and the environment, including laws and regulations relating to hazardous materials and radioactive materials and environmental protection governing air emissions, water discharges and waste management. Laws and regulations protecting the environment have become increasingly complex and more stringent and expensive to implement in recent years. The cost of complying with such regulations is not always clearly known or determinable since some of these laws have not yet been promulgated or are under revision. These costs, along with unforeseen environmental liabilities, may increase our operating costs or negatively impact our financial condition and profitability.

We operate globally and conduct business in certain countries known to experience corruption. Although we are committed to conducting business in a legal and ethical manner in compliance with local and international statutory requirements and standards applicable to our business, there is a risk that our employees, representatives, affiliates, or other persons may take actions that violate applicable laws and regulations that generally prohibit the making of improper payments, including to foreign government officials, for the purpose of obtaining or keeping business, including laws relating to the 1997 OECD Convention on Combating Bribery of Foreign Public Officials in International Business Transactions such as the U.S. Foreign Corrupt Practices Act (“FCPA”). Investigations by government authorities may occupy considerable management time and attention and result in significant expenditures, fines, penalties or other sanctions, as well as private lawsuits.

As a holding company, our ability to pay cash dividends and make other payments to us depends on the results of operations and financial condition of our subsidiaries, which could be restricted by legal, contractual or other limitations, including exchange controls or transfer restrictions, and other agreements and commitments of our subsidiaries.

The Company’s controlling shareholder may be able to take actions that do not reflect the will or best interests of other shareholders.

BUSINESS OVERVIEW

Operating and Financial Review and Prospects

The following discussion and analysis should be read in conjunction with the audited consolidated financial statements and the related notes included in our annual report for the year ended December 31, 2018, and is based on, and should be read in conjunction with, the unaudited consolidated condensed interim financial statements for the six-month period ended June 30, 2019, included in this half-year report.

Certain information contained in this discussion and analysis and presented elsewhere in this half-year report, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties. See “Cautionary Statement Concerning Forward-Looking Statements” in this half-year report. In evaluating this discussion and analysis, you should specifically consider the various risk factors identified in “Principal Risks and Uncertainties”, other risk factors identified elsewhere in this half-year report and other factors that could cause results to differ materially from those expressed in such forward-looking statements.

Market Background and Outlook

In the USA, drilling activity has slowed down and is likely to remain around the present level as oil and gas prices have been subdued and operators maintain a disciplined approach to capital expenditures. In Canada, drilling activity remains well down on last year with no recovery expected before the end of the year.

In Latin America, drilling activity is expected to remain at current levels until the end of the year amid uncertainty about elections in Argentina and the financial position of Pemex.

In the eastern Hemisphere, drilling activity continues to improve, led by gas developments in the Middle East, and a gradual recovery in some offshore basins.

In the third quarter, our sales will be affected by lower average selling prices, seasonal factors and the impact of major maintenance stoppages amplified by the triennial intervention in Mexico, before recovering in the fourth quarter. We expect to mitigate most of the impact of lower average selling prices with lower costs and complete the year with an overall EBITDA margin similar to that of 2018.

Tenaris S.A. Half-year report 2019-Interim management report

Results of Operations

Unaudited consolidated condensed interim income statement

(all amounts in thousands of U.S. dollars, unless otherwise stated)	Six-month period ended June 30,
	2019					2018
Continuing operations				%					%
Net sales		3,789,724		100.0			3,654,719		100.0
Cost of sales		(2,614,618	)	(69.0	)		(2,532,063	)	(69.3	)
Gross profit		1,175,106		31.0			1,122,656		30.7
Selling, general and administrative expenses		(683,974	)	(18.0	)		(687,208	)	(18.8	)
Other operating income (expense), net		2,372		0.1			(815	)	-
Operating income		493,504		13.0			434,633		11.9
Finance Income		23,197		0.6			18,982		0.5
Finance Cost		(18,269	)	(0.5	)		(20,596	)	(0.6	)
Other financial results		13,330		0.4			32,317		0.9
Income before equity in earnings of non-consolidated companies and income tax		511,762		13.5			465,336		12.7
Equity in earnings of non-consolidated companies		55,424		1.5			86,946		2.4
Income before income tax		567,186		15.0			552,282		15.1
Income tax		(84,898	)	(2.2	)		(150,576	)	(4.1	)
Income for the period		482,288		12.7			401,706		11.0

Attributable to:
Owners of the parent		484,365		12.8			403,311		11.0
Non-controlling interests		(2,077	)	(0.1	)		(1,605	)	-
		482,288					401,706

Selected consolidated financial position data

(all figures are in Thousands)	June 30,		December 31,
	2019		2018
Current assets		5,752,400		5,464,192
Property, plant and equipment, net		6,173,577		6,063,908
Other non-current assets		3,057,470		2,723,199
Total assets		14,983,447		14,251,299

Current liabilities		1,956,940		1,718,363
Non-current borrowings		49,375		29,187
Deferred tax liabilities		355,302		379,039
Other non-current liabilities		471,634		249,218
Total liabilities		2,833,251		2,375,807

Capital and reserves attributable to the owners of the parent		11,941,498		11,782,882
Non-controlling interests		208,698		92,610
Equity		12,150,196		11,875,492
Total liabilities and equity		14,983,447		14,251,299
Number of shares outstanding		1,180,537		1,180,537

Tenaris S.A. Half-year report 2019-Interim management report

Six-month period ended June 30, 2019, compared to six-month period ended June 30, 2018

Summary

Our sales in the first half of 2019 increased 4% compared to the first half of 2018. While volumes sold declined 6%, average selling prices increased 10% as the proportion of seamless pipes sold increased after completion of deliveries to Zohr project in the Middle East and Africa region. Sales increased in all regions, except in the Middle East and Africa. EBITDA increased 6% to $760 million in the first half of 2019 compared to $717 million in the first half of 2018, following the increase in sales. Net income attributable to owners of the parent during the first half of 2019 was $484 million or $0.82 per ADS, which compares with $403 million or $0.68 per ADS in the first half of 2018. The improvement in net income mainly reflects a better operating environment together with a lower income tax, partially offset by lower financial results and results from associated companies.

Cash flow provided by operating activities amounted to $890 million during the first half of 2019, including a reduction in working capital of $346 million. Following a dividend payment of $331 million in May 2019, and capital expenditures of $183 million during the first half of 2019, we maintained a positive net cash position (i.e., cash, other current and non-current investments, derivatives hedging borrowings and investments less total borrowings) of $706 million at the end of June 2019.

The following table shows our net sales by business segment for the periods indicated below:

Millions of U.S. dollars	For the six-month period ended June 30,								Increase /
	2019				2018				Decrease
Tubes		3,578	94	%		3,452	94	%		4	%
Others		212	6	%		203	6	%		5	%
Total		3,790	100	%		3,655	100	%		4	%

Tubes

The following table indicates for our Tubes business segment, sales volumes of seamless and welded pipes for the

periods indicated below:

Thousands of tons	For the six-month period ended June 30,				Increase /
	2019		2018		Decrease
Seamless		1,314		1,340		(2	%)
Welded		357		431		(17	%)
Total		1,671		1,771		(6	%)

The following table indicates, for our Tubes business segment, net sales by geographic region, operating income and operating income as a percentage of net sales for the periods indicated below:

Millions of U.S. dollars	For the six-month period ended June 30,						Increase /
Net sales	2019			2018			Decrease
- North America		1,757			1,634			8	%
- South America		667			595			12	%
- Europe		352			331			6	%
- Middle East & Africa		616			755			(18	%)
- Asia Pacific		186			137			36	%
Total net sales		3,578			3,452			4	%
Operating income		455			391			16	%
Operating income (% of sales)		12.7	%		11.3	%

Net sales of tubular products and services increased 4% to $3,578 million in the first half of 2019, compared to $3,452 million in the first half of 2018, as a reduction of 6% in volumes was offset by an increase in average selling prices as the proportion of seamless pipes increased following the completion of deliveries of welded pipes to Zohr project offshore Egypt. The increase in sales came from all regions, except the Middle East and Africa. In the first half of 2019, the average number of active drilling rigs, or rig count grew 3% worldwide compared to the first half of 2018. Rig count in the United States and Canada declined 3%, while in the rest of the world the rig count grew 10% year on year.

Tenaris S.A. Half-year report 2019-Interim management report

Operating results from tubular products and services increased 16%, from $391 million in the first half of 2018, to $455 million in the first half of 2019. Results improved following an increase in sales and in margins due a richer mix of products sold.

Others

The following table indicates, for our Others business segment, net sales, operating income and operating income as a percentage of net sales for the periods indicated below:

Millions of U.S. dollars	For the six-month period ended June 30,						Increase /
	2019			2018			Decrease
Net sales		212			203			5	%
Operating income		39			44			(11	%)
Operating income (% of sales)		18.4	%		21.6	%

Net sales of other products and services increased 5% to $212 million in the first half of 2019, compared to $203 million in the first half of 2018, mainly due to higher sales of sucker rods.

Operating income from other products and services decreased from $44 million in the first half of 2018 to $39 million in the first half of 2019 due to a decrease in operating margin from 22% to 18%.

Selling, general and administrative expenses, or SG&A, amounted to $684 million in the first half of 2019, representing 18% of sales, and $687 million in the first half of 2018, representing 19% of sales.

Financial results amounted to a gain of $18 million in the first half of 2019, compared to a gain of $31 million in the first half of 2018. The gain in the first half of 2019 corresponds mainly to an FX gain of $18 million; $19 million related to the Argentine peso devaluation on Peso denominated financial, trade, social and fiscal payables at Argentine subsidiaries which functional currency is the U.S. dollar. The gain in the first half of 2018 corresponds mainly to a gain of $19 million related to the Argentine peso devaluation and $14 million related to the Euro depreciation on Euro denominated intercompany liabilities (of which $13 million were offset in the currency translation reserve in equity).

Equity in earnings of non-consolidated companies generated a gain of $55 million in the first half of 2019, compared to a gain of $87 million in the first half of 2018. These results are mainly derived from our equity investment in Ternium (NYSE:TX).

Income tax amounted to a charge of $85 million in the first half of 2019, compared to $151 million in the first half of 2018. The income tax charge in the first half of 2018 was affected by the Mexican and Argentine peso devaluation on the tax base at our Mexican and Argentine subsidiaries which have the U.S. dollar as their functional currency. During the first half of 2019, our income tax charge was reduced mainly by the application of the fiscal adjustment in Argentine subsidiaries (~$32 million).

