Sam Lassoff
Studied at Columbia University
Worked at Blackstone
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About Sam
Every leader has an official version of themselves and a real one. I've spent my career understanding the gap between the two. At Heidrick & Struggles, I helped rebuild the go-to-market model for a $100 million practice, contributing to 40% growth in just over two years. At Blackstone, I built the talent intelligence platform used to evaluate leaders across more than 250 portfolio companies, surfacing more than 10,000 executives while reducing external search costs by $12 million. What distinguished my work was never just the ability to read the data. It was the ability to read the room at the same time, connecting what organizations said about themselves with how they actually operated. I've worked across strategy, talent, operations, and leadership, making consequential decisions, advising executives and boards, and building the systems organizations rely on to identify and develop leaders. Today, I bring that perspective to coaching leaders, leadership teams, and organizations navigating moments when what worked before is no longer enough.
Why do I coach?
The moments that shape careers, teams, and organizations rarely announce themselves in advance. A role becomes a different job. A leadership team that once worked stops producing. An opportunity that looked obvious reveals unexpected complexity. The window to influence what happens next begins to close. AI is changing how quickly those moments arrive. Work is moving faster than ever, but judgment has become more valuable, not less. There is less time to learn through experience before the next consequential decision arrives. I've spent my career on both sides of those moments: as an operator making decisions and living with their consequences, and as an advisor evaluating the leaders entrusted with making them. Coaching is where those experiences come together. My role is not to tell you what to do. It is to help you see more clearly, think more rigorously, and make decisions you can stand behind long after the moment has passed.
Work Experience
Executive Advisor & Coach
Samantha Lassoff Coaching & Consulting
June 2024 - Present
I partner with CEOs, founders, and senior leaders as an executive coach and advisor on leadership, succession, and organizational decisions that directly shape execution as companies scale. - Coach executives stepping into roles with new authority, expanded scope, or increased scrutiny. - Clarify priorities, pressure-test options, and strengthen decision quality in complex, fast-moving environments. - Coach senior leaders one-on-one on judgment, decision-making, and leadership effectiveness during periods of change and expanded responsibility.
Senior Vice President, Talent & People
Aspen Standard Wealth
2024 - 2025
Built leadership, talent, and organizational infrastructure for a new PE-backed holdco. - Designed talent strategy, organizational architecture, leadership expectations, and performance systems supporting rapid growth. - Created hiring, development, and capability-building practices for expanding scope, complexity, and cross-portfolio coordination. - Established operating rhythms, cultural practices, and leadership behaviors improving execution, cohesion, and long-term organizational stability.
Vice President, Portfolio Talent & Organizational Performance
Blackstone
2022 - 2024
Led portfolio-wide intelligence, analytics, and insight generation across 250 companies and 740,000 employees. - Designed and built Blackstone’s executive talent intelligence and recruiting enablement platform, increasing placement speed, improving decision quality, and reducing external search spend by $12M+. - Co-led Blackstone’s global 250+ CHRO network, advancing benchmarking, leadership development, and shared organizational insight. - Delivered leadership and organizational insight during diligence, CEO and CHRO transitions, and early operating phases.
Head of Research
Human Capital
2021 - 2022
Built the firm’s first talent insights and leadership research function for a $1.6B venture portfolio. - Led leadership diligence for Transcarent’s Series C and advised on organizational structure, executive capability, and team dynamics. - Developed rapid, evidence-based research briefs on compensation, hybrid work, and global talent strategy. - Created centralized insights repository and talent intelligence products for repeatable, data-informed decision-making.
Director, Workforce Strategy and Analytics
Heidrick & Struggles
2019 - 2021
Built the firm’s first global people analytics and leadership insight function. - Designed and executed leadership reviews covering 300+ senior leaders. - Produced leadership, performance, and team analyses informing executive development, promotions, and succession planning.
Practice Director, Financial Services Practice (Chief of Staff)
Heidrick & Struggles
2018 - 2020
Directed talent strategy, workforce planning, and leadership development for a $180M global practice. - Redesigned roles and team structures, improving performance and team health. - Built practice-wide talent review framework guiding leadership decisions and promotions.
Practice Director, Global Private Equity and Venture Capital Practices
Heidrick & Struggles
2016 - 2020
Directed strategy and operations to scale revenue and market share for a $100M practice. - Reimagined go-to-market and client coverage models, driving 40% revenue growth. - Partnered with senior leadership on business performance, succession planning, and client relationships.
Education
International Coaching Federation
ACC
Credentialed as an ICF-certified coach.
Columbia University
Bachelor of Arts - BA, East Asian Studies
Brown University
Leadership & Performance Coaching