The Diomedes Foundation | Foundation Profile

GrantBay analyzes IRS Form 990-PF data to help grant seekers find fit funders like The Diomedes Foundation. Data shown is extracted from Form 990-PF filings.

EIN: 46-1451480

Foundation Overview

Based in Concord, MA, The Diomedes Foundation has awarded 120 grants totaling $3,841,007 to organizations in Massachusetts, California and 4 other states, plus international recipients. Individual grants range from $100 to $250,000, with a median award of $10,000.

Latest Tax Year
2024
Total Giving (all years)
$3,841,007
Total Assets
$2,839,602
Median Grant (all grants)
$10,000

Latest Form 990-PF Snapshot

Total Grants
14
Median Grant
$17,750
% Median Grant Growth
+78% (vs previous year)
Data extracted from IRS Form 990-PF filings. Last filing year: February 2026

Foundation Intelligence

Advanced analytics and strategic insights to help nonprofit organizations assess grant opportunities and optimize their application strategies

New Applicant Friendliness
Balanced Approach: 50%

7 of 14 recipients (50%) were new grantees. Foundation maintains loyal partnerships while remaining open to qualified new applicants with strong proposals.

Geographic Focus
Massachusetts

72% of all grants are concentrated in Massachusetts, demonstrating highly focused geographic giving. This foundation prioritizes deep community impact in its primary service area. Within Massachusetts, funding concentrates in Concord (52%), Boston (22%), Arlington (9%).

Funding Trajectory
+80%

Strong 80% growth in annual giving over 8 years indicates expanding philanthropic capacity and increasing opportunities for grant seekers. This upward trajectory suggests growing foundation resources and commitment.

Program Areas
General Purposes

Highly focused on general purposes with 100% of funding dedicated to this sector. This specialization indicates deep expertise and committed investment in the field.

Where is The Money Going?

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Grants & Funding

Analyzing past grantees provides valuable insights into The Diomedes Foundation's funding preferences, organizational priorities, and grant making patterns. This historical data helps potential applicants understand the foundation's strategic focus and identify successful funding approaches.