Liquidity and Capital Resources

The following table provides certain information related to our cash generation and changes in our cash and cash

equivalents position for the periods indicated below:

Tenaris S.A. Half-year report 2019-Interim management report

Millions of U.S. dollars	For the six-month period ended June 30,
	2019			2018
Net cash provided by operating activities		890			322
Net cash (used in) provided by investing activities		(14	)		235
Net cash (used in) financing activities		(119	)		(453	)
Increase in cash and cash equivalents		757			104

Cash and cash equivalents at the beginning of year		427			330
Effect of exchange rate changes		(1	)		(7	)
Increase in cash and cash equivalents		757			104
Cash and cash equivalents at period end (net of overdrafts)		1,183			427

Cash and cash equivalents at period end (net of overdrafts)		1,183			427
Bank overdrafts		19			1
Other current investments		361			730
Non Current Investments		23			193
Borrowings		(894	)		(840	)
Derivatives hedging borrowings and investments		15			(88	)
Net cash		706			423

Net cash provided by operating activities during the first half of 2019 amounted to $890 million (including a reduction in working capital of $346 million), compared to cash provided by operations of $322 million (net of an increase in working capital of $358 million) in the first half of 2018.

Capital expenditures amounted to $183 million in the first half of 2019, compared to $196 million in the first half of 2018. Free cash flow amounted to $707 million in the first half of 2019.

Following a dividend payment of $331 million in May 2019, our financial position at June 30, 2019, amounted to a net cash position (i.e., cash, other current and non-current investments, derivatives hedging borrowings and investments less total borrowings) of $706 million.

Tenaris S.A. Half-year report 2019-Interim management report

OTHER SIGNIFICANT EVENTS OF THE PERIOD

Annual General Meeting of Shareholders

On May 6, 2019, the Company’s annual general shareholders’ meeting approved all resolutions on its agenda.

Among other resolutions adopted at the meeting, the shareholders approved the consolidated financial statements as of and for the year ended December 31, 2018, and the annual accounts as at December 31, 2018, and acknowledged the related management and independent auditors' reports and certifications.

The meeting also approved the payment of a dividend for the year ended December 31, 2018, of $0.41 per share (or $0.82 per ADS), or approximately $484 million, which includes the interim dividend of $0.13 per share (or $0.26 per ADS), or approximately $153 million, paid in November 2018. Tenaris paid the balance of the annual dividend in the amount of $0.28 per share ($0.56 per ADS), or approximately $331 million in May 2019.

The annual general meeting resolved to (i) maintain the number of members of the Board of Directors at eleven; and (ii) re-appoint Mr. Roberto Bonatti, Mr. Carlos Condorelli, Mr. Germán Curá, Mr. Roberto Monti, Mr. Gianfelice Mario Rocca, Mr. Paolo Rocca, Mr. Jaime Serra Puche, Mr Yves Speeckaert, Ms. Mónica Tiuba, Mr Amadeo Vázquez y Vázquez and Mr. Guillermo Vogel to the Board of Directors, each to hold the office until the next annual general meeting of shareholders that will be convened to decide on the Company’s 2019 annual accounts.

The board of directors subsequently confirmed and re-appointed Mr. Amadeo Vázquez y Vázquez, Mr. Jaime Serra Puche, Mr. Roberto Monti and Ms. Mónica Tiuba as members of Tenaris’s audit committee. Mr. Vázquez y Vázquez will continue as chairman. All of them qualify as independent directors for purposes of applicable law, and Messrs. Monti, Serra Puche and Vázquez y Vázquez also qualify as independent directors under the Company’s articles of association.

The meeting appointed PricewaterhouseCoopers Société coopérative, Cabinet de révision agréé (member firm of PwC International Limited) as Tenaris’s independent auditors for the fiscal year ending December 31, 2019.

RELATED PARTY TRANSACTIONS

Tenaris is a party to several related party transactions, which include, among others, purchases and sales of goods (including steel pipes, flat steel products, steel bars, raw materials, gas and electricity) and services (including engineering services and related services) from or to entities controlled by San Faustin or in which San Faustin holds significant interests. Material related party transactions are subject to the review of the audit committee of the Company’s board of directors and the requirements of the Company’s articles of association and Luxembourg law. For further detail on Tenaris’s related party transactions, see Note 17 “Related party transactions” to our unaudited consolidated condensed interim financial statements included in this half-year report.

Tenaris S.A. Half-year report 2019-Interim management report

MANAGEMENT CERTIFICATION

We confirm, to the best of our knowledge, that:

the unaudited consolidated condensed interim financial statements prepared in conformity with International Financial Reporting Standards included in this half year report, give a true and fair view of the assets, liabilities, financial position and profit or loss of Tenaris S.A. and its consolidated subsidiaries, taken as a whole; and

the interim management report included in this half year report, includes a fair review of the important events that have occurred during the six-month period ended June 30, 2019, and their impact on the unaudited consolidated condensed interim financial statements for such period, material related party transactions and a description of the principal risks and uncertainties they face.

/s/ Paolo Rocca

Chief Executive Officer

Paolo Rocca

July 31, 2019

/s/ Edgardo Carlos

Chief Financial Officer

Edgardo Carlos

July 31, 2019

Tenaris S.A. Half-year report 2019-Interim management report

FINANCIAL INFORMATION

CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS

JUNE 30, 2019

Tenaris S.A. Half-year report 2019-Interim management report

TENARIS S.A.

CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS

June 30, 2019

29, Avenue de la Porte-Neuve – 3rd Floor.

L - 2227 Luxembourg

R.C.S. Luxembourg: B 85 203

Tenaris S.A. Half-year report 2019-Interim management report

CONSOLIDATED CONDENSED INTERIM INCOME STATEMENT

(all amounts in thousands of U.S. dollars, unless otherwise stated)			Three-month period ended June 30,						Six-month period ended June 30,
	Notes		2019			2018			2019			2018
Continuing operations			(Unaudited)						(Unaudited)
Net sales		3		1,917,965			1,788,484			3,789,724			3,654,719
Cost of sales		4		(1,342,819	)		(1,226,557	)		(2,614,618	)		(2,532,063	)
Gross profit				575,146			561,927			1,175,106			1,122,656
Selling, general and administrative expenses		5		(338,608	)		(337,574	)		(683,974	)		(687,208	)
Other operating income (expense), net				(2,050	)		(1,917	)		2,372			(815	)
Operating income				234,488			222,436			493,504			434,633
Finance Income		6		12,736			9,609			23,197			18,982
Finance Cost		6		(11,287	)		(10,422	)		(18,269	)		(20,596	)
Other financial results		6		(7,585	)		39,383			13,330			32,317
Income before equity in earnings of non-consolidated companies and income tax				228,352			261,006			511,762			465,336
Equity in earnings of non-consolidated companies				26,289			40,920			55,424			86,946
Income before income tax				254,641			301,926			567,186			552,282
Income tax				(14,942	)		(135,454	)		(84,898	)		(150,576	)
Income for the period				239,699			166,472			482,288			401,706

Attributable to:
Owners of the parent				241,486			168,328			484,365			403,311
Non-controlling interests				(1,787	)		(1,856	)		(2,077	)		(1,605	)
				239,699			166,472			482,288			401,706
Earnings per share attributable to the owners of the parent during the period:
Weighted average number of ordinary shares (thousands)				1,180,537			1,180,537			1,180,537			1,180,537
Continuing operations
Basic and diluted earnings per share (U.S. dollars per share)				0.20			0.14			0.41			0.34
Basic and diluted earnings per ADS (U.S. dollars per ADS) (1)				0.41			0.29			0.82			0.68

(1) Each ADS equals two shares.

CONSOLIDATED CONDENSED INTERIM STATEMENT OF COMPREHENSIVE INCOME

(all amounts in thousands of U.S. dollars)	Three-month period ended June 30,						Six-month period ended June 30,
	2019			2018			2019			2018
	(Unaudited)						(Unaudited)
Income for the period		239,699			166,472			482,288			401,706
Items that may be subsequently reclassified to profit or loss:
Currency translation adjustment		14,506			(111,526	)		(4,573	)		(79,062	)
Change in value of cash flow hedges and instruments at fair value		(433	)		(12,417	)		1,780			(14,300	)
From participation in non consolidated companies:
- Currency translation adjustment		13,081			(33,459	)		9,351			(38,411	)
- Changes in the fair value of derivatives held as cash flow hedges and others		(160	)		(51	)		(197	)		(40	)
Income tax relating to components of other comprehensive income		(13	)		31			(36	)		52
		26,981			(157,422	)		6,325			(131,761	)
Items that will not be reclassified to profit or loss:
Remeasurements of post employment benefit obligations		(1,858	)		508			(1,867	)		508
Income tax on items that will not be reclassified		529			(36	)		532			(52	)
Remeasurements of post employment benefit obligations of non-consolidated companies		(171	)		(207	)		(220	)		(263	)
		(1,500	)		265			(1,555	)		193
Other comprehensive income (loss) for the period, net of tax		25,481			(157,157	)		4,770			(131,568	)
Total comprehensive income for the period		265,180			9,315			487,058			270,138
Attributable to:
Owners of the parent		266,916			11,504			489,165			271,934
Non-controlling interests		(1,736	)		(2,189	)		(2,107	)		(1,796	)
		265,180			9,315			487,058			270,138

The accompanying notes are an integral part of these Consolidated Condensed Interim Financial Statements. These Consolidated Condensed Interim Financial Statements should be read in conjunction with our audited Consolidated Financial Statements and notes for the fiscal year ended December 31, 2018.

