National Museum Of Mathematics
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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 $27M (2024)
Expenses $9.81M (2024)
Total Assets $55.8M (2024)
Total Liabilities $4.3M (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 June
2024
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$27,013,034
Expenses
$9,811,847
Net Income
$17,201,187
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $17,954,492 |
66.5%
|
| Program Services | $2,138,846 |
7.9%
|
| Investment Income | $1,178,957 |
4.4%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $52,650 |
0.2%
|
| Net Fundraising | -$76,342 | |
| Sales of Assets | $5,560,504 |
20.6%
|
| Net Inventory Sales | $172,775 |
0.6%
|
| Other Revenue | $31,152 |
0.1%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $855,829 |
8.7%
|
| Professional Fundraising Fees | $60,519 |
0.6%
|
| Other Salaries and Wages | $2,636,551 |
26.9%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $55,783,461 | |
| Total Liabilities | $4,297,570 |
Compensation
| Key Employees and Officers | Compensation | Related | Other |
|---|---|---|---|
| Cindy Lawrence (Executive Director) | $352,151 | $0 | $47,962 |
| Timothy Nissen (Associate Director) | $202,647 | $0 | $33,743 |
| Stephen Uzzo (Cto) | $186,588 | $0 | $34,986 |
Document Links
990
Filed on May 15, 2025Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2023
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$7,869,251
Expenses
$9,533,535
Net Income
-$1,664,284
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $4,633,583 |
58.9%
|
| Program Services | $2,143,954 |
27.2%
|
| Investment Income | $543,660 |
6.9%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $49,050 |
0.6%
|
| Net Fundraising | -$84,665 | |
| Sales of Assets | $381,248 |
4.8%
|
| Net Inventory Sales | $188,837 |
2.4%
|
| Other Revenue | $13,584 |
0.2%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $1,008,744 |
10.6%
|
| Professional Fundraising Fees | $144,050 |
1.5%
|
| Other Salaries and Wages | $2,258,451 |
23.7%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $38,585,225 | |
| Total Liabilities | $2,103,008 |
Compensation
| Key Employees and Officers | Compensation | Related | Other |
|---|---|---|---|
| Cindy Lawrence (Executive Director) | $341,649 | $0 | $44,403 |
| Timothy Nissen (Associate Director) | $201,317 | $0 | $27,965 |
| Yia Hang (Coo) | $181,640 | $0 | $16,591 |
Document Links
990
Filed on May 14, 2024Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2022
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$6,224,027
Expenses
$7,708,376
Net Income
-$1,484,349
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $3,553,425 |
57.1%
|
| Program Services | $1,272,908 |
20.5%
|
| Investment Income | $428,860 |
6.9%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $41,150 |
0.7%
|
| Net Fundraising | $0 | |
| Sales of Assets | $785,846 |
12.6%
|
| Net Inventory Sales | $126,176 |
2.0%
|
| Other Revenue | $15,662 |
0.3%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $685,028 |
8.9%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $1,868,863 |
24.2%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $36,788,428 | |
| Total Liabilities | $633,344 |
Other
Reported conflict of interest transactions
Compensation
| Key Employees and Officers | Compensation | Related | Other |
|---|---|---|---|
| Cindy Lawrence (Executive Director) | $313,433 | $0 | $24,327 |
| Timothy Nissen (Associate Director) | $199,000 | $0 | $15,942 |
| Paul Seo (Chief Of Instruction) | $150,000 | $0 | $10,896 |
Document Links
990
Filed on May 8, 2023Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2021
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$9,885,068
Expenses
$6,931,462
Net Income
$2,953,606
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $8,322,014 |
84.2%
|
| Program Services | $393,059 |
4.0%
|
| Investment Income | $447,177 |
4.5%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $8,000 |
0.1%
|
| Net Fundraising | $0 | |
| Sales of Assets | $689,809 |
7.0%
|
| Net Inventory Sales | $19,708 |
0.2%
|
| Other Revenue | $5,301 |
0.1%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $526,267 |
7.6%
|
| Professional Fundraising Fees | $175,500 |
2.5%
|
| Other Salaries and Wages | $1,776,336 |
25.6%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $42,218,242 | |
| Total Liabilities | $730,531 |
Other
Reported conflict of interest transactions
Compensation
| Key Employees and Officers | Compensation | Related | Other |
|---|---|---|---|
| Cindy Lawrence (Executive Director) | $301,378 | $0 | $22,031 |
| Timothy Nissen (Associate Director) | $193,000 | $0 | $14,113 |
| Paul Seo (Chief Of Instruction) | $150,000 | $0 | $10,477 |
