Mark Gilbert is a financial advisor at Sikich Financial with 24 years of industry experience. He holds the PFS™ designation along with Series 63 and Series 65 licenses. Prior to joining Sikich Capital Management LLC in 2025, he worked at Reason Financial Advisors, LLC and Reason Financial Advisors, Inc. for a combined total of 19 years. Sikich Financial is an SEC-registered wealth management firm serving individuals, pension and profit-sharing plans, trusts, estates, and business clients. The firm uses a modern portfolio theory-based investment process focused on diversified, asset-class-based allocations primarily through passive mutual funds and ETFs.

Gretchen Radach is a financial advisor at Sikich Financial in Naperville, IL, holding Series 65 and Series 66 licenses with three years of industry experience. She previously operated Gretchen Radach Consulting LLC for eight years before joining Sikich Capital Management. Outside of her advisory role, she serves as president of Gretchen Radach LLC, an entity used for passive investments. Sikich Financial is a multi-team SEC-registered advisory firm serving individuals, retirement plans, trusts, estates, and business entities. The firm combines financial planning and portfolio management with retirement plan consulting, using an asset-allocation approach supported by both in-house and third-party managers.