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Basis Technologies and Lessen List Combined Chicago Loop Office Space for Sublease

Basis Technologies and Lessen are subleasing their combined office space at 11 East Madison Street in Chicago's Loop submarket.

By Colin Percy · May 26, 2026

Basis Technologies, led by CEO Shawn Riegsecker, and Lessen, led by Jay McKee, have listed their office space at 11 East Madison Street for sublease. The move comes as the Chicago Loop continues to face significant office vacancy challenges, prompting tenants to evaluate their real estate footprints in the central business district.

Companies mentioned

tenant

Basis Technologies

general contractor

B & M Cillessen Construction Co., Inc.

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