George & Mary Josephine Hamman Foundation

Gave $6.4M in 2025

Houston, Texas · EIN 74-6061447 · Private foundation · Website

Grants paid (2025)$6.4M

Organizations funded1

Typical grant$5,030,000

Total assets$146M

Half of its grants to organizations were between $5,030,000 and $5,030,000.

Does George & Mary Josephine Hamman Foundation fit your nonprofit?

A free check of its grants against your cause and state, starting from Arts & Culture in Texas - change them on the next page. You also see the foundations that fit you best, with the grants that show why.

Check the fit - free

From the return

How to apply

The foundation filed the following application information (Form 990-PF Part XV, tax year 2025):

Contact	Hamman Foundation
Address	3336 Richmond Suite 310, Houston TX 77098
Phone	(713) 522-9891
Form and materials	Written application and financial statements
Deadlines	Monthly for grants Annually, February 16th for scholarships
Restrictions	Grants must be 501c3 Texas organizations Scholarships-Houston area students

Wording as filed; text the foundation typed in capitals is shown in normal case. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.

What it funds

Share of grant lines on the latest return, classified from the purpose each grant states.

Arts & Culture1
Education1
Environment1
Health1

Where it gives

0% of grants went outside Texas.

Texas1

Where it gives most, by cause

Its largest causes in a single state on the latest return. Each page shows the leading foundations that fund the same cause there, with their largest grants.

Grants paid in tax year 2025

Recipient	Location	Purpose	Amount
Name withheld	Houston, TX	Schools, medical arts, conservation	$5,030,000

Does George & Mary Josephine Hamman Foundation fit your nonprofit? Free check against these grants.

Check the fit - free

The return also lists 1 grant to individuals ($1,331,250). We do not publish the names of individual recipients.

Name withheld: we could not match the recipient to an IRS-registered organization, and the name may be a person's. Amount, place and purpose are as filed.

Giving by year

Tax year	Grants paid	Grant lines
2025	$6,361,250	3
2024	$5,907,000	3
2023	$5,620,000	3

Sources

IRS Form 990-PF, tax year 2025, filed May 14, 2026 - IRS e-file batch, object ID 202621349349104532
IRS Tax Exempt Organization Search for EIN 74-6061447
Profile updated Nov 11, 2026

Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.