Skip to content
ProPublica Donate
ProPublica Donate

Glenstone 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: Arts, Culture and Humanities / Visual Arts Organizations (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$267M (2023)

Expenses
$52M (2023)

Total Assets
$2.91B (2023)

Total Liabilities
$171M (2023)

Years with missing data
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-PF
Revenue
$266,804,717
Expenses
$51,950,857
Net Income
$214,853,860
Net Assets
$2,742,955,489
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $41,502,862
15.6%
Interest Revenue $1,064,283
0.4%
Dividends $8,125,835
3.0%
Sales of Assets $183,140,389
68.6%
Other Income $33,076,243
12.4%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $39,149,529
75.4%
Compensation of Officers* $456,239
0.9%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,913,564,506
Total Liabilities $170,609,017
Net Assets $2,742,955,489
Compensation
Key Employees and Officers Compensation Other
Anthony Cerveny (Chief Operating Officer) $302,545 $18,285
Valentina Nahon (Snr Director Publi) $160,822 $7,408
Martin Lotz (Director Of Faciliti) $160,315 $10,705
Paul Tukey (Director Environme) $159,731 $17,620
Steve O'banion (Director Of Conserva) $144,390 $19,034
Alicia Davis (Director Of Hr) $141,547 $17,541
Heather F Nolan (Director Of Finance Retired) $81,386 $3,556
Noordin Moloo (Director Of Finance) $72,308 $6,592
Mitchell P Rales (Chairman/Director) $0 $0
Emily W Rales (President) $0 $0
C Scott Brannan (Vice Pres./Treasurer/Director) $0 $0
Rachel L S Plumley (Secretary/Director) $0 $0

Document Links

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$132,610,613
Expenses
$44,935,436
Net Income
$87,675,177
Net Assets
$2,577,746,647
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $66,230,563
49.9%
Interest Revenue $668,396
0.5%
Dividends $7,980,433
6.0%
Sales of Assets $58,020,176
43.8%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $34,613,096
77.0%
Compensation of Officers* $434,267
1.0%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,794,166,064
Total Liabilities $216,419,417
Net Assets $2,577,746,647
Compensation
Key Employees and Officers Compensation Other
Anthony Cerveny (Chief Operating Officer) $289,772 $18,085
Valentina Nahon (Snr Director Publi) $192,481 $8,671
Martin Lotz (Director Of Faciliti) $153,882 $20,680
Paul Tukey (Director Environme) $152,387 $16,937
Stockton Toler (Director Of Visitor) $152,365 $11,222
Heather F Nolan (Director Of Finance) $143,501 $6,677
Alicia Davis (Director Of Hr) $134,547 $14,513
Mitchell P Rales (Chairman/Director) $0 $0
Emily W Rales (President) $0 $0
C Scott Brannan (Vice Pres./Treasurer/Director) $0 $0
Rachel L S Plumley (Secretary/Director) $0 $0

Document Links

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$1,895,507,815
Expenses
$43,236,693
Net Income
$1,852,271,122
Net Assets
$2,552,109,185
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,887,406,255
99.6%
Interest Revenue $313,863
0.0%
Dividends $3,826,175
0.2%
Sales of Assets $3,992,407
0.2%
Other Income $30,000
0.0%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $33,031,468
76.4%
Compensation of Officers* $409,469
0.9%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,772,440,122
Total Liabilities $220,330,937
Net Assets $2,552,109,185
Compensation
Key Employees and Officers Compensation Other
Anthony Cerveny (Chief Operating Officer) $272,291 $17,341
Alicia Davis (Director Of Hr) $153,985 $15,455
Martin Lotz (Director Of Faciliti) $150,160 $20,297
Paul Tukey (Chief Sustainability) $148,865 $16,621
Stockton Toler (Director Of Visitor) $146,158 $12,204
Valentina Nahon (Snr Director Publi) $143,131 $6,687
Heather F Nolan (Director Of Finance) $137,178 $6,106
Mitchell P Rales (Chairman/Director) $0 $0
Emily W Rales (President) $0 $0
C Scott Brannan (Vice Pres./Treasurer/Director) $0 $0
Rachel L S Plumley (Secretary/Director) $0 $0

