May 8, 2026 — Gnarus Advisors LLC announced that two of its Principals, Jessica B. Horewitz and Stephen E. Sellick, have been named Thought Leaders in the newly released Lexology Index: Insurance 2026. Thought Leader recognition is reserved for individuals who distinguish themselves through Lexology’s independent research process (approximately the top 25–30% of all ranked practitioners worldwide). Gnarus is also among a limited number of firms with multiple Thought Leaders recognized in this edition.
“It is a privilege to be recognized alongside Stephen Sellick, whose leadership has been instrumental in shaping the firm’s commitment to rigorous, client-focused analysis. We are grateful to our clients and peers for their continued trust.” — Jessica B. Horewitz, President
About the Lexology Index
The Lexology Index (formerly Who’s Who Legal) is a peer- and client-researched guide published by Law Business Research. Rankings are based on feedback from corporate counsel and clients, nominations from respected practitioners, and independent analysis by Lexology researchers. The Insurance 2026 edition highlights leading lawyers and consulting experts worldwide across insurance litigation, coverage disputes, regulatory matters, and expert witness engagements.
About Jessica B. Horewitz
Jessica B. Horewitz, Ph.D. is President of Gnarus Advisors LLC. She provides quantitative analysis and expert witness services in dispute settings, including product liability matters, corporate restructurings, and financial reporting. Her work spans deterministic and probabilistic liability forecasting and insurance coverage analysis, and she has contributed to more than two dozen corporate transactions across industrial, medical/pharmaceutical, and cosmetic products.
About Stephen E. Sellick
Stephen E. Sellick is the Founder and Board Chair of Gnarus Advisors LLC. For more than three decades, he has supported high-stakes insurance and reinsurance matters, focusing on the quantitative dimensions of complex coverage and claims disputes, risk management, and corporate governance. He holds an M.A. from the University of Chicago Harris School of Public Policy and a B.S. from the Wharton School of the University of Pennsylvania.
About Gnarus Advisors LLC
Gnarus Advisors LLC is a quantitative analysis and advisory firm specializing in corporate litigation support, public policy, and risk management. We advise law firms, corporations, and public entities on matters requiring rigorous analytical expertise at the intersection of data, finance, governance, and law. Gnarus has been recognized by Consulting magazine as one of its “Seven Small Jewels” and by Inc. magazine as one of the fastest-growing firms in its sector.
Contact
Annie Dizon, adizon@gnarusllc.com
gnarusadvisors.com
