INTERNATIONAL SOCIETY ON THROMBOSIS AND HAEMOSTASIS INC Charity Report

Public IRS 990 nonprofit record

INTERNATIONAL SOCIETY ON THROMBOSIS AND HAEMOSTASIS INC

EIN 23-7428305 · Printing & Publishing (A33)

What they do

THE INTERNATIONAL SOCIETY ON THROMBOSIS and HAEMOSTASIS (ISTH) ADVANCES THE UNDERSTANDING, PREVENTION, DIAGNOSIS and TREATMENT of CONDITIONS RELATED to THROMBOSIS and HEMOSTASIS. THE SOCIETY is DEDICATED to TRANSFORMATIVE SCIENTIFIC DISCOVERIES and CLINICAL PRACTICES, THE DEVELOPMENT of YOUNG PROFESSIONALS and THE EDUCATION of PHYSICIANS, SCIENTISTS and ALLIED HEALTH PROFESSIONALS WHEREVER THEY MAY LIVE.

Before you give

Should I give to this charity?

Easy charity check

Look at where the money went

Of every $100 spent, about $80.00 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 leaders25 people are listed in the latest report.

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

Money made simple

74.66%of revenue went to mission work80.0% of expenses · Program services

2.45%of revenue went to fundraising2.6% of expenses

$93.31spent for every $100 of revenueRevenue covered expenses this year.

16.20%of revenue went to management and office costs17.4% of expenses

$1.57in assets for every $1 spent this yearSome assets cannot be spent right away.

18.4%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.

Pay context: The highest compensation shown in this filing is $440,035 for THOMAS REISER (EXECUTIVE DI). Compare pay with organizations of similar size and complexity.

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$12,803,951

Mission workProgram services$9,558,80274.66% of revenue80.0% of expenses

ManagementOffice and general costs$2,074,70216.20% of revenue17.4% of expenses

FundraisingAsking for donations$313,9372.45% of revenue2.6% of expenses

Revenue left after expensesReported annual surplus$856,5106.69% of revenueShown in gray on the chart

Total expenses$11,947,44193.31% 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: 80.0% mission · 17.4% management · 2.6% fundraisingTotal expenses: 93.31% of revenue

2024Expense mix: 79.6% mission · 17.7% management · 2.7% fundraisingTotal expenses: 118.29% of revenue

2023Expense mix: 73.3% mission · 24.2% management · 2.5% fundraisingTotal expenses: 106.17% of revenue

2022Expense mix: 79.6% mission · 18.6% management · 1.8% fundraisingTotal expenses: 112.32% of revenue

2021Expense mix: 74.3% mission · 25.0% management · 0.7% fundraisingTotal expenses: 83.36% of revenue

2020Expense mix: 82.6% mission · 16.2% management · 1.2% fundraisingTotal expenses: 97.15% of revenue

2019Expense mix: 79.9% mission · 19.2% management · 0.9% fundraisingTotal expenses: 93.18% of revenue

2018Expense mix: 72.9% mission · 26.2% management · 0.9% fundraisingTotal expenses: 127.67% of revenue

Money in and money out

Revenue$12,803,951

Expenses$11,947,441

Annual surplus $856,510 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)$9,558,802 · 80.0% of expenses

Management and office costs$2,074,702 · 17.4% of expenses

Fundraising$313,937 · 2.6% of expenses

See all reported dollar amounts

Revenue$12,803,951

Expenses$11,947,441

Assets$18,797,413

Income$27,294,161

Contributions$2,360,597

Mission work (program services)$9,558,802

Fundraising$313,937

Grants given$430,119

Average grant$30,723

Management and general$2,074,702

Stocks and bonds$13,098,428

Accounting fees$14,000

Investing fees$69,392

People

Leadership and board

Tax year 2025

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

People reported as paid

Person and titleCompensation

THOMAS REISEREXECUTIVE DI · 40 hrs/week $440,035Base $385,551 · Other $54,484

LOUISE BANNONDIR MEMBRSHI · 40 hrs/week $229,718Base $198,498 · Other $31,220

JEFFREY CAIOLADIR FINANCE · 40 hrs/week $220,967Base $185,289 · Other $35,678

ROBERT CLARKDIR PROGRAMS · 40 hrs/week $214,220Base $171,593 · Other $42,627

LISA ASTORGADIR MEETINGS · 40 hrs/week $213,377Base $192,528 · Other $20,849

ERICKA ROBSINSONDIR PEOPLE C · 40 hrs/week $198,831Base $165,205 · Other $33,626

FIONNUALA NI ANILEDIRECTOR · 1 hrs/week $3,000

Compensation alone does not tell whether pay is reasonable. Consider the charity’s size, work, location, and results.

See everyone listed on the board or leadership roster (25)

THOMAS REISEREXECUTIVE DI

LOUISE BANNONDIR MEMBRSHI

JEFFREY CAIOLADIR FINANCE

ROBERT CLARKDIR PROGRAMS

LISA ASTORGADIR MEETINGS

ERICKA ROBSINSONDIR PEOPLE C

FIONNUALA NI ANILEDIRECTOR

MARY CUSHMANDIRECTOR

WOLFRAM RUFPRESIDENT-EL

WOLFGANG MIESBACHDIRECTOR

SHINYA GOTODIRECTOR

SASKIA MIDDELDORPDIRECTOR

SAM SCHULMANTREASURER

SABINE EICHINGERDIRECTOR

ROBERT ARIENSDIRECTOR

PANTEP ANGCHAISUKSIRIPRESIDENT

OMOLADE AWODUDIRECTOR

NICOLA MUTCHDIRECTOR

ANA BOBANDIRECTOR

JEFFREY WEITZSECRETARY GE

JEAN CONNORSDIRECTOR

JAMES DOUKETISDIRECTOR

FERNANDA ORSIDIRECTOR

DONNA DIMICHELEDIRECTOR

CHRISTOPHER WARDDIRECTOR

About this charity

Recognized since: January 1975
Location: 301 S MCDOWELL ST STE 125 PMB 199, CHARLOTTE, NC 28204-0031
County: Mecklenburg
In care of: JEFFREY CAIOLA
Primary officer: JEFFREY CAIOLA, DIR FINANCE & OPS

How to reach them

WebsiteVisit the charity’s website Phone(919) 929-3807

Filing and classification

Latest tax year: 2025
Tax period began: January 1, 2025
Return type: 990
Tax preparer: KELLY PARTNERSFRS ACCOUNTANTS
NTEE classification: Printing & Publishing (A33)
IRS tax category: Printing & Publishing
Grant-giving organization: Yes