Private foundation · EIN 20-3538795 · Greenwich, Connecticut · Philanthropy & grantmaking

Mattis Family Foundation

Should you approach them?

Yes, approach them if you're in Connecticut. The foundation accepts applications (NONE) and its median grant is $15K.

From the 2025 Form 990-PF: 8 grants paid, $280K total, median $15K. 75% of grants stayed in Connecticut. Stated restrictions: NONE

Accepts applications
Yes
per 990-PF Part XV
Grants paid, 2025
8
$280K
Median grant
$15K
Stays in CT
75%
of grants
Deadline
NONE
Assets
$3.4M

How to apply

Written letter Contact: Peter D Mattis, 77 Zaccheus Mead Lane, Greenwich, Ct, 6467083013 Deadlines: NONE Restrictions: NONE

Quoted from Part XV of the foundation's 2025 Form 990-PF; the full text is in the filing. Confirm on the foundation's website before you write.

Grants paid in 2025

8 grants, all shown · from Form 990-PF Part XV

RecipientPurposeAmount
Greenwich Country Day SchoolGreenwich, CTEducation$100K
Eagle Hill SchoolGreenwich, CTEducation$80K
Kripalu Center for Yoga & HealthStockbridge, MASpiritual development$50K
Burning Man ProjectSan Francisco, CAArt, music and innovation$20K
Greenwich LibraryGreenwich, CTEducation & community outreach programs$10K
Neighbor to NeighborGreenwich, CTFood bank$10K
Bruce MuseumGreenwich, CTEducation, culture, art$5,000
Greenwich Historical SocietyCos Cob, CTEducation$5,000

By state: Connecticut 6 · Massachusetts 1 · California 1

About this foundation

Mattis Family Foundation is a private grantmaking foundation in Greenwich, Connecticut, administered in care of Peter Mattis, tax-exempt since 2005. Private foundations must pay out roughly 5% of their assets each year, mostly as grants to 501(c)(3) public charities.

All filings on ProPublica

Does Mattis Family Foundation accept grant applications?

Yes. On its 2025 Form 990-PF the foundation indicates it accepts applications. Written letter Deadlines: NONE.

How much does Mattis Family Foundation give each year?

In tax year 2025 it paid $280K across 8 grants, a median of $15K.

Where does Mattis Family Foundation give?

Connecticut (6 grants), Massachusetts (1 grants), California (1 grants), per its latest filing.

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