Document Links

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$596,667,510
Expenses
$45,366,231
Net Income
$551,301,279
Net Assets
$2,206,404,996
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $285,918,149
47.9%
Interest Revenue $735,417
0.1%
Dividends $531,250
0.1%
Sales of Assets $309,558,276
51.9%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $35,146,923
77.5%
Compensation of Officers* $754,171
1.7%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $2,347,640,541
Total Liabilities $141,235,545
Net Assets $2,206,404,996
Compensation
Key Employees and Officers Compensation Other
Laura Linton (Chief Administrative Officer) $261,947 $14,757
Anthony Cerveny (Chief Operating Officer) $261,613 $16,233
Martin Lotz (Dir Of Facilities) $204,373 $19,307
Paul Tukey (Chief Sustain Off) $152,004 $14,992
Stockton Toler (Dir Visitor Exper) $144,578 $11,140
Maria Mizes Hickey (Dir Registration) $132,141 $9,806
Stephen Carrick (Dir Eng & Maint) $126,953 $16,182
Mary Beth Tsikalas (Director Of Finance & Hr) $116,406 $5,294
Heather F Nolan (Director Of Finance) $114,205 $4,611
Mitchell P Rales (Chairman/Director) $0 $0
Emily W Rales (President) $0 $0
C Scott Brannan (Vice Pres./Treasurer/Director) $0 $0
Rachel L S Plumley (Secretary/Director) $0 $0

Document Links

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$370,037,724
Expenses
$36,359,265
Net Income
$333,678,459
Net Assets
$1,935,317,427
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $181,663,157
49.1%
Interest Revenue $2,353
0.0%
Dividends $17,500
0.0%
Sales of Assets $187,856,034
50.8%
Other Income $15,000
0.0%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $26,211,769
72.1%
Compensation of Officers* $642,143
1.8%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $1,935,323,274
Total Liabilities $5,847
Net Assets $1,935,317,427
Compensation
Key Employees and Officers Compensation Other
Anthony Cerveny (Chief Operating Officer) $242,664 $14,534
Laura Linton (Chief Administrative Officer) $229,654 $13,820
Mary Beth Tsikalas (Director Of Finance & Hr) $169,825 $8,341
Maria Mizes Hickey (Dir Registration) $150,133 $11,224
Martin Lotz (Dir Of Facilities) $136,708 $15,940
Paul Tukey (Chief Sustain Off) $134,569 $16,442
Stockton Toler (Dir Visitor Exper) $130,320 $11,939
Stephen Carrick (Dir Eng & Maint) $112,109 $15,043
Mitchell P Rales (Chairman/Director) $0 $0
Emily W Rales (President) $0 $0
Rachel L S Plumley (Secretary/Director) $0 $0
C Scott Brannan (Vice Pres./Treasurer/Director) $0 $0

Document Links

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$248,309,673
Expenses
$27,219,502
Net Income
$221,090,171
Net Assets
$1,778,172,116
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $119,755,142
48.2%
Interest Revenue $334
0.0%
Dividends $0
Sales of Assets $128,629,391
51.8%
Other Income $1,230
0.0%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $19,186,597
70.5%
Compensation of Officers* $708,751
2.6%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $1,802,445,216
Total Liabilities $24,273,100
Net Assets $1,778,172,116
Compensation
Key Employees and Officers Compensation Other
Anthony Cerveny (Chief Operating Officer) $256,615 $13,794
Laura Linton (Chief Administrative Officer) $242,248 $12,210
Mary Beth Tsikalas (Director Of Finance & Hr) $209,888 $8,968
Paul Tukey (Chief Sustain. Off) $201,465 $18,185
Eric Love (Landscape Supt.) $157,970 $10,187
Martin Lotz (Dir Of Facilities) $154,868 $15,959
Stockton Toler (Dir Visitor Exper.) $146,504 $11,271
Maria Mizes Hickey (Dir Of Registration) $145,109 $11,375
Mitchell P Rales (Chairman/Director) $0 $0
Emily W Rales (President) $0 $0
Rachel L S Plumley (Secretary / Director) $0 $0
C Scott Brannan (Vice Pres./Treasurer/Director) $0 $0

