INTERNATIONAL SOCIETY OF INFRARED MILLIMETER AND TERAHERTZ WAVES Charity Report

Public IRS 990 nonprofit record

INTERNATIONAL SOCIETY OF INFRARED MILLIMETER AND TERAHERTZ WAVES

EIN 27-0578778 · Science & Technology N.E.C. (U99)

What they do

SCIENTIFIC SOCIETY THAT HOSTS ONE SCIENTIFIC CONFERENCE EACH CALENDAR YEAR, PROMOTES THE CONTRIBUTION of RESEARCH to TWO SCIENTIFIC JOURNALS (IEEE TRANS. ON TERAHERTZ SCIENCE and TECHNOLOGY and JOURNAL of INFRARED, MILLIMETER, and TERAHERTZ WAVES), and SERVES AS STEWARD and DISTRIBUTOR of THE KENNETH J BUTTON PRIZE for SIGNIFICANT ADVANCES IN THE FIELD of INFRARED, MILLIMETER, and TERAHERTZ WAVES. THE SOCIETY is AN ALL VOLUNTEER ORGANIZATION WITH BY LAWS and WEBSITE AT WWW.IRMMW-THZ.ORG

Before you give

Should I give to this charity?

Easy charity check

Look at where the money went

Of every $100 spent, about $94.70 was reported for mission work. Use the spending picture below and ask what results that work produced.

Plain answer: A tax form cannot prove that a charity is doing good. It can show how the charity says it spent its money—and point out questions you should ask.

Basic facts we verified

IRS warning checkNo IRS revocation warning appears in this data.

Money report from 2025The charity has a recent tax report to read.

They explain their jobThe charity tells us what it is trying to do.

They name their leaders40 people are listed in the latest report.

You can reach themThey list contact information, so you can ask questions.

Money made simple

37.09%of revenue went to mission work94.7% of expenses · Program services

$39.17spent for every $100 of revenueRevenue covered expenses this year.

2.08%of revenue went to management and office costs5.3% of expenses

$20.70in assets for every $1 spent this yearSome assets cannot be spent right away.

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Is this really the charity? Give only through its official website or confirmed phone number.

Bottom line: Do not decide from a name, mission statement, or tax status alone. Look at where the money went, then ask what changed, who was helped, and what your gift will do. YouCanGiveBack does not endorse or grade organizations.

Money

Financial picture

Tax year 2025

A plain-language look at the latest Form 990 figures available. These numbers help you ask better questions; they do not, by themselves, rate whether a charity is good or bad.

$100revenue

How each $100 of revenue was used

The large number compares each expense with revenue. The smaller number shows its share of total expenses.

Total reported revenue$131,333

Mission workProgram services$48,71337.09% of revenue94.7% of expenses

ManagementOffice and general costs$2,7272.08% of revenue5.3% of expenses

FundraisingAsking for donations0.00% of revenue0.0% of expenses

Revenue left after expensesReported annual surplus$79,89360.83% of revenueShown in gray on the chart

Total expenses$51,44039.17% of revenue

Gray means reported revenue left after expenses for this filing year. It does not necessarily mean cash sitting in a bank account.

Has the pattern changed?

Colored bars = expense mix: how each year’s expenses were divided. Total expenses vs. revenue shows whether the charity spent less or more than it received. The current filing is first.

YearExpense mixDetails

2025CurrentExpense mix: 94.7% mission · 5.3% management · 0.0% fundraisingTotal expenses: 39.17% of revenue

2024Expense mix: 97.3% mission · 2.7% management · 0.0% fundraisingTotal expenses: 29.87% of revenue

2023Expense mix: 97.9% mission · 2.1% management · 0.0% fundraisingTotal expenses: 457.77% of revenue

2022Expense mix: 96.8% mission · 3.2% management · 0.0% fundraisingTotal expenses: 92.91% of revenue

2021Expense mix: 95.5% mission · 4.5% management · 0.0% fundraisingTotal expenses: 103.87% of revenue

2020Expense mix: 93.0% mission · 7.0% management · 0.0% fundraisingTotal expenses: 22.62% of revenue

2019Expense mix: 89.2% mission · 10.8% management · 0.0% fundraisingTotal expenses: 36.08% of revenue

2018Expense mix: 88.3% mission · 11.7% management · 0.0% fundraisingTotal expenses: 41.71% of revenue

Money in and money out

Revenue$131,333

Expenses$51,440

Annual surplus $79,893 Revenue was higher than expenses for this filing year.

Reported spending amounts

Mission work means the Form 990 category called program services. These are reported accounting categories—not an independent measurement of results.

Mission work (program services)$48,713 · 94.7% of expenses

Management and office costs$2,727 · 5.3% of expenses

See all reported dollar amounts

Revenue$131,333

Expenses$51,440

Assets$1,064,570

Income$168,149

Mission work (program services)$48,713

Management and general$2,727

Stocks and bonds$1,025,196

Accounting fees$5,255

People

Leadership and board

Tax year 2025

Names, titles, time, and compensation below are reported by the organization on its Form 990.

No compensation was reported for these leaders. The complete board and leadership roster is shown below.

Board and leadership roster (40)

PETER UHD JEPSENDIRECTOR

JEROME TIGNONDIRECTOR

JOHN JELONNEKDIRECTOR

LYUBOV TITOVADIRECTOR

MARTINA HAVENITHDIRECTOR

MASAHIKO TANIDIRECTOR

MICHELLE ORTOLANIDIRECTOR

MIN HUDIRECTOR

MIRIAM SERENA VITIELLODIRECTOR

NURIA LLOMBART-JUANDIRECTOR

PETER H SIEGELGENERAL SECRETARY, TREASURER

JEAN-FRANCOIS LAMPINDIRECTOR

QIANCHUN WENGDIRECTOR

ROGER LEWISCHAIR

TADAO NAGATSUMADIRECTOR

TAIICHI OTSUJIDIRECTOR

VINCENT WALLACEDIRECTOR

WEI LUDIRECTOR

XI-CHENG ZHANGDIRECTOR

YIMING ZHUDIRECTOR

ZACHARY TAYLORDIRECTOR

EMMA MACPHERSONDIRECTOR

ALEXANDER SHKURINOVDIRECTOR

ANDREA MARKELZVICE-CHAIR

AXEL ZEITLERDIRECTOR

BERARDI SENSALEDIRECTOR

CHIKO OTANIDIRECTOR

CLARA SARACENODIRECTOR

DANIEL MITTLEMANDIRECTOR

DAVID COOKEDIRECTOR

DIETMAR WAGNERDIRECTOR

ENRIQUE CASTRO-CAMUSDIRECTOR

EUN-MI CHOIDIRECTOR

FRANK HEGMANNDIRECTOR

GIAN PIERO GALLERANODIRECTOR

GREGORY DENISOVDIRECTOR

GUN-SIK PARKDIRECTOR

HELENA RODILLADIRECTOR

JAMES LLOYD-HUGHESDIRECTOR

JAN STAKEDIRECTOR

About this charity

Recognized since: January 2016
Location: 5166 OAKWOOD AVE, LA CANADA, CA 91011-2452
County: Los Angeles
In care of: % PETER H SIEGEL
Primary officer: PETER H SIEGEL, GENERAL SECRETARY

How to reach them

WebsiteVisit the charity’s website Emailpeter@irmmw-thz.org Phone(818) 669-9077

Filing and classification

Latest tax year: 2025
Tax period began: January 1, 2025
Return type: 990
Tax preparer: TEMO ARJANI LLP
NTEE classification: Science & Technology N.E.C. (U99)
IRS tax category: Science & Technology N.E.C.