Tenaris S.A. Half-year report 2019-Interim management report

CONSOLIDATED CONDENSED INTERIM STATEMENT OF FINANCIAL POSITION

(all amounts in thousands of U.S. dollars)			At June 30, 2019			At December 31, 2018
	Notes		(Unaudited)
ASSETS
Non-current assets
Property, plant and equipment, net		8		6,173,577			6,063,908
Intangible assets, net		9		1,575,561			1,465,965
Right-of-use assets, net		10		230,084			-
Investments in non-consolidated companies		14		862,905			805,568
Other investments		11		26,941			118,155
Deferred tax assets				205,806			181,606
Receivables, net				156,173	9,231,047		151,905	8,787,107
Current assets
Inventories, net				2,432,657			2,524,341
Receivables and prepayments, net				133,878			155,885
Current tax assets				125,412			121,332
Trade receivables, net				1,481,076			1,737,366
Derivative financial instruments		12		16,696			9,173
Other investments		11		360,694			487,734
Cash and cash equivalents		11		1,201,987	5,752,400		428,361	5,464,192
Total assets					14,983,447			14,251,299
EQUITY
Capital and reserves attributable to owners of the parent					11,941,498			11,782,882
Non-controlling interests					208,698			92,610
Total equity					12,150,196			11,875,492
LIABILITIES
Non-current liabilities
Borrowings				49,375			29,187
Lease liabilities		10		193,057			-
Deferred tax liabilities				355,302			379,039
Other liabilities				240,749			213,129
Provisions				37,828	876,311		36,089	657,444
Current liabilities
Borrowings				844,926			509,820
Lease liabilities		10		34,431			-
Derivative financial instruments		12		1,960			11,978
Current tax liabilities				121,101			250,233
Other liabilities				241,704			165,693
Provisions				32,023			24,283
Customer advances				44,075			62,683
Trade payables				636,720	1,956,940		693,673	1,718,363
Total liabilities					2,833,251			2,375,807
Total equity and liabilities					14,983,447			14,251,299

Tenaris S.A. Half-year report 2019-Interim management report

CONSOLIDATED CONDENSED INTERIM STATEMENT OF CHANGES IN EQUITY

	Attributable to owners of the parent
	Share Capital (1)		Legal Reserves		Share Premium		Currency Translation Adjustment			Other Reserves (2)			Retained Earnings (3)			Total			Non- controlling interests			Total
																						(Unaudited)
Balance at December 31, 2018		1,180,537		118,054		609,733		(919,248	)		(322,310	)		11,116,116			11,782,882			92,610			11,875,492
Income (loss) for the period		-		-		-		-			-			484,365			484,365			(2,077	)		482,288
Currency translation adjustment		-		-		-		(4,543	)		-			-			(4,543	)		(30	)		(4,573	)
Remeasurements of post employment benefit obligations, net of taxes		-		-		-		-			(1,335	)		-			(1,335	)		-			(1,335	)
Change in value of instruments at fair value through other comprehensive income and cash flow hedges, net of taxes		-		-		-		-			1,744			-			1,744			-			1,744
From other comprehensive income of non-consolidated companies		-		-		-		9,351			(417	)		-			8,934			-			8,934
Other comprehensive income (loss) for the period		-		-		-		4,808			(8	)		-			4,800			(30	)		4,770
Total comprehensive income (loss) for the period		-		-		-		4,808			(8	)		484,365			489,165			(2,107	)		487,058
Changes in non-controlling interests (*)		-		-		-		-			1			-			1			118,802			118,803
Dividends approved		-		-		-		-			-			(330,550	)		(330,550	)		(607	)		(331,157	)
Balance at June 30, 2019		1,180,537		118,054		609,733		(914,440	)		(322,317	)		11,269,931			11,941,498			208,698			12,150,196

	Attributable to owners of the parent
	Share Capital (1)		Legal Reserves		Share Premium		Currency Translation Adjustment			Other Reserves (2)			Retained Earnings (3)			Total			Non- controlling interests			Total
																						(Unaudited)
Balance at December 31, 2017		1,180,537		118,054		609,733		(824,423	)		(320,569	)		10,718,853			11,482,185			98,785			11,580,970
Changes in accounting policies		-		-		-		-			2,786			5,220			8,006			12			8,018
Balance at December 31, 2017		1,180,537		118,054		609,733		(824,423	)		(317,783	)		10,724,073			11,490,191			98,797			11,588,988
Income (loss) for the period		-		-		-		-			-			403,311			403,311			(1,605	)		401,706
Currency translation adjustment		-		-		-		(78,891	)		-			-			(78,891	)		(171	)		(79,062	)
Remeasurements of post employment benefit obligations, net of taxes		-		-		-		-			482			-			482			(26	)		456
Change in value of instruments at fair value through other comprehensive income and cash flow hedges, net of taxes		-		-		-		-			(14,254	)		-			(14,254	)		6			(14,248	)
From other comprehensive income of non-consolidated companies		-		-		-		(38,411	)		(303	)		-			(38,714	)		-			(38,714	)
Other comprehensive loss for the period		-		-		-		(117,302	)		(14,075	)		-			(131,377	)		(191	)		(131,568	)
Total comprehensive income (loss) for the period		-		-		-		(117,302	)		(14,075	)		403,311			271,934			(1,796	)		270,138
Changes in non-controlling interests		-		-		-		-			-			-			-			(1	)		(1	)
Dividends approved		-		-		-		-			-			(330,550	)		(330,550	)		(1,861	)		(332,411	)
Balance at June 30, 2018		1,180,537		118,054		609,733		(941,725	)		(331,858	)		10,796,834			11,431,575			95,139			11,526,714

(1) The Company has an authorized share capital of a single class of 2.5 billion shares having a nominal value of USD1.00 per share. As of June 30, 2019 and 2018 there were 1,180,536,830 shares issued. All issued shares are fully paid.

(2) Other reserves include mainly the result of transactions with non-controlling interest that do not result in a loss of control, the remeasurement of post-employment benefit obligations and the changes in value of cash flow hedges and in financial instruments measured at fair value through other comprehensive income.

(3) The Distributable Reserve and Retained Earnings as of June 30, 2019 calculated in accordance with Luxembourg Law are disclosed in Note 13.

(*) Related to Saudi Steel Pipe Company acquisition, see Note 17.

Tenaris S.A. Half-year report 2019-Interim management report

CONSOLIDATED CONDENSED INTERIM STATEMENT OF CASH FLOWS

(all amounts in thousands of U.S. dollars)				Six-month period ended June 30,
	Notes			2019			2018
Cash flows from operating activities				(Unaudited)

Income for the period					482,288			401,706
Adjustments for:
Depreciation and amortization		8, 9 & 10			266,555			282,203
Income tax accruals less payments					(154,419	)		67,851
Equity in earnings of non-consolidated companies					(55,424	)		(86,946	)
Interest accruals less payments, net					(295	)		6,775
Changes in provisions					974			(5,621	)
Changes in working capital					346,045			(357,655	)
Currency translation adjustment and others					4,193			13,362
Net cash provided by operating activities					889,917			321,675

Cash flows from investing activities
Capital expenditures		8 & 9			(183,064	)		(195,731	)
Changes in advance to suppliers of property, plant and equipment					2,036			4,218
Acquisition of subsidiaries, net of cash acquired		17			(132,845	)		-
Loan to non-consolidated companies		14			-			(3,520	)
Repayment of loan by non-consolidated companies		14			40,470			5,470
Proceeds from disposal of property, plant and equipment and intangible assets					736			2,708
Dividends received from non-consolidated companies					28,974			25,722
Changes in investments in securities		11			229,906			396,078
Net cash (used in) provided by investing activities					(13,787	)		234,945

Cash flows from financing activities
Dividends paid					(330,550	)		(330,550	)
Dividends paid to non-controlling interest in subsidiaries					(672	)		(1,108	)
Changes in non-controlling interests					1			(1	)
Payments of lease liabilities		10			(19,447	)		-
Proceeds from borrowings					644,716			576,007
Repayments of borrowings					(413,094	)		(696,852	)
Net cash (used in) financing activities					(119,046	)		(452,504	)

Increase in cash and cash equivalents					757,084			104,116
Movement in cash and cash equivalents
At the beginning of the period					426,717			330,090
Effect of exchange rate changes					(784	)		(6,950	)
Increase in cash and cash equivalents					757,084			104,116
At June 30,					1,183,017			427,256

			At June 30,
Cash and cash equivalents					2019			2018
Cash and bank deposits					1,201,987			427,960
Bank overdrafts					(18,970	)		(704	)
					1,183,017			427,256

Tenaris S.A. Half-year report 2019-Interim management report

NOTES TO THE CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS

1	General information
2	Accounting policies and basis of presentation
3	Segment information
4	Cost of sales
5	Selling, general and administrative expenses
6	Financial results
7	Dividend distribution
8	Property, plant and equipment, net
9	Intangible assets, net
10	Right-of-use assets, net and lease liabilities
11	Cash and cash equivalents and other investments
12	Derivative financial instruments
13	Contingencies, commitments and restrictions to the distribution of profits
14	Investments in non-consolidated companies
15	Nationalization of Venezuelan Subsidiaries
16	Agreement for acquisition and other business agreements
17	Business combinations
18	Related party transactions
19	Category of financial instruments and classification within the fair value hierarchy
20	Subsequent event

Tenaris S.A. Half-year report 2019-Interim management report

NOTES TO THE CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS

(In the notes all amounts are shown in U.S. dollars, unless otherwise stated)

General information

Tenaris S.A. (the "Company") was established as a public limited liability company (société anonyme) under the laws of the Grand-Duchy of Luxembourg on December 17, 2001. The Company holds, either directly or indirectly, controlling interests in various subsidiaries in the steel pipe manufacturing and distribution businesses. References in these Consolidated Condensed Interim Financial Statements to "Tenaris" refer to Tenaris S.A. and its consolidated subsidiaries. A list of the principal Company’s subsidiaries is included in Note 29 to the Company’s audited Consolidated Financial Statements for the year ended December 31, 2018.

The Company’s shares trade on the Buenos Aires Stock Exchange, the Italian Stock Exchange and the Mexican Stock Exchange; the Company’s American Depositary Securities (“ADS”) trade on the New York Stock Exchange.

These Consolidated Condensed Interim Financial Statements were approved for issuance by the Company’s Board of Directors on July 31, 2019.

Accounting policies and basis of presentation

These Consolidated Condensed Interim Financial Statements have been prepared in accordance with IAS 34, “Interim Financial Reporting”. The accounting policies used in the preparation of these Consolidated Condensed Interim Financial Statements are consistent with those used in the audited Consolidated Financial Statements for the year ended December 31, 2018 except for the adoption of new and amended standards as set out below. These Consolidated Condensed Interim Financial Statements should be read in conjunction with the audited Consolidated Financial Statements for the year ended December 31, 2018, which have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standard Board (“IASB”) and in conformity with IFRS as adopted by the European Union (“EU”).

The preparation of Consolidated Condensed Interim Financial Statements requires management to make certain accounting estimates and assumptions that might affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the balance sheet dates, and the reported amounts of revenues and expenses for the reported periods. Actual results may differ from these estimates.

Material inter-company transactions, balances and unrealized gains (losses) on transactions between Tenaris’s subsidiaries have been eliminated in consolidation. However, since the functional currency of some subsidiaries is its respective local currency, some financial gains (losses) arising from inter-company transactions are generated. These are included in the Consolidated Condensed Interim Income Statement under Other financial results.

There were no significant changes in valuation techniques during the period and there have been no changes in any risk management policies since the year ended December 31, 2018.

Whenever necessary, certain comparative amounts have been reclassified to conform to changes in presentation in the current period.

Accounting pronouncements applicable as from January 1, 2019 and relevant for Tenaris

IFRS 16, “Leases”

Tenaris has adopted IFRS 16 “Leases” from 1 January 2019. In accordance with the transition provisions in IFRS 16, Tenaris has adopted the new rules using the modified retrospective approach, meaning that reclassifications of the adoption was recognized in the opening balance sheet as of January 1, 2019 and that comparatives were not restated.

