Christian is Managing Principal at The Croton Group. He helps leadership teams and their organizations to achieve and sustain high performance through continuous improvement and disciplined commitment to learning.
Christian brings the perspective of a practitioner across four GE leadership eras this millennium, each with its own distinctive approach to culture and leadership development.
He was an executive leader at General Electric’s iconic corporate university “GE Crotonville” for nearly a decade. As GE’s global leader of customer education, Christian engaged with hundreds of enterprise customers including government ministers and CxOs across the Energy, Aerospace, and Healthcare industries.
He developed a diverse network of distinguished university faculty, learning consultants, and Crotonville alumni to support programs across the U.S., Canada, China, APAC, Africa, and the Middle East. Christian previously served as GE Healthcare’s Chief Learning Officer, where he led Learning & Development for the $18 billion business with 50K+ employees.
Prior to coming to Crotonville, Christian built expertise in Learning and Teaming through leadership roles at three venerable organizations: GE Healthcare, McKinsey & Company, and the U.S. Navy. His tenure at GE Healthcare included business roles spanning global business development, P&L management, and Lean Six Sigma deployment. He revitalized GE’s Healthcare Institute, the business’s global education campus for leadership development and technical training. As a McKinsey engagement manager, he led small management consulting teams serving clients across multiple industries. Christian proudly started his career as a naval officer in the U.S. Navy Submarine Force, where he learned process rigor, leadership under pressure, and resilience.
Christian is a part-time faculty member at Northeastern University, teaching in the executive education program. He earned a Master’s in Engineering Management from Northwestern University and an MBA from Northwestern’s Kellogg School of Management, where he was also elected class president. He received a Bachelor’s of Science degree from Cornell University, where he majored in Operations Research and Industrial Engineering on a full scholarship. His certifications include Nuclear Engineer Officer qualification from the U.S. Department of Energy and the Quality Leader credential, the highest distinction in GE’s Six Sigma certification program.
Christian believes that learning is a life-long journey that encompasses the mind, body, heart, and spirit. He serves as a catechetical teacher at his church and is a long-time trustee at one of America’s top academic high schools. He is a long-distance runner and an endlessly curious contributor to multiple book clubs. He resides in the Washington, DC area with his wife and daughters.
Leiza Brock is a Principal at The Croton Group, where she helps organizations achieve sustainable high performance through strategic learning and leadership development. Drawing from over three decades of experience at General Electric, she brings deep expertise in developing leaders, driving organizational transformation, and building cultures of continuous improvement.
As a senior leader at GE’s renowned Crotonville corporate university, Leiza played an instrumental role in shaping the learning strategy that contributed to GE’s recent successful transformation. She has particular expertise in designing and implementing leadership development programs that align with organizational objectives and drive measurable business results. Her experience spans multiple business functions including HR, sales and marketing, operations, and product development.
Throughout her career, Leiza has demonstrated success in navigating complex organizational challenges, from high-growth periods and acquisitions to transformative turnarounds. At GE Corporate, she developed and managed multiple entry-level leadership programs across finance, IT, and commercial functions. She was a key architect of the prestigious Corporate Leadership Staff (CLS) program and oversaw learning for the Corporate Audit Staff (CAS), both cornerstone programs in developing GE’s future leaders.
Earlier in her career at GE Capital Fleet Services, Leiza successfully unified teams from multiple acquired companies by creating an integrated sales training strategy. She later played a pivotal role in building the sales and marketing capabilities that drove international growth for GE Money, demonstrating her ability to align learning initiatives with business strategy and results.
Leiza brings a holistic perspective to leadership development, emphasizing the importance of open dialogue and mutual respect in building high-performing teams. She believes that sustainable organizational success comes from creating environments where individuals feel heard and empowered to contribute their best thinking to collective decisions.
A graduate of the University of Notre Dame, Leiza embodies the university’s commitment to fostering open discussion and inquiry in her leadership approach. She maintains strong ties to the Notre Dame community and remains a passionate supporter of Irish athletics.
Leiza resides in South Carolina with her husband, where she actively provides operational and strategic guidance to his manufacturing company. This hands-on experience with small business operations complements her enterprise-level expertise, giving her unique insight into the challenges and opportunities organizations face at different stages of growth.
Our focus is on senior leadership teams in periods of transition. We help teams to (re)establish operating rigor, alignment of purpose and priorities, and better cross-functional teamwork. The Croton Group is a trusted partner with operating experience spanning four GE eras and exclusive alignment to the Crotonville Leadership Institute.
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