Helminthological Society Of Washington

Bowie, MD
Tax-exempt since Oct. 1958
EIN: 52-6050334

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Type of Nonprofit

Designated as a 501(c)(3) 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: Medical Research / Specifically Named Diseases Research (H87Z) (NTEE)

Donations to this organization are tax deductible.

Revenue

$47.2k (2024)

Expenses

$36.8k (2024)

Total Assets

$458k (2024)

Total Liabilities

$0 (2024)

Source: Form 990 tax filings from 2011 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

Revenue

$47,203

Expenses

$36,789

Net Income

$10,414

Net Assets

$457,835

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$1,616	3.4%
Program Services	$30,612	64.9%
Investment Income	$11,856	25.1%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$457,835
Total Liabilities	$0
Net Assets	$457,835

Compensation

Key Employees and Officers	Compensation	Other
Kelly Weinersmith (President)	$0	$0
Sherman Hendrix (Immediate Past President)	$0	$0
Katrina Lohan (Vice President)	$0	$0
John M Hawdon (Treasurer)	$0	$0
Elise Mc Kean (Corresponding Secretary)	$0	$0
Anne Vardo Zalik (Recording Secretary)	$0	$0
Autumn Smith Herron (Editor In Chief)	$0	$0
Amy E Fowler (Executive Committee Member)	$0	$0
Kate Sheehan (Executive Committee Member)	$0	$0
Ashleigh Smythe (Executive Committee Member)	$0	$0
Michael R Zimmermann (Executive Committee Member)	$0	$0

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990-EZ

Filed on April 8, 2025

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

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Fiscal Year Ending Dec.
2023

Revenue

$42,491

Expenses

$30,493

Net Income

$11,998

Net Assets

$385,418

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$1,338	3.1%
Program Services	$28,633	67.4%
Investment Income	$9,091	21.4%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$385,418
Total Liabilities	$0
Net Assets	$385,418

Compensation

Key Employees and Officers	Compensation	Other
Kelly Weinersmith (President)	$0	$0
Michael Zimmermann (Vice President)	$0	$0
Ashleigh Smythe (Treasurer)	$0	$0
Katrina Lohan (Recording Secretary)	$0	$0
John M Hawdon (Corresponding Secret)	$0	$0
Autumn Smith Herron (Editor)	$0	$0
Ann Barse (Exec Committee Member)	$0	$0
James Bernot (Exec Committee Member)	$0	$0
Anna Phillips (Exec Committee Member)	$0	$0
Anne Vardo Zalik (Exec Committee Member)	$0	$0
Richard Clopton (Custod Of Back Issues)	$0	$0
Dennis Richardson (Archivist Librarian)	$0	$0

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990-EZ

Filed on March 20, 2024

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

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Fiscal Year Ending Dec.
2022

Revenue

$38,979

Expenses

$28,791

Net Income

$10,188

Net Assets

$369,308

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$3,473	8.9%
Program Services	$26,927	69.1%
Investment Income	$4,762	12.2%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$369,633
Total Liabilities	$325
Net Assets	$369,308

Compensation

Key Employees and Officers	Compensation	Other
Kelly Weinersmith (President)	$0	$0
Micheal Zimmerman (Vice President)	$0	$0
Ashleigh Smythe (Corresponding Secretary/Tr)	$0	$0
Katrina Lohan (Recording Secretary)	$0	$0
Autumn Smith Herron (Editor In Chief Of Compara)	$0	$0
John Hawdon (Immediate Past President)	$0	$0
Dennis Richardson (Archivist/Librarian)	$0	$0
Richard Clopton (Custodian Of Back Issues)	$0	$0
Ann Barse (Executive Committee Member)	$0	$0
James Bernot (Executive Committee Member)	$0	$0
Anna Phillips (Executive Committee Member)	$0	$0
Anne Vardo Zalik (Executive Committee Member)	$0	$0

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990-EZ

Filed on May 8, 2023

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

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Fiscal Year Ending Dec.
2021