Upon adoption of IFRS 16, Tenaris recognized lease liabilities in relation to leases which had previously been classified as ‘operating leases’ under the principles of IAS 17 “Leases”. These liabilities were measured at the present value of the remaining lease payments, discounted using the lessee’s incremental borrowing rate as of 1 January 2019. The associated right-of-use assets were measured at the amount equal to the lease liability, adjusted by the amount of any prepaid or accrued lease payments relating to that lease recognized in the balance sheet as of December 31, 2018. The difference between the amount of the lease liability recognized in the statement of financial position at the date of initial application and the operating lease commitments under IAS 17 is related to leases with a duration lower than 12 months, low value leases and/or leases with clauses related to variable payments.

Tenaris S.A. Half-year report 2019-Interim management report

Accounting policies and basis of presentation (Cont.)

Accounting pronouncements applicable as from January 1, 2019 and relevant for Tenaris (Cont.)

IFRS 16, “Leases” (Cont.)

Leases are recognized as a right-of-use asset and a corresponding liability at the date at which the leased asset is available for use by the group. Each lease payment is allocated between the liability and finance cost. The finance cost is charged to profit or loss over the lease period so as to produce a constant periodic rate of interest on the remaining balance of the liability for each period. The right-of-use asset is depreciated over the shorter of the asset's useful life and the lease term on a straight-line basis.

Lease liabilities include the net present value of i) fixed payments, less any lease incentives receivable, ii) variable lease payments that are based on an index or a rate, iii) amounts expected to be payable by the lessee under residual value guarantees, iv) the exercise price of a purchase option if the lessee is reasonably certain to exercise that option, and v) payments of penalties for terminating the lease, if the lease term reflects the lessee exercising that option.

The lease payments are discounted using the interest rate implicit in the lease. If that rate cannot be determined, the lessee’s incremental borrowing rate is used, being the rate that the lessee would have to pay to borrow the funds necessary to obtain an asset of similar value in a similar economic environment with similar terms and conditions.

Right-of-use assets are measured at cost comprising the amount of the initial measurement of lease liability, any lease payments made at or before the commencement date less any lease incentives received and any initial direct costs incurred by the lessee.

Payments associated with short-term leases and leases of low-value assets are recognized on a straight-line basis as an expenses in profit or loss. Short-term leases are leases with a lease term of 12 months or less. Low-value comprise mainly IT equipment and small items of office furniture.

In determining the lease term, management considers all facts and circumstances that create an economic incentive to exercise an extension option, or not exercise a termination option. Extension options (or periods after termination options) are only included in the lease term if the lease is reasonably certain to be extended (or not terminated).

None of the accounting pronouncements issued after December 31, 2018 and as of the date of these Consolidated Condensed Interim Financial Statements has a material effect on the Company’s financial condition or result of operations.

Tenaris S.A. Half-year report 2019-Interim management report

3	Segment information

Reportable operating segment

(All amounts in millions of U.S. dollars)

Six-month period ended June 30, 2019	Tubes			Other		Total
IFRS - Net Sales		3,578			212		3,790
Management view - operating income		476			36		512
Difference in cost of sales		(27	)		2		(25	)
Differences in depreciation and amortization		2			-		2
Differences in selling, general and administrative expenses		(2	)		1		(1	)
Differences in other operating income (expenses), net		6			-		6
IFRS - operating income		455			39		494
Financial income (expense), net							18
Income before equity in earnings of non-consolidated companies and income tax							512
Equity in earnings of non-consolidated companies							55
Income before income tax							567
Capital expenditures		177			6		183
Depreciation and amortization		258			9		267

Six-month period ended June 30, 2018	Tubes			Other		Total
IFRS - Net Sales		3,452			203		3,655
Management view - operating income		290			35		325
Difference in cost of sales		103			3		106
Differences in depreciation and amortization		(2	)		-		(2	)
Differences in selling, general and administrative expenses		-			6		6
IFRS - operating income		391			44		435
Financial income (expense), net							31
Income before equity in earnings of non-consolidated companies and income tax							466
Equity in earnings of non-consolidated companies							87
Income before income tax							553
Capital expenditures		194			2		196
Depreciation and amortization		274			8		282

In the six-month period ended June 30, 2019 and 2018, transactions between segments, which were eliminated in consolidation, are mainly related to sales of scrap, energy, surplus raw materials and others from the Other segment to the Tubes segment for $14 million and $26 million respectively. In addition to the amounts reconciled above, the main differences in net income arise from the impact of functional currencies on financial result, deferred income taxes as well as the result of investment in non-consolidated companies and changes on the valuation of inventories according to cost estimation internally defined.

Geographical information

(all amounts in thousands of U.S. dollars)	North America		South America		Europe		Middle East & Africa		Asia Pacific		Total
Six-month period ended June 30, 2019
Net sales		1,822,159		740,633		401,451		636,016		189,465		3,789,724
Capital expenditures		94,560		62,353		20,392		2,474		3,285		183,064
Depreciation and amortization		136,171		52,998		40,790		20,229		16,367		266,555

Six-month period ended June 30, 2018
Net sales		1,690,341		679,178		380,838		763,002		141,360		3,654,719
Capital expenditures		110,708		40,049		41,613		808		2,553		195,731
Depreciation and amortization		166,903		55,277		44,077		5,217		10,729		282,203

Allocation of net sales to geographical information is based on customer location. Allocation of depreciation and amortization is based on the geographical location of the underlying assets.

There are no revenues from external customers attributable to the Company’s country of incorporation (Luxembourg). For geographical information purposes, “North America” comprises Canada, Mexico and the USA; “South America” comprises principally Argentina, Brazil and Colombia; “Europe” comprises principally Italy, Romania and the United Kingdom; “Middle East and Africa” comprises principally Saudi Arabia, Kazakhstan, Nigeria and United Arab Emirates and “Asia Pacific” comprises principally China, Japan, Indonesia and Thailand.

Revenue is mainly recognized at a point in time to direct customers, when control has been transferred and there is no unfulfilled performance obligation that could affect the acceptance of the product by the customer.

Tenaris S.A. Half-year report 2019-Interim management report

4	Cost of sales

	Six-month period ended June 30,
(all amounts in thousands of U.S. dollars)	2019			2018
	(Unaudited)
Inventories at the beginning of the period		2,524,341			2,368,304
Increase in inventories due to business combinations		56,996			-
Plus: Charges of the period
Raw materials, energy, consumables and other		1,401,675			1,686,567
Services and fees		122,006			143,862
Labor cost		440,099			439,051
Depreciation of property, plant and equipment		212,991			217,179
Amortization of intangible assets		2,895			4,770
Depreciation of right-of-use assets		14,328			-
Maintenance expenses		129,112			100,810
Allowance for obsolescence		15,313			14,921
Taxes		73,281			16,497
Other		54,238			70,174
		2,522,934			2,693,831
Less: Inventories at the end of the period		(2,432,657	)		(2,530,072	)
		2,614,618			2,532,063

5	Selling, general and administrative expenses

	Six-month period ended June 30,
(all amounts in thousands of U.S. dollars)	2019			2018
	(Unaudited)
Services and fees		77,968			64,458
Labor cost		242,001			239,563
Depreciation of property, plant and equipment		8,966			8,430
Amortization of intangible assets		20,481			51,824
Depreciation of right-of-use assets		6,894			-
Commissions, freight and other selling expenses		234,033			236,131
Provisions for contingencies		15,357			9,395
Allowances for doubtful accounts		(22,074	)		(6,661	)
Taxes		52,569			33,568
Other		47,779			50,500
		683,974			687,208

6	Financial results

(all amounts in thousands of U.S. dollars)	Six-month period ended June 30,
	2019			2018
	(Unaudited)
Interest Income		23,224			21,208
Net result on changes in FV of financial assets at FVTPL		(27	)		(2,226	)
Finance Income (*)		23,197			18,982
Finance Cost		(18,269	)		(20,596	)
Net foreign exchange transactions results (**)		17,555			28,070
Foreign exchange derivatives contracts results		(4,120	)		4,891
Other		(105	)		(644	)
Other Financial results		13,330			32,317
Net Financial results		18,258			30,703

(*) The six-month period ended June 2019 includes $3.8 million of interest related to instruments carried at FVTPL.

(**) The six-month period ended June 2019 and 2018 mainly includes the positive result from the Argentine peso depreciation against the U.S. dollar on Peso denominated liabilities at Argentine subsidiaries which functional currency is the U.S. dollar. The six-month period ended June 2018 also includes the positive impact from Euro depreciation against the U.S. dollar on Euro denominated intercompany liabilities in subsidiaries with functional currency U.S. Dollar, largely offset by an increase in currency translation adjustment reserve from an Italian subsidiary.

Tenaris S.A. Half-year report 2019-Interim management report

7	Dividend distribution

On May 6, 2019, the Company’s Shareholders approved an annual dividend in the amount of $0.41 per share ($0.82 per ADS). The amount approved included the interim dividend previously paid in November 21, 2018 in the amount of $0.13 per share ($0.26 per ADS). The balance, amounting to $0.28 per share ($0.56 per ADS), was paid on May 22, 2019. In the aggregate, the interim dividend paid in November 2018 and the balance paid in May 2019 amounted to approximately $484 million.

On May 2, 2018, the Company’s Shareholders approved an annual dividend in the amount of $0.41 per share ($0.82 per ADS). The amount approved included the interim dividend previously paid in November 22, 2017 in the amount of $0.13 per share ($0.26 per ADS). The balance, amounting to $0.28 per share ($0.56 per ADS), was paid on May 23, 2018. In the aggregate, the interim dividend paid in November 2017 and the balance paid in May 2018 amounted to approximately $484 million.

8	Property, plant and equipment, net

(all amounts in thousands of U.S. dollars)	2019			2018
	(Unaudited)
Six-month period ended June 30,
Opening net book amount		6,063,908			6,229,143
Increase due to business combinations		178,739			-
Currency translation adjustment		(1,774	)		(42,303	)
Additions		164,112			177,583
Disposals		(4,483	)		(1,908	)
Transfers		(4,968	)		2,939
Depreciation charge		(221,957	)		(225,609	)
At June 30,		6,173,577			6,139,845

9	Intangible assets, net

(all amounts in thousands of U.S. dollars)	2019			2018
	(Unaudited)
Six-month period ended June 30,
Opening net book amount		1,465,965			1,660,859
Increase due to business combinations		114,101			-
Currency translation adjustment		201			(4,631	)
Additions		18,952			18,148
Disposals		(650	)		(800	)
Transfers		368			(2,939	)
Amortization charge		(23,376	)		(56,594	)
At June 30,		1,575,561			1,614,043

10	Right-of-use assets, net and lease liabilities

Right-of-use assets evolution

(all amounts in thousands of U.S. dollars)	2019
		(Unaudited)
Six-month period ended June 30,
Opening net book amount		238,400
Increase due to business combinations		2,267
Currency translation adjustment		188
Additions		10,451
Depreciation charge		(21,222	)
At June 30,		230,084

Tenaris is a party to lease contracts which mainly consist in land where our facilities are located, as well as yards used for the storage of material. These leases represent more than 75% of right-of-use assets. The remaining assets are mainly related to office spaces and equipments.