Document Links
990
Filed on May 6, 2022Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2020
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$7,954,857
Expenses
$7,422,400
Net Income
$532,457
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $4,738,723 |
59.6%
|
| Program Services | $1,937,090 |
24.4%
|
| Investment Income | $542,389 |
6.8%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $57,095 |
0.7%
|
| Net Fundraising | $0 | |
| Sales of Assets | $506,080 |
6.4%
|
| Net Inventory Sales | $165,565 |
2.1%
|
| Other Revenue | $7,915 |
0.1%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $680,937 |
9.2%
|
| Professional Fundraising Fees | $214,200 |
2.9%
|
| Other Salaries and Wages | $1,585,999 |
21.4%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $35,006,682 | |
| Total Liabilities | $1,306,930 |
Compensation
| Key Employees and Officers | Compensation | Related | Other |
|---|---|---|---|
| Cindy Lawrence (Executive Director) | $273,450 | $0 | $11,594 |
| Timothy Nissen (Associate Director) | $185,607 | $0 | $2,521 |
| Manjul Bhargava (Trustee / Visiting Professor) | $149,850 | $0 | $0 |
Document Links
990
Filed on May 10, 2021Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2019
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$10,351,966
Expenses
$7,682,335
Net Income
$2,669,631
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $7,044,763 |
68.1%
|
| Program Services | $2,718,822 |
26.3%
|
| Investment Income | $389,525 |
3.8%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $35,755 |
0.3%
|
| Net Fundraising | -$129,758 | |
| Sales of Assets | $35,975 |
0.3%
|
| Net Inventory Sales | $241,781 |
2.3%
|
| Other Revenue | $15,103 |
0.1%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $700,808 |
9.1%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $1,869,920 |
24.3%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $33,707,293 | |
| Total Liabilities | $1,448,423 |
Compensation
| Key Employees and Officers | Compensation | Related | Other |
|---|---|---|---|
| Cindy Lawrence (Executive Director) | $325,617 | $0 | $16,708 |
| Timothy Nissen (Associate Director) | $182,247 | $0 | $14,763 |
| Jonah Smith (Technology Manager) | $121,017 | $0 | $0 |
Document Links
990
Filed on July 15, 2020Primary tax return for a nonprofit’s activities, finances, and governance
990-T
For unrelated business income from activities not substantially related to the organization's tax-exempt purpose
Fiscal Year Ending June
2018
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$7,525,319
Expenses
$6,590,552
Net Income
$934,767
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $4,864,275 |
64.6%
|
| Program Services | $2,106,418 |
28.0%
|
| Investment Income | $275,576 |
3.7%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $130,605 |
1.7%
|
| Net Fundraising | -$125,423 | |
| Sales of Assets | $0 | |
| Net Inventory Sales | $243,357 |
3.2%
|
| Other Revenue | $30,511 |
0.4%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $415,100 |
6.3%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $1,704,342 |
25.9%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $29,567,733 | |
| Total Liabilities | $1,245,167 |
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
990-T
For unrelated business income from activities not substantially related to the organization's tax-exempt purpose
Fiscal Year Ending June
2017
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$6,075,419
Expenses
$6,364,317
Net Income
-$288,898
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $3,810,074 |
62.7%
|
| Program Services | $1,821,057 |
30.0%
|
| Investment Income | $179,356 |
3.0%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $43,776 |
0.7%
|
| Net Fundraising | -$139,181 | |
| Sales of Assets | $21,443 |
0.4%
|
| Net Inventory Sales | $233,805 |
3.8%
|
| Other Revenue | $105,089 |
1.7%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $206,000 |
3.2%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $1,818,509 |
28.6%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $27,923,186 | |
| Total Liabilities | $1,401,307 |
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2016
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$6,897,044
Expenses
$5,381,535
Net Income
$1,515,509
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $4,454,706 |
64.6%
|
| Program Services | $1,751,623 |
25.4%
|
| Investment Income | $19,735 |
0.3%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $60,428 |
0.9%
|
| Net Fundraising | -$132,306 | |
| Sales of Assets | $480,625 |
7.0%
|
| Net Inventory Sales | $218,520 |
3.2%
|
| Other Revenue | $43,713 |
0.6%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $200,000 |
