UNITED STATES
SECURITIES AND EXHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 36)*
TUBOS DE ACERO DE MEXICO, S.A.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
898592506
(CUSIP Number)
Mr. Fernando R. Mantilla
Av. Leandro N. Alem 1067, 28th Floor, 1001 - Buenos Aires,
Argentina (54-11) 4018-2245
(Name, Address and Telephone Number of Person Authorized to
Receive Notices and Communications)
March 31, 2003
(Date of Event which Requires Filing of this Statement)
If the filing person has previously filed a statement on Schedule 13G to
report the acquisition that is the subject of this Schedule 13D, and is
filing this schedule because of ss.ss.240.13d-1(e), 240.13d-1(f) or
240.13d-1(g), check the following box. |_|
Note: Schedules filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See ss.240.13d-7 for
other parties to whom copies are to be sent.
*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not bee
deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
that section of the Act but shall be subject to all other provisions of the
Act (however, see the Notes).
CUSIP No. 898592506
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1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
ROBERTO ROCCA
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
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5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
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6. Citizenship or Place of Organization ITALY
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) IN
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CUSIP No. 898592506
--------------------------------------------------------------------------------
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
SIDERCA Sociedad Anonima Industrial y Comercial
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
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6. Citizenship or Place of Organization ARGENTINA
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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CUSIP No. 898592506
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1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
SIDERCA INTERNATIONAL ApS
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
--------------------------------------------------------------------------------
3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
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6. Citizenship or Place of Organization DENMARK
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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CUSIP No. 898592506
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1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
ROCCA & PARTNERS Sociedad Anonima
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
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6. Citizenship or Place of Organization BRITISH VIRGIN ISLANDS
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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CUSIP No. 898592506
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1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
SAN FAUSTIN N.V.
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
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6. Citizenship or Place of Organization NETHERLANDS ANTILLES
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
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11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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CUSIP No. 898592506
--------------------------------------------------------------------------------
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
SIDERTUBES S.A.
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
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6. Citizenship or Place of Organization LUXEMBOURG
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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CUSIP No. 898592506
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1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
I.I.I. INDUSTRIAL INVESTMENTS INC.
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
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6. Citizenship or Place of Organization BRITISH VIRGIN ISLANDS
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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CUSIP No. 898592506
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1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
TENARIS S.A.
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
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6. Citizenship or Place of Organization LUXEMBOURG
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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CUSIP No. 898592506
--------------------------------------------------------------------------------
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
INVERTUB S.A.
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
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3. SEC Use Only
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4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
--------------------------------------------------------------------------------
6. Citizenship or Place of Organization ARGENTINA
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Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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CUSIP No. 898592506
--------------------------------------------------------------------------------
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
SIDTAM LIMITED
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2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b)
--------------------------------------------------------------------------------
3. SEC Use Only
--------------------------------------------------------------------------------
4. Source of Funds (See Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e)
--------------------------------------------------------------------------------
6. Citizenship or Place of Organization BRITISH VIRGIN ISLANDS
--------------------------------------------------------------------------------
Number of 7. Sole Voting Power NONE
Shares Bene- ------------------------------------------------------------
ficially Owned by
Each Reporting 8. Shared Voting Power: 324,064,223 Shares of TAMSA
Person With Common Stock (1 ADR=5 shares)
------------------------------------------------------------
9. Sole Dispositive Power NONE
------------------------------------------------------------
10. Shared Dispositive Power 324,064,223 Shares of TAMSA
Common Stock (1 ADR=5 shares)
--------------------------------------------------------------------------------
11. Aggregate Amount Beneficially Owned by Each Reporting Person
324,064,223
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) NOT APPLICABLE
--------------------------------------------------------------------------------
13. Percent of Class Represented by Amount in Row (11) 94.50%
--------------------------------------------------------------------------------
14. Type of Reporting Person (See Instructions) CO
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AMENDMENT No. 36 TO SCHEDULE 13D
This Amendment No. 36 amends the Statement on Schedule 13D originally filed on
September 24, 1992 and amended and restated as of November 11, 2002, as amended
("Schedule 13D"), on behalf of Roberto Rocca, Siderca Sociedad Anonima,
Industrial y Comercial ("Siderca SAIC"), and Siderca International ApS ("Siderca
ApS"), together with Rocca & Partners S.A. ("Rocca & Partners"), San Faustin
N.V. ("San Faustin"), Sidertubes S.A. ("Sidertubes"), I.I.I. Industrial
Investments Inc. ("III BVI"), Tenaris S.A. ("Tenaris"), Invertub Sociedad
Anonima ("Invertub") and Sidtam Limited ("Sidtam") (collectively, "Reporting
Persons"), relating to the common shares, without par value (the "TAMSA
Shares"), of Tubos de Acero de Mexico, S.A., a Mexican company ("TAMSA").
