Jack Brennan

Senior Leasing Associate, Sage Realty Corporation
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Transactions

Lease 10/07/2025

437 Madison Ave
Lease 09/24/2025

437 Madison Ave
Lease 04/03/2025

777 3rd Ave
Lease 03/18/2025

437 Madison Ave
Lease 09/12/2024

437 Madison Ave
Sale 04/23/2024

1450 Feehanville Dr
Lease 02/16/2024

3625 N Wilke Rd
Lease 10/05/2022

747 3rd Ave
Lease 06/28/2022

777 3rd Ave
Lease 06/28/2022

777 3rd Ave
Lease 06/28/2022

777 3rd Ave
Lease 06/28/2022

777 3rd Ave
Lease 06/28/2022

777 3rd Ave
Lease 06/28/2022

777 3rd Ave
Lease 06/28/2022

777 3rd Ave
Lease 06/28/2022

777 3rd Ave
Lease 06/27/2022

767 3rd Ave
Lease 11/18/2021

437 Madison Ave
Lease 11/15/2021

437 Madison Ave
Lease 09/10/2020

Elk Grove Technology Park
Lease 09/09/2020

437 Madison Ave
Lease 07/01/2020

777 3rd Ave
Lease 06/18/2020

Elk Grove Technology Park
Sale 01/27/2020

800 Enterprise Ct
Lease 06/27/2019

Elk Grove Technology Park
Sale 01/22/2018

955 E Higgins Rd
Sale 01/22/2018

955 E Higgins Rd
Sale 12/05/2017

1200 Lunt Ave
Lease 05/30/2017

251 Wille Rd

Organizations

CBRE

Diversified, Leasing Broker, Property Manager, Sales Broker

Sage Realty Corporation

Owner

Sage Realty Corporation

Owner

Buildings

Prior Leasing Broker

251 Wille Rd
Prior Sales Broker

1200 Lunt Ave
Prior Sales Broker

Elk Grove Technology Park
Prior Leasing Broker

Elk Grove Technology Park
Prior Sales Broker

800 Enterprise Ct
Prior Leasing Broker

Elk Grove Technology Park
Prior Leasing Broker

3625 N Wilke Rd
Prior Sales Broker

1450 Feehanville Dr
Prior Leasing Broker

747 3rd Ave
Prior Leasing Broker

767 3rd Ave
Prior Leasing Broker

437 Madison Ave
Prior Leasing Broker

777 3rd Ave

Stories

This Week's Chicago Deal Sheet

Source: Bisnow

Lee & Associates Negotiates $3.4M Sale of Industrial Building in Elk Grove Village, Illinois

Source: REBusinessOnline

German aerospace manufacturer first tenant at Elk Grove Technology Park – REJournals

Source: rejournals.com

Healthcare Nonprofit Expands at 777 Third Avenue

Source: Commercial Observer

Cambridge Associates Doubles Its Footprint at 437 Madison

Source: Commercial Observer

Cosentino Group to take over 46k SF at Brennan’s Elk Grove Technology Park development – REJournals

Source: rejournals.com

Asset Manager Sycamore Nabs First Office Space at 437 Madison Avenue

Source: Commercial Observer

Investment Manager Takes 5K SF at William Kaufman’s 437 Madison Avenue

Source: Commercial Observer

Law Firm Spears & Imes Takes 8K SF at 767 Third Avenue

Source: Commercial Observer

Law Firm, Recruiter and Real Estate Investor Renew at 777 Third Avenue

Source: Commercial Observer

Law Firm, Recruiter and Real Estate Investor Renew at 777 Third Avenue

Source: Commercial Observer

Law Firm, Recruiter and Real Estate Investor Renew at 777 Third Avenue

Source: Commercial Observer

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Commercial Observer