INTERNATIONAL SOCIETY FOR Charity Report

Public IRS 990 nonprofit record

INTERNATIONAL SOCIETY FOR

EIN 42-1517735 · Mathematics (U34)

What they do

to Promote The Development and Application of Bayesian Statistical Methods By Sponsoring and Organizing Meetings, Publishing of A Newsletter and Journal, and Sponsor Academic Awards and Maintain A Webpage Conference Organization.

Before you give

Should I give to this charity?

Easy charity check

Look at where the money went

Of every $100 spent, about $72.50 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 leaders22 people are listed in the latest report.

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

Money made simple

40.09%of revenue went to mission work72.5% of expenses · Program services

$55.28spent for every $100 of revenueRevenue covered expenses this year.

15.19%of revenue went to management and office costs27.5% of expenses

$3.85in assets for every $1 spent this yearSome assets cannot be spent right away.

96.1%of its money came from giftsOther money may come from services or investments.

Ask these three easy questions

Who did you help? Ask for a recent story or report that shows real results.
What will my money do? Ask exactly what your gift will pay for.
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$456,651

Mission workProgram services$183,05840.09% of revenue72.5% of expenses

ManagementOffice and general costs$69,38415.19% of revenue27.5% of expenses

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

Revenue left after expensesReported annual surplus$204,20944.72% of revenueShown in gray on the chart

Total expenses$252,44255.28% 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: 72.5% mission · 27.5% management · 0.0% fundraisingTotal expenses: 55.28% of revenue

2024Expense mix: 87.0% mission · 13.0% management · 0.0% fundraisingTotal expenses: 82.90% of revenue

2023Expense mix: 76.8% mission · 23.2% management · 0.0% fundraisingTotal expenses: 83.40% of revenue

2022Expense mix: 91.1% mission · 8.9% management · 0.0% fundraisingTotal expenses: 87.97% of revenue

2021Expense mix: 57.2% mission · 42.8% management · 0.0% fundraisingTotal expenses: 40.86% of revenue

2020Expense mix: 57.6% mission · 42.4% management · 0.0% fundraisingTotal expenses: 56.24% of revenue

2019Expense mix: 61.3% mission · 38.7% management · 0.0% fundraisingTotal expenses: 35.97% of revenue

2018Expense mix: 96.4% mission · 3.6% management · 0.0% fundraisingTotal expenses: 75.99% of revenue

Money in and money out

Revenue$456,651

Expenses$252,442

Annual surplus $204,209 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)$183,058 · 72.5% of expenses

Management and office costs$69,384 · 27.5% of expenses

See all reported dollar amounts

Revenue$456,651

Expenses$252,442

Assets$970,827

Income$456,651

Contributions$438,848

Mission work (program services)$183,058

Management and general$69,384

Stocks and bonds$904,100

Accounting fees$2,868

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 (22)

MARK STEELDIRECTOR

YANXUN XUTREASURER

TONY POURMOHAMADDIRECTOR

TOMMASO RIGONDIRECTOR

THAIS FONSECADIRECTOR

TAMARA BRODERICKDIRECTOR

SUBHASHIS GHOSALDIRECTOR

SINEAD WILLIAMSONDIRECTOR

SARA WADEDIRECTOR

MICHELE GUINGANIPRESIDENT ELECT

MATTEO RUGGIERODIRECTOR

AAD VAN DER VAARTPRESIDENT

LUCIA PACIDIRECTOR

LI MADIRECTOR

JULYAN ARBELDIRECTOR

GEORGE PAPADOGEORGOUDIRECTOR

FRANCESCO DENTIDIRECTOR

DONATELLO TELESCAEXECUTIVE SECRETARY

DANIELE DURANTEDIRECTOR

CLAIRE GORMLEYDIRECTOR

ANTONIO CANALEDIRECTOR

AMY HARRINGPAST PRESIDENT

About this charity

Recognized since: January 2002
Location: 2772 Cheekwood Cir, Ellicott City, MD 21042
County: San Mateo
In care of: YANXUN XU
Primary officer: YANXUN XU, Treasurer

How to reach them

WebsiteVisit the charity’s website Phone(773) 294-4950 Officer phone(806) 789-7736

Filing and classification

Latest tax year: 2025
Tax period began: January 1, 2025
Return type: 990
Tax preparer: QUALITY BACK OFFICE
NTEE classification: Mathematics (U34)
IRS tax category: Mathematics