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Aventis Advisors combines passion & experience to close a deal that’ll make you happy

Our dynamic and honest approach to M&A means you get to a better deal faster

We Care

We know a deal is more than just money changing hands. We focus on the overall well-being of our clients, both financially and emotionally, and the legacy they leave behind. We care about the future of our client’s employees and their families and what ultimately is key to every business – their customers.

Dynamic Delivery

Our goal is to provide services that can adapt to the rapid pace of change in today’s world. We can change course quickly if circumstances require us to help our clients make the best decisions. We utilize a toolbox of modern technologies and research methods to get things done promptly and efficiently.

Keeping Things Simple

We can comprehend and simplify complex situations, thus getting to the grit of things faster and with less friction. This gives us more time to be creative and develop solutions that serve our clients better.

Deep Understanding

Human attention in today’s hectic world is a scarce commodity. We have organized ourselves to give you our undivided attention in order to understand your unique set of needs, goals, and what success means to you in business and life.

Honesty & Trustworthiness

We believe the world would be better off with fewer (but better quality) M&A deals done at the right moment for the company and its owners. Our goal is to lay out all the options for our clients and provide honest, insight-driven advice.

Being Fresh & Innovative

Progress and constant improvement are what drive us. We love working with businesses and people driven by the same values. We stay up to date with the latest trends, utilize a modern technology stack, and rely on the highest quality data to give you the best advice we can provide.

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Make the right deal, at the right time, with the right people

The Aventis Team

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Marcin Majewski

Founder, Managing Partner

As the founder of Aventis Advisors, Marcin has nearly 20 years of experience in M&A and Corporate Finance.

He specializes in the Technology sector with a particular focus on Software, Business Services, and Manufacturing. During his career, he’s advised dozens of entrepreneurs and investors.

Marcin is passionate about working with diverse people and learning the fascinating histories of founders. It’s all about connecting the world of business and finance, the creativity that goes into structuring deals (as each deal is unique), and developing meaningful connections between people worldwide.

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Filip Drazdou


Filip joined Aventis Advisors in 2019. He's focused on deal execution, ensuring deals run smoothly from start to finish.

For Filip, it’s all about “cracking the case” - from figuring out whom the right buyers are to determine what a fair price would be. He loves to crunch numbers, find exciting insights, create optimal structuring, and model mutually beneficial transactions.

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Shaheer Ansari


Shaheer joined Aventis Advisors in 2023. Previously, he worked for Goldman Sachs in the Credit Risk division.

At Aventis, he supports the team with deal logistics, industry research, and business outreach and development.

Shaheer enjoys learning about different business models and how strategic transactions can unlock their hidden potential. His varied experience in finance, media, and marketing enables him to view situations from a holistic and unique perspective.

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Marceli Krenz


Marceli joined Aventis Advisors in 2024. Previously, he worked as a strategy consultant at EY-Parthenon in Stockholm and gained internship experience at Pulsen Group, Volvo Group Corporate Finance, and Vienna Capital Partners​.

He holds a Bachelor’s degree in Finance and a Master’s degree in Accounting from Gothenburg University, Sweden.

In-depth research, unique insights & total honesty

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An agile approach to M&A

We apply agile principles, acting collaboratively and iteratively to deliver a faster, smoother deal.

Data and intuition-driven

Focused on results and effectiveness, we base decisions on combining analytical information and intuition.

Big picture point of view

We look at every deal from different angles and look for long-term sustainable benefits for all involved.

Freedom to be open and honest

We can afford to tell it like it is. Our independence means we offer honest advice & frank feedback.

Globalscope Partners

With over 30 years of global M&A experience across all continents, Globalscope is 55 independent, successful firms with over 10,000 private company deals completed. This track record illustrates our ability to reach investors and access targets all over the globe.

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Make informed decisions about raising capital, selling your company, or buying a business

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