Stephen Sellick in

Stephen Sellick

Captain · DISC type DS
Board Chair at Gnarus Advisors LLC
📍 San Francisco Bay Area, United States

Stephen Sellick is the Founder and Board Chair of Gnarus Advisors, a nationally recognized leader in complex quantitative analysis for corporate litigation and public policy. Educated at The Wharton School and the University of Chicago, people who have worked with him describe him as intelligent, insightful, and creative in solving high-stakes challenges.

Outside of work, Stephen is deeply engaged in his community, serving on the boards of AVIVO Wines and the Sonoma County Regional Parks Foundation. He applies his expertise to his passions for sustainability, agriculture, and food, and is active with organizations like Slow Food and the Sonoma County Master Food Preservers.

Unique fact: He actively applies the principle of "shoshin" (a beginners mindset) to his board leadership and problem-solving.

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Experience
4 Years
Current Role
Board Chair
Job Level
Leadership
Location
San Francisco Bay Area, United States
Personality Overview

How Stephen shows up

Decisive But Calm
Long-Term Thinker
Output-Driven

Reading between the lines and seeing beyond your words comes naturally to them. They exhibit a rare combination of being result-oriented but patient at the same time. They might take some time to make their mind up but once they do, they don't change it easily.

Priorities

Topics Stephen cares about

Board Governance
Serves as President of the San Francisco chapter of the Private Directors Association and founded its Governance Lab, focusing on enhancing board effectiveness and cultivating future leaders.
Complex Risk Analysis
His career is built on providing counsel and expert testimony on complex issues in risk management, corporate litigation, and public policy for C-suite clients.
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Career

Work history

Board Chair
Gnarus Advisors LLC
SVP - Litagation Consulting Business, Nathan Associates (acquired Gnarus Advisors)
Gnarus Advisors LLC
Founder | Chief Executive Officer
Gnarus Advisors LLC
4-2025
Chapter President | National Chair, Board Development Task Force | Founder, PDA Governance Lab
Private Directors Association®
12-2024
Lecturer
Harris School of Public Policy at the University of Chicago
In the press

Media appearances

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Education
1991 - 1993
M.A.
Harris School of Public Policy at the University of Chicago
1985 - 1989
B.S.
The Wharton School
Social presence
in
Behavioral profile

DISC profile (public)

D

Dominance (D)

Dominance (D) reflects how goal and task oriented a person is, and their ability to accomplish results irrespective of how demanding the circumstances might be. Those scoring high tend to be motivated by winning, competition, and success.

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