Depreciation of right-of-use assets was mainly included in Tubes segment.

Tenaris S.A. Half-year report 2019-Interim management report

10	Right-of-use assets, net and lease liabilities (Cont.)

The initial cost of right-of-use assets consists of the initial lease liability plus lease payments made in 2018 of approximately $4 million.

Lease liabilities evolution

(all amounts in thousands of U.S. dollars)	2019
		(Unaudited)
Six-month period ended June 30,
Opening net book amount		234,149
Increase due to business combinations		2,267
Translation differences		4,691
Additions		5,735
Repayments		(20,872	)
Interest accrued		1,518
At June 30, (*)		227,488

(*) The weighted average lessee’s incremental borrowing rate applied to the lease liabilities on 1 January 2019 was 2.4%.

The amount of remaining payments with maturity less than 1 year, between 2 and 5 years and more than 5 years is approximately 15%, 44% and 41% of the total remaining payments, respectively.

11	Cash and cash equivalents and other investments

(all amounts in thousands of U.S. dollars)	At June 30,		At December 31,
	2019		2018
Cash and cash equivalents		(Unaudited)
Cash at banks		127,993		81,211
Liquidity funds		167,700		160,198
Short – term investments		906,294		186,952
		1,201,987		428,361

Other investments - current
Bonds and other fixed Income		187,767		187,324
Fixed Income (time-deposit, zero coupon bonds, commercial papers)		172,103		300,410
Others		824		-
		360,694		487,734
Other investments - non-current
Bonds and other fixed Income		22,800		113,829
Others		4,141		4,326
		26,941		118,155

Derivative financial instruments

(all amounts in thousands of U.S. dollars)	At June 30,		At December 31,
	2019		2018
Assets		(Unaudited)
Derivatives hedging borrowings and investments		15,375		5,604
Other Derivatives (*)		1,321		3,621
		16,696		9,225
Liabilities
Derivatives hedging borrowings and investments		324		11,667
Other Derivatives		1,636		311
		1,960		11,978

(*) At December 31, 2018 includes $52 thousand of non-current derivatives.

Tenaris S.A. Half-year report 2019-Interim management report

13	Contingencies, commitments and restrictions to the distribution of profits

Contingencies

Tenaris is from time to time subject to various claims, lawsuits and other legal proceedings, including customer claims, in which third parties are seeking payment for alleged damages, reimbursement for losses, or indemnity. Management with the assistance of legal counsel periodically reviews the status of each significant matter and assesses potential financial exposure.

Some of these claims, lawsuits and other legal proceedings involve highly complex issues, and often these issues are subject to substantial uncertainties and, therefore, the probability of loss and an estimation of damages are difficult to ascertain. Accordingly, with respect to a large portion of such claims, lawsuits and other legal proceedings, Tenaris is unable to make a reliable estimate of the expected financial effect that will result from ultimate resolution of the proceeding. In those cases, Tenaris has not accrued a provision for the potential outcome of these cases.

If a potential loss from a claim, lawsuit or other proceeding is considered probable and the amount can be reasonably estimated, a provision is recorded. Accruals for loss contingencies reflect a reasonable estimate of the losses to be incurred based on information available to management as of the date of preparation of the financial statements and take into consideration litigation and settlement strategies. In a limited number of ongoing cases, Tenaris was able to make a reliable estimate of the expected loss or range of probable loss and has accrued a provision for such loss but believes that publication of this information on a case-by-case basis would seriously prejudice Tenaris’s position in the ongoing legal proceedings or in any related settlement discussions. Accordingly, in these cases, the Company has disclosed information with respect to the nature of the contingency but has not disclosed its estimate of the range of potential loss.

The Company believes that the aggregate provisions recorded for potential losses in these Consolidated Condensed Interim Financial Statements are adequate based upon currently available information. However, if management’s estimates prove incorrect, current reserves could be inadequate and Tenaris could incur a charge to earnings which could have a material adverse effect on Tenaris’s results of operations, financial condition, net worth and cash flows.

Below is a summary description of Tenaris’s material legal proceedings which are outstanding as of the date of these Consolidated Condensed Interim Financial Statements. In addition, Tenaris is subject to other legal proceedings, none of which is believed to be material.

CSN claims relating to the January 2012 acquisition of Usiminas shares

Confab Industrial S.A. (“Confab”), a Brazilian subsidiary of the Company, is one of the defendants in a lawsuit filed in Brazil by Companhia Siderúrgica Nacional (CSN) and various entities affiliated with CSN against Confab and several Ternium subsidiaries that acquired a participation in Usiminas’ control group in January 2012.

The CSN lawsuit alleges that, under applicable Brazilian laws and rules, the acquirers were required to launch a tag-along tender offer to all non-controlling holders of Usiminas’ ordinary shares for a price per share equal to 80% of the price per share paid in such acquisition, or BRL28.8, and seeks an order to compel the acquirers to launch an offer at that price plus interest. If so ordered, the offer would need to be made to 182,609,851 ordinary shares of Usiminas not belonging to Usiminas’ control group, and Confab would have a 17.9% share in that offer.

On September 23, 2013, the first instance court dismissed the CSN lawsuit, and on February 8, 2017, the court of appeals maintained the understanding of the first instance court. On March 6, 2017, CSN filed a motion for clarification against the decision of the Court of Appeals of São Paulo, which was rejected on July 19, 2017. On August 18, 2017, CSN filed an appeal to the Superior Court of Justice seeking the review and reversal of the decision issued by the Court of Appeals. On March 5, 2018, the court of appeals ruled that CSN’s appeal did not meet the requirements for submission to the Superior Court of Justice and rejected the appeal. On May 8, 2018, CSN appealed against such ruling and on January 22, 2019, the court of appeals rejected it and ordered that the case be submitted to the Superior Court of Justice. The Superior Court of Justice will review admissibility of CSN’s appeal, and, if declares it admissible, will then render a decision on the merits. The Superior Court of Justice is restricted to the analysis of alleged violations to federal laws and cannot assess matters of fact.

Tenaris continues to believe that all of CSN’s claims and allegations are groundless and without merit, as confirmed by several opinions of Brazilian legal counsel, two decisions issued by the Brazilian securities regulator (CVM) in February 2012 and December 2016, and the first and second instance court decisions referred to above.

Tenaris S.A. Half-year report 2019-Interim management report

13	Contingencies, commitments and restrictions to the distribution of profits (Cont.)

Contingencies (Cont.)

Veracel celulose accident litigation

On September 21, 2007, an accident occurred in the premises of Veracel Celulose S.A. (“Veracel”) in connection with a rupture in one of the tanks used in an evaporation system manufactured by Confab. The Veracel accident allegedly resulted in material damages to Veracel. Itaú Seguros S.A. (“Itaú”), Veracel’s insurer at the time of the Veracel accident and then replaced by Chubb Seguros Brasil S/A (“Chubb”), initiated a lawsuit against Confab seeking reimbursement of damages paid to Veracel in connection with the Veracel accident. Veracel initiated a second lawsuit against Confab seeking reimbursement of the amount paid as insurance deductible with respect to the Veracel accident and other amounts not covered by insurance. Itaú and Veracel claimed that the Veracel accident was caused by failures and defects attributable to the evaporation system manufactured by Confab. Confab believes that the Veracel accident was caused by the improper handling by Veracel’s personnel of the equipment supplied by Confab in violation of Confab’s instructions. The two lawsuits were consolidated and are considered by the 6th Civil Court of São Caetano do Sul; however, each lawsuit will be adjudicated separately.

On September 28, 2018 Confab and Chubb, entered into a settlement agreement pursuant to which on October 9, 2018, Confab paid an amount of approximately $3.5 million to Chubb, without assuming any liability for the accident or the claim.

On October 10, 2018, Confab was notified that the court had issued rulings for both lawsuits. Both decisions were unfavorable to Confab:

With respect to Chubb’s claim, Confab was ordered to pay an amount of approximately BRL89.8 million (approximately $23.4 million) (including interest, fees and expenses). On October 15, 2018, Confab filed a request for homologation of the settlement agreement mentioned above, as such settlement agreement remains valid and binding between the parties. On November 8, 2018, the settlement agreement was homologated by the court.

With respect to Veracel’s claim, Confab was ordered to pay the insurance deductible and other concepts not covered by insurance, currently estimated to amount to BRL60.9 million (approximately $15.9 million) (including interest, fees and expenses). Both parties filed motions for clarification against the court’s decision, which were partially granted. Although the contract between Confab and Veracel expressly provided that Confab would not be liable for damages arising from lost profits, the court award would appear to include BRL52.2 million (approximately $13.6 million) of damages arising therefrom; Confab has additional defense arguments in respect of a claim for lost profits. On December 18, 2018, Confab filed an appeal against the first instance court decision, and on April 30, 2019, Veracel filed its response to the appeal. At this stage the Company cannot predict the outcome of the claim or the amount or range of loss in case of an unfavorable outcome.

§ Ongoing investigation

The Company is aware that Italian and Swiss authorities have been investigating whether certain payments were made from accounts of entities presumably associated with affiliates of the Company to accounts controlled by an individual allegedly related with an officer of Petróleo Brasileiro S.A. and whether any such payments were intended to benefit the Company’s Brazilian subsidiary Confab. Any such payments could violate certain applicable laws, including the U.S. Foreign Corrupt Practices Act.

The Company had previously reviewed certain of these matters in connection with an investigation by the Brazilian authorities related to “Operation Lava Jato” and the Audit Committee of the Company’s Board of Directors engaged external counsel in connection with a review of the alleged payments and related matters. In addition, the Company voluntarily notified the U.S Securities and Exchange Commission and the U.S. Department of Justice in October 2016. In July 2019, the Company learned that the public prosecutor office of Milan, Italy, has completed a preliminary investigation into the alleged payments and has included in the investigation, among other persons, the Company’s Chairman and CEO, two other board members, Gianfelice Rocca and Roberto Bonatti, and the Company’s controlling shareholder, San Faustin. No determination has been made by the Italian judiciary as to whether to move the case to trial or have it dismissed.

