Mount Rainier above forested ridges in Washington

Form 990-PFTax year 2025EIN 91-2006733

The Kleo Foundation

A private foundation in Woodinville, WA. Its return for tax year 2025 lists 12 grants and $59,500 paid in grants.

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

Accepts applications

The return gives an application contact and rules, as below.

Contact
Leo Notenboom
17346 NE 147th Street
Woodinville, WA 98072
(206) 954-4367
Form and materials
Written letter of application
Deadlines
None
Restrictions
None

Assets and giving by year

8 returns on file
Grants paid by tax year. The latest year is in blue.
  • Tax year 2025

    $59,500

    Grants listed
    12
    Assets, end of year
    $0
  • Tax year 2024

    $44,753

    Grants listed
    10
    Assets, end of year
    $61,530
  • Tax year 2023

    $53,000

    Grants listed
    14
    Assets, end of year
    $91,266
  • Tax year 2022

    $103,000

    Grants listed
    14
    Assets, end of year
    $152,587
  • Tax year 2021

    $110,436

    Grants listed
    18
    Assets, end of year
    $215,592
  • Tax year 2020

    $91,181

    Grants listed
    16
    Assets, end of year
    $312,301
  • Tax year 2019

    $54,400

    Grants listed
    15
    Assets, end of year
    $202,707
  • Tax year 2018

    $79,711

    Grants listed
    14
    Assets, end of year
    $220,658

Grants paid in 2025

12 grants, largest first

As listed on the return. Grants to individuals show as “Individual”, with purpose and amount only.

  1. HopelinkRedmond, WA

    Community support

    $25,000
  2. Individual

    Children in distress

    $10,000
  3. Christian Health Care CenterLynden, WA

    Human welfare

    $10,000
  4. Individual

    [individual] RESCUE

    $5,000
  5. Center for Biology DiversityTuscon, AZ

    Human welfare

    $2,500
  6. Individual

    Animal welfare

    $1,000
  7. Feral Cat Spayneuter ProjectLynnwood, WA

    Animal welfare

    $1,000
  8. LifewireBellevue, WA

    Domestic violence recovery

    $1,000
  9. Individual

    Animal welfare

    $1,000
  10. Old Dog HavenOak Harbor, WA

    Animal welfare

    $1,000
  11. Electronic Frontier FoundationSan Francisco, CA

    Defends civil liberties online

    $1,000
  12. Individual

    SUPPORTS [individual] JOURNALISM

    $1,000

Where the money goes

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

  1. Human services2 grants $26,00068% of the total
  2. Health1 grant $10,00026% of the total
  3. Animals2 grants $2,0005% of the total

By State

Grants to organizations with a US address, latest year.

  1. Washington5 grants $38,000
  2. Arizona1 grant $2,500
  3. California1 grant $1,000

Officers, directors and trustees

2 people as filed

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

  • Leo NotenboomTrustee Hours 0.25Pay $0
  • Kathy NotenboomTrustee Hours 0Pay $0

The return

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