The Gordon and Marilyn Macklin
The Gordon and Marilyn Macklin is a private foundation, based in N Bethesda, MD. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $14.3M in total assets. In 2025, it awarded 2 grants totaling $2.8M. Net investment income was $2.6M.
The Gordon and Marilyn Macklin at a glance
In short: The Gordon and Marilyn Macklin gave $2.8M across 2 grants in 2025 (avg $1.4M), mostly in Maryland. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $2,784,103
- +30.6% vs 2024
- Grants made (2025)
- 2
- -33.3% vs 2024
- Average grant
- $1,392,052
- +96.0% vs 2024
- Median grant
- $1,392,052
- Total assets
- $14,312,133
- -1.7% vs 2024
- Primary geography
- Maryland (80% 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 Gordon and Marilyn Macklin funds
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2025
The largest 2025 recipient was Johns Hopkins Ataxia Center ($2.2M). Together the top 2 received $2.8M.
Grant Size Distribution
21 grants across all recorded years
The most common grant size was in the $100–250K range: 6 grants of 21 (29%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 2 itemized grants.
States
Cities
How The Gordon and Marilyn Macklin gives
- Giving grew 70% from 2022 to 2025. Method
- In 2025 it paid out 107% 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 2020 to 2025, annual grant giving ranged from $1.6M (2022) to $2.8M (2025). In 2025 it made 2 grants totaling $2.8M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Johns Hopkins Ataxia Center Baltimore, MD | Johns hopkins university - funding of johns hopkins ataxia center - 2026-2030 | $2,223,000 |
| Medstar National Rehabilitation Hospital Washington, DC | 4-year peer mentor and wellness program challenge grant for spinal cord injured patients | $561,103 |
Ready to take the next step with The Gordon and Marilyn Macklin?
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 | $14,312,133 | $2,826,167 | $3,080,031 | $2,784,103 | 2 | $2,845,539 | $2,602,891 | $2,657,282 |
| 2024 | $14,565,997 | $914,640 | $2,424,613 | $2,131,007 | 3 | $2,194,397 | $691,783 | $2,388,556 |
| 2023 | $16,075,970 | $809,388 | $2,417,905 | $2,127,043 | 5 | $2,186,918 | $586,958 | $2,058,396 |
| 2022 | $17,684,487 | $866,348 | $1,928,762 | $1,634,036 | 6 | $1,692,118 | $644,363 | $2,138,143 |
| 2021 | $18,746,901 | $884,282 | $2,465,961 | $2,177,553 | 5 | — | $662,202 | $2,218,943 |
| 2020 | $20,328,580 | $711,712 | $2,163,169 | $1,880,000 | 5 | — | $490,760 | $1,831,673 |
Under IRS private-foundation payout rules, The Gordon and Marilyn Macklin reported a distributable amount of $2.7M for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Gordon and Marilyn Macklin is led by Donald D. Dawn, President & Director on every filing since 2020 — the only officer listed, and compensated.
Officers on the 2025 filing
Donald D. Dawn
President & Director
On filings since 2020
32 hrs/week
$260K (2020) → $260K (2025)
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $260K, to Donald D Dawn (President, Director).
Frequently asked questions about The Gordon and Marilyn Macklin
How much does The Gordon and Marilyn Macklin give each year?
The Gordon and Marilyn Macklin gave $2.8M across 2 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $2.1M across 3 grants.
How large is The Gordon and Marilyn Macklin?
The Gordon and Marilyn Macklin reported $14.3M in total assets on its 2025 IRS Form 990-PF. It paid out $2.8M in qualifying distributions that year, against a required minimum of $2.7M (roughly 5% of its investment assets).
Where does The Gordon and Marilyn Macklin operate?
The Gordon and Marilyn Macklin has awarded grants in California, Connecticut, District of Columbia, Florida, Maryland, Minnesota, New York, Pennsylvania, Virginia.
What is The Gordon and Marilyn Macklin's EIN?
The Gordon and Marilyn Macklin's EIN (Employer Identification Number) is 52-2205133. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2025
Live grants for the work The Gordon and Marilyn Macklin funds
Philanthropy, Voluntarism & Grantmaking Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in The Gordon and Marilyn Macklin's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
The Cyrus Katzen Foundation Inc
Baileys Crossroads, VA
The Cyrus Katzen Foundation funds health care and medical research, children’s services, arts and culture, and community and religious organizations. Its 2025 grants ranged from $2,000 to $812,500, with a median of $10,000, and went mainly to organizations in Washington, DC, and Maryland. It accepts requests: applicants should submit a letter describing the organization and grant purpose, along with proof of tax-exempt status; no deadline is listed.
Assets
$35.7M
Grants
35
Total Given
$1.7M
PKD Foundation
Kansas City, MO
The PKD Foundation funds PKD-related research, care-team services, education, and patient support, primarily through grants to U.S. universities, medical centers, and research institutes; it also gives special consideration to some research partnerships in Canada and Australia. Recent grants typically had a median award of $70,000, while research grants are structured at $120,000 per year for two years; applicants may submit a pre-application, but only invited applicants can submit a full research application.
Assets
$37.0M
Grants
38
Total Given
$2.6M
Sherman Family Foundation
Baltimore, MD
The Sherman Family Foundation funds education, community and family services, arts and culture, public media, youth homelessness, and related causes, with most grants going to Maryland organizations. Its 2024 grants ranged from $500 to $2.9 million, with a median of $50,000. It funds only preselected charitable organizations and does not accept unsolicited requests.
Assets
$73.3M
Grants
118
Total Given
$19.0M
Judy and Peter Blum Kovler Foundation
Washington, DC
The foundation’s 2024 grants supported organizations working in civic engagement, elections, education and public media, health care, and arts and culture, with most funding going to Washington, DC, and additional grants in Virginia, Maryland, New York, and Massachusetts. Grants ranged from $500 to $864,416, with a median of $10,000. It considers written proposals and does not restrict giving to preselected organizations; proposals are due by November 1 for consideration that year.
Assets
$28.6M
Grants
142
Total Given
$5.3M
American Medical Association
Chicago, IL
The AMA funds medical education and training, research, public health, health equity, and initiatives to improve health outcomes, primarily through support for charities, medical associations, educational institutions, and government educational institutions. In 2024, awards ranged from $250 to $375,000, with a median of $30,000; its stated programs include a U.S.-based physician-led micro-grant opportunity, but the profile does not state whether it accepts unsolicited requests generally.
Assets
$1.5B
Grants
142
Total Given
$7.3M
Children's Tumor Foundation
New York, NY
The Children’s Tumor Foundation funds early-stage research, clinical studies, and related work to improve care for people affected by neurofibromatosis and schwannomatosis. In 2024, its 50 grants ranged from $5,095 to $449,795, with a median of about $39,800, and went to recipients across the U.S.; its Young Investigator Award is described as international. The profile does not state whether it accepts unsolicited requests.
Assets
$30.7M
Grants
50
Total Given
$4.2M
More similar funders
More Funders in Maryland
The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from The Gordon and Marilyn Macklin'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 Gordon and Marilyn Macklin down — hundreds of funders to go?