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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 92-1899255

INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED

Tax-exempt · BETHESDA, MD 20814

Financials

$89K$84K2025
Revenue Expenses · by fiscal year end
Financials of INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-EZ$89,335$84,128$5,207$34,647–$34,647
Financial details: 990-EZ for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$30,412
Membership dues
$5,200
Program service revenue
$53,723

Expenses

Grants and similar amounts paid
$12,393
Compensation of officers, directors and key employees
$0
Other expenses
$71,735
Program services (functional)
$86,752

Balance sheet and other

Total assets, start of year
$29,440
Total assets, end of year
$34,647
Total liabilities, end of year
–
Net assets, end of year
$34,647
Cash, savings and investments
$34,647
Gross receipts
$89,335

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-EZ for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
Vito HernandezSecretary6$0
Limei ZhangPresident8$0
Lee EidenTreasurer6$0

Address and contacts

Address (IRS master file)
4302 KENTBURY DR, BETHESDA, MD 20814-4640
In care of
% LEE ELMER EIDEN
Mailing address (990-N for 2024)
4302 KENTBURY DR, BETHESDA MD 20814
Principal officer (990-N for 2024)
Lee Eiden, 4302 KENTBURY DR, BETHESDA MD 20814
Signed the 990-EZ
Lee Eiden, Treasurer
Phone
(301) 346-6578

Mission

The aims of the Society are scientific and educational, to benefit the public via organization of a biennal International Symposium on regulatory peptides (RegPep), and promulgation of this meeting and other workshops and conferences, to advance the regulatory peptide field

990-EZ for the year ended December 31, 2025

Program accomplishments

  • Organized and hosted RegPep25, the 25th International symposium on Regulatory Pepdides, held in Washington. The conference included plenary lectures, symposia, early career researcher awards, accomodation and travel support, gala dinner and networking activities to advance research in the regulatory peptide field. 59 delegates benefited from the event
    Expenses $82,009 · grants $12,393
  • Membership and research suport: Provided membership services, maintained the society website and communication tools and supported international collaborations and professional development for researchers in the regulatory peptide field.
    Expenses $2,119
  • Printing proceedings, posters, banners and flyers for dissemination of the conference, research in Regulatory peptide field and delegate information
    Expenses $2,624

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-EZ on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-EZ for INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
92-1899255
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
2023
Accounting year ends
December
Files
Form 990 or 990-EZ
Category (NTEE)
Medical research (H03)
Assets (IRS master file)
$34,647
Income (IRS master file)
$89,335

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZDecember 2025$89,335$84,128$34,647IRS
990-N for 2024
Officer: Lee Eiden
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Limei Zhang Ji
December 31, 2023≤ $50,000 receipts––e-Postcard

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 92-1899255).

Questions about INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED

What is the EIN of INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED?
The employer identification number (EIN) of INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED is 92-1899255.
Is INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2023.
Are donations to INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED 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 INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED 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 INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED last file with the IRS?
The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
Who is the principal officer of INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED?
The 990-N for 2024 names Lee Eiden.
Who are the officers and directors of INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED?
The 990-EZ for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
How much revenue does INTERNATIONAL REGULATORY PEPTIDE SOCIETY INCORPORATED have?
On its 990-EZ for the year ended December 31, 2025 it reported revenue of $89,335, expenses of $84,128 and total assets of $34,647 at year end.

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