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Private foundations Marathon, WItax years 2024 to 2025

Private foundations in Marathon, WI

5 private foundations based in Marathon, WI filed a 990-PF in the last two years. In their latest returns they gave $10.6 million in 125 grants, and 4 say they accept applications.

See which foundations fund work like yours Matching by cause, place and grant size

Foundations with a return in the last two years, each by its latest return (tax years 2024 to 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Largest givers

By grants paid, latest return
  1. Sonnentag Foundation LTDMarathon, WI · tax year 2025 Grants listed in an attachment (not in the e-file) Accepts applications $6,371,389 giving
  2. Raymond & Marie Goldbach Foundation IncMarathon, WI · tax year 2024 1 grant Preselected only $3,209,463 giving
  3. Sonnentag American Foundation IncMarathon, WI · tax year 2024 106 grants Accepts applications $907,667 giving
  4. Marth Foundation LTDMarathon, WI · tax year 2025 1 grant Accepts applications $75,000 giving
  5. Robbins FoundationMarathon, WI · tax year 2025 17 grants Accepts applications $8,000 giving

Foundations that accept applications

Largest first

The return gives an application contact and does not check the preselected-only box.

  1. Sonnentag Foundation LTDMarathon, WI · tax year 2025 Grants listed in an attachment (not in the e-file) Accepts applications $6,371,389 giving
  2. Sonnentag American Foundation IncMarathon, WI · tax year 2024 106 grants Accepts applications $907,667 giving
  3. Marth Foundation LTDMarathon, WI · tax year 2025 1 grant Accepts applications $75,000 giving
  4. Robbins FoundationMarathon, WI · tax year 2025 17 grants Accepts applications $8,000 giving

Giving by cause

Grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Human services1 foundation $97,34017% of the total
  2. Philanthropy and grantmaking1 foundation $89,10015% of the total
  3. Education1 foundation $79,71714% of the total
  4. Jobs and employment1 foundation $45,5008% of the total
  5. Youth development1 foundation $45,2308% of the total
  6. Public affairs1 foundation $39,5007% of the total
  7. 9 other causes $187,27832% of the total

Most active small givers

Foundations with under $1 million in assets, by the number of grants they listed.

  1. Sonnentag American Foundation IncMarathon, WI · tax year 2024 106 grants Accepts applications $907,667 giving
  2. Robbins FoundationMarathon, WI · tax year 2025 17 grants Accepts applications $8,000 giving
  3. Marth Foundation LTDMarathon, WI · tax year 2025 1 grant Accepts applications $75,000 giving