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Elk Rock Garden Foundation

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: Environmental Quality, Protection and Beautification / Botanical Gardens, Arboreta and Botanical Organizations (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$4.29M (2023)

Expenses
$109k (2023)

Total Assets
$5.43M (2023)

Total Liabilities
$1.2M (2023)

Source: Form 990 tax filings from 2011 to 2023

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.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$4,287,319
Expenses
$109,331
Net Income
$4,177,988
Net Assets
$4,233,746
Notable Sources of Revenue Percent of Total Revenue
Contributions $4,287,125
100.0%
Program Services $0
Investment Income $194
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $25,937
23.7%
Assets/Debt
Total Assets $5,433,746
Total Liabilities $1,200,000
Net Assets $4,233,746
Compensation
Key Employees and Officers Compensation Related Other
Rachel Milton (Member) $21,365 $0 $21,365
Thomas Truszkowski (Secretary) $0 $0 $0
Nancy Truszkowski (Treasurer) $0 $0 $0
Peter Platt (President) $0 $0 $0
Stephanie Brown (Member) $0 $0 $0
Art Graves (Member) $0 $0 $0
Josh Hinerfeld (Member) $0 $0 $0
Josephine Lowe (Member) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$39,842
Expenses
$25,108
Net Income
$14,734
Net Assets
$55,758
Notable Sources of Revenue Percent of Total Revenue
Contributions $39,842
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $55,758
Total Liabilities $0
Net Assets $55,758
Compensation
Key Employees and Officers Compensation Other
Anita Barbey (Board Member) $0 $0
Arthur Graves (Board Member) $0 $0
Jane Hergenhan (Secretary) $0 $0
Thomas Truszkowski (President & Treasurer) $0 $0

Document Links

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$69,782
Expenses
$42,992
Net Income
$26,790
Net Assets
$41,024
Notable Sources of Revenue Percent of Total Revenue
Contributions $69,782
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $41,024
Total Liabilities $0
Net Assets $41,024
Compensation
Key Employees and Officers Compensation Other
Anita Barbey (Board Member) $0 $0
Arthur Graves (Board Member) $0 $0
Jane Hergenhan (Secretary) $0 $0
Thomas Truszkowski (President & Treasurer) $0 $0

Document Links

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$32,577
Expenses
$45,061
Net Income
-$12,484
Net Assets
$14,234
Notable Sources of Revenue Percent of Total Revenue
Contributions $32,577
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $14,234
Total Liabilities $0
Net Assets $14,234
Compensation
Key Employees and Officers Compensation Other
Anita Barbey (Board Member) $0 $0
Arthur Graves (Board Member) $0 $0
Jane Hergenhan (Secretary) $0 $0
Thomas Truszkowski (President & Treasurer) $0 $0

Document Links

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$95,509
Expenses
$94,015
Net Income
$1,494
Net Assets
$26,718
Notable Sources of Revenue Percent of Total Revenue
Contributions $95,509
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $26,718
Total Liabilities $0
Net Assets $26,718
Compensation
Key Employees and Officers Compensation Other
Anita Barbey (Board Member) $0 $0
Authur Graves (Board Member) $0 $0
Jane Hergenhan (Secretary) $0 $0
Thomas Truszkowski (President & Treasurer) $0 $0

