THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY Charity Report

Public IRS 990 nonprofit record

THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY

EIN 23-6434390 · Medical Research (H300)

What they do

THE MISSION of THE WISTAR INSTITUTE is to MARSHAL THE TALENTS of OUTSTANDING SCIENTISTS THROUGH A HIGHLY ENABLED CULTURE of BIOMEDICAL COLLABORATION and INNOVATION IN ORDER to SOLVE SOME of THE WORLDS MOST CHALLENGING and IMPORTANT PROBLEMS IN THE FIELD of CANCER and IMMUNOLOGY, and PRODUCE GROUND-BREAKING ADVANCES IN WORLD HEALTH. CONSISTENT WITH A PIONEERING LEGACY of LEADERSHIP IN NOT-FOR-PROFIT BIOMEDICAL RESEARCH and A TRACK-RECORD of LIFE-SAVING CONTRIBUTIONS IN IMMUNOLOGY and CELL BIOLOGY, THE WISTAR INSTITUTE AIMS to PURSUE NOVEL and COURAGEOUS RESEARCH PATHS to LIFE SCIENCE DISCOVERY, and to ACCELERATE/POTENTIATE THE IMPACT of THOSE DISCOVERIES BY SHORTENING THE PATH FROM BENCH to BEDSIDE.

Before you give

Should I give to this charity?

Easy charity check

Look at where the money went

Of every $100 spent, about $79.20 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 leaders51 people are listed in the latest report.

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

Money made simple

92.07%of revenue went to mission work79.2% of expenses · Program services

2.02%of revenue went to fundraising1.7% of expenses

$116.28spent for every $100 of revenueSpending was higher than revenue this year.

22.19%of revenue went to management and office costs19.1% of expenses

$4.66in assets for every $1 spent this yearSome assets cannot be spent right away.

74.6%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.

Worth asking: Expenses exceeded revenue by $12,588,000 this year. Ask whether that was planned or caused by a one-time event.

Pay context: The highest compensation shown in this filing is $758,347 for DARIO ALTIERI MD (PRESIDENT & CEO, DIRECTOR OF WISTAR CANCER CENTER). 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$77,322,000

Mission workProgram services$71,192,00092.07% of revenue79.2% of expenses

ManagementOffice and general costs$17,159,00022.19% of revenue19.1% of expenses

FundraisingAsking for donations$1,559,0002.02% of revenue1.7% of expenses

Total expenses$89,910,000116.28% of revenue

Expenses were greater than revenue, so the colored ring fills the available $100 and the total above 100% is shown below.

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: 79.2% mission · 19.1% management · 1.7% fundraisingTotal expenses: 116.28% of revenue

2024Expense mix: 78.8% mission · 19.2% management · 2.0% fundraisingTotal expenses: 100.79% of revenue

2023Expense mix: 81.2% mission · 17.1% management · 1.7% fundraisingTotal expenses: 50.66% of revenue

2022Expense mix: 82.1% mission · 16.0% management · 1.9% fundraisingTotal expenses: 93.76% of revenue

2021Expense mix: 79.2% mission · 19.0% management · 1.9% fundraisingTotal expenses: 59.65% of revenue

2020Expense mix: 77.9% mission · 20.1% management · 2.0% fundraisingTotal expenses: 102.44% of revenue

2019Expense mix: 78.2% mission · 20.0% management · 1.8% fundraisingTotal expenses: 106.58% of revenue

2018Expense mix: 79.5% mission · 18.4% management · 2.0% fundraisingTotal expenses: 84.94% of revenue

Money in and money out

Revenue$77,322,000

Expenses$89,910,000

Annual shortfall $12,588,000 Expenses were higher than revenue 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)$71,192,000 · 79.2% of expenses

Management and office costs$17,159,000 · 19.1% of expenses

Fundraising$1,559,000 · 1.7% of expenses

See all reported dollar amounts

Revenue$77,322,000

Expenses$89,910,000

Assets$419,150,000

Income$115,594,000

Contributions$57,680,000

Mission work (program services)$71,192,000

Fundraising$1,559,000

Management and general$17,159,000

Stocks and bonds$230,812,000

Accounting fees$174,000

Investing fees$548,000

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

DARIO ALTIERI MDPRESIDENT & CEO, DIRECTOR OF WISTAR CANCER CENTER · 55 hrs/week $758,347Base $701,631 · Other $56,716

LUIS MONTANERPROFESSOR VP, SCIENTIFIC OPERATIONS · 55 hrs/week $595,164Base $518,220 · Other $76,944

DAVID B WEINEREXECUTIVE VICE PRESIDENT · 55 hrs/week $570,149Base $497,122 · Other $73,027

