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A TRULY
ENTRE
PRENEURIAL
TEAM

Stern Stewart & Co. was founded in New York City in 1982 by Joel M. Stern and G. Bennett Stewart III, New York City blood still runs in our veins. As our founders demanded, we don’t hire consultants but only future partners. Today all team members are shareholders of our firm. Truly entrepreneurial from day one.

New York
City blood
in our veins

Our advice is based on rigorously independent thinking. Fostering disagreement and innovative ideas - genuinely out of the box. Our team works on consulting projects, as interim managers for our clients, and for our own companies. We always advise and act as if it were our own firm.

Independent Minds

Markus Pertl

Entrepreneur in both the business and the non-profit world


Markus believes in creating a striking impact by working with and by connecting outstanding people.

Markus is managing partner of Stern Stewart & Co. and chairman of the Stern Stewart Institute and of Stern Stewart Industries. He served as board member of both a large industrial company and a deep-tech start up.

Dimitri Belobokov

Operations expert with a track record in performance

Dimitri leads complex operational optimization projects in manufacturing. He combines deep production and supply chain with finance and data analytics know-how to realize substantial improvements with fast financial benefits.

He also serves as a non-executive director of a global commodities trader.

Robert Dominovic

Transforming for future readiness


Robert leads complex transformations and guides organizations through critical change.

With deep restructuring expertise and a pragmatic, results-driven mindset, he enables businesses to adapt quickly and build lasting resilient operating models.

Daniel Fischer

Turnaround leader with hands-on impact


Daniel drives strategy, restructuring, and performance programs with full commitment.

Known for making things happen, his track record includes transforming a struggling manufacturer into a fast-growing solution provider.

Moritz Fliescher

Strategic all-rounder for fast and lasting impact


Moritz leads M&A projects, carve-outs, and governance redesigns with a pragmatic mindset and sharp strategic view.

He brings a fresh perspective and a strong, independent opinion to his projects, challenges ideas, and ensures real change happens quickly.

Dr. Markus Haupenthal

Sharp strategist and tenacious implementer


Markus turns strategy into results, being known for his hands-on mentality and ability ensure end-to-end project success.

With his hands-on leadership in transformations, transactions, and restructurings, he gets the job done - especially in complex industrial settings.

Stefan Heppelmann

Creative mind for transformation and turnaround


Stefan is a independent thinker with over two decades of consulting experience and deep corporate finance expertise (CFA).

Known for bold ideas in complex restructuring and transformation situations, he shapes organizations and executive agendas.

Ralph Hesse

A sharp strategist with an eye for impact


Ralph combines analytical precision with creative thinking. For 15+ years, he has driven strategy, M&A, and transformation projects - always focusing on real business impact.

He masters complexity, shapes organizations, and never loses sight of the big picture.

Ashley Joffe

Transaction facilitator with true (ad)venturousness


Ashley blends financial depth with operational instinct. With 20+ years of global experience, he has led major deals across six continents.
He is also Director of Stern Stewart Industries and serves as CEO of Premier Commission.

Milan Manduch

Restructuring and transformation ace


Boldness meets rationality in Milan, who has 20 years of experience in organizational transformation and restructuring.

His independent opinion is invaluable in shaping business models, efficiency programs, and navigating complex turnarounds.

Marcus Middelmann

Trusted partner for distinctive business transformations


For over 20 years, Marcus has led holistic transformations for corporates and family businesses.

He served as interim CXO in multinationals and as board chairman. His visionary moves and implementation excellence are invaluable to top executives across the globe.

Gerhard Nenning

Out-of-the-box strategy advisor and facilitator of organizational change


Gerhard is a fearless strategy visionary and has shaped game-changing M&A and growth strategies, challenging organizations and their norms and unlocking new horizons for struggling businesses.

As co-founder of The Stern Stewart Institute, he sparks visionary dialogue among top leaders.

Olaf Paltian

Sharp strategist for results under pressure


Olaf excels in M&A deals, restructurings, and large-scale transformations across various industries in Europe, North America and Asia-Pacific.

Moreover, Olaf successfully reshaped his client’s corporate strategies with so far untapped additional profitable growth potentials.

Carlo Paoloni

Dealmaker with a passion for strategic transactions


Carlo brings extensive corporate finance expertise with roots in M&A at top-tier investment banks.

From carve-outs to VCPs and PMI - with deep hands-on knowledge of performance levers and cost control. He thrives under pressure and closing complex deals — fast and effectively.

Dr. Wulf Rendtorff

Legitimate Transformation Ace


Wulf combines legal precision with business acumen to lead complex transactions, bold transformations and tough restructurings.

25+ years’ experience - including a decade in investment banking – make him an expert in M&A, corporate finance, portfolio strategy, and business model design.

Sibo Sollors

Turnaround expert with passion for complexity


For 25+ years, Sibo has driven complex projects and shaped business models across industries – from the technology to defense development, to automotive, agriculture and aviation.

Grounded and forward-thinking, he turns bold ideas into reality.

Uta Stratmann

Automotive expert and transformation leader


Uta delivers transformation excellence in mobility and tech, focusing on cost and structure in complex restructuring or PMI situations.

She is also the Chairwoman of Computer Science at the Burkina Institute of Technology and advocate for female leadership and inclusion.

Johannes Thiemann

Independent thinker and growth facilitator


Combining an engineering background with 15+ years of strategy consulting experience, Johannes drives transformations that matter.

By working closely with his clients and their teams he secures fast strategic impact and lasting change.

Johannes Tüxen

Strategy-led. Impact-driven.


Johannes shapes and drives strategy with bold thinking and operational precision — leading transformations that stick.

From cash & cost impact to organizational change, always anchored in value. Cross-industry: electronics, automotive, industrials, tech and more.

Konstantin Wrona

Visionary in NextGen Corporations


An architect of impactful and lean organizations. Fascinated by thinking corporate DNA through.

Advising large international companies on performance and transformation programs.

We don't hire consultants.
We only hire future Partners.

Are you prepared to take on responsibility?
Advising a client when it really matters.
Thinking independently.
Taking risks when everybody else hesitates.

If you want it’s all yours.

TAKE
OFF
WITH US

JOIN OUR TEAM

A Striking Impact - for our clients and society at large.