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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 84-3962057

DIPTERISTS SOCIETY

Tax-exempt · SACRAMENTO, CA 95823

Financials

$173K$170K2023$79K$32K2024$18K$12K2025
Revenue Expenses · by fiscal year end
Financials of DIPTERISTS SOCIETY by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-EZ$18,249$12,209$6,040$123,030–$123,030
December 31, 2024990-EZ$78,521$31,693$46,828$111,118$0$111,118
December 31, 2023990-EZ$173,130$170,341$2,789$64,290$0$64,290
Financial details: 990-EZ for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$17,521
Investment income
$728

Expenses

Grants and similar amounts paid
$6,000
Compensation of officers, directors and key employees
$0
Professional fees and payments to contractors
$1,350
Other expenses
$4,859

Balance sheet and other

Total assets, start of year
$111,118
Total assets, end of year
$123,030
Total liabilities, end of year
–
Net assets, end of year
$123,030
Cash, savings and investments
$123,030
Gross receipts
$18,249

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
STEPHEN D GAIMARIPresident20$0
MARTIN HAUSERVice President3$0
CHRISTOPHER J BORKENTDirector1$0
GIAR-ANN KUNGTreasurer5$0
THOMAS PAPEDirector1$0
SARAH OLIVEIRADirector1$0
JOHN MIDGLEYDirector1$0
NEAL EVENHUISDirector1$0
ERICA MCALISTERDirector1$0
ASHLEY KIRK-SPRIGGSDirector1$0
990-EZ for the year ended December 31, 2024: 12 people
NameTitleHours / weekCompensation
STEPHEN D GAIMARIPRESIDENT/DIRECTOR20$0
MARTIN HAUSERVICE PRESIDENT/DIRECTOR3$0
CHRISTOPHER J BORKENTTREASURER/DIRECTOR1$0
JESSICA GILLUNGCHAIRPERSON/DIRECTOR1$0
GIAR-ANN KUNGCHAIRPERSON/TREASURER/DIRECTOR1$0
BARBARA HAYFORDFIELD MEETING CO-CHAIR2$0
ANDREW FASBENDERFIELD MEETING CO-CHAIR2$0
JOHN MIDGLEYSECRETARY/DIRECTOR1$0
MATTHEW BERTONECHAIRPERSON1$0
NEAL EVENHUISDIRECTOR1$0
ASHLEY KIRK-SPRIGGSDIRECTOR1$0
ERICA MCALISTERDIRECTOR1$0
990-EZ for the year ended December 31, 2023: 8 people
NameTitleHours / weekCompensation
STEPHEN D GAIMARIPRESIDENT/DIRECTOR20$0
MARTIN HAUSERVICE PRESIDENT/DIRECTOR3$0
CHRISTOPHER J BORKENTTREASURER/DIRECTOR1$0
JESSICA GILLUNGCHAIRSPERSON/DIRECTOR1$0
GIAR-ANN KUNGCHAIRSPERSON4$0
BARBARA HAYFORDFIELD MEETING CO-CHAIR1$0
ANDREW FASBENDERFIELD MEETING CO-CHAIR1$0
SHAUN L WINTERTONSECRETARY/DIRECTOR1$0

Address and contacts

Address (IRS master file)
PO BOX 231113, SACRAMENTO, CA 95823-0401
Mailing address (990-N for 2022)
PO Box 231113, Sacramento CA 95823
Principal officer (990-N for 2022)
Stephen Gaimari, PO Box 231113, Sacramento CA 95823
Signed the 990-EZ
Giar-Ann Kung, Treasurer
Phone
(323) 505-9228
Return prepared by
Alec G Kellzi

California records

California keeps its own records of charities and corporations. Search them by EIN 84-3962057 or by the name DIPTERISTS SOCIETY.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

Mission

To advance the scientific study, understanding, and appreciation of Diptera

990-EZ for the year ended December 31, 2025

Program accomplishments

  • Symposium on ecology, natural history, morphology, pollination, and all aspects of the science and study of true flies
  • Research grants program for the study of true flies
    grants $6,000

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. 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-EZ on file
2023December 31, 2023May 15, 2024990-EZ on file

File the 2026 990-N for DIPTERISTS SOCIETY

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

IRS record

EIN
84-3962057
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2021
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Assets (IRS master file)
$123,030
Income (IRS master file)
$18,249

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZDecember 2025$18,249$12,209$123,030IRS
990-EZDecember 2024$78,521$31,693$111,118XML
990-EZDecember 2023$173,130$170,341$64,290XML
990-N for 2022
Officer: Stephen Gaimari
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Stephen Gaimari
December 31, 2020≤ $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 84-3962057).

Questions about DIPTERISTS SOCIETY

What is the EIN of DIPTERISTS SOCIETY?
The employer identification number (EIN) of DIPTERISTS SOCIETY is 84-3962057.
Is DIPTERISTS SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2021.
Are donations to DIPTERISTS SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does DIPTERISTS SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of DIPTERISTS SOCIETY 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 DIPTERISTS SOCIETY 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 DIPTERISTS SOCIETY?
The 990-N for 2022 names Stephen Gaimari.
Who are the officers and directors of DIPTERISTS SOCIETY?
The 990-EZ for the year ended December 31, 2025 lists 10 people; 0 received compensation from the organization.
How much revenue does DIPTERISTS SOCIETY have?
On its 990-EZ for the year ended December 31, 2025 it reported revenue of $18,249, expenses of $12,209 and total assets of $123,030 at year end.

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