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Siino Benjamin

Benjamin Siino


Benjamin Siino is a counsel in Shearman & Sterling’s International Arbitration and Public International Law Groups. His experience includes international ad hoc arbitrations, including under UNCITRAL Rules, and institutional arbitrations under the Rules of the ICC and ICSID, with a strong focus on energy, investment and general commercial arbitrations, as well as arbitrations related to Africa.

Benjamin Siino also acts as counsel in litigation proceedings before French courts, with a focus on proceedings to seek the recognition and enforcement of arbitral awards and foreign judgments.

Before joining Shearman & Sterling, Benjamin practiced as an associate in the Dispute Resolution team of a French law firm, focusing on general commercial litigation and arbitration-related matters. He also worked as an Analyst consultant for the Organisation for Economic Co-operation and Development (OECD) and for the French Ministry of Defence.

Selected Experience

Recent or pending arbitrations on which Benjamin Siino has worked include the representation of:

  • The People’s Democratic Republic of Algeria as Respondent in an ICSID arbitration initiated by Orascom TMT Investments S.à.r.l. (formerly known as Weather Investments II S.à r.l.) (ICSID Case No. ARB/12/35). The dispute related to alleged breaches of the Algeria-Belgium-Luxembourg bilateral investment treaty in relation to the operation of a mobile telephone company in Algeria.  Over USD 5 billion was at stake.

Recent or pending post-award proceedings on which Benjamin Siino has worked include:

  • Representing the majority shareholders in the former Yukos Oil Company in proceedings initiated in multiple jurisdictions to seek the recognition and enforcement of the USD 50 billion awards rendered in the arbitrations brought by the shareholders against the Russian Federation concerning the expropriation of their investments in Yukos.


  • Research Assistant, New York Convention Guide Project (www.newyorkconvention1958.org)
  • Author, L'efficacité de la convention de New York de 1958 [The efficiency of the 1958 New York Convention, in LEXÉCUTION DES SENTENCES ARBITRALES INTERNATIONALES 87 (M. de Fontmichel and J. Jourdan-Marques eds., LGDJ, 2017)
  • Author, Le Guide du Secrétariat de la CNUDCI sur la Convention de New York pour la reconnaissance et l'exécution des sentences arbitrales étrangères [The UNCITRAL Secretariat Guide on the Convention for the Recognition and Enforcement of Foreign Arbitral Awards], in CONFERENCE FOR A EURO-MEDITERRANEAN COMMUNITY OF INTERNATIONAL ARBITRATION / CONFÉRENCE POUR UNE COMMUNAUTÉ EURO-MÉDITERRANÉENNE DE L'ARBITRAGE INTERNATIONAL 21 (UNCITRAL Publication No. V. 15-06738, 2015)
  • Co-author, La réparation par le juge d'appui de la clause prévoyant une parité d'arbitres : interprétation extensive de l'article 1454 du Code de procédure civile [Intervention of the judge acting in support of the arbitral process: broad interpretation of Article 1454 of the French Code of Civil Procedure], 2009(3) REV. ARB. 521
  • Co-author, La consolidation de la place de l'estoppel dans le contrôle des sentences arbitrales [The increasing recognition of the estoppel principle in the review of arbitral awards], 2008(2) REV. ARB. 325


  • Institut des Hautes Etudes Internationales (Panthéon), Certificat de recherches approfondies (CRA)
  • University of Paris II Panthéon-Assas, D.E.A. Droit International Public and Master Droit International



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