# To the Shareholders of

Tenaris S.A.

_Source: `DeepSeekOCR_Ardian_pruned_1k/energy-oil-gas-equipment-services/NYSE_TS_2020/NYSE_TS_2020.mmd` · pages 118-124_

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To the Shareholders of

Tenaris S.A.

## Report on the audit of the consolidated financial statements

## Our opinion

In our opinion, the accompanying consolidated financial statements give a true and fair view of the consolidated financial position of Tenaris S.A. (the "Company") and its subsidiaries (the "Group") as at 31 December 2020, and of its consolidated financial performance and its consolidated cash flows for the year then ended in accordance with International Financial Reporting Standards (IFRSs) as issued by the International Accounting Standards Board (IASB) and in accordance with IFRS as adopted by the European Union.

Our opinion is consistent with our additional report to the Audit Committee of the Company's Board of Directors (the "Audit Committee").

## What we have audited

The Group's consolidated financial statements comprise:

the consolidated income statement for the year then ended;
the consolidated statement of comprehensive income for the year then ended;
the consolidated statement of financial position as at 31 December 2020;
the consolidated statement of changes in equity for the year then ended;
the consolidated statement of cash flows for the year then ended; and
the notes to the consolidated financial statements, which include a summary of significant accounting policies.

## Basis for opinion

We conducted our audit in accordance with the EU Regulation No 537/2014, the Law of 23 July 2016 on the audit profession (Law of 23 July 2016) and with International Standards on Auditing (ISAs) as issued by the International Auditing and Assurance Standards Board (IAASB) and as adopted for Luxembourg by the "Commission de Surveillance du Secteur Financier" (CSSF). Our responsibilities under the EU Regulation No 537/2014, the Law of 23 July 2016 and ISAs as adopted for Luxembourg by the CSSF are further described in the "Responsibilities of the "Réviseur d'entreprises agréé" for the audit of the consolidated financial statements" section of our report.

We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis for our opinion.

We are independent of the Group in accordance with the International Code of Ethics for Professional Accountants, including International Independence Standards, issued by the International Ethics Standards Board for Accountants (IESBA Code) as adopted for Luxembourg by the CSSF together with the ethical requirements that are relevant to our audit of the consolidated financial statements. We have fulfilled our other ethical responsibilities under those ethical requirements.

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To the best of our knowledge and belief, we declare that we have not provided non-audit services that are prohibited under Article 5(1) of the EU Regulation No 537/2014.

The non-audit services that we have provided to the Company and its controlled undertakings, if applicable, for the year ended 31 December 2020, are disclosed in Note 30 to the consolidated financial statements.

## Key audit matters

Key audit matters are those matters that, in our professional judgment, were of most significance in our audit of the consolidated financial statements of the current period. These matters were addressed in the context of our audit of the consolidated financial statements as a whole, and in forming our opinion thereon, and we do not provide a separate opinion on these matters.

## Key audit matter

## How our audit addressed the key audit matter

Business combinations - Acquisition of IPSCO Tubulars Inc.

On January 2, 2020, Tenaris acquired 100% of the shares of IPSCO, a U.S. manufacturer of steel pipes, from PAO TMK for a net consideration of USD 1,029 million. The acquisition was accounted for as a business combination.

The acquisition resulted in 170 million USD of identified intangible assets being recorded.

The acquisition of IPSCO was important to our audit as it involved significant judgements and assumptions in determining the fair value of the net assets acquired, including the identified intangible assets.

The disclosures related to this matter are included in Note 32 to the consolidated financial statements.
We evaluated and tested controls in place relating to the acquisition accounting, including the control over management's valuation of the identified intangible assets.

Moreover, we obtained and read the purchase agreement.

