The Mountz Family Foundation
The Mountz Family Foundation is a private foundation, based in Needham, MA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $934K in total assets. In 2025, it awarded 9 grants totaling $362K. Net investment income was $143K.
The Mountz Family Foundation at a glance
In short: The Mountz Family Foundation gave $362K across 9 grants in 2025 (avg $40K), mostly in Massachusetts. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $361,700
- +0.6% vs 2024
- Grants made (2025)
- 9
- -10.0% vs 2024
- Average grant
- $40,189
- +11.7% vs 2024
- Median grant
- $12,500
- Total assets
- $933,799
- -19.3% vs 2024
- Primary geography
- Massachusetts (98% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who The Mountz Family Foundation funds
How this funder distributes its grants
Top Recipients
Top 9 recipients in 2025
The largest 2025 recipient was MIT ($280K). Together the top 9 received $362K.
Grant Size Distribution
48 grants across all recorded years
The most common grant size was under $50K: 44 grants of 48 (92%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 9 itemized grants.
Cities
How The Mountz Family Foundation gives
- Giving grew 67% from 2022 to 2025. Method
- In 2025 it paid out 566% of its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $60K (2021) to $362K (2025). In 2025 it made 9 grants totaling $362K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| MIT Cambridge, MA | General | $280,000 |
| Deerfield Academy Deerfield, MA | General | $25,000 |
| Boston Children's Hospital Boston, MA | General | $22,200 |
| Carroll School Lincoln, MA | General | $12,500 |
| The Fenn School Concord, MA | General | $12,500 |
| National Inventors Hall of Fame North Canton, OH | General | $5,000 |
| The Umbrella Arts Center Concord, MA | General | $2,500 |
| Khan Academy Mountain View, CA | General | $1,000 |
| Pan Mass Challenge Needham, MA | General | $1,000 |
Ready to take the next step with The Mountz Family Foundation?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $933,799 | $151,335 | $369,648 | $361,700 | 9 | $361,700 | $143,387 | $63,940 |
| 2024 | $1,156,751 | $128,032 | $368,555 | $359,700 | 10 | $359,700 | $119,177 | $74,585 |
| 2023 | $1,428,631 | $74,668 | $244,357 | $236,000 | 8 | $236,000 | $66,311 | $85,957 |
| 2022 | $1,562,165 | $107,389 | $225,294 | $216,300 | 8 | $216,300 | $98,395 | $92,473 |
| 2021 | $1,682,662 | $89,937 | $71,362 | $60,020 | 13 | $60,020 | $78,595 | $100,376 |
| 2020 | $1,664,906 | $-15,456 | $264,231 | $251,780 | 9 | — | $13,233 | $93,417 |
| 2019 | $1,941,775 | $84,905 | $247,471 | $232,971 | 13 | — | $70,405 | $103,191 |
Under IRS private-foundation payout rules, The Mountz Family Foundation reported a distributable amount of $64K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Mountz Family Foundation's 2025 filing lists 2 officers; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Michael Mountz
Trustee
On filings since 2019
1 hr/week
No compensation reported
Tiffany Mountz
Trustee
On filings since 2019
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "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 The Mountz Family Foundation
How much does The Mountz Family Foundation give each year?
The Mountz Family Foundation gave $362K across 9 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $360K across 10 grants.
What is The Mountz Family Foundation's typical grant size?
The Mountz Family Foundation's median grant in 2025 was $12,500, and its average grant was $40,189, across 9 grants on its 2025 IRS Form 990-PF.
Where does The Mountz Family Foundation give grants?
The Mountz Family Foundation gives mostly in Massachusetts: 98% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Concord, MA (2 grants).
Does The Mountz Family Foundation give general operating support?
Yes: 100% of The Mountz Family Foundation's 2025 grants with a stated purpose (9 of 9) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are The Mountz Family Foundation's largest grantees?
The Mountz Family Foundation's largest 2025 grantees include MIT ($280,000), Deerfield Academy ($25,000) and Boston Children's Hospital ($22,200), according to its 2025 IRS Form 990-PF. Together they received 90% of its itemized 2025 grant dollars.
How large is The Mountz Family Foundation?
The Mountz Family Foundation reported $934K in total assets on its 2025 IRS Form 990-PF. It paid out $362K in qualifying distributions that year, against a required minimum of $64K (roughly 5% of its investment assets).
What is The Mountz Family Foundation's EIN?
The Mountz Family Foundation's EIN (Employer Identification Number) is 46-1547058. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS July 13, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 13, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 13, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 12, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 14, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 12, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 18, 2026)
- IRS filings on file for fiscal years 2019–2024
Explore Open Grants
Browse active grant opportunities in The Mountz Family Foundation's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
Duke Energy Foundation
Charlotte, NC
The Duke Energy Foundation funds workforce and local economic development, disaster resilience, conservation, clean water, and economic opportunity in North Carolina, South Carolina, Florida, Ohio, Kentucky, and Indiana. Its 2024 grants had a median of $25,000; applications for grants of $20,000 or less are accepted year-round, after applicants discuss proposals with a state representative.
Assets
$1.9M
Grants
41
Total Given
$25.6M
Ronald M Ansin Foundation
Ashburnham, MA
The Ronald M Ansin Foundation funds housing, community development, health care, food relief, mental health, education, and social innovation, with 2023 grants ranging from $5,000 to $30,000. Its grantees have been based in Massachusetts, Virginia, and New York, with several in Massachusetts. It accepts unsolicited requests in writing, with financial and program information and proof of 501(c)(3) status.
Assets
$2.6M
Grants
13
Total Given
$179K
Gannett Foundation Inc
New York, NY
Gannett Foundation’s 2025 grants supported a range of organizations, with listed awards generally between $1,500 and $2,500, though the available figures do not establish a typical grant size or geographic focus. The foundation has wound down: its 2026 filing reports no grants or assets, and no current application process or acceptance of unsolicited requests is stated.
Assets
—
Grants
32
Total Given
$65K
The Frederic C Hamilton
Centennial, CO
The Frederic C Hamilton funds medical research and health care, education, wildlife conservation, human services, and public safety, with the largest share of 2024 grants going to Colorado, followed by Florida, New York, Texas, and Maine. Its 2024 grants ranged from $1,000 to $500,000, with a median of $20,000. It does not accept unsolicited requests and gives only to preselected charitable organizations.
Assets
$29.8M
Grants
58
Total Given
$2.1M
Valhalla Foundation
Woodside, CA
The Valhalla Foundation funds early childhood and K–12 education, data science education, medical research and talent, environmental innovation, and collaborative philanthropy, with 2024 grants reaching organizations in multiple states and Washington, DC. Its 2024 grants ranged from $5,250 to $10 million, with a median of $650,000. It funds only preselected charitable organizations and does not accept unsolicited requests.
Assets
$527.1M
Grants
80
Total Given
$131.7M
Motorola Solutions Foundation
Chicago, IL
The Motorola Solutions Foundation funds first-responder programs and technology and engineering education, especially for under-resourced communities; its 2025 grants had a median of $35,000. It supports organizations worldwide, with priority for communities where Motorola Solutions operates, and accepts unsolicited requests through an annual letter-of-inquiry process, with full applications by invitation.
Assets
$1.2M
Grants
213
Total Given
$12.6M
More similar funders
More Funders in Massachusetts
The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from The Mountz Family 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.
The Mountz Family Foundation down — hundreds of funders to go?