Revenue

$45,358

Expenses

$22,341

Net Income

$23,017

Net Assets

$310,081

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$2,929	6.5%
Program Services	$31,364	69.1%
Investment Income	$7,196	15.9%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$310,213
Total Liabilities	$132
Net Assets	$310,081

Compensation

Key Employees and Officers	Compensation	Other
Kelly Weinersmith (President)	$0	$0
Micheal Zimmerman (Vice President)	$0	$0
Ashleigh B Smythe (Corresponding Secretary/Tr)	$0	$0
Katrina Lohan (Recording Secretary)	$0	$0
Autumn Smith Herron (Editor In Chief Of Compara)	$0	$0
Ann Barse (Executive Committee Member)	$0	$0
James Bernot (Executive Committee Member)	$0	$0
John M Hawdon (Immediate Past President)	$0	$0
Richard E Clopton (Custodian Of Back Issues)	$0	$0
Dennis J Richardson (Archivist/Librarian)	$0	$0
Anna J Phillips (Executive Committee Member)	$0	$0
Anne Vardo Zalik (Executive Committee Member)	$0	$0

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990-EZ

Filed on May 11, 2022

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

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Fiscal Year Ending Dec.
2020

Revenue

$40,179

Expenses

$10,460

Net Income

$29,719

Net Assets

$251,310

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$512	1.3%
Program Services	$32,844	81.7%
Investment Income	$2,681	6.7%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$104	0.3%

Assets/Debt
Total Assets	$251,320
Total Liabilities	$10
Net Assets	$251,310

Compensation

Key Employees and Officers	Compensation	Other
John M Hawdon (President)	$0	$0
Anne Vardo Zalik (Vice President)	$0	$0
Ashleigh B Smythe (Corresponding Secretary/Tr)	$0	$0
Anna J Phillips (Recording Secretary)	$0	$0
Autumn Smith Herron (Editor In Chief Of Compara)	$0	$0
Kelly Weinersmith (Executive Committee Member)	$0	$0
Damien O'halloran (Executive Committee Member)	$0	$0
Sherman S Hendrix (Immediate Past President)	$0	$0
Richard E Clopton (Custodian Of Back Issues)	$0	$0
Dennis J Richardson (Archivist/Librian)	$0	$0
Michael Zimmerman (Executive Committee Member)	$0	$0
Ann Barse (Executive Committee Member)	$0	$0

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990-EZ

Filed on Feb. 23, 2021

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

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Fiscal Year Ending Dec.
2019

Revenue

$38,163

Expenses

$28,296

Net Income

$9,867

Net Assets

$198,592

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$491	1.3%
Program Services	$35,721	93.6%
Investment Income	$788	2.1%
Net Fundraising	-$3,481
Sales of Assets	$0
Net Inventory Sales	-$171
Other Revenue	$584	1.5%

Assets/Debt
Total Assets	$198,802
Total Liabilities	$210
Net Assets	$198,592

Compensation

Key Employees and Officers	Compensation	Other
John M Hawdon (President)	$0	$0
Anne Vardo Zalik (Vice President)	$0	$0
Ashleigh B Smythe (Corresponding Secretary/Treasurer)	$0	$0
Anna J Phillips (Recording Secretary)	$0	$0
Autumn Smith Herron (Editor In Chief Of Comparative Para)	$0	$0
Kelly Weinersmith (Executive Committee Member At Large)	$0	$0
Damien O'halloran (Executive Committee Member At Large)	$0	$0

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990-EZ

Filed on March 30, 2020

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

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Fiscal Year Ending Dec.
2018

Revenue

$32,138

Expenses

-$32,485

Net Income

$64,623

Net Assets

$186,913

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$849	2.6%
Program Services	$26,852	83.6%
Investment Income	$506	1.6%
Net Fundraising	-$1,932
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$186,787
Total Liabilities	-$126
Net Assets	$186,913

990-EZ

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

PDF

Fiscal Year Ending Dec.
2017

Revenue

$37,622

Expenses

$30,434

Net Income

$7,188

Net Assets

$187,460

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$500	1.3%
Program Services	$32,025	85.1%
Investment Income	$502	1.3%
Net Fundraising	-$416
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$746	2.0%

Assets/Debt
Total Assets	$187,692
Total Liabilities	$232
Net Assets	$187,460

The IRS has provided extracted financial data for this filing, but has not yet released the source documents.

