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Rockpile Museum Association

  • Gillette, WY
  • Tax-exempt since Jan. 1996
  • EIN: 83-0314119

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 / Museum, Museum Activities (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$191k (2023)

Expenses
$57.8k (2023)

Total Assets
$1.15M (2023)

Total Liabilities
$0 (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
$190,557
Expenses
$57,808
Net Income
$132,749
Net Assets
$1,150,672
Notable Sources of Revenue Percent of Total Revenue
Contributions $103,785
54.5%
Program Services $22,720
11.9%
Investment Income $61,863
32.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $2,189
1.1%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,150,672
Total Liabilities $0
Net Assets $1,150,672
Compensation
Key Employees and Officers Compensation Related Other
Robert Driver (Treasurer) $0 $0 $0
Anne Larsen (Secretary) $0 $0 $0
Isaiah Marquiss (Vice Preside) $0 $0 $0
Rocky Marquiss (Director) $0 $0 $0
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Document Links

990
Filed on Sept. 5, 2025

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$51,536
Expenses
$53,883
Net Income
-$2,347
Net Assets
$1,017,923
Notable Sources of Revenue Percent of Total Revenue
Contributions $33,735
65.5%
Program Services $12,763
24.8%
Investment Income $115
0.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $4,923
9.6%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,017,923
Total Liabilities $0
Net Assets $1,017,923
Compensation
Key Employees and Officers Compensation Related Other
Tami Bishop (Director) $0 $0 $0
Robeert Driveer (Treasurer) $0 $0 $0
Lisa Marquiss (President) $0 $0 $0
Sandra Holyoak (Secretary) $0 $0 $0
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Document Links

990
Filed on Nov. 13, 2023

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$86,804
Expenses
$46,205
Net Income
$40,599
Net Assets
$1,052,508
Notable Sources of Revenue Percent of Total Revenue
Contributions $28,674
33.0%
Program Services $24,875
28.7%
Investment Income $30,174
34.8%
Bond Proceeds $3,026
3.5%
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $55
0.1%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,052,508
Total Liabilities $0
Net Assets $1,052,508
Compensation
Key Employees and Officers Compensation Related Other
Tami Bishop (Director) $0 $0 $0
Sherrie Lowell (Treasurer) $0 $0 $0
Lisa Marquiss (President) $0 $0 $0
Sandra Holyoak (Secretary) $0 $0 $0
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Document Links

990
Filed on Oct. 26, 2022

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$39,450
Expenses
$37,792
Net Income
$1,658
Net Assets
$1,011,909
Notable Sources of Revenue Percent of Total Revenue
Contributions $9,828
24.9%
Program Services $9,422
23.9%
Investment Income $25,715
65.2%
Bond Proceeds $2,007
5.1%
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$7,911
Net Inventory Sales $0
Other Revenue $389
1.0%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,011,909
Total Liabilities $0
Net Assets $1,011,909
Compensation
Key Employees and Officers Compensation Related Other
Gerald Morel (Director) $0 $0 $0
Sherrie Lowell (Treasurer) $0 $0 $0
Lisa Marquiss (President) $0 $0 $0
Sandra Holyoak (Secretary) $0 $0 $0
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Document Links

990
Filed on Aug. 11, 2021

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$72,935
Expenses
$25,408
Net Income
$47,527
Net Assets
$934,571
Notable Sources of Revenue Percent of Total Revenue
Contributions $51,195
70.2%
Program Services $0
Investment Income $24,729
33.9%
Bond Proceeds $250
0.3%
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$3,239
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 $934,571
Total Liabilities $0
Net Assets $934,571
Compensation
Key Employees and Officers Compensation Related Other
Gerald Morel (Director) $0 $0 $0
Lisa Marquiss (President) $0 $0 $0
Sandra Holyoak (Secretary) $0 $0 $0
Sherrie Lowell (Treasurer) $0 $0 $0
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Document Links

990
Filed on July 29, 2020

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$40,337
Expenses
$8,618
Net Income
$31,719
Net Assets
$887,336
Notable Sources of Revenue Percent of Total Revenue
Contributions $8,960
22.2%
Program Services $0
Investment Income $27,732
68.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $6,322
15.7%
Sales of Assets -$2,677
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 $887,336
Total Liabilities $0
Net Assets $887,336
Compensation
Key Employees and Officers Compensation Related Other
Gerald Morel (Director) $0 $0 $0
Lisa Marquiss (President) $0 $0 $0
Sandra Holyoak (Secretary) $0 $0 $0
Sherrie Lowell (Treasurer) $0 $0 $0
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Document Links