3.7%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $1,328,352 |
24.7%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $27,153,116 | |
| Total Liabilities | $1,296,916 |
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2015
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$5,583,412
Expenses
$5,155,048
Net Income
$428,364
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $3,506,359 |
62.8%
|
| Program Services | $1,720,080 |
30.8%
|
| Investment Income | $11,746 |
0.2%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $94,415 |
1.7%
|
| Net Fundraising | -$160,938 | |
| Sales of Assets | $174,889 |
3.1%
|
| Net Inventory Sales | $216,043 |
3.9%
|
| Other Revenue | $20,818 |
0.4%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $187,000 |
3.6%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $1,197,568 |
23.2%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $25,729,849 | |
| Total Liabilities | $1,392,299 |
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2014
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$6,105,908
Expenses
$5,059,700
Net Income
$1,046,208
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $4,139,790 |
67.8%
|
| Program Services | $1,678,640 |
27.5%
|
| Investment Income | $19,111 |
0.3%
|
| Bond Proceeds | $0 | |
| Royalties | $270 |
0.0%
|
| Rental Property Income | $50,517 |
0.8%
|
| Net Fundraising | -$148,915 | |
| Sales of Assets | $108,287 |
1.8%
|
| Net Inventory Sales | $254,258 |
4.2%
|
| Other Revenue | $3,950 |
0.1%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $107,917 |
2.1%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $1,075,032 |
21.2%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $25,547,294 | |
| Total Liabilities | $1,638,108 |
Compensation
| Key Employees and Officers | Compensation | Related | Other |
|---|---|---|---|
| Timothy Nissen (Chief Of Design) | $139,636 | $0 | $5,364 |
| Cindy Lawrence (Co Executive Director) | $102,500 | $0 | $0 |
| Glen Whitney (Pres./Treasurer/Co Exec.Director) | $0 | $0 | $0 |
Document Links
990
Filed on May 21, 2015Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2013
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$6,263,029
Expenses
$4,614,624
Net Income
$1,648,405
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $4,455,906 |
71.1%
|
| Program Services | $1,490,297 |
23.8%
|
| Investment Income | $40,386 |
0.6%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $0 | |
| Net Fundraising | $12,836 |
0.2%
|
| Sales of Assets | -$21,823 | |
| Net Inventory Sales | $266,441 |
4.3%
|
| Other Revenue | $18,986 |
0.3%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $100,000 |
2.2%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $841,161 |
18.2%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $25,070,413 | |
| Total Liabilities | $2,684,694 |
Document Links
990
Filed on June 30, 2014Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2012
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$8,790,648
Expenses
$2,371,269
Net Income
$6,419,379
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $8,654,056 |
98.4%
|
| Program Services | $153,163 |
1.7%
|
| Investment Income | $49,776 |
0.6%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $0 | |
| Net Fundraising | -$72,955 | |
| Sales of Assets | -$3,549 | |
| Net Inventory Sales | $10,157 |
0.1%
|
| Other Revenue | $0 |
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $100,000 |
4.2%
|
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $652,906 |
27.5%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $23,069,719 | |
| Total Liabilities | $2,333,193 |
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
2011
Extracted Financial Data
Extracted Financial Data from Form 990
Revenue
$12,570,992
Expenses
$1,407,869
Net Income
$11,163,123
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions | $12,395,518 |
98.6%
|
| Program Services | $122,304 |
1.0%
|
| Investment Income | $24,950 |
0.2%
|
| Bond Proceeds | $0 | |
| Royalties | $0 | |
| Rental Property Income | $0 | |
| Net Fundraising | $0 | |
| Sales of Assets | $0 | |
| Net Inventory Sales | $23,654 |
0.2%
|
| Other Revenue | $4,566 |
0.0%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Executive Compensation | $0 | |
| Professional Fundraising Fees | $0 | |
| Other Salaries and Wages | $458,023 |
32.5%
|
| Assets/Debt | ||
|---|---|---|
| Total Assets | $14,681,287 | |
| Total Liabilities | $359,209 |
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
Fiscal Year Ending June
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
Primary tax return for a nonprofit’s activities, finances, and governance
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