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Nonprofit · EIN 52-1867506

OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC

Tax-exempt · MOUNT LAUREL, NJ 08054

Financials

$1.5M$1.5M2023$1.9M$2M2024$1.8M$1.8M2025
Revenue Expenses · by fiscal year end
Financials of OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$1,767,697$1,827,194-$59,497$3,531,671$763,833$2,767,838
December 31, 2024990$1,855,604$1,986,716-$131,112$3,465,099$911,916$2,553,183
December 31, 2023990$1,547,647$1,539,682$7,965$3,363,821$936,464$2,427,357
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$144,038
Program service revenue
$1,126,142
Investment income
$114,337
Royalties
$383,180
Other revenue
$383,180

Expenses

Grants and similar amounts paid
$54,273
Compensation of officers, directors and key employees
$0
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$0
Legal fees
$3,414
Accounting fees
$12,141
Travel
$110,257
Program services (functional)
$1,305,458
Management and general (functional)
$521,736

Balance sheet and other

Total assets, start of year
$3,465,099
Total assets, end of year
$3,531,671
Total liabilities, end of year
$763,833
Net assets, end of year
$2,767,838
Publicly traded securities
$3,055,287
Net assets without donor restrictions
$2,676,900
Net assets with donor restrictions
$90,938
Gross receipts
$1,767,697
Employees
0
Volunteers
140
Year formed
1994
State of legal domicile
MD

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 December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
MARTIN ENGLUND MD PHDPRESIDENT
Trustee or director, Officer
7$0
GUN IL IM MD PHDPAST PRESIDENT
Trustee or director, Officer
7$0
NANCY LANEPAST PRESIDENT
Trustee or director, Officer
7$0
MAGALI CUCCHIARINISECRETARY
Trustee or director, Officer
5$0
MOHIT KAPOORTREASURER
Trustee or director, Officer
5$0
RIK LORIESDIRECTOR (TIL 4/25)
Trustee or director
5$0
ELENA LOSINADIRECTOR (TIL 4/25)
Trustee or director
5$0
AMANDA NELSONDIRECTOR
Trustee or director
5$0
CRISTINA RUIZ ROMERODIRECTOR
Trustee or director
5$0
MARTIN VAN DER ESCHDIRECTOR
Trustee or director
5$0
CHUNYI WENDIRECTOR
Trustee or director
5$0
JEREMIE SELIAMDIRECTOR
Trustee or director
5$0
THOMAS LINKDIRECTOR
Trustee or director
5$0
DON ANDERSONDIRECTOR
Trustee or director
5$0
EIJI SASAKIDIRECTOR
Trustee or director
5$0
2 more people on this return
NameTitleHours / weekCompensation
MATT HARKEYEARLY CAREER INV CHR(TIL 4/25)
Trustee or director
5$0
BROOKE PATTERSONEARLY CAREER INV CHR(TIL 4/25)
Trustee or director
5$0
990 for the year ended December 31, 2024: 23 people
NameTitleHours / weekCompensation
Gun IL IM MD PHDPres, Past Pres (Eff 4/24)
Trustee or director, Officer
7$0
Ali Mobasheri DPHILPast President (Til 4/24)
Trustee or director, Officer
7$0
Martin Englund MD PHDPres Elect, Pres (Eff 4/24)
Trustee or director, Officer
7$0
Nancy LaneTreas, Pres Elect (Eff 4/24)
Trustee or director, Officer
7$0
Ida K HaugenSecretary (Til 4/24)
Trustee or director, Officer
5$0
Flavia CicuttiniDirector (Til 4/24)
Trustee or director
5$0
Siddharth DasDirector (Til 4/24)
Trustee or director
5$0
Rik LoriesDirector
Trustee or director
5$0
Elena LosinaDirector
Trustee or director
5$0
Magali CucchiariniDir, Secretary (Eff 4/24)
Trustee or director, Officer
5$0
Mohit KapoorDir, Treasurer (Eff 4/24)
Trustee or director, Officer
5$0
Amanda NelsonDirector
Trustee or director
5$0
Cristina Ruiz RomeroDirector
Trustee or director
5$0
Martin Van Der EschDirector
Trustee or director
5$0
Chunyi WenDirector (Eff 4/24)
Trustee or director
5$0
Armaghan MahmoudianEarly Career Inv Chr(Til 4/24)
Trustee or director
5$0
Jesse CharltonEarly Career Inv Chr(Til 4/24)
Trustee or director
5$0
Matt HarkeyEarly Career Inv Chr(Eff 4/24)
Trustee or director
5$0
Brooke PattersonEarly Career Inv Chr(Eff 4/24)
Trustee or director
5$0
Jeremie SeliamDIRECTOR (Eff 4/24)
Trustee or director
5$0
Thomas LinkDirector (Eff 4/24)
Trustee or director
5$0
Don AndersonDirector (Eff 4/24)
Trustee or director
5$0
Eiji SasakiDirector (Eff 4/24)
Trustee or director
5$0
990 for the year ended December 31, 2023: 17 people
NameTitleHours / weekCompensation
GUN-IL IMPRESIDENT
Trustee or director, Officer
7$0
ALI MOBASHERIPAST PRESIDENT
Trustee or director, Officer
7$0
MARTIN ENGLUNDPRESIDENT-ELECT
Trustee or director, Officer
7$0
IDA HAUGENSECRETARY
Trustee or director, Officer
7$0
NANCY LANETREASURER
Trustee or director, Officer
7$0
FLAVIA CICUTTINIDIRECTOR
Trustee or director
5$0
MAGALI CUCCHIARINIDIRECTOR
Trustee or director
5$0
SIDDHARTH DASDIRECTOR
Trustee or director
5$0
MOHIT KAPOORDIRECTOR
Trustee or director
5$0
RIK LORIESDIRECTOR
Trustee or director
5$0
ELENA LOSINADIRECTOR
Trustee or director
5$0
AMANDA NELSONDIRECTOR
Trustee or director
5$0
CRISTINA RUIZ ROMERODIRECTOR
Trustee or director
5$0
MARTIN VAN DER ESCHDIRECTOR
Trustee or director
5$0
CHUNYI WENDIRECTOR
Trustee or director
5$0
JESSE CHARLTONEARLY CAREER INVESTIGATOR CHAIR
Trustee or director
5$0
ARMAGHAN MAHMOUDIANEARLY CAREER INVESTIGATOR CHAIR
Trustee or director
5$0

