Nonprofit · EIN 36-3237663
CHICAGO OFFICE LEASING BROKERS ASSN
Tax-exempt · HIGHLAND PARK, IL 60035
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $79,501 | $62,246 | $17,255 | $84,007 | – | $84,007 |
| December 31, 2024 | 990-EZ | $49,632 | $66,285 | -$16,653 | $67,027 | – | $67,027 |
| December 31, 2023 | 990-EZ | $71,393 | $66,971 | $4,422 | $83,680 | – | $83,680 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $101,300
- Membership dues
- $7,806
- Investment income
- $2,287
- Net income from fundraising events
- -$31,892
Expenses
- Grants and similar amounts paid
- $9,500
- Compensation of officers, directors and key employees
- $0
- Professional fees and payments to contractors
- $2,475
- Other expenses
- $50,271
Balance sheet and other
- Total assets, start of year
- $67,027
- Total assets, end of year
- $84,007
- Total liabilities, end of year
- –
- Net assets, end of year
- $84,007
- Cash, savings and investments
- $84,007
- Gross receipts
- $168,218
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990-EZ for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Adam Mitchell | President | 1 | $0 |
| Jamey Dix | Vice President | 1 | $0 |
| Craig Nadborne | Treasurer | 1 | $0 |
| Corby Marx | President Emeri | 1 | $0 |
| Lauren Lakin | Executive Dir. | 1 | $0 |
| Aaron Schuster | Secretary | 1 | $0 |
| Brian Atkinson | Director | 1 | $0 |
| Tom Berarducci | Director | 1 | $0 |
| Mark Buth | Director | 1 | $0 |
| Andy Demoss | Director | 1 | $0 |
| Christy Domin | Director | 1 | $0 |
| Jeff Dowdell | Director | 1 | $0 |
| Jordan Decker | Director | 1 | $0 |
| Steve Golz | Director | 1 | $0 |
| Mark Gunderson | Director | 1 | $0 |
6 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Bruce Hopple | Director | 1 | $0 |
| Michael Lirtzman | Director | 1 | $0 |
| Dan Maslauski | Director | 1 | $0 |
| Adam Pines | Director | 1 | $0 |
| Melissa Rubenstein | Director | 1 | $0 |
| Greg Tait | Director | 1 | $0 |
990-EZ for the year ended December 31, 2024: 18 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Corby Marx | President | 1 | $0 |
| Adam Mitchell | Vice President | 1 | $0 |
| Craig Nadborne | Treasurer | 1 | $0 |
| Dan Mauslauski | President Emeri | 1 | $0 |
| Lauren Lakin | Executive Dir. | 1 | $0 |
| Allison Olszta | Secretary | 1 | $0 |
| Brian Atkinson | Secretary | 1 | $0 |
| Tom Beraducci | Director | 1 | $0 |
| Mark Buth | Director | 1 | $0 |
| Jamey Dix | Director | 1 | $0 |
| Jeff Dowdell | Director | 1 | $0 |
| Burce Hopple | Director | 1 | $0 |
| Michael Lirtzman | Director | 1 | $0 |
| Olivia Wirth | Director | 1 | $0 |
| Aaron Schuster | Director | 1 | $0 |
| Greg Tait | Director | 1 | $0 |
| Ellen Zalatoris | Director | 1 | $0 |
| Mark Gunderson | Director | 0 | $0 |
990-EZ for the year ended December 31, 2023: 18 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Corby Marx | President | 1 | $0 |
| Adam Mitchell | Vice President | 1 | $0 |
| Christine Choi-Moore | Treasurer | 1 | $0 |
| Dan Mauslauski | President Emeri | 1 | $0 |
| Allison Olzta | Secretary | 1 | $0 |
| Brian Atkinson | Director | 1 | $0 |
| Scott Becker | Director | 1 | $0 |
| Tom Beraducci | Director | 1 | $0 |
| Mark Buth | Director | 1 | $0 |
| Jamey Dix | Director | 1 | $0 |
| Jeff Dowdell | Director | 1 | $0 |
| Burce Hopple | Director | 1 | $0 |
| Michael Lirtzman | Director | 1 | $0 |
| Craig Nadborne | Director | 1 | $0 |
| Aaron Schuster | Director | 1 | $0 |
| Greg Tait | Director | 1 | $0 |
| Ellen Zalatoris | Director | 1 | $0 |
| Lauren Lakin | Executive Dir. | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 1196 OXFORD CT, HIGHLAND PARK, IL 60035-1033
- In care of
- % JONES DAY REAVIS & POQUE
- Signed the 990-EZ
- Craig Nadbone, Treasurer
- Phone
- (847) 636-0259
- Website
- www.colbachicago.org
- Return prepared by
- STEVEN J SHIFRIN CPA
Mission
To foster a professional and cooperative brokerage environment that benefits the real estate industry and brokerage leasing community.
Program accomplishments
- Meetings on Professional Topics of Interest to Organizational Members.
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-EZ on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 36-3237663
- Tax-exempt status
- 501(c)(6): Business league or chamber of commerce
- Donations deductible
- No
- Exempt since
- 1983
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Unknown (Z99Z)
- Assets (IRS master file)
- $84,007
- Income (IRS master file)
- $168,218
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $79,501 | $62,246 | $84,007 | IRS |
| 990-EZ | December 2024 | $49,632 | $66,285 | $67,027 | IRS |
| 990-EZ | December 2023 | $71,393 | $66,971 | $83,680 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
| 990-EZ | December 2019 | – | – | – | IRS |
| 990-EZ | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 36-3237663).
Questions about CHICAGO OFFICE LEASING BROKERS ASSN
- What is the EIN of CHICAGO OFFICE LEASING BROKERS ASSN?
- The employer identification number (EIN) of CHICAGO OFFICE LEASING BROKERS ASSN is 36-3237663.
- Is CHICAGO OFFICE LEASING BROKERS ASSN tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 1983.
- Are donations to CHICAGO OFFICE LEASING BROKERS ASSN tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does CHICAGO OFFICE LEASING BROKERS ASSN file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of CHICAGO OFFICE LEASING BROKERS ASSN due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did CHICAGO OFFICE LEASING BROKERS ASSN last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who are the officers and directors of CHICAGO OFFICE LEASING BROKERS ASSN?
- The 990-EZ for the year ended December 31, 2025 lists 21 people; 0 received compensation from the organization.
- How much revenue does CHICAGO OFFICE LEASING BROKERS ASSN have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $79,501, expenses of $62,246 and total assets of $84,007 at year end.
Other nonprofits in HIGHLAND PARK
- ONE ACRE FUND EIN 20-3668110 · last filed 990 for 2025
- RAVINIA FESTIVAL ASSOCIATION EIN 36-6002273 · last filed 990 for 2025
- 1111 FOUNDATION EIN 46-1463656 · last filed 990-PF for 2024
- SACKS FAMILY FOUNDATION EIN 36-4053778 · last filed 990-PF for 2025
- AMERICAN ASSOCIATION FOR ACCREDITATION OF AMBULATORY SURGER EIN 36-3180580 · last filed 990 for 2024
- EXMOOR COUNTRY CLUB EIN 36-1054130 · last filed 990 for 2025
- NORTHMOOR COUNTRY CLUB EIN 36-1562080 · last filed 990 for 2025
- BOB OLINK GOLF CLUB EIN 36-0820190 · last filed 990 for 2025