Mount Rainier above forested ridges in Washington
Foundation Lookup

Form 990-PFTax year 2025EIN 85-3903837

Gyroid Foundation

A private foundation in Renton, WA. Its return for tax year 2025 lists 1 grant and $300 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

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

  • Tax year 2025

    $300

    Grants listed
    1
    Assets, end of year
    $3,228

  • Tax year 2024

    $575

    Grants listed
    1
    Assets, end of year
    $4,364

  • Tax year 2023

    $0

    Grants listed
    1
    Assets, end of year
    $6,319

  • Tax year 2022

    $501

    Grants listed
    1
    Assets, end of year
    $7,705

  • Tax year 2021

    $119

    Grants listed
    1
    Assets, end of year
    $8,791

  • Tax year 2020

    $560

    Grants listed
    1
    Assets, end of year
    $9,759

Grants paid in 2025

1 grant, largest first

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

  1. Individual

    Alan Schoen Award for Outstanding Contributions to the Understanding of Triply Periodic Minimal Surfaces and Gyroids.

    $300

Officers, directors and trustees

3 people as filed

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

  • Martha DunhamPresident Hours 2Pay $0
  • Rainer GlaserDirector Hours 1Pay $0
  • Stephen JohnsonDirector Hours 1Pay $0

The return

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