Firm Profile > Stek > Amsterdam, Netherlands

Leidseplein 29
1017 PS Amsterdam

Energy: regulatory Tier 1

Stek's energy and utilities team is recognised for its 'extensive knowledge and experience on energy law/regulatory' and has considerable strength in energy regulatory litigation. The team not only acts for all major electricity and gas distribution companies in the Netherlands in regulatory matters and represents them before the Dutch regulatory authority in the Administrative High Court for Trade and Industry, but also players in the oil and gas, wholesaler and supplier areas. Practice head Jan Erik Janssen is a 'legal authority'.

Practice head(s):


They have an in-depth knowledge of energy law, creative in their thinking and quick to respond. Excellent team to work with.

Highly experienced, knowledgeable and good feeling for their customers. Always successful.

The team has extensive knowledge and experience on energy law/regulatory. To me they act as a knowledge- and sparring partner/litigator. They continue to strengthen/deepen the relations with our company and colleagues. This is much appreciated.

Professional and excellent communication skills.

Jan Erik Janssen stands out due to his exceptional knowledge of energy law/regulatory and his creative mindset through which he finds solutions that fit us best. He is a warm personality, to the point, explains difficult subjects in an easy manner and welcomes feedback.

Patou Courtens, extraordinary lawyer, stands out due to her thoroughness and accuracy. She is a good listener and has a modest appearance, however in court she is sharp and passionate if necessary.

Jan Erik Janssen is a legal authority in the Netherlands when it comes to energy related practises. He and his team provide advice on transactions, compliance and regulatory matters.

Key clients







Netbeheer Nederland



Tata Steel

Energy: transactional Tier 2

Noted for delivering 'actionable advice', Stek puts together a 'highly efficient and knowledgeable team.' The team's workload in the energy sector includes commercial, corporate, M&A, projects and project mandates for energy companies, financial institutions as well as funds. Reijnoud Homveld and 'great to work with' Jeroen Timmermans lead the energy transactions practice group together.


Highly efficient and knowledgeable team. Always well prepared for calls and meetings and very communicative to clients and other parties involved.

‘Claudia Beele – sharp and pragmatic. Great communicator.’

More than other firms Stek delivers actionable advice. They probably would compete with others in terms of legal knowledge but the practical approach is of tremendous value to me as a client.

Jeroen Timmmermans –  senior partner but very hands-on and involved. Great to work with and actually get things done in short amount of time.

Key clients






ASN Bank

YARD Energy


Dana Petroleum


Budget Energie


Limburgs Energie Fonds

Nationaal Groenfonds






Slovenske Elektrarne




Spirit Energy


MHI Vestas

Zenith Energy




Transport Tier 2

Stek's 'very responsive' aviation team provides all-round advice on the sector, specialising in multi-jurisdictional transactions relating to the lease, acquisition, sale and financing of aircraft and flight simulators. 'Very knowledgeable' team head Jeroen Timmermans acts for high-profile domestic and international clients, including Vueling and Atlas Air. Among several matters in 2019, he advised Mass Capital on the sale of two aircraft engines to Qantas. The practice also has experience in litigation, representing Corendon since 2017 in legal proceedings against Schiphol airport regarding slot allocation and airport charges. Laetitia Kunst is noted for her 'impressive depth of knowledge' managing aircraft sale and lease transactions.

Practice head(s):


The Stek team are very responsive and provide sound commercial advice.

Laetitia Kunst-den Teuling has an impressive depth of knowledge and experience on managing aircraft sale and lease transactions.

High quality of legal work; excellent availability and flexibility.

Jeroen Timmermans; very knowledgeable, available whenever needed.

Marjolein Paulus: very responsive.

Key clients

TrueNoord Holdings

Mass Jet Lease

Mass Capital

Vueling Airlines

Netherlands Aircraft Company

Panta Holdings

Atlas Air

Corendon Dutch Airlines

Banking and finance: lender or arranger side Tier 3

As well as assisting with acquisitions and leveraged finance, Stek's team, which stands out for its 'commercial' approach and 'good sense of judgement', also advises on general corporate lending and asset-based financing. Sharon Kaufmann advised longstanding clients ABN Amro and BNG Bank on the €95m financing of Stichting de Opbouw, which provides care for the elderly and disabled, showcasing the team's particular focus on the healthcare sector. Herman WamelinkFrans Haak and Maarten van der Graaf, who is 'a real pleasure to work with', jointly head the team with Kaufmann.