In addition, we assessed the methodology adopted by management for calculating the fair value of the net assets acquired, in particular for the identified intangible assets, which included:

• evaluating the appropriateness of the valuation methods,

• testing the completeness and accuracy of data provided by management,

• review of the reasonableness of significant assumptions

Professionals with specialized skill and knowledge were used to assist in the evaluation of the Company's cash flow projections included in the purchase price allocation report prepared by a third party expert.

We finally assessed the adequacy of the disclosures in the consolidated financial statements.

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## Recoverability of long-lived assets

The Group's balance sheet includes goodwill (USD 1,086 million) and other long lived assets (USD 6,193 million Property, plant & equipment and USD 343 million of Intangible assets). The Group is required to test the amount of goodwill and other indefinite life intangible assets for impairment at least annually. Other long-lived assets are tested in case of impairment triggers.

During the year, Management has tested for impairment those cash generating units ("CGUs") containing goodwill and indefinite life intangibles and those where impairment indicators were identified. As a result, an impairment charge of approximately USD 622 million was recorded, out of which USD 225 million and USD 357 million related to OCTG - USA and IPSCO goodwill balances.

We focused our audit effort on the U.S. seamless and welded tubes businesses (OCTG – USA, Bay City and IPSCO) due to their significance, the sensitivity of the US operations to the deep reduction in oil and gas prices and subsequent drop in drilling activity and the effects derived from the acquisition and integration of IPSCO over the other US businesses.

The impairment test was important to our audit as it involved significant judgements and assumptions in the assessment of the recoverable amounts of the CGUs and required significant audit effort.

Due to the conditions described above, Management prepared different scenarios for OCTG – USA, Bay City and IPSCO CGUs to determine their recoverable amounts.

The disclosures related to this matter are included in Notes II.H, 5, 10 and 11 to the consolidated financial statements.
We evaluated and tested controls in place over the analysis of impairment indicators on long lived assets, review of assumptions used and discounted cash flow calculations.

In addition, we challenged the impairment indicators analysis memorandum and the cash flow projections included in the impairment test prepared by Management. Our audit procedures included, among others, the involvement of professionals with specialized skill and knowledge to assist us in evaluating certain assumptions and the valuation methodology used by the Group.

We furthermore assessed the reasonableness of other data used by:

• comparing them to external and historical data, when available, such as analyst reports and evolution of rig counts, and by

• analyzing sensitivities in the valuation model, evaluating whether a reasonably possible change in assumptions could cause the carrying amount to exceed its recoverable amount.

We also compared actual cash flow results with previous forecasts. We finally assessed the adequacy of the disclosures in the consolidated financial statements.

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## Other information

The Board of Directors is responsible for the other information. The other information comprises the information stated in the annual report including the consolidated management report and the Corporate Governance Statement but does not include the consolidated financial statements and our audit report thereon.

Our opinion on the consolidated financial statements does not cover the other information and we do not express any form of assurance conclusion thereon.

In connection with our audit of the consolidated financial statements, our responsibility is to read the other information identified above and, in doing so, consider whether the other information is materially inconsistent with the consolidated financial statements or our knowledge obtained in the audit, or otherwise appears to be materially misstated. If, based on the work we have performed, we conclude that there is a material misstatement of this other information, we are required to report that fact. We have nothing to report in this regard.

Responsibilities of the Board of Directors and those charged with governance for the consolidated financial statements

The Board of Directors is responsible for the preparation and fair presentation of the consolidated financial statements in accordance with IFRSs as issued by the IASB and in accordance with IFRS as adopted by the European Union, and for such internal control as the Board of Directors determines is necessary to enable the preparation of consolidated financial statements that are free from material misstatement, whether due to fraud or error.

In preparing the consolidated financial statements, the Board of Directors is responsible for assessing the Group's ability to continue as a going concern, disclosing, as applicable, matters related to going concern and using the going concern basis of accounting unless the Board of Directors either intends to liquidate the Group or to cease operations, or has no realistic alternative but to do so.

Those charged with governance are responsible for overseeing the Group's financial reporting process.

