Horacio A. Grigera Naón

Gender	Male
Country	Argentina
Year of birth	1947
OECD member	No

Number of cases in which have they been involved

Cases in which this arbitrator has been involved, divided into claimant-appointed, respondent-appointed, or presiding arbitrator

As president	Claimant/appointed	Respondent/appointed	Total
3	26	3	32

Additional information about nationality

Frequency with which this arbitrator has been appointed by claimants/respondents of the same/different nationality as the arbitrator

This arbitrator has been appointed by claimant 0% (0) of times from parties of the SAME country

This arbitrator has been appointed by claimant 100% (23) of times from parties of the DIFFERENT countries

This arbitrator has been appointed by respondent 0% (0) of times from parties of the SAME country

This arbitrator has been appointed by respondent 100% (3) of times from parties of the DIFFERENT countries

Claimants' countries

Nationalities of the claimants appointing this arbitrator

Country	No. of times
United States	6
United Kingdom	4
Spain	4
Canada	2
Peru	1
Panama	1
France	1
Turkey	1
Netherlands	1
Germany	1
Egypt	1

Respondents' countries

Nationalities of the respondent States appointing this arbitrator

Country	No. of times
Peru	2
Bosnia and Herzegovina	1

Appointed as President Arbitrator (3 case/s)

Cases in which this arbitrator was appointed as presiding arbitrator

Case	Appointed by	Law firms
Oiltanking GmbH, Graña Montero S.A. and Graña Montero S.A.A.	Unknown	Ministerio para la Defensa Legal del Estado, La Paz, Bolivia
ARB(AF)/00/2 Técnicas Medioambientales Tecmed, S.A.	Appointed by agreement of party-appointed arbitrators	Secretaría de Economía, Mexico City, Mexico Jones, Day, Reavis & Pogue
ICSID Case No ARB/04/11 Russell Resources International Limited and others	Appointed by designated appointing authority	Cabinet Tshibangu & Associés Ministère de la Justice et des Affaires Parlementaires, Kinshasa-Gombe, Democratic Republic of the Congo Managing Director, Russell Resources International Limited

Appointed as Claimants Arbitrator (26 case/s)

