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Form 990-PFTax year 2025EIN 36-4157275

Therkildsen Charitable Foundation

A private foundation in Naperville, IL. Its return for tax year 2025 lists 4 grants and $418,500 paid in grants.

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Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

8 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2025

    $418,500

    Grants listed
    4
    Assets, end of year
    $709,795

  • Tax year 2024

    $352,750

    Grants listed
    4
    Assets, end of year
    $751,181

  • Tax year 2023

    $354,250

    Grants listed
    4
    Assets, end of year
    $739,510

  • Tax year 2022

    $320,350

    Grants listed
    3
    Assets, end of year
    $771,597

  • Tax year 2021

    $3,250

    Grants listed
    3
    Assets, end of year
    $1,002,920

  • Tax year 2020

    $122,250

    Grants listed
    3
    Assets, end of year
    $968,104

  • Tax year 2019

    $66,400

    Grants listed
    5
    Assets, end of year
    $1,056,689

  • Tax year 2018

    $80,448

    Grants listed
    4
    Assets, end of year
    $1,093,081

Grants paid in 2025

4 grants, largest first

As listed on the return.

  1. Iowa State University FDNAmes, IA

    Charitiable contribution

    $416,000
  2. Susan G Komen Race for the CureDallas, TX

    Charitable contribution

    $1,000
  3. Trinitas Classic AcademyFranklin, TN

    Charitable contribution

    $1,000
  4. Horsepower Therapeutic RidingSaint Charles, IL

    Charitable contribution

    $500

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Human services1 grant $500100% of the total

By State

Grants to organizations with a US address, latest year.

  1. Iowa1 grant $416,000
  2. Tennessee1 grant $1,000
  3. Texas1 grant $1,000
  4. Illinois1 grant $500

Officers, directors and trustees

4 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Charles G TherkildsenTRUSTEE Hours 0Pay $0
  • Joyce A TherkildsenTRUSTEE Hours 0Pay $0
  • Deanne L ProchnowTRUSTEE Hours 0Pay $0
  • Debra L PetersonTRUSTEE Hours 0Pay $0

The return

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