Tel. (direct) : +32 10 41 72 97
Fax : +32 10 42 72 92


Alain Costantini

Alain Costantini graduated from the University of Louvain in 1992.
He joined Dear Krzewinski & Willez as partner in May 2014.

Previously, Alain worked with Allen & Overy LLP and with Bird & Bird LLP, where he was a partner for 11 years.

His main areas of expertise is in mergers and acquisitions, joint ventures, private equity, venture capîtal and commercial agreements, offering a full scope of legal services, from advice to litigation. He has also developed a practice centred on corporate restructuring and insolvency.

Alain has significant experience with trade federations and lobbying associations. He is an associate member of the Federation of European and International Associations established in Belgium (FAIB) –

Alain is a member of the Bar of Brabant Wallon and the Brussels Bar.
He is fluent in French, Dutch and English.


  • « Alain did a wonderful job advising FEFANA on the revision of our Articles of the Association. I can highly recommend his service. » Jörg Seifert (Secretary General at FEFANA)
  • « Alain is highly accomplished when it comes to advising European trade associations on all issues related to internal governance and has been a great legal support in my association work over the years. Highly recommended. » Katarina Molin (Executive Director at SELDIA)
  • « Trusted advisor is not an exaggeration with Alain. I’ve had the pleasure of working with him for several years. He consistently delivers high quality and pragmatic immediately useful advice. He’s also a fierce litigator and not afraid of tackling difficult battles. I particularly recommend him for corporate law and all matters relating to non-profits. » Marie Petre (General Counsel at GS1)


  • « The new liability regime of directors in the New Belgian Companies and Associations Code”, presentation given in the framework of the seminar “The new Belgian Companies and Associations Code; which consequences for your clients?”, Artelegis, 20 June 2019, (with C. KRZEWINSKI & O. WILLEZ, in co-operation with the notaries Nicaise, Colmant & Ligot).
  • Anti-money laundering and UBO register: practical aspects of attorneys’ obligations, 5 à 7 déontologique du Barreau du Brabant wallon, 3 April 2019 (with J. DELPLANCHE).
  • The reform of the Belgian corporate/ associations code – New liabilities of directors of associations, European Association Summit, Brussels, 28 February 2019.
  • Practical implications of the insolvency reform on associations, lecture given for the FAIB, Brussels, 19 February 2019
  • The company and association law reform, Conférence du Jeune Barreau du Brabant wallon, 14 December 2018 (with J. DELPLANCHE).
  • Merger of associations, lecture given for the FAIB at Radisson SAS Hotel, Brussels, 19 May 2016
  • « Acquisition of a SME – contractual aspects of the sale of an undertaking», seminar Info-Topics, 9 May 2014, Limelette


  • « The new Belgian Companies and Associations Code: how to adapt the Articles of Association of your INPA », FAIB News (n° 116), 2019 (with J. DELPLANCHE).
  • « Summary of FAIB Lunch-debate of 19 February 2019: “Reform of the legislation on the insolvency of associations” », FAIB News (n° 115), 2019.
  • « Impact of Brexit on your Articles of Association », FAIB News (n° 114), 2018 (with J. DELPLANCHE)
  • « New requirement imposed by the commercial Court of Brussels when filing extracts for publication », FAIB News (n° 113 & 115), 2018 (with J. DELPLANCHE)
  • « Insolvency reform and its impact on associations », FAIB News (n° 111), 2018 (with J. DELPLANCHE)
  • « Revision to the EU Posted Workers Directive : what do you need to know? », FAIB News (n° 110), 2018 (with S. GHISLAIN)
  • « European political parties and European political foundations (modification of the act of 1921) », FAIB News (n° 108), 2017 (with J. DELPLANCHE)
  • « The Law for the Future: major implications for associations », FAIB News (n° 106), 2016 (with J. SALTEUR)
  • « Extracts of the Crossroads Bank for Enterprises in English soon available », FAIB News (n° 104), 2016 (with J. DELPLANCHE)
  • « Good news! Crossroads Bank for Enterprises “CBE” extracts soon available in English? », FAIB News (n° 103), 2016
  • « New requirements of the Commercial Court of Brussels for the publication of documents of non-profit organisations », FAIB News (n° 99), 2015
  • « Identification requirements of non-profit organisations by financial institutions », FAIB News (n° 98), 2014
  • « Some recent changes with the services of the Commercial Court of Brussels », FAIB News (n° 97), 2014
  • « Social contingencies for non-profit organisations », FAIB News (n° 96), 2014