Therkildsen Charitable Foundation
Therkildsen Charitable Foundation is a private foundation, based in Naperville, IL. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $710K in total assets. In 2025, it awarded 4 grants totaling $419K. Net investment income was $383K.
Therkildsen Charitable Foundation at a glance
In short: Therkildsen Charitable Foundation gave $419K across 4 grants in 2025 (avg $105K), mostly in Iowa. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $418,500
- +18.6% vs 2024
- Grants made (2025)
- 4
- +0.0% vs 2024
- Average grant
- $104,625
- +18.6% vs 2024
- Median grant
- $1,000
- Total assets
- $709,795
- -5.5% vs 2024
- Primary geography
- Iowa (99% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Therkildsen Charitable Foundation funds
How this funder distributes its grants
Top Recipients
Top 4 recipients in 2025
The largest 2025 recipient was Iowa State University Fdn ($416K). Together the top 4 received $419K.
Grant Size Distribution
18 grants across all recorded years
The most common grant size was under $50K: 14 grants of 18 (78%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 4 itemized grants.
Cities
How Therkildsen Charitable Foundation gives
- Giving grew 31% from 2022 to 2025. Method
- In 2025 it paid out 90% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $3K (2021) to $419K (2025). In 2025 it made 4 grants totaling $419K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Iowa State University Fdn Ames, IA | Charitiable Contribution | $416,000 |
| Susan G Komen Race for the Cure Dallas, TX | Charitable Contribution | $1,000 |
| Trinitas Classic Academy Franklin, TN | Charitable Contribution | $1,000 |
| Horsepower Therapeutic Riding Elburn, IL | Charitable Contribution | $500 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $709,795 | $382,988 | $424,374 | $418,500 | 4 | $418,500 | $382,988 | $465,770 |
| 2024 | $751,181 | $372,579 | $360,908 | $352,750 | 4 | $352,750 | $372,579 | $421,283 |
| 2023 | $739,510 | $322,678 | $354,765 | $354,250 | 4 | $354,250 | $322,678 | $366,551 |
| 2022 | $771,597 | $94,159 | $325,482 | $320,350 | 3 | $320,350 | $40,894 | $336,651 |
| 2021 | $1,002,920 | $38,081 | $3,265 | $3,250 | 3 | $3,265 | $38,081 | $317,674 |
| 2020 | $968,104 | $35,680 | $124,265 | $122,250 | 3 | — | $35,680 | $224,009 |
| 2019 | $1,056,689 | $35,525 | $71,917 | $66,400 | 5 | — | $35,525 | $130,729 |
Under IRS private-foundation payout rules, Therkildsen Charitable Foundation reported a distributable amount of $466K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Therkildsen Charitable Foundation's 2025 filing lists 4 officers; none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
Charles G. Therkildsen
Trustee
On filings since 2019
No compensation reported
Deanne L. Prochnow
Trustee
On filings since 2019
No compensation reported
Debra L. Peterson
Trustee
On filings since 2019
No compensation reported
Joyce A. Therkildsen
Trustee
On filings since 2019
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "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 Therkildsen Charitable Foundation
How much does Therkildsen Charitable Foundation give each year?
Therkildsen Charitable Foundation gave $419K across 4 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $353K across 4 grants.
What is Therkildsen Charitable Foundation's typical grant size?
Therkildsen Charitable Foundation's median grant in 2025 was $1,000, and its average grant was $104,625, across 4 grants on its 2025 IRS Form 990-PF.
Where does Therkildsen Charitable Foundation give grants?
Therkildsen Charitable Foundation gives mostly in Iowa: 99% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there.
How large is Therkildsen Charitable Foundation?
Therkildsen Charitable Foundation reported $710K in total assets on its 2025 IRS Form 990-PF. It paid out $419K in qualifying distributions that year, against a required minimum of $466K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What is Therkildsen Charitable Foundation's EIN?
Therkildsen Charitable Foundation's EIN (Employer Identification Number) is 36-4157275. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS August 27, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS April 9, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 16, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 12, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 13, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 15, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 14, 2026)
- IRS filings on file for fiscal years 2019–2024
Live grants for the work Therkildsen Charitable Foundation funds
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