Home / People / Martika Jonk

Martika Jonk


Atrium - Parnassusweg 737
1077 DG Amsterdam
PO Box 94700
1090 GS Amsterdam
Languages German, French, English, Dutch

Martika Jonk is a member of the Corporate/M&A Practice Group. She assists mainly international clients with mergers, share and asset acquisitions and re-organisations.

Martika also advises on a broad range of corporate and commercial matters.

Martika Jonk was resident partner of the Berlin office of CMS from 1992 to 1997. She was admitted to the Bar in Berlin in 1995 and has acted as legal counsel in many Dutch-German cross-border transactions. She has also worked in Boston, MA, as a foreign legal consultant. Her knowledge of both civil and common law makes Martika a good choice when it comes to advising US and other clients from common law jurisdictions who are doing business in the Netherlands.

Industry focus: Oil & Gas.

more less

"Partner Martika Jonk has a focus on the upstream oil and gas industry advising on corporate matters and related regulatory issues. "

The Legal 500, 2019

'Outstanding' oil and gas expert Martika Jonk is 'recommended without reservations'.

The Legal 500, 2018

Martika Jonk is admitted to the Berlin Bar and acts as legal counsel in several Dutch-German cross-border transactions.

Chambers Global, 2018

Martika Jonk heads the firm's German desk out of Amsterdam and is a key contact for clients.

Chambers Global, 2018


  • New Board Program , Nyenrode Business University
  • Property Law , Grotius Academy for Post-Graduate Law Studies
  • Dutch Law, University of Amsterdam
more less


  • Supervisory board of Heijmans
  • Supervisory Catharina Hospital Eindhoven
  • Supervisory board of Gasunie
more less


Show only
Top rank­ings CMS in The Leg­al 500 EMEA 2019
15 Sep 17
4 TSO's join forces for North Sea Power Hub
Dutch state owned Gasunie has joined the con­sor­ti­um of Dan­ish En­er­ginet.dk and Dutch and Ger­man Ten­neT to study the pos­sible de­vel­op­ment of a wind power hub in the North Sea. The power hub will con­sist...
CMS has ad­vised DEKRA S.E. on the ac­quis­i­tion of the...
07 Mar 17
Forth­com­ing amend­ments to en­ergy Codes to fa­cil­it­ate plur­al sup­pli­ers...
On 27 Feb­ru­ary 2017 the Dutch en­ergy reg­u­lat­or ACM pub­lished a con­sulta­tion pa­per on the amend­ment of the en­ergy Codes to fa­cil­it­ate the ap­point­ment of more than one sup­pli­er and/or pro­gram re­spons­ible...
CMS rank­ings in The Leg­al 500 EMEA 2018
13 Jul 16
Leg­al de­vel­op­ments in off­shore wind en­ergy in the Neth­er­lands; part...
Second tender Borssele III & IV With the res­ults of the first tender only be­ing an­nounced last week, the Dutch gov­ern­ment has already an­nounced the open­ing of the next round later this year. Bids for...
CMS suc­cess­fully ad­vises Part­ners Group on its in­vest­ment...
4 TSO's join forces for North Sea Power Hub
CMS ad­vised Cooper­Vi­sion Inc. on the ac­quis­i­tion of...
Dutch Gov­ern­ment opts for prag­mat­ic solu­tion in re­ac­tion...
CMS ad­vised Naut­ic Part­ners, LLC on its ac­quis­i­tion...
Forth­com­ing amend­ments to en­ergy Codes to fa­cil­it­ate...