Address and contacts

Address (IRS master file)
1120 ROUTE 73 STE 200, MOUNT LAUREL, NJ 08054-5113
In care of
% NANCY LANE
Principal officer (990 for 2025)
Elizabeth Grotos, 1120 ROUTE 73 SUITE 200, MOUNT LAUREL, NJ 08054
Signed the 990
Elizabeth Grotos, Executive Director
Phone
(856) 642-4201
Return prepared by
WITHUMSMITHBROWN PC

Mission

OARSI IS THE FOREMOST INTERNATIONAL ORGANIZATION FOCUSED ON THE PREVENTION AND TREATMENT OF OSTEOARTHRITIS THROUGH THE PROMOTION AND PRESENTATION OF RESEARCH, EDUCATION AND THE WORLD-WIDE DISSEMINATION OF NEW KNOWLEDGE.

990 for the year ended December 31, 2025

Program accomplishments

  • WORLD CONGRESS: TO PROVIDE AND SHARE THE LATEST RESEARCH FOR THE PREVENTION AND TREATMENT OF OSTEOARTHRITIS.
    Expenses $867,556 · grants $12,273 · revenue $343,071
  • JOURNAL: TO INFORM READERS OF THE RECENT RESEARCH RELATED TO THE PREVENTION AND TREATMENT OF OSTEOARTHRITIS.
    Expenses $323,744 · revenue $769,561
  • OTHER PROGRAMS: OARSI PROVIDES SCHOLARSHIPS AND CONDUCTS VARIOUS MISCELLAENEOUS PROGRAMS THAT FURTHERS ITS OVERALL MISSION.
    Expenses $114,158 · grants $42,000 · revenue $13,510

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 December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
52-1867506
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
1994
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$3,531,671
Income (IRS master file)
$1,767,697

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$1,767,697$1,827,194$3,531,671XML
990December 2024$1,855,604$1,986,716$3,465,099XML
990December 2023$1,547,647$1,539,682$3,363,821XML
990December 2022$1,686,983$2,103,851$2,480,203IRS
990December 2021–––IRS
990December 2020–––IRS
990December 2018–––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 52-1867506).

Questions about OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC

What is the EIN of OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC?
The employer identification number (EIN) of OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC is 52-1867506.
Is OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1994.
Are donations to OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC 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 OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2025.
Who is the principal officer of OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC?
The 990 for the year ended December 31, 2025 names Elizabeth Grotos.
Who are the officers and directors of OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC?
The 990 for the year ended December 31, 2025 lists 17 people; 0 received compensation from the organization.
How much revenue does OSTEOARTHRITIS RESEARCH SOCIETY INTERNATIONAL INC have?
On its 990 for the year ended December 31, 2025 it reported revenue of $1,767,697, expenses of $1,827,194 and total assets of $3,531,671 at year end.

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