Name Amount Location Purpose Year
Concord250 $25,000 Concord, MA, US Charitable 2024
Concord Center For The Visual Arts $10,000 Concord, MA, US Charitable 2024
Concord Free Public Library Corp $20,000 Concord, MA, US Charitable 2024
Island Housing Trust $25,000 Vineyard Haven, MA, US Charitable 2024
St Paul's School $10,000 Concord, NH, US Charitable 2024
Harvard Varsity Club Inc $25,000 Boston, MA, US Charitable 2024
Deaconess Abundant Life Communities $5,000 Concord, MA, US Charitable 2024
Emerson Health Foundation $115,000 Concord, MA, US Charitable 2024
Northeast Harbor Sailing School $50,000 Northeast Harbor, ME, US Charitable 2024
The Childrens Room $10,000 Arlington, MA, US Charitable 2024
Trustees Of Hamilton College $35,000 Clinton, NY, US Charitable 2024
California Community Foundation $15,500 Los Angeles, CA, US Charitable 2024
The Neighborhood House $5,000 San Diego, CA, US Charitable 2024
Axium Education $10,000 Zithulele, Foreign, SF Charitable 2024
California Community Foundation $15,000 Los Angeles, CA, US Charitable 2023
Emerson Hospital $110,000 Concord, MA, US Charitable 2023
Harvard Varsity Club Inc $25,000 Boston, MA, US Charitable 2023
Umbrella Arts Center $5,000 Concord, MA, US Charitable 2023
Middlesex School $10,000 Concord, MA, US Charitable 2023
The Childrens Room $10,000 Arlington, MA, US Charitable 2023
Trustees Of Hamilton College $10,000 Clinton, NY, US Charitable 2023
Northeast Harbor Sailing School $50,000 Northeast Harbor, ME, US Charitable 2023
American Promise Inc $10,000 Concord, MA, US Charitable 2023
Carnegie Initiative $10,000 Lexington, MA, US Charitable 2023
Concord Fee Public Library Corp $2,500 Concord, MA, US Charitable 2023
Harvard College Fund $100,000 Boston, MA, US Charitable 2023
Mt Desert Community Development Corp $10,000 Northeast Harbor, ME, US Charitable 2023
California Community Foundation $15,000 Los Angeles, CA, US Charitable 2023
Emerson Hospital $110,000 Concord, MA, US Charitable 2023
Harvard Varsity Club Inc $25,000 Boston, MA, US Charitable 2023
Umbrella Arts Center $5,000 Concord, MA, US Charitable 2023
Middlesex School $10,000 Concord, MA, US Charitable 2023
The Childrens Room $10,000 Arlington, MA, US Charitable 2023
Trustees Of Hamilton College $10,000 Clinton, NY, US Charitable 2023
Northeast Harbor Sailing School $50,000 Northeast Harbor, ME, US Charitable 2023
American Promise Inc $10,000 Concord, MA, US Charitable 2023
Carnegie Initiative $10,000 Lexington, MA, US Charitable 2023
Concord Fee Public Library Corp $2,500 Concord, MA, US Charitable 2023
Harvard College Fund $100,000 Boston, MA, US Charitable 2023
Mt Desert Community Development Corp $10,000 Northeast Harbor, ME, US Charitable 2023
Sports Museum Of Ne Inc $2,850 Boston, MA, US Charitable 2022
Positive Coaching Alliance $5,000 Okland, CA, US Charitable 2022
Middlesex School $31,135 Concord, MA, US Charitable 2022
Wonmen's Sport Foundation $25,000 New York, NY, US Charitable 2022
Island Housing Trust $25,000 Mount Desert, ME, US Charitable 2022
California Community Foundation $15,000 Los Angeles, CA, US Charitable 2022
Ubuntu Global Connections Inc $5,000 Concord, MA, US Charitable 2022
Harvard Varsity Club Inc $25,000 Boston, MA, US Charitable 2022
President And Fellow Of Harvard College $75,000 Cambridge, MA, US Charitable 2022
Emerson Hospital $100,000 Concord, MA, US Charitable 2022
The Childrens Room $10,000 Arlington, MA, US Charitable 2022
Sports Museum Of Ne Inc $2,850 Boston, MA, US Charitable 2022
Positive Coaching Alliance $5,000 Okland, CA, US Charitable 2022
Middlesex School $31,135 Concord, MA, US Charitable 2022
Wonmen's Sport Foundation $25,000 New York, NY, US Charitable 2022
Island Housing Trust $25,000 Mount Desert, ME, US Charitable 2022
California Community Foundation $15,000 Los Angeles, CA, US Charitable 2022
Ubuntu Global Connections Inc $5,000 Concord, MA, US Charitable 2022
Harvard Varsity Club Inc $25,000 Boston, MA, US Charitable 2022
President And Fellow Of Harvard College $75,000 Cambridge, MA, US Charitable 2022
Emerson Hospital $100,000 Concord, MA, US Charitable 2022
The Childrens Room $10,000 Arlington, MA, US Charitable 2022
Sports Museum Of Ne Inc $2,850 Boston, MA, US Charitable 2022
Positive Coaching Alliance $5,000 Okland, CA, US Charitable 2022
Middlesex School $31,135 Concord, MA, US Charitable 2022
Wonmen's Sport Foundation $25,000 New York, NY, US Charitable 2022
Island Housing Trust $25,000 Mount Desert, ME, US Charitable 2022
California Community Foundation $15,000 Los Angeles, CA, US Charitable 2022
Ubuntu Global Connections Inc $5,000 Concord, MA, US Charitable 2022
Harvard Varsity Club Inc $25,000 Boston, MA, US Charitable 2022
President And Fellow Of Harvard College $75,000 Cambridge, MA, US Charitable 2022
Emerson Hospital $100,000 Concord, MA, US Charitable 2022
The Childrens Room $10,000 Arlington, MA, US Charitable 2022
Citizen Schools $2,500 Boston, MA, US Charitable 2021
Concord Free Public Library $100,000 Concord, MA, US Charitable 2021
Concord Museum $1,000 Concord, MA, US Charitable 2021
Concord-carlisle Community Chest $5,000 Concord, MA, US Charitable 2021
Harlem Lacrosse $10,000 New York, NY, US Charitable 2021
Harvard University $11,375 Cambridge, MA, US Charitable 2021
Harvard Varsity Club $10,000 Boston, MA, US Charitable 2021
Island Housing Trust $50,000 West Tisbury, MA, US Charitable 2021
Lookup Incubator Inc $5,000 Concord, MA, US Charitable 2021
Middlesex School $25,000 Concord, MA, US Charitable 2021
Steppingstone Foundation $10,000 Boston, MA, US Charitable 2021
The Childrens Room $10,000 Arlington, MA, US Charitable 2021
The Umbrella Community Arts Center $5,000 Concord, MA, US Charitable 2021
Thinkgive $1,000 Concord, MA, US Charitable 2021
Town Of Concord $5,000 Concord, MA, US Charitable 2021
Usa Hockey Foundation $25,000 Colorado Springs, CO, US Charitable 2021
Hasty Pudding Theatricals $5,000 Cambridge, MA, US Charitable 2021
Theodora Park Foundation Co Carlos Byrne Bny Mellon Charitable Gift Fund $100,000 Boston, MA, US Charitable 2021
California Community Foundation $7,500 Los Angeles, CA, US Charitable 2021
President And Fellows Of Harvard College $75,000 Boston, MA, US Charitable 2021
Harvard College Fund Co Harvard University $35,000 Boston, MA, US Charitable 2021
Communities For Restorative Justice $5,000 Concord, MA, US Charitable 2020
Concord Museum $1,000 Concord, MA, US Charitable 2020
Harlem Lacrosse $25,000 New York, NY, US Charitable 2020
Harvard University $100,000 Cambridge, MA, US Charitable 2020
Middlesex School $36,332 Concord, MA, US Charitable 2020
Mount Desert Nursing Association $100 Northeast Harbor, ME, US Charitable 2020
Northeast Harbor Library $500 Northeast Harbor, ME, US Charitable 2020
Rockend Art Barn $1,000 Northeast, ME, US Charitable 2020
The Neighborhood House $1,000 Northeast Harbor, ME, US Charitable 2020
The Scholarship Fund Of Concord $1,000 Concord, MA, US Charitable 2020
Lookup Incubator Inc $1,000 Concord, MA, US Charitable 2020
Citizen Schools $10,000 Boston, MA, US Charitable 2020
The Childrens Room $10,000 Arlington, MA, US Charitable 2020
Household Goods Inc $15,000 Acton, MA, US Charitable 2020
Harvard Varisity Club $20,000 Boston, MA, US Charitable 2020
Amherst College $61,645 Amherst, MA, US Charitable 2018
Cchs Parents Association $5,000 Concord, MA, US Charitable 2018
Concord Middle School Parent-teacher Group's Aaa Fund $5,000 Concord, MA, US Charitable 2018
Concord Museum $62,500 Concord, MA, US Charitable 2018
Harvard University $225,000 Cambridge, MA, US Charitable 2018
Cchs Parents Association $2,050 Concord, MA, US Charitable 2017
Concord Middle School Parent-teacher Group's Aaa Fund $2,050 Concord, MA, US Charitable 2017
Amherst College $250,000 Amherst, MA, US Charitable 2017
Concord Free Public Library $250,000 Concord, MA, US Charitable 2017
The Umbrella Community Arts Center $100,000 Concord, MA, US Charitable 2016
Concord Museum $100,000 Concord, MA, US Charitable 2016

