Armand W. Grumberg

Armand W. Grumberg

Partner, Mergers and Acquisitions
Armand W. Grumberg is the head of Skadden’s European Mergers and Acquisitions practice and the leader of the firm’s Paris office. He has extensive experience in strategic and complex cross-border transactions, including public and private acquisitions, contested and hostile bids, joint ventures, corporate reorganizations, and capital markets transactions.


Mr. Grumberg also has significant experience in shareholder activist-related matters. Prior to joining Skadden in 2003, he practiced law in the New York, London and Paris offices of another leading international law firm.

Mr. Grumberg repeatedly has been recognized as a leading individual in Who’s Who Legal, Chambers Global, Chambers Europe, The Legal 500 EMEA, IFLR1000 and Best Lawyers as a leading individual in corporate/M&A in France. In 2021, he was ranked by Forbes and La Lettre des Juristes d’Affaires as a Top Lawyer of the CAC 40. He also was named Leader of the Year in M&A - Paris, France at Corporate America Today’s Annual Awards 2021; M&A Lawyer of the Year at the Leaders in Law Global Awards 2021; Contested and Hostile Bids Expert of the Year in France – 2021 and Public and Private Acquisitions Expert of the Year in France – 2021 by CorporateINTL; Deal Maker of the Year by Finance Monthly Magazine’s 2020 and 2019 Awards; Mergers & Acquisitions Lawyer of the Year – France by Global 100 in 2020 and 2019; Leader of the Year in M&A - France by Corporate America Today’s Annual Awards 2020; M&A Lawyer of the Year – France by Corporate Insider’s 2019 Business Excellence awards; M&A Lawyer of the Year by Lawyer Interna­tional Limited’s Global Awards 2019; and Lawyer of the Year (Complex M&A) by ACQ5’s Global Awards 2019.

Transactions in which he has acted include:

