Sherry is Principal – Asset Management at GK Real Estate, where she currently directs all leasing and operations activities for the company's commercial portfolio.

GK Real Estate's aggregate occupancy rate is 92% for all properties; and 97% of GK Real Estate’s tenants have renewed their leases. Mast joined GK as a property manager in 1997, and in 2003 she was promoted to direct leasing for GK's regional malls, neighborhood shopping centers and office properties.

Prior to her tenure with GK, Sherry spent four years as a Quality Assurance Associate for Hyatt Hotel Corporation, then joined BakeMark (a national bakery supply company) as Marketing Manager. There she worked with several national retailers including Starbucks Coffee and Wal-Mart.

Sherry is a licensed real estate broker in Illinois with a bachelor’s degree in corporate communications from Northern Illinois University.