Incredibly easy to deal with, commercial and user friendly, good sense of judgement as to which key issues need to be escalated.

Maarten van der Graaf (Partner) and Bianca Mwangi (Associate) are a real pleasure to work with.’

Key clients



ING Bank

Deutsche Bank


BNG Bank

BNP Paribas SA

Silicon Valley Bank

Export Import Bank of India

Dispute resolution: Commercial litigation Tier 3

At Stek, the dispute resolution team is particularly notable for its integrated competition litigation practice, which has seen significant recent instructions in the field of follow-on damages litigation, representing both defendants and claimants in several large matters. Practice co-head Jan Bart van de Hel focuses on financial litigation and director's or professional liability cases, and is 'a very clever, bright, calm, litigator who stands out in court', according to clients. Van de Hel's fellow co-head Gerben Smit has particular strengths in contract law and tort disputes, covering a wide range of sectors including transportation, leisure, retail, finance, and industry.


Jan Bart van de Hel is a very clever, bright, calm litigator who stands out in court while pleading as well as in drafting of litigation papers. He is pleasant to work with and very good in his communication with the client.

Key clients

Samsung SDI


Atlas Air

Corendon Airlines



Thomas Cook


Credit Europe Bank

EU and competition Tier 3

Stek displays strong antitrust litigation experience with a robust knowledge of EU and competition law. The firm's clientele includes Samsung SDI, L’Oréal, and Simpel. Berend Reuder and Ruben Elkerbout are joint heads of the competition team and Jan Erik Janssen leads the regulated markets team. Also noted is Mattijs Baneke, an 'impressive associate'.


Stek have a very constructive approach and are easy to work with.  They are responsive and helpful on cases‘.

Partner Berend Reuder stands out in his ability to quickly form a (pragmatic) game plan to draft and submit the filing; short communication lines and frequent updates on progress allow clients to have a good notion on the status of the filing. His experience and expertise in this field provides comfort in the chosen approach and obtaining the desired outcome‘.

Ruben Elkerbout is a very practical lawyer that understands business. He will approach a project with sincere attention for the business needs‘.

Mattijs Baneke is an impressive associate‘.

Key clients





Thomas Cook



Private equity Tier 3

Stek's private equity practice is jointly led by Eelco Bijkerk, Ruben Tros and Maarten van der Graaf. Noted for its focus on mid-market transactions in the Netherlands, the firm has a strong profile among Dutch private equity funds, portfolio companies and management teams. It draws upon strengths in multiple disciplines to cover a wide ambit of transactional and operational matters for clients; areas of expertise include corporate, finance, dispute resolution and competition. The varied work includes investments in new portfolio companies, add-on acquisitions, finance transactions and refinancings, and general commercial issues. Ruben Tros and Maarten van der Graaf are names to note.


‘They build trust and are in control of the process, thereby enabling the whole transaction team involved to anticipate on potential issues before they arise’.

‘Very strong technical and commercial advice which is presented in a concise and responsive manner’.

‘Ruben Tros is an excellent lawyer who confidently takes the lead during due diligence and sell-side negotiations. He is creative and flexible in dealing with transaction obstacles and a very pleasant person to work with.’

Key clients

Bencis Capital Partners

NIBC Mezzanine & Equity Partners


Velocity Capital

Fintech Ventures

Rotterdam Port Fund

Capital A Investment Partners

Apax Partners

Brockwell Capital Limited


Imker Capital Partners

Smart Impact Investments

Project finance and PFI Tier 3

Stek is predominantly active on the lender side of project financing work and advises large Dutch banks and public funds on the financing of a wide range of projects. Key areas of work include telecoms infrastructure projects including fibre roll-outs, privately funded green energy projects and those with an element of public funding, and refinancing matters. The team is jointly led by Herman WamelinkSharon Kaufmann and Reijnoud Homveld.

