Our People
Practice leaders
David Pralong
The global co-leader of GSI’s Transformation Practice; helps organizations achieve a step-change in performance via holistic, rapid, and enduring transformations.
Fábio Stul
Helps organizations achieve full potential through holistic and sustainable transformations across Latin America and global markets.
Stephan Görner
Global Co-Leader of GSI’s Transformation Practice; helps organizations around the world achieve full potential through comprehensive turnarounds.
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David Pralong
The global co-leader of GSI’s Transformation Practice; helps organizations achieve a step-change in performance via holistic, rapid, and enduring transformations.
Fábio Stul
Helps organizations achieve full potential through holistic and sustainable transformations across Latin America and global markets.
Stephan Görner
Global Co-Leader of GSI’s Transformation Practice; helps organizations around the world achieve full potential through comprehensive turnarounds.
Pierre-Olivier Estève
Helps industrial companies through end-to-end transformations to reach operational excellence and digital manufacturing performance.
Yujin An
Helps clients in the energy sector by transforming the conventional business and shaping future growth in response to the global energy transition.
Ercan Balkoc
Supports private groups and public-sector organizations in the energy, industrials, and infrastructure sectors on broad scope turnarounds.
Christian Behrends
Advises software and private-equity portfolio companies about transformation, strategy, and due diligence programs.
Olivier Bernard
Leads the Transformation Practice in France, specializing in rapid corporate turnarounds and post-merger integrations.
AD Bhatia
A leader within GSI’s Transformation Practice, specializing in helping chief transformation officers, boards, and management teams unlock outsized value.
René Bienek
Partners with private capital investors, corporates, and management teams to evaluate opportunities, accelerate performance, and transform portfolios.
Chris Bradley
Leads research on global economic, business, and tech trends and works on strategic transformations for organizations across the Asia-Pacific.
Laura Bremme
Supports the leaders of pharmaceutical, generics, and medical-device companies as they set strategy, boost commercial productivity, and execute large-scale change.
Michael Bucy
Helps private and public sector organizations transform their core operations, launch new businesses, and instill long-term operational health.
Javier Caballero
Advises companies along the travel, transport, and logistics sectors on developing and executing impact-based performance programs.
Heloisa Callegaro
Managing Partner of GSI’s Brazil office; drives improvements across industries through operational agility, cultural realignment, and leadership coaching.
Jon Canto
Leader in the GSI Transformation Practice; specializes in corporate strategy, banking turnarounds, and cross-functional performance transformations.
Kevin Carmody
Leads holistic, at-scale transformations and has deep experience in corporate finance, operational turnarounds, and performance accountability.
Eren Cetinkaya
Co-leads our work in petrochemicals globally. Works with energy and chemicals clients on operational decarbonization and value acceleration.
Albert Chang
Leads our offices in Southeast Asia, partnering with clients across industries to achieve step-change performance improvements through AI and digital diligence.
Michael Chang
Bridges business and technology to help high-tech and semiconductor companies transform and enable rapid scale-up.
Oana Cheta
Leads AI-driven transformation across industries, helping retail and commercial organizations scale analytics, optimize operations, and unlock growth.
Frank Chu
Partners with clients to deliver holistic transformations that drive enterprise value. Brings deep expertise in strategy, M&A, and joint ventures.
Ryan Davies
Helps defense and aerospace clients execute large-scale transformations to create substantial and enduring improvements in mission readiness.
Louisa Greco
Advises clients on the development and implementation of large-scale transformation programs for substantial performance and health improvement.
Chris Hagedorn
Leader in GSI’s Transformation Practice, where he designs and executes comprehensive transformations, including M&A integration and restructuring.