Item 2. Identity and Background
No changes except the following:
On January 31, 2003, the board of directors of Tenaris approved the appointment
of Tenaris's principal corporate officers effective immediately. Reference is
made to the press release issued by Tenaris on January 31, 2003, announcing the
appointment of these corporate officers. An updated list of the directors and
executive officers of Tenaris and the information required by subparagraphs (a)
through (c) and subparagraph (f) of Item 2 of Schedule 13D, as such information
pertains to the directors and executive officers of Tenaris, is set forth on
Schedule A and is hereby incorporated herein by reference. To the best knowledge
of the Reporting Persons, none of the executive officers of Tenaris has during
the last five years been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors) or been a party to a civil proceeding of a
judicial or administrative body of competent jurisdiction and as a result of
such proceeding was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to, federal
or state securities laws or finding any violation with respect to such laws.
Item 4. Purpose of the Transaction
Reference is made to the press release issued by Tenaris on March 31, 2003,
announcing that, subject to the approvals of the U.S. and Mexican securities
regulators and TAMSA's extraordinary shareholders meeting, Tenaris intends to
effect an exchange of its shares and ADSs for any TAMSA shares and ADSs not held
by Tenaris or its affiliates in accordance with Mexican and U.S. laws. Tenaris
also reported in its March 31, 2003 press release that it currently does not
expect to obtain the requisite approvals, and consequently be in a position to
effect any exchange of shares and ADSs, prior to June 2003.
Item 5. Interest in Securities of the Issuer
No changes.
Item 7. Material to be Filed as Exhibits
The press release of Tenaris, dated January 31, 2003, announcing the appointment
of its audit committee and principal corporate officers, is filed as an exhibit
hereto.
The press release of Tenaris, dated March 31, 2003, announcing Tenaris's intent
to effect an exchange of its shares and ADSs for any TAMSA shares and ADSs not
held by Tenaris or its affiliates, is filed as an exhibit hereto.
Powers of attorney for Tenaris S.A., I.I.I. Industrial Investments Inc. and
Invertub S.A. are incorporated by reference into this Amendment to the ones
filed as exhibits to Amendment No. 34 to the Schedule 13D. Powers of attorney
for each of the other Reporting Persons are incorporated by reference into this
Amendment to the ones filed as exhibits to Amendment No. 23 to the Schedule 13D
of Siderca ApS.
The written agreement of the Reporting Persons related to the filing of this
Schedule 13D as required by Rule 13d-k(1)(iii) is included in the signature
pages hereto and is hereby filed as an exhibit hereto.
Schedule A
Tenaris S.A.
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Executive Officers Business Address Present Principal Citizenship
Occupation
-------------------------------------------------------------------------------------------------------------------
Roberto Rocca - Chairman Av. Leandro N. Alem 1067, Honorary Chairman of San Italian
of the Board of Directors Buenos Aires - Argentina Faustin N.V., President
of Dalmine and President
of Siderca
-------------------------------------------------------------------------------------------------------------------
Paolo Rocca - President and Av. Leandro N. Alem 1067, President and Chief Italian
Chief Executive Officer Buenos Aires - Argentina Executive Officer of
Tenaris
-------------------------------------------------------------------------------------------------------------------
Carlos Condorelli -Chief Av. Leandro N. Alem 1067, Chief Financial Officer Argentine
Financial Officer Buenos Aires - Argentina of Tenaris
-------------------------------------------------------------------------------------------------------------------
Cecilia Bilesio - Corporate Edificio Parque Reforma, Corporate Secretary of Argentine
Secretary Campos Eliseos 400, 11560 Tenaris
Mexico, D.F., Mexico
-------------------------------------------------------------------------------------------------------------------
Directors Business Address Present Principal Citizenship
Occupation
-------------------------------------------------------------------------------------------------------------------
Roberto Bonatti Av. Leandro N. Alem 1067, President of San Faustin Italian
Buenos Aires - Argentina N.V.
