My name is Leslie Kossoff. I’m an executive advisor specializing in strategy and turnaround. From start-ups to Fortune 50s, across industries and sectors, I create success for my executives and their organizations.
I’m based in the United States, but it’s just as likely you’ll find me in Europe or Asia. (You can read my biography here.)
My clients range from established globals like Sony, Fidelity Investments, Baxter Healthcare and Kraft Foods to start-ups in industries as diverse as AI, gardening and fashion. No matter who and no matter where, I guide them toward their success.
Here’s just a sample of what they say…
“It was as if she reached into my brain, crystalized and put into words all the things I was never able to articulate myself. She spoke my dreams - and then told us how to make them come true.”
Takeo Minomiya, Corporate Vice President, Sony Corporation / President, Sony Semiconductor Company
“Leslie is direct, honest and accurate.”
Kenneth Romans, Senior Vice President, Fidelity Investments
“Her advice is key to success - now and in years to come.”
Michelle W. Bowman, Vice Chair, United States Federal Reserve
My focus now is two-fold:
Making sure that owners, executives and entrepreneurs of micro, small- and medium- sized organizations have the immediately implementable resources you need to achieve…and exceed…your goals, and
Providing employees - whether new, early-stage or existing - the mentoring that’s no longer available in your organizations, but you still need to create your own success.
Here’s how:
The Consultant Series
Small- and Medium-Sized businesses need actionable answers - fast - whether you’re fixing what is or building what’s next. These implementation- and measurement-based guides give you those answers.
The Courses
Self-Managed. Self-Directed. Immediately Implementable. Measurable. Repeatable. Each 3-4 Hours per Week for 8 to 12 Weeks. All in 5 to 7 Steps.
It’s more than training. It’s transformation.
The Hamilton Papers
Short essays providing the mentoring and guidance needed by entering, new to work and early stage employees building your career - inspired by “Hamilton - The Musical” - and all at no cost to you.
Coming in 2026.
The Things They Never Tell You
My Substack blog featuring short essays, notes and more - all mentoring you and your organization toward success.
Engagements (limited)
I work with an extremely limited number of clients each year. Please email me with questions and for my availability.
