Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 20-2510044

THE SIDE-OUT FOUNDATION

Tax-exempt · FAIRFAX, VA 22030

Financials

$1.4M$1.2M2023$1.5M$1.6M2024
Revenue Expenses · by fiscal year end
Financials of THE SIDE-OUT FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
March 31, 2025990$1,478,970$1,642,957-$163,987$2,106,993$401,907$1,705,086
March 31, 2024990$1,361,469$1,188,997$172,472$2,115,644$246,571$1,869,073
Financial details: 990 for the year ended March 31, 2025

Revenue

Contributions, gifts and grants
$1,416,040
Program service revenue
$0
Investment income
$52,869
Net income from sales of inventory
$10,061
Other revenue
$10,061

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$292,671
Other salaries and wages
$399,306
Salaries, compensation and benefits (total)
$776,542
Professional fundraising fees
$0
Accounting fees
$27,736
Occupancy
$61,554
Travel
$34,591
Depreciation
$2,412
Program services (functional)
$1,232,025
Management and general (functional)
$255,342
Fundraising (functional)
$155,590

Balance sheet and other

Total assets, start of year
$2,115,644
Total assets, end of year
$2,106,993
Total liabilities, end of year
$401,907
Net assets, end of year
$1,705,086
Land, buildings and equipment
$8,495
Net assets without donor restrictions
$1,705,086
Gross receipts
$1,488,321
Employees
7
Volunteers
0
Year formed
2005
State of legal domicile
VA

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended March 31, 2025, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
Ellen DempseyExecutive Director
Officer
40$149,908$6,663
Rick DunetzChief Vision Officer
Trustee or director, Officer
40$110,434$5,469
Gary ThompsonBoard chair
Trustee or director, Officer
1$0$0
Stephanie ReffeyDirector
Trustee or director
1$0$0
Sharon DingmanDirector
Trustee or director
1$0$0
990 for the year ended March 31, 2024: 4 people
NameTitleHours / weekCompensationOther / benefits
Rick DunetzChief Vision Officer
Trustee or director, Officer
40$85,425$3,714
Ellen DempseyExecutive Director
Officer
40$75,000$2,557
Gary ThompsonBoard chair
Trustee or director, Officer
1$0$0
Stephanie ReffeyDirector
Trustee or director
1$0$0

Address and contacts

Address (IRS master file)
11208 WAPLES MILL RD STE 103, FAIRFAX, VA 22030-6077
Principal officer (990 for 2024)
Rick Dunetz, 11208 Waples Mill Road 103, Fairfax, VA 22030
Signed the 990
Rick Dunetz, Executive Director
Phone
(877) 344-7465
Return prepared by
Kositzka Wicks and Company

Mission

See Schedule O.

990 for the year ended March 31, 2025

Program accomplishments

  • During the 20242025 fiscal year we achieved the following research objectives.1. Publication in the British Journal of Cancer. Our manuscript, "Functional activation of the AKTmTOR signalling axis in a real-world metastatic breast cancer cohort" by Rasad D, Baldelli E, Blais EM, Davis J, El Gazzah E, Mueller C, Gomeiz A, Ibrahim A, Newrekar AV, Corgiat BA, Dunetz R, Petricoin III EF, Wei Q, and Pierobon M, was published in the British Journal of Cancer (Br J Cancer. 2024 Nov;131(9):1543-1554). This study analyzed a real-world cohort of 171 metastatic breast cancer patients who underwent multi-omic profiling through Perthera. The primary objective was to characterize metastatic lesions from a genomic perspective and compare them with historical cohorts of primary tumors, with a particular focus on how genetic alterations in the AKTmTOR pathway translate into phenotypic changes at the protein level. The findings represent an important step forward for precision medicine and demonstrate the superiority of multi-omic approaches in identifying patients who may respond to inhibitors targeting the AKT-mTOR pathway. In addition, the study further validated that increased activation of AKT downstream substrates is associated with response to CDK4/6 inhibitor therapy, consistent with observations from the Side Out 3 clinical trial (NCT03195192).2. Discovery of a novel protein-protein interaction with therapeutic relevance. We identified a previously uncharacterized protein-protein interaction that represents a new druggable axis and a potential predictor of response to CDK4/6 inhibitors combined with endocrine therapy in metastatic breast cancer. This discovery emerged from preclinical studies conducted at George Mason University and resulted in the submission of a provisional patent application for the development of a novel diagnostic test to guide patient allocation to targeted treatments.
    Expenses $1,232,025

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in March, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025March 31, 2026August 17, 2026Not on file
2024March 31, 2025August 15, 2025990 on file
2023March 31, 2024August 15, 2024990 on file

IRS record

EIN
20-2510044
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2005
Accounting year ends
March
Files
Form 990 or 990-EZ
Category (NTEE)
Education (B11)
Assets (IRS master file)
$2,106,993
Income (IRS master file)
$1,488,321

Filing history

FormYear endedRevenueExpensesAssetsReturn
990March 2025$1,478,970$1,642,957$2,106,993XML
990March 2024$1,361,469$1,188,997$2,115,644XML
990March 2023$1,232,509$1,349,545$2,116,765IRS
990March 2022–––IRS
990March 2021–––IRS
990March 2020–––IRS
990March 2019–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 20-2510044).

Questions about THE SIDE-OUT FOUNDATION

What is the EIN of THE SIDE-OUT FOUNDATION?
The employer identification number (EIN) of THE SIDE-OUT FOUNDATION is 20-2510044.
Is THE SIDE-OUT FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2005.
Are donations to THE SIDE-OUT FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does THE SIDE-OUT FOUNDATION file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of THE SIDE-OUT FOUNDATION due?
The return for tax year 2025 (the year ending March 31, 2026) is due August 17, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did THE SIDE-OUT FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended March 2025.
Who is the principal officer of THE SIDE-OUT FOUNDATION?
The 990 for the year ended March 31, 2025 names Rick Dunetz.
Who are the officers and directors of THE SIDE-OUT FOUNDATION?
The 990 for the year ended March 31, 2025 lists 5 people; 2 received compensation from the organization, the highest $149,908 (Ellen Dempsey, Executive Director).
How much revenue does THE SIDE-OUT FOUNDATION have?
On its 990 for the year ended March 31, 2025 it reported revenue of $1,478,970, expenses of $1,642,957 and total assets of $2,106,993 at year end.

Other nonprofits in FAIRFAX

All nonprofits in FAIRFAX · Virginia · Education