Document Links

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$39,001
Expenses
$49,930
Net Income
-$10,929
Net Assets
$25,224
Notable Sources of Revenue Percent of Total Revenue
Contributions $39,001
100%
Program Services $0
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $25,224
Total Liabilities $0
Net Assets $25,224
Compensation
Key Employees and Officers Compensation Related Other
Arthur Graves (Member) $0 $0 $0
Anita Barbery (Member) $0 $0 $0
Tom Truszkowski (President & Treasurer) $0 $0 $0
Jane Hergenhan (Secretary) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$24,504
Expenses
$48,171
Net Income
-$23,667
Net Assets
$36,153
Notable Sources of Revenue Percent of Total Revenue
Contributions $24,490
99.9%
Program Services $0
Investment Income $14
0.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $36,153
Total Liabilities $0
Net Assets $36,153
Compensation
Key Employees and Officers Compensation Related Other
Arthur Graves (Member) $0 $0 $0
Jane Hergenhan (Member) $0 $0 $0
Anita Barbery (Member) $0 $0 $0
Michael Dotten (Member) $0 $0 $0
David Platt (Member) $0 $0 $0
Rachel Holbrook (Member) $0 $0 $0
Michael Hanley (Member) $0 $0 $0
Sara Mauritz (President) $0 $0 $0
Tom Truszkowski (Treasurer) $0 $0 $0
Jill Mcdonald (Secretary) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$27,500
Expenses
$28,976
Net Income
-$1,476
Net Assets
$59,820
Notable Sources of Revenue Percent of Total Revenue
Contributions $27,453
99.8%
Program Services $0
Investment Income $47
0.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $59,820
Total Liabilities $0
Net Assets $59,820
Compensation
Key Employees and Officers Compensation Related Other
Arthur Graves (Member) $0 $0 $0
Jane Hergenhan (Member) $0 $0 $0
Anita Barbery (Member) $0 $0 $0
Michael Dotten (Member) $0 $0 $0
David Platt (Member) $0 $0 $0
Rachel Holbrook (M Ember) $0 $0 $0
Michael Hanley (Member) $0 $0 $0
Sara Mauritz (President) $0 $0 $0
Tom Truszkowski (Treasurer) $0 $0 $0
J Ill Mcdonald (Secretary) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$45,210
Expenses
$49,202
Net Income
-$3,992
Net Assets
$61,296
Notable Sources of Revenue Percent of Total Revenue
Contributions $45,149
99.9%
Program Services $0
Investment Income $61
0.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $61,296
Total Liabilities $0
Net Assets $61,296
Compensation
Key Employees and Officers Compensation Related Other
Arthur Graves (Member) $0 $0 $0
Jane Hergenhan (Member) $0 $0 $0
Virginia Israelit (Member) $0 $0 $0
Jill Mcdonald (Member) $0 $0 $0
Barbara Wagner (Member) $0 $0 $0
Tom Truszkowski (Member) $0 $0 $0
David Platt (Member) $0 $0 $0
Rachel Holbrook (Member) $0 $0 $0
Sara Mauritz (President) $0 $0 $0
Donna Kinsel (Treasurer) $0 $0 $0
Susan Bates (Secretary) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$37,557
Expenses
$47,567
Net Income
-$10,010
Net Assets
$65,288
Notable Sources of Revenue Percent of Total Revenue
Contributions $37,478
99.8%
Program Services $0
Investment Income $79
0.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $65,288
Total Liabilities $0
Net Assets $65,288
Compensation
Key Employees and Officers Compensation Related Other
Arthur Graves (Member) $0 $0 $0
Jane Hergenhan (Member) $0 $0 $0
Virginia Israelit (Member) $0 $0 $0
Jill Mcdonald (Member) $0 $0 $0
Barbara Wagner (Member) $0 $0 $0
Tom Truszkowski (Member) $0 $0 $0
David Platt (Member) $0 $0 $0
Rachel Holbrook (Member) $0 $0 $0
Sara Mauritz (President) $0 $0 $0
Donna Kinsel (Treasurer) $0 $0 $0
Susan Bates (Secretary) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$50,801
Expenses
$35,980
Net Income
$14,821
Net Assets
$75,298
Notable Sources of Revenue Percent of Total Revenue
Contributions $50,609
99.6%
Program Services $0
Investment Income $78
0.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $114
0.2%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $75,298
Total Liabilities $0
Net Assets $75,298
Compensation
Key Employees and Officers Compensation Related Other
Arthur Graves (Member) $0 $0 $0
Jane Hergenhan (Member) $0 $0 $0
Virginia Israelit (Member) $0 $0 $0
Jill Mcdonald (Member) $0 $0 $0
Barbara Wagner (Member) $0 $0 $0
Tom Truszkowski (Member) $0 $0 $0
David Platt (Member) $0 $0 $0
Mary Dick (Member) $0 $0 $0
Carol Ward (Member) $0 $0 $0
Rachel Holbrook (Member) $0 $0 $0
Neysa Ellgren (Member) $0 $0 $0
Sara Mauritz (President) $0 $0 $0
Donna Kinsel (Treasurer) $0 $0 $0
Susan Bates (Secretary) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$24,091
Expenses
$15,266
Net Income
$8,825
Net Assets
$60,477
Notable Sources of Revenue Percent of Total Revenue
Contributions $23,975
99.5%
Program Services $0
Investment Income $116
0.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $60,477
Total Liabilities $0
Net Assets $60,477

Document Links

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$22,542
Expenses
$36,627
Net Income
-$14,085
Net Assets
$51,652
Notable Sources of Revenue Percent of Total Revenue
Contributions $22,345
99.1%
Program Services $0
Investment Income $197
0.9%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $76,872
Total Liabilities $25,220
Net Assets $51,652

Document Links

Fiscal Year Ending Dec.
2010

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

Fiscal Year Ending Dec.
2009

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

Fiscal Year Ending Dec.
2008

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

Fiscal Year Ending Dec.
2006

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

Fiscal Year Ending Dec.
2005

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

Fiscal Year Ending Dec.
2004

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

Fiscal Year Ending Dec.
2003

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

Fiscal Year Ending Dec.
2002

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

Fiscal Year Ending Dec.
2001

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

About 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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