The Firm
An elite partnership dedicated exclusively to solving the most complex challenges facing modern enterprises.
Our Heritage
Granite Brook was established by former tier-one consultants and industry executives who recognized a critical flaw in traditional advisory models: a reliance on templated solutions for unique, high-stakes problems.
We built this firm on a contrarian principle: that profound strategic insight cannot be mass-produced. It requires intense intellectual rigor, deep domain expertise, and an unwavering commitment to empirical truth.
Today, we serve as the quiet architects behind some of the most successful corporate turnarounds, market expansions, and operational overhauls in the Fortune 500 and aggressive mid-market sector.
Our Guiding Principles
The tenets that govern our analysis, our advice, and our conduct.
Empirical Truth
We do not deal in assumptions. Every strategic recommendation is anchored in rigorous financial modeling and exhaustive market data.
Fiduciary Alignment
We measure our success solely by the quantifiable enterprise value we generate for our clients. We tell you what you need to hear, not what you want to hear.
Execution Reality
A brilliant strategy that cannot be executed is a failure. We design operational frameworks alongside strategic imperatives to ensure seamless implementation.
The Partnership
Our partners are distinguished veterans of industry and elite consulting, bringing decades of specialized expertise to every engagement.
Jonathan Hayes
Managing Partner
Former Global Head of Strategy at a leading investment bank. Jonathan specializes in M&A integration, capital restructuring, and board-level advisory.
Sarah Lin, Ph.D.
Senior Partner, Operations
An expert in complex supply chain architecture and lean operations. Sarah has led turnarounds for over 40 global manufacturing firms.
Marcus Vance
Partner, Digital Strategy
Pioneers digital transformation initiatives, moving legacy enterprises into modern, data-driven architectures that dominate their respective markets.