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Diomedes Foundation

  • Concord, MA
  • Tax-exempt since Feb. 2013
  • EIN: 46-1451480

Organization summary

Type of Nonprofit

Designated as a Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Category: Philanthropy, Voluntarism and Grantmaking Foundations / Private Grantmaking Foundations (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$328k (2024)

Expenses
$367k (2024)

Total Assets
$2.11M (2024)

Total Liabilities
$0 (2024)

Source: Form 990 tax filings from 2012 to 2024

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending Dec.
2024

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$327,702
Expenses
$366,569
Net Income
-$38,867
Net Assets
$2,105,097
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $76,510
23.3%
Sales of Assets $251,192
76.7%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $364,835
99.5%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,105,097
Total Liabilities $0
Net Assets $2,105,097
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on March 3, 2025

Primary tax return for a private foundation's activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2023

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$175,553
Expenses
$373,865
Net Income
-$198,312
Net Assets
$2,144,269
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $75,806
43.2%
Sales of Assets $99,747
56.8%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $371,535
99.4%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,144,269
Total Liabilities $0
Net Assets $2,144,269
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on March 13, 2024

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$71,727
Expenses
$333,862
Net Income
-$262,135
Net Assets
$2,342,202
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $238
0.3%
Dividends $58,335
81.3%
Sales of Assets $13,154
18.3%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $322,660
96.6%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,342,202
Total Liabilities $0
Net Assets $2,342,202
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on May 15, 2023

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$371,632
Expenses
$504,335
Net Income
-$132,703
Net Assets
$2,608,263
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $15
0.0%
Dividends $71,499
19.2%
Sales of Assets $300,118
80.8%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $498,375
98.8%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,608,263
Total Liabilities $0
Net Assets $2,608,263
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on May 27, 2022

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
-$125,750
Expenses
$235,449
Net Income
-$361,199
Net Assets
$2,740,965
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $25
Dividends $57,740
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $226,932
96.4%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,740,966
Total Liabilities $1
Net Assets $2,740,965
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on May 13, 2021

Primary tax return for a private foundation's activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$88,212
Expenses
$187,197
Net Income
-$98,985
Net Assets
$3,102,165
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $603
0.7%
Dividends $92,873
> 100%
Sales of Assets $0
Other Income $5,333
6.0%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $177,750
95.0%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $3,102,746
Total Liabilities $581
Net Assets $3,102,165
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on Nov. 16, 2020

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$99,297
Expenses
$367,760
Net Income
-$268,463
Net Assets
$3,201,150
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $636
0.6%
Dividends $85,397
86.0%
Sales of Assets $7,391
7.4%
Other Income $5,873
5.9%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $359,145
97.7%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $3,201,150
Total Liabilities $0
Net Assets $3,201,150
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on May 15, 2019

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$120,713
Expenses
$535,041
Net Income
-$414,328
Net Assets
$3,469,613
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $10,046
8.3%
Interest Revenue $176
0.1%
Dividends $88,602
73.4%
Sales of Assets $15,745
13.0%
Other Income $6,144
5.1%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $504,100
94.2%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $3,478,315
Total Liabilities $8,702
Net Assets $3,469,613
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on May 15, 2018

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
-$250,857
Expenses
$208,012
Net Income
-$458,869
Net Assets
$3,883,941
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $4,063
Interest Revenue $5,836
Dividends $78,398
Sales of Assets -$339,442
Other Income $288
Notable Expenses Percent of Total Expenses
Charitable Disbursements $200,000
96.1%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $3,887,807
Total Liabilities $3,866
Net Assets $3,883,941
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on May 12, 2017

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$110,033
Expenses
$310,864
Net Income
-$200,831
Net Assets
$4,346,686
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $27,360
24.9%
Interest Revenue $3,386
3.1%
Dividends $56,160
51.0%
Sales of Assets $23,127
21.0%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $303,413
97.6%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $4,346,686
Total Liabilities $0
Net Assets $4,346,686
Compensation
Key Employees and Officers Compensation Other
John W Boynton Iv (Trustee) $0 $0
Johanna N Boynton (Trustee) $0 $0
James E Gowen Ii (Trustee) $0 $0

Document Links

990-PF
Filed on Aug. 8, 2016

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$70,404
Expenses
$439,090
Net Income
-$368,686
Net Assets
$4,612,762
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $2,070
2.9%
Interest Revenue $31
0.0%
Dividends $76,528
> 100%
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $430,972
98.2%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $4,613,145
Total Liabilities $383
Net Assets $4,612,762

Document Links

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$468,892
Expenses
$1,528,828
Net Income
-$1,059,936
Net Assets
$4,885,246
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $19,562
4.2%
Interest Revenue $100
0.0%
Dividends $32,167
6.9%
Sales of Assets $417,063
88.9%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $1,515,154
99.1%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $4,885,246
Total Liabilities $0
Net Assets $4,885,246

Document Links

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$5,634,378
Expenses
$0
Net Income
$5,634,378
Net Assets
$5,634,378
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $5,634,375
100.0%
Interest Revenue $0
Dividends $3
0.0%
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $0
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $5,634,378
Total Liabilities $0
Net Assets $5,634,378

Document Links

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica. Bulk PDF downloads since 2017 are available from the IRS.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

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Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

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