Nonprofit · EIN 36-4117899
THE ROBERT & HEATHER GROTTKE FOUNDATION
Tax-exempt · WHEATON, IL 60189
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $1,274 | $52,266 | -$50,992 | $111,568 | $28,462 | $83,106 |
| December 31, 2024 | 990-PF | $2,019 | $48,000 | -$45,981 | $134,098 | $0 | $134,098 |
| December 31, 2023 | 990-PF | $4,500 | $35,000 | -$30,500 | $130,000 | $0 | $130,000 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Dividends
- $1,274
Expenses
- Grants and similar amounts paid
- $52,266
Balance sheet and other
- Total assets, start of year
- $134,098
- Total assets, end of year
- $111,568
- Total liabilities, end of year
- $28,462
- Net assets, end of year
- $83,106
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-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Gary Grottke 4857 Keswick way, Naples, FL 34105 | President | 2 | $0 |
| Hollis Bourne 1215 Mayo, Wheaton, IL 60189 | VP & Secretary | 0.25 | $0 |
| Thomas Grottke 100 Old Common, Wethersfield, CT 06109 | VP | 0.25 | $0 |
990-PF for the year ended December 31, 2024: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Gary Grottke 3310 Hamlet Dr unit 3, Naples, FL 34105 | President | 1 | $0 |
| Hollie Bourne 3310 Hamlet Dr unit 3, Naples, FL 34105 | VP & Secretary | 0.1 | $0 |
| Thomas Grottke 3310 Hamlet Dr unit 3, Naples, FL 34105 | VP | 0.1 | $0 |
990-PF for the year ended December 31, 2023: 1 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Robert Grottke 47 E Chicago Ave Ste 360, Naperville, IL 60540 | Mgr | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 1104 GOLF LN, WHEATON, IL 60189-6306
- In care of
- % HOLLIS BOURNE
- Signed the 990-PF
- HOLLIS BOURNE, VP & Secretary
- Phone
- (630) 254-6909
- Return prepared by
- GRG Investments LLC
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. 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-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 36-4117899
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 1997
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T20J)
- Assets (IRS master file)
- $111,568
- Income (IRS master file)
- $1,274
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $1,274 | $52,266 | $111,568 | XML |
| 990-PF | December 2024 | $2,019 | $48,000 | $134,098 | XML |
| 990-PF | December 2023 | $4,500 | $35,000 | $130,000 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | 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 36-4117899).
Questions about THE ROBERT & HEATHER GROTTKE FOUNDATION
- What is the EIN of THE ROBERT & HEATHER GROTTKE FOUNDATION?
- The employer identification number (EIN) of THE ROBERT & HEATHER GROTTKE FOUNDATION is 36-4117899.
- Is THE ROBERT & HEATHER GROTTKE FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1997.
- Are donations to THE ROBERT & HEATHER GROTTKE FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does THE ROBERT & HEATHER GROTTKE FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of THE ROBERT & HEATHER GROTTKE FOUNDATION 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 THE ROBERT & HEATHER GROTTKE FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of THE ROBERT & HEATHER GROTTKE FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
- How much revenue does THE ROBERT & HEATHER GROTTKE FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $1,274, expenses of $52,266 and total assets of $111,568 at year end.
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