Fiscal Year Ending Dec.
2016

Revenue

$41,690

Expenses

$38,129

Net Income

$3,561

Net Assets

$180,503

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$956	2.3%
Program Services	$35,479	85.1%
Investment Income	$465	1.1%
Net Fundraising	-$260
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$594	1.4%

Assets/Debt
Total Assets	$180,749
Total Liabilities	$246
Net Assets	$180,503

990-EZ

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

PDF

Fiscal Year Ending Dec.
2015

Revenue

$41,470

Expenses

$36,219

Net Income

$5,251

Net Assets

$177,188

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$730	1.8%
Program Services	$37,669	90.8%
Investment Income	$361	0.9%
Net Fundraising	-$2,712
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$142	0.3%

Assets/Debt
Total Assets	$177,321
Total Liabilities	$133
Net Assets	$177,188

990-EZ

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

PDF

Fiscal Year Ending Dec.
2014

Revenue

$40,969

Expenses

$34,477

Net Income

$6,492

Net Assets

$172,337

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$2,134	5.2%
Program Services	$33,372	81.5%
Investment Income	$280	0.7%
Net Fundraising	-$1,239
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$20	0.0%

Assets/Debt
Total Assets	$172,337
Total Liabilities	$0
Net Assets	$172,337

990-EZ

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

PDF

Fiscal Year Ending Dec.
2013

Revenue

$40,487

Expenses

$34,278

Net Income

$6,209

Net Assets

$165,497

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$902	2.2%
Program Services	$33,391	82.5%
Investment Income	$629	1.6%
Net Fundraising	-$611
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$469	1.2%

Assets/Debt
Total Assets	$165,845
Total Liabilities	$348
Net Assets	$165,497

990-EZ

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

PDF

Fiscal Year Ending Dec.
2012

Revenue

$40,898

Expenses

$37,440

Net Income

$3,458

Net Assets

$159,380

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$1,649	4.0%
Program Services	$33,326	81.5%
Investment Income	$1,297	3.2%
Net Fundraising	-$1,344
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$159,637
Total Liabilities	$257
Net Assets	$159,380

990-EZ

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

PDF

PDF (2 of 2)

Fiscal Year Ending Dec.
2011

Revenue

$44,322

Expenses

$42,078

Net Income

$2,244

Net Assets

$156,442

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$636	1.4%
Program Services	$35,420	79.9%
Investment Income	$1,703	3.8%
Net Fundraising	-$873
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$25	0.1%

Assets/Debt
Total Assets	$156,179
Total Liabilities	-$263
Net Assets	$156,442

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.

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Updated September 25, 2025

Helminthological Society Of Washington

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $47.2k (2024)

Expenses $36.8k (2024)

Total Assets $458k (2024)

Total Liabilities $0 (2024)

Tax Filings by Year

Fiscal Year Ending Dec. 2024

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Dec. 2023

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Dec. 2022

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Dec. 2021

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Dec. 2020

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Dec. 2019

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Dec. 2018

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2017

Extracted Financial Data

Extracted Financial Data from 990-EZ

No Document Links

Fiscal Year Ending Dec. 2016

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2015

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2014

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2013

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2012

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2011

Revenue

$47.2k (2024)

Expenses

$36.8k (2024)

Total Assets

$458k (2024)

Total Liabilities

$0 (2024)

Fiscal Year Ending Dec.
2024

Fiscal Year Ending Dec.
2023

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2022

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2021

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2020

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2019

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2018

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2017

Fiscal Year Ending Dec.
2016

Fiscal Year Ending Dec.
2015

Fiscal Year Ending Dec.
2014

Fiscal Year Ending Dec.
2013

Fiscal Year Ending Dec.
2012

Fiscal Year Ending Dec.
2011

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Fiscal Year Ending Dec.
2009

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