Executive Coaching, Reimagined for Elite Performance
Lead Beyond Limits
Welcome to Mosler Code
Executive Coaching & Advisory for:
CEOs, COOs, C-Suite Teams, Founders, Social-Impact and Nonprofit Leaders
Executive Coaching is evolving; Mosler Code stands at the forefront:
Mosler Code delivers next-level executive coaching and advisory grounded in decades of expansive lived leadership — accelerating decisive leadership movement and shaping cultures of trust that power enduring performance.
Mosler Code equips leaders to see clearly, decide boldly, and move decisively.
Presence into Performance
Movement not Maintenance
Leadership that Outlives the Leader
Testimonials
MK
Global Head of Investor Relations
$150 Billion Private Markets Firm
Leading Private Markets Firm
“Over my 40-year career in financial services, I’ve worked with many Executive Coaches — John is unique. He sees straight into the strategic and human dynamics that drive high-stakes leadership and presses my thinking with precision, recalibrating how I approach the firm’s most complex decisions— sharpening a leadership lens that is deeper and more penetrating. When the path is clear, John is a great cheerleader of the approach and process. It is evident that he cares, and he holds me accountable to deliver.”
MR
Founder – MRoss LLC (Consulting)
(Former Chief of Staff - Executive Office, Verizon)
MRoss LLC (Consulting)
“Working with John has accelerated my growth in ways I couldn’t have expected. As a 34-year Verizon executive transitioning into consulting, I had the experience and drive — but I needed a new level of self-awareness, clarity, and disciplined structure for this next chapter. His ‘coaching + advisory’ style moved me from zero to momentum quickly, transforming conversations into contracts and direction into real revenue. His coaching blends intentional process with a rare depth of lived experience — elite athletics, Wall Street discipline, artistic mastery, and social impact — helping you see yourself and your possibilities differently. His commitment to my success is unyielding.”
SD
Senior Technical Advisor (C-Suite)
to the Executive Leadership
Nigerian National Oil Company
“Working with John has been genuinely transformative. His depth of experience, insightful guidance, and calm wisdom reshaped how I think, plan, and engage with my team. His questions and well-timed challenge helped me define and achieve purpose-driven goals — and every session leaves me more centered, focused, and intentional. “
KK
Chair of the Board — ADAPT Community Work (Formerly United Cerebral Palsy of New York City)
“After the unexpected passing of our CEO and Board Chair, stepping into the Chair role was a moment of deep responsibility. John quickly built trust with a calm, grounded presence and a deep understanding of nonprofit leadership. His questions pushed me to uncover my own insights — those ‘aha’ moments that changed how I lead. His guidance helped me navigate complex situations, lead our Board more effectively, and make a bigger impact on our mission. Working with John didn’t just help — it changed the way I lead.”