We Are a Trusted Advisor to Global Business and Financial Leaders
L&K ADVISORY • Strategy Finance Economics
We provide economic and financial advisory services to support our clients’ transactions and ensure their long-term success
Who We Serve
We provide expert advisory services to a wide range of clients, each with unique needs and objectives. Our clients include:
Companies
We assist businesses across various industries in navigating complex transactions, providing strategic advice and financial insights to drive growth, innovation and optimize capital allocation.
Law firms
We support tax and legal professionals in structuring transactions, conducting due diligence, and ensuring compliance with regulatory requirements.
Consulting firms
We collaborate with consulting firms to offer specialized knowledge and enhance their service offerings, enabling them to deliver comprehensive solutions to their clients.
Investment funds
We provide critical analysis and strategic guidance to investment funds, helping them make informed investment decisions and optimize their portfolios.
Government agencies
We partner with government entities to advise on policy development ensuring public interests are met with efficiency and effectiveness.
Our Expertise
We have developed comprehensive expertise in a wide range of business contexts:
Capital Raising
Private Equity
Restructuring
Mergers & Acquisitions
Post-Merger Integration
Joint Ventures
Corporate Development
Business Development
Transfer Pricing
Benchmarking
Our Approach
Each project shapes our team and refines our processes. We bring together top professionals in business, economics, and finance, each with hands-on experience in various transactional issues. Our agile approach allows clients to access a diverse pool of high-end talent and critical expertise, fostering impactful partnerships.
About our Founder and Managing Partner
Jean-Sébastien Lénik
Jean-Sébastien Lénik has 25 years of experience in economics and finance, shaping transactions as a trusted advisor. After earning Master’s degrees from the Robert Schuman Faculty of Law & Political Science and McGill Law School, he was admitted to the French Bar and began his career as a lawyer in Paris.
He then joined Arthur Andersen, KPMG, and NERA Economic Consulting, where as Vice President and Lead Partner, he established and expanded the firm’s presence in continental Europe. Jean-Sébastien also held senior positions at Sanofi during the Sanofi-Aventis merger and earned an Executive Education Degree in Finance from INSEAD during his tenure.
More recently, he co-founded and served as Managing Partner at ALCEA ADVISORS, a management company specializing in investments in Health & Life Sciences, and pursued a specialization in systems biology and biotechnology at the Icahn School of Medicine.
Jean-Sébastien’s expertise spans capital raising, restructuring, M&A, post-merger integration, joint ventures, corporate development, business development, and transfer pricing. He specializes in developing policy and strategic insights to inform executives’ decisions and optimize capital allocation. His multidisciplinary background in law, economics, and finance has proven to be a key enabler in leading and executing cross-functional engagements.
Jean-Sébastien also serves as an independent expert with the European Commission Executive Agency for Small & Medium-sized Enterprises (EASME).
A Word from Our Founder
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The key to any relationship is trust. Clients come to us because they trust us. They stay with us because we deliver independent, innovative, and actionable solutions to help them thrive over the long term. These core values inspire our day-to-day commitment to our clients and to our broader ecosystem.
Jean-Sébastien Lénik, Founder and Managing Partner