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Form 990-PFTax year 2025EIN 39-1707934

Marjorie Siebert Aylen Foundation

A private foundation in Milwaukee, WI. Its return for tax year 2025 lists 9 grants and $195,000 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. It still lists the details below.

Contact
Frank W Bastian
111 E Wisconsin Ave Ste 1800
Milwaukee, WI 53202
(414) 276-3400
Form and materials
Application form & IRS determination letter for section 501(c)(3) status
Deadlines
July 31st of each year
Restrictions
Emphasis on milwaukee metropolitan area

Assets and giving by year

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

  • Tax year 2025

    $195,000

    Grants listed
    9
    Assets, end of year
    $2,753,828

  • Tax year 2024

    $175,000

    Grants listed
    11
    Assets, end of year
    $2,645,617

  • Tax year 2023

    $75,000

    Grants listed
    7
    Assets, end of year
    $2,599,891

  • Tax year 2022

    $175,000

    Grants listed
    9
    Assets, end of year
    $2,649,573

  • Tax year 2021

    $120,000

    Grants listed
    7
    Assets, end of year
    $2,702,845

  • Tax year 2020

    $137,500

    Grants listed
    10
    Assets, end of year
    $2,480,156

  • Tax year 2019

    $115,500

    Grants listed
    9
    Assets, end of year
    $2,436,552

  • Tax year 2018

    $143,000

    Grants listed
    9
    Assets, end of year
    $2,410,921

Grants paid in 2025

9 grants, largest first

As listed on the return.

  1. Historic Haymarket MilwaukeeMilwaukee, WI

    General

    $50,000
  2. Uwm Research FoundationMilwaukee, WI

    General

    $30,000
  3. Planned Parenthood of WisconsinMilwaukee, WI

    General

    $25,000
  4. Univ of Wi FoundationMadison, WI

    General

    $25,000
  5. Children's Hospital of WiMilwaukee, WI

    General

    $15,000
  6. Life NavigatorsMilwaukee, WI

    General

    $15,000
  7. Family Promise of Ozaukee CtyPort Washington, WI

    General

    $15,000
  8. Hunger Task ForceMilwaukee, WI

    General

    $10,000
  9. WuwumMilwaukee, WI

    General

    $10,000

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 $50,00048% of the total
  2. Community development1 grant $30,00029% of the total
  3. Health1 grant $25,00024% of the total

By State

Grants to organizations with a US address, latest year.

  1. Wisconsin9 grants $195,000

Officers, directors and trustees

1 person as filed

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

  • Frank W BastianDIRECTOR Hours 1Pay $0

The return

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