GELVINA STEVENSONVP GEN COUNSEL, SECRETARY & GOVERNMENT RELATIONS · 55 hrs/week $457,213Base $411,550 · Other $45,663

PAUL LIEBERMANPROFESSOR · 55 hrs/week $426,346Base $355,586 · Other $70,760

HEATHER A STEINMANVP FOR BUSINESS DEVELOP & E. D. TECH · 55 hrs/week $401,752Base $360,818 · Other $40,934

CONSTANTINE STOIOSCHIEF FINANCIAL OFFICER · 55 hrs/week $389,476Base $316,654 · Other $72,822

MEENHARD HERLYNPROFESSOR · 55 hrs/week $377,098Base $306,752 · Other $70,346

MICHAEL CRISCUOLOVP, DEVELOPMENT · 55 hrs/week $352,106Base $314,962 · Other $37,144

CHENGYU LIANGPROFESSOR · 55 hrs/week $339,719Base $267,432 · Other $72,287

MAUREEN MURPHYPROFESSOR · 55 hrs/week $333,696Base $271,408 · Other $62,288

JOSEPH SALVINOPROFESSOR · 55 hrs/week $331,897Base $292,613 · Other $39,284

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 (51)

DARIO ALTIERI MDPRESIDENT & CEO, DIRECTOR OF WISTAR CANCER CENTER

LUIS MONTANERPROFESSOR VP, SCIENTIFIC OPERATIONS

DAVID B WEINEREXECUTIVE VICE PRESIDENT

GELVINA STEVENSONVP GEN COUNSEL, SECRETARY & GOVERNMENT RELATIONS

PAUL LIEBERMANPROFESSOR

HEATHER A STEINMANVP FOR BUSINESS DEVELOP & E. D. TECH

CONSTANTINE STOIOSCHIEF FINANCIAL OFFICER

MEENHARD HERLYNPROFESSOR

MICHAEL CRISCUOLOVP, DEVELOPMENT

CHENGYU LIANGPROFESSOR

MAUREEN MURPHYPROFESSOR

JOSEPH SALVINOPROFESSOR

JEFFREY FAHNOECHIEF INFORMATION OFFICER

PETER SCARPATIVP OPERATIONS

JOANN MENDELVICE PRESIDENT, HUMAN RESOURCES

RICHARD M HOROWITZTRUSTEE - BOARD CHAIR

WILLIAM A SLAUGHTERTRUSTEE

PERRY A LERNERTRUSTEE

ROBERT H ROCKTRUSTEE

PATRICK OATESTRUSTEE

RONALD CAPLANTRUSTEE

MILTON S SCHNEIDERTRUSTEE

SAMUEL V RHOADSTRUSTEE

SOZI TULANTETRUSTEE

SQUIRE SERVANCETRUSTEE (LEFT DEC 2025)

MAX BERGERTRUSTEE

STEVEN V ABRAMSONTRUSTEE

SUSAN B DILLON PHDTRUSTEE - VICE CHAIR

SUSAN S MCDONALD PHDTRUSTEE

ABRAHAM L MORRISTRUSTEE

EDWARD ZIFF PHDTRUSTEE

ADELE K SCHAEFFERTRUSTEE (LEFT SEPT 2025)

ALEISTER SAUNDERSTRUSTEE

ARTHUR DANTCHIKTRUSTEE

ARTHUR M PAPPASTRUSTEE

CAROLYN MAGILLTRUSTEE

CATHERINE CREESETRUSTEE (JOINED JAN 2025)

CHARLES CAIRNSTRUSTEE

DANIEL K FITZPATRICKTRUSTEE (LEFT MAY 2025)

DAVID KRUPNICKTRUSTEE

DOUGLAS S BRIGGSTRUSTEE

JOY TAYLORTRUSTEE

ELIZABETH MCKEE ANDERSONTRUSTEE

ELLIOT MENSCHIKTRUSTEE (JUNE TO DEC 2025)

ELLIOT NORRYTRUSTEE

GERALD B RORERTRUSTEE

HELEN P PUDLIN ESQTRUSTEE

IRA BRINDTRUSTEE

JAMES LOVETTTRUSTEE (ELECTED DEC 2025)

JOSEPH A GOLDBLUMTRUSTEE

JOSHUA FRIEDMANTRUSTEE (ELECTED MAR 2025)

About this charity

Recognized since: January 1946
Location: 3601 SPRUCE ST, PHILADELPHIA, PA 19104-4205
County: Philadelphia
In care of: CONSTANTINE STOIOS
Primary officer: CONSTANTINE STOIOS, CHIEF FINANCIAL OFFICER

How to reach them

WebsiteVisit the charity’s website Phone(215) 495-6922

Filing and classification

Latest tax year: 2025
Tax period began: January 1, 2025
Return type: 990
NTEE classification: Medical Research (H300)