The Company continues to review these matters and to respond to requests from and otherwise cooperate with the appropriate authorities. At this time, the Company cannot predict the outcome of these matters or estimate the range of potential loss or extent of risk, if any, to the Company's business that may result from resolution of these matters.

Tenaris S.A. Half-year report 2019-Interim management report

13	Contingencies, commitments and restrictions to the distribution of profits (Cont.)

Contingencies (Cont.)

Petroamazonas penalties

On January 22, 2016, Petroamazonas (“PAM”), an Ecuadorian state-owned oil company, imposed penalties to the Company’s Uruguayan subsidiary, Tenaris Global Services S.A. (“TGS”), for its alleged failure to comply with delivery terms under a pipe supply agreement. On June 27, 2018, TGS initiated arbitration proceedings against PAM before the Quito Chamber of Commerce Arbitration Center, seeking the annulment of the penalties. In September 2018, PAM filed its response to the arbitration claim. On May 16, 2019 the arbitration panel issued a favorable decision to TGS and decided that the penalties had been wrongfully imposed. The decision has now become final and TGS already collected the outstanding credits from PAM amounting to $22.5 million.

Contractor claim for additional costs

Tenaris Bay City Inc. (“Tenaris Bay City”), a U.S. subsidiary of the Company, received claims from a contractor for alleged additional costs in the construction of a project located in the Bay City area for an amount initially stated to be in excess of $90 million; however, subsequently the contractor amended the amount of the claim to $45 million plus attorneys’ fees and arbitration costs. On June 30, 2017, the contractor filed a demand for arbitration of these claims. On June 6, 2019, the arbitrators issued their final opinion, awarding $12.8 million to Brahma, inclusive of attorneys’ fees and interest. The parties agreed not to challenge the award and the Company paid the amount due on June 21, 2019.

Tax assessment in Mexico

In 2017, Tubos de Acero de México S.A (“Tamsa”) and Servicios Generales Tenaris Tamsa S.A (“Segeta”), two Mexican subsidiaries of the Company, were informed that the Mexican tax authorities had determined that the tax deductions associated with certain purchases of scrap made by the companies during 2013 failed to comply with applicable requirements and, accordingly, should be rejected. Tamsa and Segeta filed their respective responses and complaints against the determination and provided additional information evidencing compliance with applicable requirements for the challenged tax deductions. On August 30, 2018 and January 24, 2019, administrative decisions were issued in the proceedings against Segeta and Tamsa, respectively, determining a tax obligation in the amount of MXN1,540 million (approximately $80.4 million) for Segeta and MXN3,751 million (approximately $195.8 million) for Tamsa. On October 15, 2018 and March 8, 2019, Segeta and Tamsa filed revocation requests (recursos de revocación exclusivos) against the August 2018 decision as to Segeta, and the January 2019 decision as to Tamsa. On March 27, 2019, and July 1, 2019, respectively, Segeta and Tamsa were notified that the tax authorities had reversed and left without effects their former tax determinations and, accordingly both proceedings have been terminated.

Putative class actions

Following the Company’s November 27, 2018 announcement that its Chairman and CEO Paolo Rocca had been included in an Argentine court investigation known as the Notebooks Case, two putative class action complaints were filed in the U.S. District Court for the Eastern District of New York. On April 29, 2019, the court consolidated the complaints into a single case, captioned “In re Tenaris S.A. Securities Litigation”, and appointed lead plaintiffs and lead counsel. On July 19, 2019, the lead plaintiffs filed an amended complaint purportedly on behalf of purchasers of Tenaris securities during the putative class period of May 1, 2014 through December 5, 2018. The individual defendants named in the complaint are Tenaris’s Chairman and CEO and Tenaris’s CFO. The complaint alleges that during the class period, the Company and the individual defendants inflated the Tenaris share price by failing to disclose that sale proceeds received by Ternium (in which Tenaris held an 11.46% stake) when Sidor was expropriated by Venezuela were received or expedited as a result of allegedly improper payments made to Argentine officials. The complaint does not specify the damages that plaintiff is seeking. Management believes the Company has meritorious defenses to these claims; however, at this stage the Company cannot predict the outcome of the claim or the amount or range of loss in case of an unfavorable outcome.

Investigation concerning alleged price overcharges in Brazil

In 2018, two Brazilian subsidiaries of the Company were notified of formal charges arising from a review by the Tribunal de Contas da Uniao (TCU) for alleged price overcharges on goods supplied to Petróleo Brasileiro S.A- Petrobras under a supply contract. Both companies have already filed their defenses. The estimated amount of this claim is BRL29 million (approximately $7.6 million). Tenaris believes, based on the advice of counsel and external consultants, that the prices charged under the Petrobras contract do not result in overprices and that it is unlikely that the ultimate resolution of this matter will result in a material obligation.

Tenaris S.A. Half-year report 2019-Interim management report

13	Contingencies, commitments and restrictions to the distribution of profits (Cont.)

Contingencies (Cont.)

Administrative proceeding concerning Brazilian tax credits

Confab is a party to an administrative proceeding concerning the recognition and transfer of tax credits for an amount allegedly exceeding the amount that Confab would have been entitled to recognize and/or transfer. The proceeding resulted in the imposition of a fine against Confab representing approximately 75% of the allegedly undue credits, which was appealed by Confab. On January 21, 2019, Confab was notified of an administrative decision denying Confab’s appeal, thereby upholding the tax determination and the fine against Confab. On January 28, 2019, Confab challenged such administrative decision and is currently awaiting a resolution. In case of an unfavorable resolution, Confab may still appeal before the courts. The estimated amount of this claim is BRL56.4 million (approximately $14.7 million). At this stage, the Company cannot predict the outcome of this claim.

Commitments and guarantees

Set forth is a description of Tenaris’s main outstanding commitments:

A Tenaris company entered into a contract with Transportadora de Gas del Norte S.A. for the service of natural gas transportation to the facilities of Siderca, an Argentine subsidiary of Tenaris. As of June 30, 2019, the aggregate commitment to take or pay the committed volumes for a 9-year term totaled approximately $41.2 million.

Several Tenaris companies entered into a contract with Praxair S.A. for the service of oxygen and nitrogen supply. As of June 30, 2019, the aggregate commitment to take or pay the committed volumes for a 14-year term totalled approximately $57.7 million.

Several Tenaris companies entered into a contract with Graftech for the supply of graphite electrodes. As of June 30, 2019, the aggregate commitment to take or pay the committed volumes totalled approximately $48 million.

A Tenaris company entered into a 25-year contract (effective as of December 1, 2016, through December 1, 2041) with Techgen for the supply of 197 MW (which represents 22% of Techgen’s capacity). Monthly payments are determined on the basis of capacity charges, operation costs, back-up power charges, and transmission charges. As of the seventh contract year (as long as Techgen’s existing or replacing bank facility has been repaid in full), the Tenaris company has the right to suspend or early terminate the contract if the rate payable under the agreement is higher than the rate charged by the Comisión Federal de Electricidad (“CFE”) or its successors. The Tenaris company may instruct Techgen to sell to any affiliate, to CFE, or to any other third party all or any part of unused contracted energy under the agreement and the Tenaris company will benefit from the proceeds of such sale.

A Tenaris company entered into a contract with Vale International S.A. for the supply of iron ore, for which it is committed to purchase at least 70% of its annual iron ore needs, up to 770 thousand tons of pellets annually. The contract expires on December 31, 2020. The aggregate commitment amounts to approximately $107.4 million.

A Tenaris company entered into a contract with Canadian National Railway for the service of rail transportation from its raw material supplier to its Canadian production center. The total commitment ending June 30, 2020 is $20.9 million.

A Tenaris company entered into a contract with Air Liquide Mexico, S. de R.L de C.V. for the supply of argon gas. As of June 30, 2019, the aggregate commitment totalled approximately $20.7 million.

Additionally Tenaris has issued performance guarantees mainly related to long term commercial contracts with several customers and parent companies guarantees for approximately $2.4 billion.

Restrictions to the distribution of profits and payment of dividends

As of December 31, 2018, equity as defined under Luxembourg law and regulations consisted of:

(all amounts in thousands of U.S. dollars)
Share capital			1,180,537
Legal reserve			118,054
Share Premium			609,733
Retained earnings including net income for the year ended December 31, 2018			16,439,438
Total equity in accordance with Luxembourg law			18,347,762

Tenaris S.A. Half-year report 2019-Interim management report

13	Contingencies, commitments and restrictions to the distribution of profits (Cont.)

Restrictions to the distribution of profits and payment of dividends (Cont.)

At least 5% of the Company’s net income per year, as calculated in accordance with Luxembourg law and regulations, must be allocated to the creation of a legal reserve equivalent to 10% of the Company’s share capital. As of June 30, 2019, this reserve is fully allocated and additional allocations to the reserve are not required under Luxembourg law. Dividends may not be paid out of the legal reserve.

The Company may pay dividends to the extent, among other conditions, that it has distributable retained earnings calculated in accordance with Luxembourg law and regulations.

At December 31, 2018, distributable amount under Luxembourg law totals $17.0 billion, as detailed below:

(all amounts in thousands of U.S. dollars)
Retained earnings at December 31, 2017 under Luxembourg law	16,956,761
Other income and expenses for the year ended December 31, 2018	(33,303	)
Dividends approved	(484,020	)
Retained earnings at December 31, 2018 under Luxembourg law	16,439,438
Share premium	609,733
Distributable amount at December 31, 2018 under Luxembourg law	17,049,171

14	Investments in non-consolidated companies

This note supplements and should be read in conjunction with Note 11 to the Company’s audited Consolidated Financial Statements for the year ended December 31, 2018.

Ternium

Ternium S.A. (“Ternium”), is a steel producer with production facilities in Mexico, Argentina, Brazil, Colombia, United States and Guatemala and is one of Tenaris’s main suppliers of round steel bars and flat steel products for its pipes business.

At June 30, 2019, the closing price of Ternium’s ADSs as quoted on the New York Stock Exchange was $22.43 per ADS, giving Tenaris’s ownership stake a market value of approximately $515.2 million. At June 30, 2019, the carrying value of Tenaris’s ownership stake in Ternium, based on Ternium’s IFRS financial statements under IFRS, was approximately $753.3 million.

Usiminas

Usiminas is a Brazilian producer of high quality flat steel products used in the energy, automotive and other industries and Tenaris’s principal supplier of flat steel in Brazil for its pipes and industrial equipment businesses.

As of June 30, 2019, the closing price of the Usiminas’ ordinary and preferred shares, as quoted on the B3, was BRL10.5 ($2.74) and BRL8.94 ($2.33), respectively, giving Tenaris’s ownership stake a market value of approximately $103 million. As that date, the carrying value of Tenaris’s ownership stake in Usiminas was approximately $78.4 million.