Key clients

BNG Bank N.V.

Coöperatieve Rabobank U.A.


Volksbank N.V. trading as ASN Bank

Limburgs Energie Fonds

Amsterdams Klimaat & Energiefonds

Nationaal Groenfonds


Banking and finance: Borrower side Tier 4

Stek houses a finance practice which is strong on acquisition and leveraged financing, financing work in the health and energy sectors, and local counsel work for high-profile international law firms and large corporates. Key lawyers include Maarten van der GraafFrans HaakSharon Kaufmann, and Herman Wamelink.


Stek’s team is great and very commercial. All team members are extremely responsive and helpful always trying to get to the nature of an issue and have it quickly resolved.

People at Stek are result- and quality-oriented, always trying to meet committed deadlines.

Key clients





Postillion Hotels

Dynniq Group


Commercial, corporate and M&a Tier 4

Eelco BijkerkDierik Cras and Maarten van der Graaf are senior members of the team at Stek, who advise private equity houses, financial institutions and corporates across a broad range of sectors on mergers, acquisitions, restructurings and other corporate law issues. The group also works with international firms on cross-border mandates. Rim Roomberg joined as senior associate from De Brauw Blackstone Westbroek.


An excellent team with the experience of a tier 1 international firm, but with the accessibility and partner involvement of a smaller independent firm.’

Key clients

Condor Corporate Finance/ Panta Holdings


Nuon / Vattenfall

Wrist Ship Supply




SK FireSafety Group

DentConnect / Curaeos



IMS Health

Danone / DanTrade

Duvel Moortgat

Zenith Energy

Neenah Paper



The firm: Stek is an independent Dutch law firm. The firm was launched in 2005, combining expertise from leading international law firms and high-profile in-house positions. Stek brings this expertise and professionalism together in a leaner, smaller, direct and more approachable package. Stek distinguishes itself through excellent service via a focused, hands-on, personal approach. The firm prides itself in having assembled a top team of lawyers with in-depth legal and sector expertise and commercial awareness with a ‘can-do’ service attitude.

Stek’s partners have ample experience in co-ordinating cross-border projects. The firm has become a trusted partner for referral work of leading foreign law firms. Stek does not belong to any formal network, alliance or association.

Areas of practice: Stek provides legal services in four practice areas: corporate, dispute resolution, finance and competition and regulated markets.

For other specialist areas, Stek offers its clients an integrated, transparent solution by augmenting its own resources with its proven network of external specialists who have been carefully selected to operate at the same level of excellence as its own staff.

Corporate: Stek assists its clients in all types of corporate matters, such as M&A, joint ventures, restructuring, private equity and corporate governance. The firm’s commercial work includes all types of commercial contracts. In addition the firm has a strong niche in aviation and energy, and counsels on Dutch Caribbean law.

Dispute resolution: Stek represents its clients in administrative and civil courts, in arbitration and in alternative dispute resolution proceedings. Its lawyers have considerable experience in devising effective means of dispute resolution and avoidance of litigation.

Finance: Stek represents financial institutions and corporate clients regarding all aspects of domestic and international financial transactions, from syndicated lending to acquisition finance and trade finance transactions, and from structuring investments to providing advice on restructuring and insolvency law transactions and regulatory and compliance issues.

Competition and regulated markets: Stek assists its clients with the full range of European and Dutch competition and regulatory matters. The firm is a market leader in the energy sector, and has strong expertise in other regulated markets, such as agri-food, health care, aviation and water. Its lawyers represent companies before various competition authorities, regulators, policy makers and in court.