-------------------------------------------------------------------------------------------------------------------
Carlos Franck Av. Leandro N. Alem 1067, President of Santa Maria Argentine
Buenos Aires - Argentina S.A.I.F.
-------------------------------------------------------------------------------------------------------------------
Pedro Pablo Kuczynski 2665 South Bay Shore President and Chief Peruvian
Drive, Suite 1101 Executive Officer, Latin
Coconut Grove America Enterprise Fund,
Miami, Florida 33133 USA
USA
-------------------------------------------------------------------------------------------------------------------
Bruno Marchettini Av. Leandro N. Alem 1067, Director of Siderar S.A., Italian
Buenos Aires - Argentina and director of Siderca
-------------------------------------------------------------------------------------------------------------------
Gianfelice Mario Rocca Av. Leandro N. Alem 1067, Chairman of San Faustin Italian
Buenos Aires - Argentina N.V.
-------------------------------------------------------------------------------------------------------------------
Paolo Rocca Av. Leandro N. Alem 1067, President and Chief Italian
Buenos Aires - Argentina Executive Officer of
Tenaris
-------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------
Roberto Rocca Av. Leandro N. Alem 1067, Honorary Chairman of San Italian
Chairman of the Board of Buenos Aires - Argentina Faustin N.V., President
Directors of Dalmine and President
of Siderca
-------------------------------------------------------------------------------------------------------------------
Jaime Serra Puche Prol. Paseo de la Reforma A partner in S.A.I. Mexican
600, Desp. 103 Consultores S.C., Mexico
01210-Mexico D.F.
-------------------------------------------------------------------------------------------------------------------
Amadeo Vazquez y Vazquez Austria 2670-3(0)piso, President of Telecom Argentine
(1425) Buenos Aires - Argentina, a director of
Argentina Siderca, a director of
BBVA Banco Frances S.A.,
a member of the board of
the Buenos Aires Stock
Exchange, Vice President
of the Fundacion
Mediterranea and
Vice-President Finance
of Tenaris
-------------------------------------------------------------------------------------------------------------------
Guillermo F. Vogel Edificio Parque Reforma, Vice Chairman of Tamsa Mexican
Campos Eliseos 400, 11560 and Vice-President
Mexico, D.F., Mexico Finance of Tenaris
-------------------------------------------------------------------------------------------------------------------
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by ROBERTO ROCCA to sign this
statement, certify that the information set forth in this Schedule 13D is true,
complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of ROCCA & PARTNERS S.A., SAN
FAUSTIN N.V., SIDERCA Sociedad Anonima Industrial y Comercial, SIDERCA
INTERNATIONAL ApS, SIDERTUBES S.A., I.I.I. INDUSTRIAL INVESTMENTS Inc., TENARIS
S.A., INVERTUB Sociedad Anonima and SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by ROCCA & PARTNERS S.A. to sign
this statement, certify that the information set forth in this Schedule 13D is
true, complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, SAN FAUSTIN N.V.,
SIDERCA Sociedad Anonima Industrial y Comercial, SIDERCA INTERNATIONAL ApS,
SIDERTUBES S.A., I.I.I. INDUSTRIAL INVESTMENTS Inc., TENARIS S.A., INVERTUB
Sociedad Anonima and SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by SAN FAUSTIN N.V. to sign this
statement, certify that the information set forth in this Schedule 13D is true,
complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, ROCCA & PARTNERS
S.A., SIDERCA Sociedad Anonima Industrial y Comercial, SIDERCA INTERNATIONAL
