Robert & Heather Grottke Foundation

Private foundation · Grantmaker Naples, FL EIN: 36-4117899

Robert & Heather Grottke Foundation is a private foundation, based in Naples, FL. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $112K in total assets. In 2025, it awarded 8 grants totaling $52K.

Key facts about Robert & Heather Grottke Foundation

In short: Robert & Heather Grottke Foundation gave $52K across 8 grants in 2025 (avg $7K), top state Illinois. Source: 2025 IRS Form 990-PF.

EIN
36-4117899
Latest 990 filing
Form 990-PF, 2025
Annual giving (2025)
$52,115
Grants made (2025)
8
Average grant
$6,514
Median grant
$5,000
Total assets
$111,568
Primary geography
Illinois (39% of itemized 2025 grant dollars)

Data from IRS Form 990-PF, 2025; updated September 2026.

Financial Overview

From 2025 IRS Form 990-PF · View filing

Total Assets

$112K

-16.8% YoY

Annual Giving

$52K

+15.8% YoY

Grant Count

8

+100.0% YoY

Avg Grant Size

$7K

-42.1% YoY

Under IRS private-foundation payout rules, Robert & Heather Grottke Foundation reported a distributable amount of $895 for 2025 — the minimum it must pay out in qualifying distributions.

How Robert & Heather Grottke Foundation gives

  • Giving grew 421% from 2022 to 2025. Method
  • In 2023 it paid out well above its IRS minimum distribution (the 5% rule). Method

From the foundation's IRS Form 990-PF filings. Methodology.

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

10states

Share of 2025 grant dollars across all 8 itemized grants.

Cities

ChicagoElmwood ParkLibertyvilleLombardLos AngelesMaryvilleMemphisWethersfieldEvanstonHillsdaleRochesterWhittierBloomingtonGlen EllynIndianapolisMinotNeenahOrlando

Giving Over Time

Total grant dollars and number of grants per year

$0$20K$40K$60K10 grants2020 5 grants2021 8 grants2022 3 grants2023 4 grants2024 8 grants2025

From 2020 to 2025, annual grant giving ranged from $4K (2021) to $52K (2025). In 2025 it made 8 grants totaling $52K.

Grant Insights

How this funder distributes its grants

Top Recipients

Top 8 recipients in 2025

Nathaniels Hope: $15KNathaniels Hope$15KSt John Lutheran: $15KSt John Lutheran$15KSt Paul Lutheran: $10KSt Paul Lutheran$10KCornerstone Counseling Ctr Chicago: $5KCornerstone Counseling CtrChicago$5KDakota Boys Ranch: $5KDakota Boys Ranch$5KInternational Childrens Fund: $2KInternational Childrens Fund$2KLambs Farm: $500Lambs Farm$500St Jude: $115St Jude$115

The largest 2025 recipient was Nathaniels Hope ($15K). Together the top 8 received $52K.

Grant Size Distribution

28 grants across all recorded years

28<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 28 grants of 28 (100%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
Nathaniels Hope Orlando, FLGeneral operations$15,000
St John Lutheran Lombard, ILGeneral operations$15,000
St Paul Lutheran Wethersfield, CTGeneral operations$10,000
Cornerstone Counseling Ctr Chicago Chicago, ILGeneral operations$5,000
Dakota Boys Ranch Minot, NDGeneral operations$5,000
International Childrens Fund Neenah, WIGeneral Operations$1,500
Lambs Farm Libertyville, ILGeneral operations$500
St Jude Memphis, TNGeneral operations$115

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$100K$200K$300K2020 2021 2022 2023 2024 2025
Metric202520242023
Total Assets$111,568$134,098$130,000
Revenue$1,274$2,019$4,500
Expenses$52,266$48,000$35,000
Qualifying Distributions—$60$200,000
Distributable Amount$895—$10,000

Data update history

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2020 (received by the IRS January 29, 2023)
  2. Updated Form 990-PF for fiscal year 2021 (received by the IRS January 29, 2023)
  3. Updated Form 990-PF for fiscal year 2022 (received by the IRS October 12, 2023)
  4. Updated Form 990-PF for fiscal year 2023 (received by the IRS October 9, 2024)
  5. Updated Form 990-PF for fiscal year 2024 (received by the IRS October 14, 2025)
  6. Updated Form 990-PF for fiscal year 2025 (received by the IRS April 23, 2026)
  7. IRS filings on file for fiscal years 2020–2025

Leadership & Key People

Officers and directors from IRS filings

Robert & Heather Grottke Foundation is led by Gary Grottke, President on every filing since 2024; none of the 3 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Gary Grottke

    President

    On filings since 2024

    2 hrs/week

    No compensation reported

  • Hollis Bourne

    Vice President & Secretary

    On filings since 2024

    0.3 hrs/week

    No compensation reported

  • Thomas Grottke

    Vice President

    On filings since 2024

    0.3 hrs/week

    No compensation reported

Former officers (1)
  • Former: Robert Grottke (2020–2023) — Manager

Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Frequently asked questions about Robert & Heather Grottke Foundation

How much does Robert & Heather Grottke Foundation give each year?

Robert & Heather Grottke Foundation gave $52K across 8 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $45K across 4 grants.

What is Robert & Heather Grottke Foundation's typical grant size?

Robert & Heather Grottke Foundation's median grant in 2025 was $5,000, and its average grant was $6,514, across 8 grants on its 2025 IRS Form 990-PF.

Where does Robert & Heather Grottke Foundation give grants?

Robert & Heather Grottke Foundation's top state is Illinois, with 39% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were Florida (29%) and Connecticut (19%).

Does Robert & Heather Grottke Foundation give general operating support?

Yes: 100% of Robert & Heather Grottke Foundation's 2025 grants with a stated purpose (8 of 8) were for general or operating support, per its 2025 IRS Form 990-PF.

Who are Robert & Heather Grottke Foundation's largest grantees?

Robert & Heather Grottke Foundation's largest 2025 grantees include Nathaniels Hope ($15,000), St John Lutheran ($15,000) and St Paul Lutheran ($10,000), according to its 2025 IRS Form 990-PF. Together they received 77% of its itemized 2025 grant dollars.

How large is Robert & Heather Grottke Foundation?

Robert & Heather Grottke Foundation reported $112K in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $1K.

How much is Robert & Heather Grottke Foundation required to give away each year?

Private foundations must generally distribute about 5% of their assets annually. For 2025, Robert & Heather Grottke Foundation reported a distributable amount of $895 on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.

What is Robert & Heather Grottke Foundation's EIN?

Robert & Heather Grottke Foundation's EIN (Employer Identification Number) is 36-4117899. IRS Form 990 filing data is available on this page for 2020–2025.

Data last updated September 2026. Sourced from IRS Form 990-PF filings.

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