Responsibilities of the "Réviseur d'entreprises agréé" for the audit of the consolidated financial statements

The objectives of our audit are to obtain reasonable assurance about whether the consolidated financial statements as a whole are free from material misstatement, whether due to fraud or error, and to issue an audit report that includes our opinion. Reasonable assurance is a high level of assurance, but is not a guarantee that an audit conducted in accordance with the EU Regulation No 537/2014, the Law of 23 July 2016 and with ISAs as issued by the IAASB and as adopted for Luxembourg by the CSSF will always detect a material misstatement when it exists. Misstatements can arise from fraud or error and are considered material if, individually or in the aggregate, they could reasonably be expected to influence the economic decisions of users taken on the basis of these consolidated financial statements.

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As part of an audit in accordance with the EU Regulation No 537/2014, the Law of 23 July 2016 and with ISAs as adopted for Luxembourg by the CSSF, we exercise professional judgment and maintain professional scepticism throughout the audit. We also:

- identify and assess the risks of material misstatement of the consolidated financial statements, whether due to fraud or error, design and perform audit procedures responsive to those risks, and obtain audit evidence that is sufficient and appropriate to provide a basis for our opinion. The risk of not detecting a material misstatement resulting from fraud is higher than for one resulting from error, as fraud may involve collusion, forgery, intentional omissions, misrepresentations, or the override of internal control;

• obtain an understanding of internal control relevant to the audit in order to design audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Group's internal control;

• evaluate the appropriateness of accounting policies used and the reasonableness of accounting estimates and related disclosures made by the Board of Directors;

• conclude on the appropriateness of the Board of Directors' use of the going concern basis of accounting and, based on the audit evidence obtained, whether a material uncertainty exists related to events or conditions that may cast significant doubt on the Group's ability to continue as a going concern. If we conclude that a material uncertainty exists, we are required to draw attention in our audit report to the related disclosures in the consolidated financial statements or, if such disclosures are inadequate, to modify our opinion. Our conclusions are based on the audit evidence obtained up to the date of our audit report. However, future events or conditions may cause the Group to cease to continue as a going concern;

• evaluate the overall presentation, structure and content of the consolidated financial statements, including the disclosures, and whether the consolidated financial statements represent the underlying transactions and events in a manner that achieves fair presentation;

• obtain sufficient appropriate audit evidence regarding the financial information of the entities and business activities within the Group to express an opinion on the consolidated financial statements. We are responsible for the direction, supervision and performance of the Group audit. We remain solely responsible for our audit opinion.

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We communicate with those charged with governance regarding, among other matters, the planned scope and timing of the audit and significant audit findings, including any significant deficiencies in internal control that we identify during our audit.

We also provide those charged with governance with a statement that we have complied with relevant ethical requirements regarding independence, and communicate to them all relationships and other matters that may reasonably be thought to bear on our independence, and where applicable, actions taken to eliminate threats or safeguards applied.

From the matters communicated with those charged with governance, we determine those matters that were of most significance in the audit of the consolidated financial statements of the current period and are therefore the key audit matters. We describe these matters in our audit report unless law or regulation precludes public disclosure about the matter.

## Report on other legal and regulatory requirements

The consolidated management report is consistent with the consolidated financial statements and has been prepared in accordance with applicable legal requirements.

The Corporate Governance Statement is included in the consolidated management report. The information required by Article 68ter Paragraph (1) Letters c) and d) of the Law of 19 December 2002 on the commercial and companies register and on the accounting records and annual accounts of undertakings, as amended, is consistent with the consolidated financial statements and has been prepared in accordance with applicable legal requirements.

We have been appointed as "Réviseur d'Entreprises Agréé" by the General Meeting of the Shareholders on 2 June 2020 and the duration of our uninterrupted engagement, including previous renewals and reappointments, is 19 years.

PricewaterhouseCoopers, Société coopérative
Represented by

Luxembourg, 29 March 2021

Fabrice Goffin