ApS, SIDERTUBES S.A., I.I.I. INDUSTRIAL INVESTMENTS Inc., TENARIS S.A., INVERTUB
Sociedad Anonima and SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by I.I.I. INDUSTRIAL INVESTMENTS
Inc. to sign this statement, certify that the information set forth in this
Schedule 13D is true, complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, ROCCA & PARTNERS
S.A., SAN FAUSTIN N.V., SIDERCA Sociedad Anonima Industrial y Comercial, SIDERCA
INTERNATIONAL ApS, SIDERTUBES S.A., TENARIS S.A., INVERTUB Sociedad Anonima and
SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by SIDERTUBES S.A. to sign this
statement, certify that the information set forth in this Schedule 13D is true,
complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, ROCCA & PARTNERS
S.A., SAN FAUSTIN N.V., SIDERCA Sociedad Anonima Industrial y Comercial, SIDERCA
INTERNATIONAL ApS, I.I.I. INDUSTRIAL INVESTMENTS Inc., INVERTUB Sociedad
Anonima, TENARIS S.A. and SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by TENARIS S.A. to sign this
statement, certify that the information set forth in this Schedule 13D is true,
complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, ROCCA & PARTNERS
S.A., SAN FAUSTIN N.V., SIDERCA Sociedad Anonima Industrial y Comercial, SIDERCA
INTERNATIONAL ApS, SIDERTUBES S.A., I.I.I. INDUSTRIAL INVESTMENTS Inc., INVERTUB
Sociedad Anonima and SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by INVERTUB S.A. to sign this
statement, certify that the information set forth in this Schedule 13D is true,
complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, ROCCA & PARTNERS
S.A., SAN FAUSTIN N.V., SIDERCA Sociedad Anonima Industrial y Comercial, SIDERCA
INTERNATIONAL ApS, SIDERTUBES S.A., I.I.I. INDUSTRIAL INVESTMENTS Inc., TENARIS
S.A. and SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by SIDERCA SOCIEDAD ANONIMA
INDUSTRIAL Y COMERCIAL to sign this statement, certify that the information set
forth in this Schedule 13D is true, complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, ROCCA & PARTNERS
S.A., SAN FAUSTIN N.V., SIDERCA INTERNATIONAL ApS, SIDERTUBES S.A., I.I.I.
INDUSTRIAL INVESTMENTS Inc., TENARIS S.A., INVERTUB S.A. and SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by SIDERCA INTERNATIONAL ApS to sign
this statement, certify that the information set forth in this Schedule 13D is
true, complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, ROCCA & PARTNERS
S.A., SAN FAUSTIN N.V., SIDERCA Sociedad Anonima Industrial y Comercial,
SIDERTUBES S.A., I.I.I. INDUSTRIAL INVESTMENTS Inc., TENARIS S.A., INVERTUB
Sociedad Anonima and SIDTAM LIMITED.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I,
Fernando Mantilla, attorney duly authorized by SIDTAM LIMITED to sign this
statement, certify that the information set forth in this Schedule 13D is true,
complete and correct.
Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this
Schedule 13D on his own behalf and on behalf of Roberto ROCCA, ROCCA & PARTNERS
S.A., SAN FAUSTIN N.V., SIDERCA Sociedad Anonima Industrial y Comercial, SIDERCA
INTERNATIONAL ApS, I.I.I. INDUSTRIAL INVESTMENTS Inc., TENARIS S.A. INVERTUB
Sociedad Anonima and SIDERTUBES S.A.
April 2, 2003
/s/ Fernando Mantilla
-------------------------------
Fernando Mantilla
Attorney-in-fact
Exhibit index:
99.1 Press release of Tenaris, dated January 31, 2003, announcing the
appointment of its audit committee and principal corporate officers
99.2 Press release of Tenaris, dated March 31, 2003, announcing Tenaris's
intent to effect an exchange of its shares and ADSs for any TAMSA shares
and ADSs not held by Tenaris or its affiliates
99.3 Powers of attorney (incorporated by reference to Amendments No. 23 and
34)
99.4 Written agreement of the Reporting Persons (included in signature pages)