Mount Rainier above forested ridges in Washington
Foundation Lookup

Form 990-PFTax year 2025EIN 91-1703239

Katherine Olson Foundation

A private foundation in Seattle, WA. Its return for tax year 2025 lists 3 grants and $21,000 paid in grants.

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

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

    $21,000

    Grants listed
    3
    Assets, end of year
    $221,280

  • Tax year 2024

    $31,000

    Grants listed
    5
    Assets, end of year
    $223,750

  • Tax year 2023

    $12,000

    Grants listed
    3
    Assets, end of year
    $235,866

  • Tax year 2022

    $15,000

    Grants listed
    5
    Assets, end of year
    $248,765

  • Tax year 2021

    $23,000

    Grants listed
    7
    Assets, end of year
    $261,400

  • Tax year 2020

    $20,000

    Grants listed
    11
    Assets, end of year
    $254,812

  • Tax year 2019

    $20,000

    Grants listed
    13
    Assets, end of year
    $272,464

  • Tax year 2018

    $21,600

    Grants listed
    13
    Assets, end of year
    $289,196

Grants paid in 2025

3 grants, largest first

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

  1. Individual

    Support of public charity

    $10,000
  2. Cascade Public MediaSeattle, WA

    Support of public charity programs

    $10,000
  3. ALS AssociationArlington, VA

    Support of public charity programs

    $1,000

Where the money goes

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

  1. Arts and culture1 grant $10,000100% of the total

By State

Grants to organizations with a US address, latest year.

  1. Washington1 grant $10,000
  2. Virginia1 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.

  • Carol OlsonDirector Hours 1Pay $0
  • Tom OlsonDirector Hours 1Pay $0

The return

More foundations

Similar foundations

Same main cause (arts and culture), giving between a quarter and four times this foundation’s where possible, nearby first.

  1. Altom Carlson FoundationSeattle, WA 9 grants Preselected only $25,617 giving
  2. William and Mary Little FoundationSeattle, WA 25 grants Preselected only $54,050 giving
  3. Seattle Peoples FundSeattle, WA 16 grants Preselected only $56,000 giving
  4. The Breneman Jaech FoundationSeattle, WA 3 grants Preselected only $62,500 giving
  5. Schuster FoundationSeattle, WA 26 grants Preselected only $64,342 giving