Foundations Similar to The Diomedes Foundation

Discover 5 foundations with comparable assets ($2,830,853-$2,838,944), similar grant patterns, and geographic focus in MA that may also align with your organization's funding needs and grant seeking strategy.

Foundation Name Total Assets Typical Grant Size Service Area Similarity Match

EIN: 04-3340178 | 311 grants awarded
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(≈ Similar)
$5,000
median grant
Needham, MA
Same state
100%
Excellent match

EIN: 04-2121312 | 118 grants awarded
$2,838,377
(≈ Similar)
$12,000
median grant
Lenox, MA
Same state
100%
Excellent match

EIN: 74-6521599 | 179 grants awarded
$2,837,704
(≈ Similar)
$5,000
median grant
Boston, MA
Same state
100%
Excellent match

EIN: 87-6910148 | 33 grants awarded
$2,832,738
(≈ Similar)
$10,000
median grant
Gloucester, MA
Same state
100%
Excellent match

EIN: 13-4092729 | 59 grants awarded
$2,830,853
(≈ Similar)
$10,000
median grant
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Same state
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Contact Information

Official contact details for The Diomedes Foundation as registered with the IRS. These details are essential for grant applications, correspondence, and due diligence processes.

EIN 46-1451480
Website N/A
Address 33 BRADFORD STREET Concord, MA 01742-2986

Key People (3)

Board members, trustees, and key staff who oversee The Diomedes Foundation's grant making decisions and strategic direction. Understanding leadership composition can provide insights into foundation priorities and potential networking opportunities.

Trustee John W Boynton Iv
Trustee Johanna N Boynton
Trustee James E Gowen Ii

Forms 990-PF

IRS Form 990-PF filings provide comprehensive financial information, grant details, and operational data. These documents are essential resources for understanding foundation capacity, giving patterns, and strategic priorities.

Form 990-PF Research Tips
  • Review Part XV for detailed grant recipient information and funding purposes
  • Check Part I for total assets, annual giving amounts, and payout requirements
  • Examine Part VIII for key personnel compensation and board structure
  • Look for trends across multiple years to understand giving patterns

About This Foundation Profile

This comprehensive foundation profile for The Diomedes Foundation is powered by Grant Bay's advanced foundation research platform. Our system analyzes IRS Form 990-PF filings, grant histories, and philanthropic patterns to provide nonprofit organizations with actionable intelligence for grant seeking success.

Data Sources & Accuracy

All information is derived from official IRS filings and public records. Grant Bay processes thousands of Form 990-PF documents to extract grant details, financial data, and organizational information. Data accuracy depends on foundation reporting quality and IRS filing completeness.

Research Applications

Use this profile for prospect research, grant strategy development, application preparation, and relationship building. Combine this data with additional research on foundation priorities, application processes, and board member backgrounds for comprehensive grant seeking strategies.

Data Currency: Last updated February 2026 based on IRS Form 990-PF filings. Foundation information reflects most recent available tax year data.