Techgen, S.A. de C.V. (“Techgen”)

Techgen is a Mexican company that operates a natural gas-fired combined cycle electric power plant in the Pesquería area of the State of Nuevo León, Mexico. The company started producing energy on December 1, 2016 and is fully operational, with a power capacity of 900 megawatts. As of June 30, 2019, Tenaris held 22% of Techgen’s share capital, and its affiliates, Ternium and Tecpetrol International S.A. (a wholly-owned subsidiary of San Faustin S.A., the controlling shareholder of both Tenaris and Ternium), held 48% and 30% respectively.

Techgen is a party to transportation capacity agreements for a purchasing capacity of 150,000 MMBtu/Gas per day starting on August 1, 2016 and ending on July 31, 2036, and a party to a contract for the purchase of power generation equipment and other services related to the equipment. As of June 30, 2019, Tenaris’s exposure under these agreements amounted to $53.5 million and $1.8 million respectively. Furthermore, during 2018, Techgen entered a contract for the purchase of clean energy certificates. As of June 30, 2019 Tenaris’s exposure under this agreement amounted to $17.8 million.

During 2019, there were repayments of loans by the shareholders of Techgen; the part corresponding to Tenaris amounted to $40.5 million. As of June 30, 2019, the aggregate outstanding principal amount under these subordinated loans was $58.1 million.

On February 13, 2019, Techgen entered into a $640 million syndicated loan agreement with several banks to refinance an existing loan, resulting in the release of certain corporate guarantee issued by Techgen’s shareholders to secure the replaced facility.

Tenaris S.A. Half-year report 2019-Interim management report

14	Investments in non-consolidated companies

Techgen, S.A. de C.V. (“Techgen”)

Techgen’s obligations under the current facility, which is “non-recourse” on the sponsors, are guaranteed by a Mexican security trust covering Techgen’ shares, assets and accounts as well as Techgen’s affiliates rights under certain contracts. In addition, Techgen’s collection and payment accounts not subject to the trust have been pledged in favor of the lenders under the new loan agreement, and certain direct agreements –customary for these type of transactions– have been entered into with third parties and affiliates, including in connection with the agreements for the sale of energy produced by the project and the agreements for the provision of gas and long-term maintenance services to Techgen. The commercial terms and conditions governing the purchase, by the Company’s Mexican subsidiary Tamsa, of 22% of the energy generated by the project remain unchanged.

Under the loan agreement, Techgen is committed to maintain a debt service reserve account covering debt service becoming due during two consecutive quarters; such account is funded by stand-by letters of credit issued for the account of Techgen’s sponsors in proportion to their respective participations in Techgen. Accordingly, the Company and its Swiss subsidiary, Tenaris Investments Switzerland AG, applied for stand-by letters of credit covering 22% of the debt service coverage ratio, which as of the date hereof amounts to $9.8 million.

15	Nationalization of Venezuelan Subsidiaries

Following the nationalization by the Venezuelan government of the Company’s interests in its majority-owned subsidiaries TAVSA - Tubos de Acero de Venezuela S.A. (“Tavsa”) and Matesi Materiales Siderúrgicos S.A (“Matesi”) and in Complejo Siderúrgico de Guayana, C.A (“Comsigua”), the Company and its wholly-owned subsidiary Talta - Trading e Marketing Sociedad Unipessoal Lda (“Talta”) initiated arbitration proceedings against Venezuela before the ICSID in Washington D.C. in connection with these nationalizations and obtained favorable awards, which are final and not subject to further appeals. For further information on these cases, see Note 30 in the Company’s audited consolidated financial statements for the year ended December 31, 2018.

16	Agreement for acquisition and other business agreements

Agreement for acquisition of IPSCO Tubulars Inc.

On March 22, 2019, the company entered into a definitive agreement to acquire from PAO TMK, a Russian company and manufacturer of steel pipe, 100% of the shares of its wholly owned U.S. subsidiary IPSCO Tubulars Inc., for $1.209 million, on a cash-free, debt-free bases, which includes $270 million of working capital.

The transaction is subject to regulatory approvals, including approval by the U.S. antitrust authorities, and other customary conditions.

IPSCO Tubulars Inc. is a U.S. domestic producer of seamless and welded OCTG and line pipe products, with an annual production capacity of 450,000 metric tons of steel bars, 400,000 metric tons of seamless pipe and 1,000,000 metric tons of welded pipes, and production facilities spread throughout the country.

Agreement to build a welded pipe plant in West Siberia

On February 5, 2019 Tenaris entered into an agreement with PAO Severstal to build a welded pipe plant to produce OCTG products in the Surgut area, West Siberia, Russian Federation. Tenaris holds a 49% interest in the company, while PAO Severstal owns the remaining 51%. The regulatory approvals and other customary conditions have been already obtained. The plant, which is estimated to require an investment of $240 million and a two-year construction period, is planned to have an annual production capacity of 300,000 tons.

17	Business combinations

Acquisition of Saudi Steel Pipe Company

Acquisition

On January 21, 2019, Tenaris acquired 47.79% of the shares of Saudi Steel Pipe Company (“SSP”), a welded steel pipes producer listed on the Saudi stock market, for a total amount of SAR530 million (approximately $141 million). The amount was paid with Tenaris cash in hand. SSP’s facilities are located in the Eastern Province of the Kingdom of Saudi Arabia and have a manufacturing capacity of 360,000 tons per year. SSP started its operations in 1980 and serves energy industrial and commercial segments, is qualified to supply products with major national oil companies in the region.

Tenaris S.A. Half-year report 2019-Interim management report

17	Business combinations (Cont.)

Acquisition of Saudi Steel Pipe Company (Cont.)

Acquisition (Cont.)

Upon closing of the acquisition, four Tenaris’s nominees were appointed as new members of the SSP’s board of directors and a Tenaris senior executive was appointed as managing director and chief executive officer of SSP. Such appointment was ratified at the shareholders meeting of SSP held on May 7, 2019, where the shareholders also approved the reappointment of the Tenaris’s nominees until June 6, 2022.

The Company has begun consolidating SSP’s balances and results of operations as from January 21, 2019.

Fair value of net assets acquired

The application of the purchase method requires certain estimates and assumptions specially concerning the determination of the fair values of the acquired intangible assets and property, plant and equipment as well as the liabilities assumed at the date of the acquisition. The fair values determined at the acquisition date are based mainly on discounted cash flows and other valuation techniques.

The preliminary allocation of the fair values determined for the assets and liabilities arising from the acquisition is as follows:

Fair value of acquired assets and liabilities:	SAR million			$ million
Property, Plant and Equipment		671			178
Customer relationship		305			82
Investment in associated		77			21
Working capital		167			45
Cash and Cash Equivalents		32			9
Other Receivables		11			3
Borrowings		(304	)		(81	)
Employees end of service benefits		(59	)		(16	)
Deferred Tax Liabilities		(47	)		(13	)
Net assets acquired		853			228

Tenaris acquired 47.79% of total assets and liabilities shown above, approximately $109 million. As of the result of the acquisition, the Company recognized a Goodwill of approximately $32.5 million. Tenaris has chosen to recognize the non-controlling interest at the proportionate share of the acquiree’s net identifiable assets.

The acquired business contributed revenues for $86.8 million with a minor contribution to Tenaris’s margin for the period starting January 21, 2019 and ending June 30, 2019.

If the acquisition had occurred on 1 January 2019, consolidated revenue and profit after tax would have not changed significantly.

The preliminary purchase price allocation has been done with the assistance of a third party expert. Following IFRS 3 “Business Combinations”, the Company will continue reviewing the allocation and make any necessary adjustments (mainly over property, plant and equipment, intangible assets and provisions) during the twelve months following the acquisition date.

18	Related party transactions

As of June 30, 2019:

San Faustin S.A., a Luxembourg société anonyme (“San Faustin”), owned 713,605,187 shares in the Company, representing 60.45% of the Company’s capital and voting rights.

San Faustin owned all of its shares in the Company through its wholly-owned subsidiary Techint Holdings S.à r.l., a Luxembourg société à responsabilité limitée (“Techint”), who is the holder of record of the above-mentioned Tenaris shares.

Rocca & Partners Stichting Administratiekantoor Aandelen San Faustin, a Dutch private foundation (Stichting) (“RP STAK”) held voting shares in San Faustin sufficient to control San Faustin.

No person or group of persons controls RP STAK.

Tenaris S.A. Half-year report 2019-Interim management report

18	Related party transactions (Cont.)

Based on the information most recently available to the Company, Tenaris’s directors and senior management as a group owned 0.08% of the Company’s outstanding shares.

Transactions and balances disclosed as with “non-consolidated parties” are those with companies over which Tenaris exerts significant influence or joint control in accordance with IFRS, but does not have control. All other transactions and balances with related parties which are not non-consolidated parties and which are not consolidated are disclosed as “Other”.

The following transactions were carried out with related parties:

	(all amounts in thousands of U.S. dollars)	Six-month period ended June 30,
		2019		2018
(i)	Transactions	(Unaudited)
	(a) Sales of goods and services
	Sales of goods to non-consolidated parties		9,605		13,540
	Sales of goods to other related parties		43,969		65,453
	Sales of services to non-consolidated parties		2,831		3,886
	Sales of services to other related parties		2,134		3,214
			58,539		86,093
	(b) Purchases of goods and services
	Purchases of goods to non-consolidated parties		86,446		109,334
	Purchases of goods to other related parties		30,318		50,859
	Purchases of services to non-consolidated parties		3,293		5,039
	Purchases of services to other related parties		27,360		25,020
			147,417		190,252

	(all amounts in thousands of U.S. dollars)	At June 30,			At December 31,
		2019			2018
(ii)	Period-end balances	(Unaudited)
	(a) Arising from sales / purchases of goods / services / others
	Receivables from non-consolidated parties		79,846			122,136
	Receivables from other related parties		13,967			24,419
	Payables to non-consolidated parties		(31,461	)		(33,197	)
	Payables to other related parties		(10,510	)		(17,595	)
			51,842			95,763

	(b) Financial debt
	Borrowings from other related parties		(671	)		-
	Finance lease liabilities from other related parties		(2,204	)		-
			(2,875	)		-

19	Category of financial instruments and classification within the fair value hierarchy

The following table illustrates the three hierarchical levels for valuing financial instruments at fair value and those measured at amortized cost as of June 30, 2019 and December 31, 2018.