Department Name Email Telephone
Aviation Laetitia Kunst
Aviation Jeroen Timmermans
Competition and regulated markets Stephanie Dielemans
Competition and regulated markets Ruben Elkerbout
Competition and regulated markets Jan Erik Janssen
Competition and regulated markets Berend Reuder
Corporate Eelco Bijkerk
Corporate Dierik Cras
Corporate Maarten van der Graaf
Corporate Reijnoud Homveld
Corporate Jasper Stek
Corporate Jeroen Timmermans
Corporate Ruben Tros
Dispute resolution Dierik Cras
Dispute resolution Stephanie Dielemans
Dispute resolution Ruben Elkerbout
Dispute resolution Jan Bart van de Hel
Dispute resolution Jan Erik Janssen
Dispute resolution Gerben Smit
Dispute resolution Jasper Stek
Energy and natural resources Reijnoud Homveld
Energy and natural resources Jan Erik Janssen
Finance Maarten van der Graaf
Finance Frans Haak
Finance Sharon Kaufmann
Finance Herman Wamelink
Private equity Eelco Bijkerk
Private equity Reijnoud Homveld
Private equity Ruben Tros
Public law Stephanie Dielemans
Public law Jan Erik Janssen
Photo Name Position Profile
Mr Mattijs Baneke  photo Mr Mattijs Baneke Mattijs Baneke is an attorney in the Competition & Regulated Markets group of Stek. Mattijs…
Mr Merijn Batteram  photo Mr Merijn Batteram Merijn is an associate in Stek´s finance department.He advises financial institutions and…
Ms Claudia Beele  photo Ms Claudia Beele Claudia is a senior associate in Stek’s corporate group. She advises clients…
Mr Eelco Bijkerk  photo Mr Eelco Bijkerk Eelco is a specialist in corporate law. He advises private equity firms,…
Ms Linde Bremmer  photo Ms Linde Bremmer Linde Bremmer is a senior associate in our Competition & Regulated Markets…
Mr Dierik Cras  photo Mr Dierik Cras Dierik is partner and active in corporate and commercial transactions and advice,…
Ms Stephanie Dielemans  photo Ms Stephanie Dielemans Stephanie Dielemans is a regulated markets and energy law expert and joined…
Mr Ruben Elkerbout  photo Mr Ruben Elkerbout Ruben Elkerbout is partner in our Competition & Regulated Markets team. He…
Mr Frans Haak  photo Mr Frans Haak Frans Haak is a partner in Stek’s finance group. He specialises in…
Mr Max Hetterscheidt  photo Mr Max Hetterscheidt Max is a senior associate in the corporate and commercial litigation department…
Mr Reijnoud Homveld  photo Mr Reijnoud Homveld Reijnoud is a partner in Stek’s corporate group and has ample experience…
Mr Jan Erik Janssen  photo Mr Jan Erik Janssen Jan Erik is a partner at Stek and has ample experience in…
Ms Sharon Kaufmann  photo Ms Sharon Kaufmann Sharon Kaufmann is a partner in Stek’s finance group. She specializes in…
Mrs Laetitia Kunst  photo Mrs Laetitia Kunst Laetitia assists clients in the full range of aviation activities in the…
Ms Bianca Mwangi  photo Ms Bianca Mwangi Bianca Mwangi is an associate in our finance group, specialising in finance,…
Mr Berend Reuder  photo Mr Berend Reuder Berend Reuder is partner in the practice group Competition and Regulated Markets.…
Mr Michaël Rijnja  photo Mr Michaël Rijnja I advise public and private companies, private equity clients and entrepreneurs on…
Mr Gerben Smit  photo Mr Gerben Smit Gerben is a every inch a litigator who stands out because of…
Mr Jasper Stek  photo Mr Jasper Stek Jasper is a partner in Stek’s corporate and commercial team. He represents…
Mr Jeroen Timmermans  photo Mr Jeroen Timmermans Jeroen specializes in corporate and finance transactions, with a special focus on…
Mr Ruben Tros  photo Mr Ruben Tros Ruben is a partner in Stek’s corporate group and has ample experience…
Ms Stéphanie Verhelst  photo Ms Stéphanie Verhelst Stéphanie Verhelst is an associate in Stek’s finance group, specialising in finance,…
Mr Herman Wamelink  photo Mr Herman Wamelink Herman Wamelink is a Partner in Stek’s finance group, specialising in large…
Mr Jan Bart van de Hel  photo Mr Jan Bart van de Hel Jan Bart is an expert in commercial and corporate dispute resolution. His…
Mr Maarten van der Graaf  photo Mr Maarten van der Graaf Maarten is a partner at Stek and focuses on corporate and finance…
Number of lawyers : 48