Maas Foundation

Private foundation · Grantmaker Watertown, SD EIN: 46-0393558

Maas Foundation is a private foundation, based in Watertown, SD. IRS filing data is available for 2019. As of 2019, the organization holds $3.1M in total assets. In 2019, it awarded 8 grants totaling $565K. Net investment income was $863K.

Maas Foundation at a glance

In short: Maas Foundation gave $565K across 8 grants in 2019 (avg $71K), mostly in California. Source: 2019 IRS Form 990-PF.

Annual giving (2019)
$565,000
Grants made (2019)
8
Average grant
$70,625
Median grant
$37,500
Total assets
$3,079,896
Primary geography
California (65% of itemized 2019 grant dollars)
Latest 990 filing
Form 990-PF, 2019 View filing

Data from IRS Form 990-PF, 2019; updated October 2026.

Who Maas Foundation funds

How this funder distributes its grants

Top Recipients

Top 8 recipients in 2019

Sacred Heart Church: $250KSacred Heart Church$250KSacred Heart School: $100KSacred Heart School$100KUniversity of Notre Dame: $100KUniversity of Notre Dame$100KWolf Ridge: $50KWolf Ridge$50KCollege of St Benedict: $25KCollege of St Benedict$25KNet Ministries: $25KNet Ministries$25KEisenhower Medical Center: $10KEisenhower Medical Center$10KScripps Foundation: $5KScripps Foundation$5K

The largest 2019 recipient was Sacred Heart Church ($250K). Together the top 8 received $565K.

Grant Size Distribution

8 grants across all recorded years

4<$50K1$50–100K2$100–250K1$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 4 grants of 8 (50%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

3states

Share of 2019 grant dollars across all 8 itemized grants.

Cities

Palm DesertCollegevilleFinlandNotre DameRancho MirageSan DiegoWest St Paul

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$200K$400K$600K8 grants2019

In 2019 it made 8 grants totaling $565K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
Sacred Heart Church Palm Desert, CAAnnual Fund$250,000
Sacred Heart School Palm Desert, CABuilding Fund$100,000
University of Notre Dame Notre Dame, INEndowment Fund$100,000
Wolf Ridge Finland, MNBuilding Fund$50,000
College of St Benedict Collegeville, MNScholarship Fund$25,000
Net Ministries West St Paul, MNAnnual Fund$25,000
Eisenhower Medical Center Rancho Mirage, CAAnnual Fund$10,000
Scripps Foundation San Diego, CAAnnual Fund$5,000
Your AI grants department

Ready to take the next step with Maas Foundation?

Fully replaces Grant database subscriptions Instrumentl · Foundation Directory · GrantStation & similar

Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsNet Investment IncomeDistributable Amount
2019$3,079,896$864,307$589,317$565,0008$863,082$224,743

Under IRS private-foundation payout rules, Maas Foundation reported a distributable amount of $225K for 2019 — the minimum it must pay out in qualifying distributions.

Leadership & Key People

Officers and directors from IRS filings

Maas Foundation is led by George E. Maas, President & Treasurer on the 2019 filing; none of the 3 officers listed in 2019 report compensation.

Officers on the 2019 filing

  • George E. Maas

    President & Treasurer

    New on the 2019 filing

    No compensation reported

  • Michael Maas

    Vice President

    New on the 2019 filing

    No compensation reported

  • Thomas K. Berg

    Secretary

    New on the 2019 filing

    No compensation reported

Data from IRS Form 990 filings, 2019. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Frequently asked questions about Maas Foundation

How much does Maas Foundation give each year?

Maas Foundation gave $565K across 8 grants in 2019, according to its 2019 IRS Form 990-PF.

What is Maas Foundation's typical grant size?

Maas Foundation's median grant in 2019 was $37,500, and its average grant was $70,625, across 8 grants on its 2019 IRS Form 990-PF.

Where does Maas Foundation give grants?

Maas Foundation gives mostly in California: 65% of the grant dollars itemized on its 2019 IRS Form 990-PF went to recipients there. The next largest states were Minnesota (18%) and Indiana (18%). The most frequent recipient cities were Palm Desert, CA (2 grants).