Tenaris S.A. Half-year report 2019-Interim management report

19	Category of financial instruments and classification within the fair value hierarchy (Cont.)

			Measurement Categories				At Fair Value
June 30, 2019	Carrying amount		Amortized Cost		Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents		1,201,987		1,034,287		167,700		167,700		-		-
Other investments		360,694		172,103		188,591		169,923		18,668		-
Fixed income (time-deposit, zero coupon bonds, commercial papers)		172,103		172,103		-		-		-		-
Certificates of deposits		86,174		86,174		-		-		-		-
Commercial papers		24,983		24,983		-		-		-		-
Other notes		60,946		60,946		-		-		-		-
Bonds and other fixed income		188,591		-		188,591		169,923		18,668		-
U.S. government securities		37,599		-		37,599		37,599		-		-
Non - U.S. government securities		3,003		-		3,003		3,003		-		-
Corporates securities		129,321		-		129,321		129,321		-		-
Structured notes		17,844		-		17,844		-		17,844		-
Others		824		-		824		-		824		-
Derivative financial instruments		16,696		-		16,696		-		16,696		-
Other Investments Non-current		26,941		-		26,941		22,800		-		4,141
Bonds and other fixed income		22,800		-		22,800		22,800		-		-
Other investments		4,141		-		4,141		-		-		4,141
Trade receivables		1,481,076		1,481,076		-		-		-		-
Receivables C and NC (*)		290,051		93,278		48,659		-		-		48,659
Other receivables		141,937		93,278		48,659		-		-		48,659
Other receivables (non-financial)		148,114		-		-		-		-		-
Total				2,780,744		448,587		360,423		35,364		52,800
Liabilities
Borrowings C and NC		894,301		894,301		-		-		-		-
Lease Liabilities C and NC		227,488		227,488		-		-		-		-
Trade payables		636,720		636,720		-		-		-		-
Derivative financial instruments		1,960		-		1,960		-		1,960		-
Total				1,758,509		1,960		-		1,960		-

(*) Includes balances related to interest in our Venezuelan companies, see Note 15.

			Measurement Categories				At Fair Value
December 31, 2018	Carrying amount		Amortized Cost		Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents		428,361		268,163		160,198		160,198		-		-
Other investments		487,734		300,410		187,324		168,165		19,159		-
Fixed income (time-deposit, zero coupon bonds, commercial papers)		300,410		300,410		-		-		-		-
Certificates of deposits		198,912		198,912		-		-		-		-
Commercial papers		9,932		9,932		-		-		-		-
Other notes		91,566		91,566		-		-		-		-
Bonds and other fixed income		187,324		-		187,324		168,165		19,159		-
U.S. government securities		1,077		-		1,077		1,077		-		-
Non - U.S. government securities		24,912		-		24,912		24,912		-		-
Corporates securities		142,176		-		142,176		142,176		-		-
Structured notes		19,159		-		19,159		-		19,159		-
Derivative financial instruments		9,173		-		9,173		-		9,173		-
Other Investments Non-current		118,155		-		118,155		113,830		-		4,326
Bonds and other fixed income		113,830		-		113,830		113,830		-		-
Other investments		4,326		-		4,326		-		-		4,326
Trade receivables		1,737,366		1,737,366		-		-		-		-
Receivables C and NC (*)		307,790		99,620		48,711		-		52		48,659
Other receivables		148,331		99,620		48,711		-		52		48,659
Other receivables (non-financial)		159,459		-		-		-		-		-
Total				2,405,559		523,561		442,193		28,384		52,985
Liabilities
Borrowings C and NC		539,007		539,007		-		-		-		-
Trade payables		693,673		693,673		-		-		-		-
Derivative financial instruments		11,978		-		11,978		-		11,978		-
Total				1,232,680		11,978		-		11,978		-

(*) Includes balances related to interest in our Venezuelan companies, see Note 15.

There were no transfers between Levels during the period.

The fair value of financial instruments traded in active markets is based on quoted market prices at the reporting date. A market is regarded as active if quoted prices are readily and regularly available from an exchange, dealer, broker, industry group, pricing service, or regulatory agency, and those prices represent actual and regularly occurring market transactions on an arm’s length basis. The quoted market price used for financial assets held by Tenaris is the current bid price. These instruments are included in Level 1 and comprise primarily corporate and sovereign debt securities.

The fair value of financial instruments that are not traded in an active market (such as certain debt securities, certificates of deposits with original maturity of more than three months, forward and interest rate derivative instruments) is determined by using valuation techniques which maximize the use of observable market data when available and rely as little as possible on entity specific estimates. If all significant inputs required to value an instrument are observable, the instrument is included in Level 2. Tenaris values its assets and liabilities included in this level using bid prices, interest rate curves, broker quotations, current exchange rates, forward rates and implied volatilities obtained from market contributors as of the valuation date.

Tenaris S.A. Half-year report 2019-Interim management report

19	Category of financial instruments and classification within the fair value hierarchy (Cont.)

The fair value of all outstanding derivatives is determined using specific pricing models that include inputs that are observable in the market or can be derived from or corroborated by observable data. The fair value of forward foreign exchange contracts is calculated as the net present value of the estimated future cash flows in each currency, based on observable yield curves, converted into U.S. dollars at the spot rate of the valuation date.

If one or more of the significant inputs are not based on observable market data, the instruments are included in Level 3. Tenaris values its assets and liabilities in this level using observable market inputs and management assumptions which reflect the Company’s best estimate on how market participants would price the asset or liability at measurement date. Main balances included in this level correspond to Tenaris’s interest in Venezuelan companies (see Note 15).

Borrowings are comprised primarily of fixed rate debt and variable rate debt with a short term portion where interest has already been fixed. They are classified under other financial liabilities and measured at their amortized cost. Tenaris estimates that the fair value of its main financial liabilities is approximately 99.7% of its carrying amount including interests accrued as of June 30, 2019 as compare with 99.3% as of December 31, 2018. Fair values were calculated using standard valuation techniques for floating rate instruments and comparable market rates for discounting flows.

20	Subsequent event

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 CNV, which permits the Company to delist from BYMA without making a delisting public tender offer.

Shareholders holding shares through CVSA on June 11, 2019 who were absent from the General Shareholders Meeting may exercise the right under article 22 of the Company’s articles of association (”Appraisal Right”) to have such shares repurchased by the Company at the arithmetic average of the closing Argentine peso sale price per share as reported by BYMA for the ninety (90) calendar-day period immediately preceding the date of the General Shareholders Meeting. Qualifying shareholders wishing to exercise Appraisal Rights may do so from July 30, 2019 to (and including) August 29, 2019. Based on the total amount of Tenaris shares held through CVSA at the close of trading on July 26, 2019 (excluding those shares that are held by Deutsche Bank as depositary under the Company’s ADS facility), the Company estimates that the maximum number of shares potentially eligible for Appraisal Rights should not exceed 16,735,783 shares, or approximately 1.4% of Tenaris’s total issued and outstanding capital stock. If all holders of such potentially eligible shares were to exercise Appraisal Rights, the maximum amount payable by the Company would not exceed of ARS9.5 billion, which at the exchange rate as of the close of business on July 29, 2019, equaled to approximately $218.7 million.

The repurchase of qualifying shares in connection with any exercise of Appraisal Rights will be consummated on the date that is 180 days from the date of the General Shareholders Meeting, i.e., on January 24, 2020. The repurchase price for such shares will be paid in Argentine pesos, and the Company will not be required to pay any interest or any other additional amounts on or with respect to such repurchase price.

Edgardo Carlos

Chief Financial Officer

Tenaris S.A. Half-year report 2019-Interim management report

Exhibit – Alternative performance measures

EBITDA, Earnings before interest, tax, depreciation and amortization.

EBITDA provides an analysis of the operating results excluding depreciation and amortization and impairments, as they are non-cash variables which can vary substantially from company to company depending on accounting policies and the accounting value of the assets. EBITDA is an approximation to pre-tax operating cash flow and reflects cash generation before working capital variation. EBITDA is widely used by investors when evaluating businesses (multiples valuation), as well as by rating agencies and creditors to evaluate the level of debt, comparing EBITDA with net debt. EBITDA is calculated in the following manner:

EBITDA = Operating results + Depreciation and amortization + Impairment charges/(reversals).

	Three-month period ended June 30,				Six-month period ended June 30,
(all amounts in thousands of U.S. dollars)	2019		2018		2019		2018

Operating income (loss)		234,488		222,436		493,504		434,633
Depreciation and amortization		135,220		140,401		266,555		282,203
EBITDA		369,708		362,837		760,059		716,836

Net Cash / (Debt)

This is the net balance of cash and cash equivalents, other current investments and fixed income investments held to maturity less total borrowings. It provides a summary of the financial solvency and liquidity of the company. Net cash / (debt) is widely used by investors and rating agencies and creditors to assess the company’s leverage, financial strength, flexibility and risks.

Net cash/ debt is calculated in the following manner:

Net cash= Cash and cash equivalents + Other investments (Current and Non-Current) +/- Derivatives hedging borrowings and investments– Borrowings (Current and Non-Current).

(all amounts in thousands of U.S. dollars)	At June 30,
	2019			2018
Cash and cash equivalents		1,201,987			427,960
Other current investments		360,694			730,240
Non-current Investments		22,800			192,613
Derivatives hedging borrowings and investments		15,051			(87,806	)
Borrowings – current and non-current		(894,301	)		(840,495	)
Net cash / (debt)		706,231			422,512

Free Cash Flow

Free cash flow is a measure of financial performance, calculated as operating cash flow less capital expenditures. FCF represents the cash that a company is able to generate after spending the money required to maintain or expand its asset base.

Free cash flow is calculated in the following manner: Free cash flow = Net cash (used in) provided by operating activities - Capital expenditures.

	Three-month period ended June 30,						Six-month period ended June 30,
(all amounts in thousands of U.S. dollars)	2019			2018			2019			2018

Net cash provided by operating activities		342,301			351,242			889,916			321,675
Capital expenditures		(97,378	)		(103,793	)		(183,064	)		(195,731	)
		244,923			247,449			706,852			125,944

Tenaris S.A. Half-year report 2019-Interim management report

INVESTOR INFORMATION

Investor Relations Director

Giovanni Sardagna

Luxembourg Office

29 avenue de la Porte-Neuve
3^rd Floor
L-2227 Luxembourg
(352) 26 47 89 78 tel
(352) 26 47 89 79 fax

Phones
USA 1 888 300 5432
Argentina (54) 11 4018 2100		General Inquiries
Italy (39) 02 9925 0954		investors@tenaris.com
Mexico (52) 55 5282 9900

Stock Information
New York Stock Exchange (TS)		ADS Depositary Bank
Mercato Telematico Azionario (TEN)		Deutsche Bank
Mercado de Valores de Buenos Aires (TS)		CUSIP No. 88031M109
Bolsa Mexicana de Valores, S.A. de C.V. (TS)

Internet
www.tenaris.com