990
Filed on March 11, 2019

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$157,870
Expenses
$26,976
Net Income
$130,894
Net Assets
$855,617
Notable Sources of Revenue Percent of Total Revenue
Contributions $22,670
14.4%
Program Services $111,671
70.7%
Investment Income $20,550
13.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$72
Net Inventory Sales $0
Other Revenue $3,051
1.9%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $855,617
Total Liabilities $0
Net Assets $855,617
Compensation
Key Employees and Officers Compensation Related Other
Tommy Butler (Chairman) $0 $0 $0
Denise Tugman (Vice Chair) $0 $0 $0
Sandra Holyoak (Secretary) $0 $0 $0
Sherrie Lowell (Treasurer) $0 $0 $0
Diane Hackett (Director) $0 $0 $0
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Document Links

990
Filed on May 2, 2018

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$16,672
Expenses
$6,910
Net Income
$9,762
Net Assets
$724,723
Notable Sources of Revenue Percent of Total Revenue
Contributions $2,500
15.0%
Program Services $5,965
35.8%
Investment Income $9,830
59.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$3,411
Net Inventory Sales $0
Other Revenue $1,788
10.7%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $724,723
Total Liabilities $0
Net Assets $724,723
Compensation
Key Employees and Officers Compensation Related Other
Tommy Butler (Chairman) $0 $0 $0
Denise Tugman (Vice Chair) $0 $0 $0
Sandra Holyoak (Secretary) $0 $0 $0
Sherrie Lowell (Treasurer) $0 $0 $0
Diane Hackett (Director) $0 $0 $0
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Document Links

990
Filed on April 27, 2017

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$44,683
Expenses
$19,020
Net Income
$25,663
Net Assets
$714,961
Notable Sources of Revenue Percent of Total Revenue
Contributions $44,683
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 $714,961
Total Liabilities $0
Net Assets $714,961
Compensation
Key Employees and Officers Compensation Related Other
Tom Butler (Chairman) $0 $0 $0
Myrna Sharp (Vice Chair) $0 $0 $0
Diane Hackett (Secretary) $0 $0 $0
Sherry Lowell (Treasurer) $0 $0 $0
Jimmy Anderson (Director) $0 $0 $0
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Document Links

990
Filed on May 9, 2016

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$177,796
Expenses
$4,246
Net Income
$173,550
Net Assets
$347,597
Notable Sources of Revenue Percent of Total Revenue
Contributions $147,438
82.9%
Program Services $4,453
2.5%
Investment Income $25,905
14.6%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $347,597
Total Liabilities $0
Net Assets $347,597
Compensation
Key Employees and Officers Compensation Other
Tom Butler (Chairman) $0 $0
Myrna Sharp (Vice Chair) $0 $0
Diane Hackett (Secretary) $0 $0
Sherry Lowell (Treasurer) $0 $0
Jimmy Anderson (Director) $0 $0
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Document Links

990-EZ
Filed on May 5, 2015

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$7,078
Expenses
$2,909
Net Income
$4,169
Net Assets
$174,047
Notable Sources of Revenue Percent of Total Revenue
Contributions $6,956
98.3%
Program Services $0
Investment Income $122
1.7%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $174,047
Total Liabilities $0
Net Assets $174,047

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$10,815
Expenses
$3,993
Net Income
$6,822
Net Assets
$163,878
Notable Sources of Revenue Percent of Total Revenue
Contributions $10,611
98.1%
Program Services $0
Investment Income $204
1.9%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $163,878
Total Liabilities $0
Net Assets $163,878

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$9,251
Expenses
$3,511
Net Income
$5,740
Net Assets
$163,045
Notable Sources of Revenue Percent of Total Revenue
Contributions $8,901
96.2%
Program Services $0
Investment Income $350
3.8%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $163,045
Total Liabilities $0
Net Assets $163,045

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

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

990-EZ

Short form tax return for a nonprofit’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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