  • Air France-KLM in connection with corporate and governance matters relating to the €4 billion recapitalization measures approved by the European Commission in April 2021;
  • LVMH Moët Hennessy Louis Vuitton S.E. in connection with its US$15.8 billion acquisition of Tiffany & Co.; 
  • Renault in the proposed (but withdrawn) €32.6 billion 50/50 merger transaction with Fiat Chrysler Automobiles; in connection with matters relating to the Renault–Nissan–Mitsubishi Alliance; in its US$1.3 billion strategic acquisition of a 25 percent stake in AvtoVAZ; and Renault V.I. in the combination of its bus business with Iveco;
  • SCOR in numerous transactions, including its successful defense against a €8.3 billion unsolicited takeover proposal from COVEA; its defense against claims made by the activist fund CIAM; the equity investment by COVEA; the equity investment by Sompo; its acquisition of a controlling interest in Presses Universitaires de France; its US$750 million acquisition of Generali U.S. and its acquisition of a controlling stake in MRM; its CHF315 million perpetual subordinated notes and cornerstone investment in the IPO of PICC Group; its US$912.5 million acquisition of Transamerica Re’s mortality business from Aegon and its CHF625 million perpetual fixed-to-floating rate step-up notes; its €150 million contingent capital equity line; its sale of its stake in Gecimed; its CHF3.3 billion acquisition of Converium Holding AG (the first successful unsolicited takeover bid ever in the reinsurance industry) and the creation of three Societas Europaea (including the first publicly listed SE in France); its €605 million acquisition of Revios, €377 million rights offering, €350 million deeply subordinated notes offering and spin-off of its non-life reinsurance activities to SCOR GLOBAL P&C; its €232 million rights offering and acquisition of a 46.65 percent stake in IRP Holdings Limited from Highfields Capital for €183.1 million; its €200 convertible-exchangeable bond (OCEANEs) offering; and its group reorganization, including its €751 million rights offering and the spin-off of its life reinsurance activities to SCOR VIE;
  • Dassault Systèmes in its US$5.8 billion acquisition of Medidata Solutions, Inc.; 
  • Westfield Corporation in its combination with Unibail-Rodamco SE, creating the world’s premier developer and operator of flagship shopping destinations, with the new group’s stapled securities listed on the Euronext Paris and Amsterdam. The transaction implied an enterprise value for Westfield Corporation of US$24.7 billion;
  • Capgemini in numerous transactions, including its sale of Odigo to Apax Partners; its US$4 billion acquisition of IGATE; its acquisition of Euriware from Areva; the BRL321 million sale of a 22% stake of its Brazilian subsidiary CPM Braxis to Caixa Econômica Federal; its €233 million acquisition of a 55% stake in Brazilian IT services company CPM Braxis; its acquisition of the Latin American financial shared services operations of the Unilever Group; its €507.2 million capital increase, US$1.25 billion acquisition of Kanbay and acquisition of a 51% interest in Indigo from the Unilever Group; and its US$12.1 billion acquisition of the consulting business of Ernst & Young;
  • Auchan Retail S.A. on the acquisition of a 36.16 percent stake in its Hong Kong-listed subsidiary Sun Art Retail Group Ltd. by Alibaba Group Holding Limited for US$2.88 billion;
  • Nokia in its combination, through a €15.6 billion public exchange offer, with Alcatel-Lucent;
  • Stryker Corporation in connection with its €183 million acquisition of Vexim, a French-listed company, through the acquisition of a controlling stake from its main shareholders and certain managers, followed by a cash tender offer and a subsequent public buyout offer followed by a squeeze-out;
  • Daimler in its disposals of certain dealerships in France in connection with Daimler’s strategic plan for its distribution network;
  • Austrian investor Torger Christian Wolff in several transactions, including its sale of a minority stake in Williams Grand Prix Holdings and of a minority stake in HWA AG; its acquisition of a significant minority stake Mercedes-Benz Grand Prix Ltd., the company operating the Mercedes F1 team; Williams Invest Holdings (an investment vehicle owned by Mr. Wolff) in connection with the IPO of Williams Grand Prix Holdings; and its acquisition of a minority stake in Williams F1;
  • Austrian insurer UNIQA in its sale of a portfolio of 54 U.S. and European private equity fund interests to a number of secondary and institutional international buyers;
  • Yves Rocher Group in the acquisition of a 19.3 percent stake in Yves Rocher SA from Sanofi;
  • Kering (ex-PPR) in its €1.2 billion sale of Conforama to Steinhoff, and in Gucci Group’s acquisition of a stake in Alexander McQueen;
  • Matmut Group in its strategic partnership with La Banque Postale relating to credit offers and lenders’ insurance;
  • Arcelor in its defense against a hostile takeover bid from, and its subsequent acquisition by, Mittal Steel for €27 billion;
  • Fournier Pharma and its shareholders in Fournier Pharma’s €1.2 billion acquisition by Solvay;
  • Quiksilver in its €240 million acquisition of Skis Rossignol;
  • Goldman Sachs, Morgan Stanley and Rothschild, financial advisors to Aventis, in Aventis’ defense against a hostile takeover bid from, and its subsequent acquisition by, Sanofi-Synthélabo for €59 billion;
  • the French Republic and its financial advisor Société Générale in France Télécom’s tender offer for Wanadoo for €3.9 billion;
  • Royal Philips Electronics in its sale of its consumer manufacturing services division to Jabil Circuit, Inc. and its sale of its fax business to Sagem;
  • Société Générale in its proposed merger with Paribas S.A. and its defense against a hostile takeover bid from BNP;
  • Adidas in its acquisition of Salomon;
  • SITA in its acquisition of the non-U.S. assets of Browning-Ferris Industries (BFI);
  • Swisscom in its privatization;
  • The Puig Group (Paco Rabanne) in its acquisition of Nina Ricci; and
  • Swiss Re in its acquisition of SAFR from AGF and its subsequent sale to PartnerRe.

In addition, Mr. Grumberg frequently is involved in advising clients with respect to strategic cross-border or domestic litigation matters.

Mr. Grumberg lectures on topics related to his practice and is the author of various legal publications.



  • Docteur en Droit, University of Paris XII-Law School, 2001
  • LL.M., Harvard Law School, 1999
  • D.E.S.S., University of Paris V-Law School, 1996


  • Paris


  • French
  • German
  • English

Armand W. Grumberg

Partner, Mergers and Acquisitions