Cases in which this arbitrator was appointed by claimants

Case	Law firms
PCA Case No 2011-14 Abertis Infraestructuras S.A.	Dechert, Paris, France Dechert, Washington, D.C., U.S.A. Chadbourne & Parke Clifford Chance, Washington, D.C., U.S.A.
LCIA Case No UN3481 EnCana Corporation	Bustamante & Bustamante Weil, Gotshal & Manges, Paris, France McCarthy Tétrault, Toronto, Canada
PCA Case No. 2009-23 Chevron and TexPet	Procuraduría General del Estado, Quito, Ecuador Foley Hoag Winston & Strawn, London, U.K. Dechert, Brussels, Belgium King & Spalding Three Crowns, Paris, France Matrix Chambers, London, U.K.
ARB/18/3 Telefónica, S.A.	Agencia Nacional de Defensa Jurídica del Estado, Bogota, Colombia Dechert, Paris, France White & Case, London, U.K.
ARB/18/29 The Carlyle Group L.P. and others	3 Verulam Buildings, London, U.K. Weil Gotshal & Manges, New York, NY, U.S.A.
ARB/16/42 Omega Engineering LLC and Oscar Rivera	Shearman & Sterling, New York, NY, U.S.A. Jones Day, London, U.K. Shook Hardy & Bacon
ARB/16/41 Eco Oro Minerals Corp.	Agencia Nacional de Defensa Jurídica del Estado, Bogota, Colombia Latham & Watkins, Paris, France Freshfields Bruckhaus Deringer, Washington, D.C., U.S.A.
ARB/16/34 Bridgestone Licensing Services, Inc. and Bridgestone Americas, Inc.	Arnold & Porter, Washington, D.C., U.S.A Ministry of Economy and Finances, Panama, Republic of Panama Akin, Gump, Strauss, Hauer & Feld, Washington, D.C., U.S.A.
ARB/15/31 Gabriel Resources Ltd. and Gabriel Resources (Jersey)	Lalive, Geneva, Switzerland Leaua Damcali Deaconu Paunescu – LDDP, Bucharest, Romania White & Case, Washington, D.C., U.S.A Tuca Zbârcea & Asociatii, Bucharest, Romania
ARB/09/17 Commerce Group Corp. and San Sebastian Gold Mines, Inc.	Dewey & LeBoeuf, Washington, D.C., U.S.A. Machulak, Robertson & Sodos, S.C., Milwaukee, WI, U.S.A.
ARB/11/4 Club Hotel Loutraki S.A. and Casinos Austria International Holding GMBH	Public Attorney of the Republic of Serbia, Belgrade, Serbia Arnold & Porter, Washington, D.C., U.S.A
ARB/16/23 Agroinsumos Ibero-Americanos, S.L. and others	Procuraduría General de la República, Caracas, Venezuela GST LLP, Washington, U.S.A. Baker McKenzie, Caracas, Venezuela Freshfields Bruckhaus Deringer, New York, NY, U.S.A. Altum Abogados S.C., Caracas, Venezuela
ARB/16/22 Shell Philippines Exploration B.V.	Arnold & Porter, Washington, D.C., U.S.A Office of the Solicitor General of the Philippines, Makati City, Philippines King & Spalding, Singapore Romulo Mabanta Buenaventura Sayoc & de los Angeles, Makati City, Philippines
ARB(AF)/12/4 Telefónica S.A.	Secretaría de Economía, Mexico City, Mexico Jones Day, London, U.K. Holland & Knight, Mexico City, Mexico
ARB/15/16 BayWa r.e. renewable energy GmbH and BayWa r.e. Asset Holding GmbH	Abogacía General del Estado, The Ministry of Justice of the Government of Spain Cuatrecasas, Gonçalves Pereira, Madrid, Spain
ARB/15/14 Álvarez y Marín Corporación S.A. and others	Hogan Lovells US, Miami, FL, U.S.A. Ministerio de Economía y Finanzas, Panama, Republic of Panama Dechert, Paris, France and Brussels, Belgium
ARB/13/11 Valores Mundiales, S.L. and Consorcio Andino S.L.	Foley Hoag, Washington, D.C., U.S.A. Procuraduría General de la República, Caracas, Venezuela Covington & Burling LLP
ARB/13/1 Karkey Karadeniz Elektrik Uretim A.S.	Allen & Overy, London, U.K. Arnold & Porter, London, UK Hassan Kaunain Nafees, Islamabad, Pakistan
ICSID Case No ARB/12/36 Société Civile Immobilière de Gaëta	Cabinet Mamadou S. Traore Orrick Rambaud Martel, Paris, France Derains & Gharavi, Paris, France SCP Akl & Akl
ICSID Case No ARB/10/21 International Quantum Resources Limited, Frontier SPRL and Compagnie Minière de Sakania SPRL	Bredin Prat, Paris, France Fasken Martineau DuMoulin, Montreal, Canada Fasken Martineau, Vancouver, Canada
ARB/08/4 Murphy Exploration and Production Company International	Foley Hoag, Washington, D.C., U.S.A. Procurador General del Estado, Quito, Ecuador Winston & Strawn, London, U.K. King & Spalding, Houston, TX, U.S.A. Pérez Bustamente & Ponce
ICSID Case No ARB/08/10 Repsol YPF Ecuador, S.A. and others v. Republic of Ecuador and Empresa Estatal Petróleos del Ecuador (PetroEcuador)	Appointed by designated appointing authority Freshfields Bruckhaus Deringer, Washington, D.C., U.S.A.
ARB/07/13 S&T Oil Equipment & Machinery Ltd.	Tuca Zbârcea & Asociatii, Bucharest, Romania White & Case, Washington, D.C., U.S.A King & Spalding, Houston, TX, U.S.A.
ARB/06/4 Vestey Group Ltd	Procuradora General de la República, Caracas, Venezuela Guglielmino & Asociados, Buenos Aires, Argentina Freshfields Bruckhaus Deringer, Washington, D.C., U.S.A. Travieso Evans Arria Rengel & Paz, Caracas, Venezuela
ICSID Case No ARB/06/21 City Oriente Limited	Procuraduría de Petroecuador, Quito, Ecuador Weil Gotshal & Manges, New York, NY, U.S.A. King & Spalding, Houston, TX, U.S.A. King & Spalding, Washington, D.C., U.S.A Quevedo & Ponce, Quito, Ecuador
ARB(AF)/18/6 Dick Fernando Abanto Ishivata	Procuraduría General de la República, Caracas, Venezuela Guglielmino & Asociados, Buenos Aires, Argentina Freshfields Bruckhaus Deringer US, Washington, D.C., U.S.A. Dechamps International Law, London, U.K. D’Empaire Reyna Abogados, Caracas, Venezuela

Appointed as Respondent Arbitrator (3 case/s)

Cases in which this arbitrator was appointed by respondent State

Case	Law firms
ARB/16/36 Viaduct d.o.o. Portorož, Vladimir Zevnik and Boris Goljevšček
ICSID Case No ARB/12/5 Isolux Corsán Concesiones S.A.	Estudio Echecopar, Lima, Peru Ministerio de Economía y Finanzas, Lima, Peru White & Case, Washington, D.C., U.S.A Payet, Rey, Cauvi Abogados, Lima, Peru Shearman & Sterling, Paris, France
ICSID Case No ARB/11/9 Caravelí Cotaruse Transmisora de Energía S.A.C. v Republic of Peru	White & Case, Washington, D.C., U.S.A Estudio Echecopar, Lima, Peru Ministerio de Economía y Finanzas, Lima, Peru Payet, Rey, Cauvi Abogados, Lima, Peru Shearman & Sterling, Paris, France