Please join us in welcoming Jack Kennedy and Graham Mauck to the Willow Street team.
Jack Kennedy
Jack is responsible for managing bookkeeping and financial reporting for Willow Street client families, focusing on cash management, bill pay, and account reconciliations. He works closely with Relationship Managers to ensure our clients’ trust activity, no matter how unique or complex, is captured promptly and accurately, and distills their structures and investment data into actionable information.
Prior to joining Willow Street, Jack served as an Income Auditor at the Four Seasons Resort and Residences in Jackson Hole, where he refined his client service and financial management skills while working closely with distinguished guests. Previously, as a Tax Associate at Moss Adams LLP, he provided advisory services and prepared tax returns for clients including high-net-worth individuals, multinational corporations, and REITs.
Jack is a licensed Certified Public Accountant (CPA). Originally from San Francisco, California, he earned his BS in Economics and Accounting from the University of California, Santa Barbara. Outside of work, Jack enjoys snowboarding, playing golf, and serving as an umpire for the Jackson Hole Youth Baseball program.
Before joining Willow Street, what was the most unusual or interesting job you’ve ever had?
During college, I spent two summers working as a surf instructor and counselor at a summer camp in Santa Cruz, California. Having attended the same camp as a child, it was a full-circle experience that allowed me to give back to a place that shaped many of my early memories. I loved helping campers build confidence, learn new skills, and create the same meaningful experiences I once had there.
What’s something you’re passionate about outside of work?
I’ve always been passionate about team sports and the sense of camaraderie, discipline, and shared purpose they inspire. Growing up, playing sports shaped my approach to leadership, communication, and accountability. Today, I stay connected to this passion — and hope to motivate some of those same values and lessons — by coaching youth soccer and officiating both youth soccer and baseball.
Graham Mauck
Graham provides ongoing operational support to the Client Services team and works closely with families and their advisors as they onboard and begin their relationship with Willow Street. He oversees and implements an array of activities focused on providing a consistently exceptional experience to Willow Street client families.
Prior to joining Willow Street, Graham served as a Sales Lead at Jackson Hole Sports, a premier retail operation at Jackson Hole Mountain Resort. In this role, he developed strong leadership and operational management skills, overseeing team performance and delivering an exceptional client experience in a dynamic environment. At Willow Street, Graham applies the same focus on precision, responsiveness, and client care to support fiduciary structures and family objectives.
Originally from Richmond, Virginia, Graham earned his BS in Sport and Entertainment Management from the University of South Carolina. In his free time, he enjoys skiing, biking, listening to live music, and spending time outdoors.
What’s the best piece of advice you’ve ever been given?
“Most of us can, as we choose, make of this world either a palace or a prison.” I first heard this quote many years ago at a summer camp that I attended in the mountains of Virginia, and it has stayed with me ever since. It reminds me that our experiences are often shaped by our perspective and attitude. I strive each day to approach life with optimism and gratitude — and to create my own palace.
What’s the favorite place you have traveled to and why?
A few years ago, I spent nearly a month exploring New Zealand. I traveled with family across both islands, but my favorite stop was Milford Sound, a breathtaking fjord on the South Island. Cruising through the water surrounded by towering mountains and waterfalls cascading directly into the sound was an unforgettable experience. I hope to return someday to experience it all again.