Document Links

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$467,587,175
Expenses
$15,014,176
Net Income
$452,572,999
Net Assets
$1,675,674,945
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $229,773,500
49.1%
Interest Revenue $162
0.0%
Dividends $85,306,095
18.2%
Sales of Assets $152,434,705
32.6%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $14,550,240
96.9%
Compensation of Officers* $630,458
4.2%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $1,675,676,099
Total Liabilities $1,154
Net Assets $1,675,674,945
Compensation
Key Employees and Officers Compensation Other
Anthony Cerveny (Chief Operating Officer) $232,292 $13,820
Laura Linton (Chief Administrative Officer) $214,476 $12,553
Mary Beth Tsikalas (Director Of Finance & Hr) $183,690 $8,821
Joseph Bray (Cap Proj Sr Mgr) $158,863 $9,295
William Lehan (Chief Engineer) $141,228 $6,821
Martin Lotz (Dir Of Facilities) $140,664 $15,943
Paul Tukey (Chief Sustain. Off) $139,048 $17,489
Eric Love (Landscape Supt.) $134,651 $9,567
Mitchell P Rales (Chairman/Director) $0 $0
Emily W Rales (President) $0 $0
Rachel L S Plumley (Secretary / Director) $0 $0
C Scott Brannan (Vice Pres./Treasurer/Director) $0 $0
Michael G Ryan (Assistant Treasurer/Director) $0 $0
Joseph O Bunting Iii (Director) $0 $0
Teresa Lc Baldwin (Secretary) $0 $0

Document Links

Fiscal Year Ending Dec.
2016

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.
2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$510,714,990
Expenses
$11,612,324
Net Income
$499,102,666
Net Assets
$1,259,285,320
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $256,741,843
50.3%
Interest Revenue $493
0.0%
Dividends $400
0.0%
Sales of Assets $253,955,431
49.7%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $11,495,652
99.0%
Compensation of Officers* $547,169
4.7%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $1,259,460,127
Total Liabilities $174,807
Net Assets $1,259,285,320

Document Links

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$434,244,213
Expenses
$6,274,223
Net Income
$427,969,990
Net Assets
$1,013,886,192
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $218,596,001
50.3%
Interest Revenue $518
0.0%
Dividends $18
0.0%
Sales of Assets $215,609,476
49.7%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $6,274,223
100%
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 $1,029,025,722
Total Liabilities $15,139,530
Net Assets $1,013,886,192

Document Links

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$399,868,661
Expenses
$6,615,107
Net Income
$393,253,554
Net Assets
$801,452,653
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $149,307,322
37.3%
Interest Revenue $2,952
0.0%
Dividends $52,398,470
13.1%
Sales of Assets $198,159,917
49.6%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $6,615,107
100%
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 $849,902,315
Total Liabilities $48,449,662
Net Assets $801,452,653

Document Links

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$255,152,094
Expenses
$4,143,134
Net Income
$251,008,960
Net Assets
$629,894,848
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $154,006,463
60.4%
Interest Revenue $121
0.0%
Dividends $0
Sales of Assets $101,145,509
39.6%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $3,116,134
75.2%
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 $702,609,315
Total Liabilities $72,714,467
Net Assets $629,894,848

Document Links

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$233,180,526
Expenses
$3,856,361
Net Income
$229,324,165
Net Assets
$480,090,488
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $116,467,395
49.9%
Interest Revenue $110
0.0%
Dividends $0
Sales of Assets $116,712,918
50.1%
Other Income $100
0.0%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $2,760,361
71.6%
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 $584,144,497
Total Liabilities $104,054,009
Net Assets $480,090,488

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.
2007

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

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.

API

The data powering this website is available programmatically, via an API. Read the API documentation »