Does Maas Foundation give general operating support?

Yes: 50% of Maas Foundation's 2019 grants with a stated purpose (4 of 8) were for general or operating support, per its 2019 IRS Form 990-PF.

Who are Maas Foundation's largest grantees?

Maas Foundation's largest 2019 grantees include Sacred Heart Church ($250,000), Sacred Heart School ($100,000) and University of Notre Dame ($100,000), according to its 2019 IRS Form 990-PF. Together they received 80% of its itemized 2019 grant dollars.

How large is Maas Foundation?

Maas Foundation reported $3.1M in total assets on its 2019 IRS Form 990-PF. Its revenue that year was $864K.

How much is Maas Foundation required to give away each year?

Private foundations must generally distribute about 5% of their assets annually. For 2019, Maas Foundation reported a distributable amount of $225K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.

What is Maas Foundation's EIN?

Maas Foundation's EIN (Employer Identification Number) is 46-0393558. IRS Form 990 filing data is available on this page for 2019.

Data last updated October 2026. Sourced from IRS Form 990-PF filings.

Data update history

(2)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2019 (received by the IRS April 28, 2020)
  2. IRS filings on file for fiscal year 2019

Explore Open Grants

Browse active grant opportunities in Maas Foundation's focus areas in our free grants database

Similar Funders

Funders with grantees in common

C & R Newman Family Foundation

Encino, CA

The foundation funds organizations working in health, education, arts, youth programs, and human services, primarily in California. Its 2025 grants ranged from $500 to $1,061,000, with a median of $10,000. It gives only to preselected charities and does not accept unsolicited requests.

Philanthropy, Voluntarism & Grantmaking

Assets

$4.3M

Grants

33

Total Given

$1.6M

Gary Broad Foundation

Los Angeles, CA

The Gary Broad Foundation funds hunger relief, animal welfare, education and youth development, health care, wildlife conservation, and community services, with most funding going to California and some to New York, Kentucky, Hawai‘i, and the District of Columbia. Its 2025 grants ranged from $10,000 to $50,000, with a median of $30,000. It gives only to preselected organizations and does not accept unsolicited requests.

Philanthropy, Voluntarism & Grantmaking

Assets

$6.7M

Grants

29

Total Given

$835K

The Jess & Rose Kortz & Pearle RAE

Denver, CO

The foundation supports a varied mix of charitable work, including arts, health, and community services, with most of its 2024 giving going to California and Colorado organizations. It awarded 48 grants totaling $259,630 in 2024; grants ranged from $250 to $72,350, with a median of $1,566. It funds only preselected organizations and does not accept unsolicited requests.

Assets

$4.5M

Grants

48

Total Given

$260K

The Reed L Harman & Nan M Harman

Rolling Hills Estates, CA

The foundation supports a range of charitable organizations, including medical, community, scholarship, education, and conservation groups, primarily in California. Its 2024 grants ranged from $28 to $30,000, with a median of $5,000. It gives only to preselected organizations and does not accept unsolicited requests.

Assets

$4.5M

Grants

32

Total Given

$176K

Fairchild Martindale Foundation

Corona, CA

The foundation supports medical care and research, education, and general charitable purposes, with most 2025 grant dollars going to California organizations. Its 34 grants ranged from $5,000 to $135,000, with a median of $17,500; it gives only to preselected organizations and does not accept unsolicited requests.

Assets

$11.4M

Grants

34

Total Given

$1.1M

Connie and Bob Lurie Foundation Inc

Redwood City, CA

The foundation funds a varied mix of health care, research, education, and social services, with 93% of its 2024 grant dollars going to California. Its 2024 grants ranged from $100 to $9 million, with a median of $19,630. It supports only preselected charitable organizations and does not accept unsolicited requests.

Assets

$80.1M

Grants

77

Total Given

$21.4M

More similar funders

More Funders in South Dakota

The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open

Figures come from Maas Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.

Maas Foundation down — hundreds of funders to go?

Want AI to do this for you?