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SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS

EIN 23-1496016 PHILADELPHIA, PA

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Revenue 2024
$17,724,481
Expenses 2024
$17,877,072

Program services were 68.3% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
U34C
Classification
8000
Street
3600 UNIV CITY SCIENCE CENTER

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

INCORPORATED IN 1952 AS A NON-PROFIT ORGANIZATION, SIAM HAS WORKED TOWARD THE FOLLOWING GOALS FOR MORE THAN 70 YEARS:-TO ADVANCE THE APPLICATION OF MATHEMATICS AND COMPUTATIONAL SCIENCE TO ENGINEERING, INDUSTRY, SCIENCE, AND SOCIETY;-TO PROMOTE RESEARCH THAT WILL LEAD TO EFFECTIVE NEW MATHEMATICAL AND COMPUTATIONAL METHODS AND TECHNIQUES FOR SCIENCE, ENGINEERING, INDUSTRY, AND SOCIETY;-TO PROVIDE MEDIA FOR THE EXCHANGE OF INFORMATION AND IDEAS AMONG MATHEMATICIANS, ENGINEERS, AND SCIENTISTS.

Activities or mission (Part I)

SIAM'S MISSION IS TO ADVANCE AND RAISE AWARENESS ABOUT APPLIED MATH AND RELATED FIELDS THROUGH ITS BOOKS, JOURNALS, CONFERENCES, ONLINE RESOURCES, AND A VARIETY OF PROGRAMS AND INITIATIVES.

  • SIAM'S PUBLICATIONS ARE A MEANS OF MEETING ONE OF THE PRIMARY OBJECTIVES FOR ORGANIZING THE SOCIETY: TO PROVIDE MEDIA FOR THE EXCHANGE OF INFORMATION AND IDEAS BETWEEN MATHEMATICIANS AND OTHER SCIENTISTS. SIAM'S JOURNAL PROGRAM PRODUCES 18 QUALITY, PEER-REVIEWED JOURNALS THAT ARE RESPECTED AND HIGHLY CITED THROUGHOUT THE APPLIED MATHEMATICS AND COMPUTATIONAL SCIENCE COMMUNITY. SIAM PUBLISHES APPROXIMATELY 20 HIGH-QUALITY BOOKS A YEAR BY AUTHORS WHO ARE EXPERTS IN THEIR FIELD, MAKING RELEVANT RESEARCH RESULTS ACCESSIBLE TO INDUSTRY AND SCIENCE WHILE ALSO PROMOTING THE INTERACTION BETWEEN MATHEMATICS AND OTHER DISCIPLINES SUCH AS ENGINEERING, SCIENCE, AND COMPUTING. SIAM NEWS, PUBLISHED 10 TIMES PER YEAR, IS THE NEWS JOURNAL REPORTING ON ISSUES AND DEVELOPMENTS AFFECTING THE APPLIED AND COMPUTATIONAL MATHEMATICS COMMUNITY. SIAM ALSO PUBLISHES UNDERGRADUATE RESEARCH ONLINE (SIURO), AN OPEN-ACCESS PUBLICATION FOR UNDERGRADUATES.

    Expenses $5,910,643 · Revenue $6,099,939

  • SIAM'S CONFERENCE PROGRAM PROVIDES MEMBERS AND ATTENDEES WITH A BROAD VIEW OF THE STATE-OF-THE-ART IN APPLIED MATHEMATICS AND COMPUTATIONAL SCIENCE. THROUGH INVITED PRESENTATIONS, PRIZE LECTURES, MINISYMPOSIA, MINI-TUTORIALS, CONTRIBUTED PAPERS, AND POSTERS, MEMBERS ARE ABLE TO JOIN THEIR PEERS AND LEADING EXPERTS IN THE FIELD TO EXCHANGE IDEAS AND TO EXPAND THEIR PERSONAL AND PROFESSIONAL NETWORKS. SIAM HOLDS TEN TO TWELVE CONFERENCES EACH YEAR, EACH FOCUSED ON TIMELY TOPICS IN APPLIED MATHEMATICS AND COMPUTATIONAL SCIENCE. THE WORK AT THESE CONFERENCES HELPS DEMONSTRATE THAT MANY SOCIETAL PROBLEMS CAN BE SOLVED THROUGH VARIOUS METHODS OF APPLIED MATHEMATICS AND COMPUTATIONAL SCIENCE. SIAM OFFERS TRAVEL SUPPORT FOR STUDENTS THROUGH SIAM STUDENT TRAVEL AWARDS TO ATTEND THE CONFERENCES.

    Expenses $3,732,690 · Grants $109,936 · Revenue $3,159,355

  • THROUGH SIAM MEMBERSHIP, INDIVIDUALS PARTICIPATE IN THE INTERNATIONAL COMMUNITY OF OVER 14,300 MATHEMATICIANS, COMPUTER SCIENTISTS, NUMERICAL ANALYSTS, ENGINEERS, STATISTICIANS, PHYSICISTS, EDUCATORS, AND STUDENTS FROM 103 COUNTRIES SUPPORTING THE PROFESSION AND ADVANCING THE FIELDS OF APPLIED MATHEMATICS AND COMPUTATIONAL SCIENCE. MEMBERSHIP ALLOWS BOTH PROFESSIONALS AND STUDENTS THE OPPORTUNITY TO NETWORK AND EXCHANGE IDEAS WITH PEERS, VISIBILITY IN THE APPLIED SCIENCE, MATHEMATICS, AND COMPUTATIONAL SCIENCE COMMUNITIES, ACCESS TO CUTTING-EDGE RESEARCH, AND THE OPPORTUNITY TO SERVE ON SIAM COMMITTEES TO HELP GUIDE THE FUTURE OF APPLIED MATHEMATICS AND COMPUTATIONAL SCIENCE.

    Expenses $959,053 · Revenue $1,034,190

  • OTHER PROGRAMS INCLUDE THE M3 CHALLENGE, WHICH IS AN APPLIED MATHEMATICS COMPETITION FOR HIGH SCHOOL STUDENTS AND OTHER PROGRAMS TO SUPPORT STUDENTS AND EARLY CAREER APPLIED MATHEMATICIANS.

    Expenses $1,610,654 · Grants $224,996 · Revenue $1,354,450

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Carol Woodward

    PRESIDENT ELECT AS OF 01/24

    Total calculated
    $0
    Hours/week
    7.5
  • Samuel Gubins

    TREASURER

    Total calculated
    $0
    Hours/week
    7.5
  • Alison Ramage

    TRUSTEE -CHAIRPERSON

    Total calculated
    $0
    Hours/week
    1
  • Liliana Borcea

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Raymond Chan

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Ulrike Yang

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Thomas A Grandine

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Jan Hesthaven

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Ricardo Cortez

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Cynthia Phillips

    TRUSTEE AS OF 01/24

    Total calculated
    $0
    Hours/week
    1
  • Beatrice Riviere

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Bonita V Saunders

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Chi-Wang Shu

    TRUSTEE

    Total calculated
    $0
    Hours/week
    1
  • Suzanne L Weekes

    CHIEF EXECUTIVE OFFICER

    Total calculated
    $445,598
    From this org
    $399,604
    From related orgs
    $0
    Other
    $45,994
    Hours/week
    36.25

    Schedule J breakdown matched by us

    Base
    $379,354
    Bonus
    $0
    Other
    $20,250
    Deferred
    $30,233
    Nontaxable benefits
    $15,761
    Filer's total
    $445,598
  • Susan A Palantino

    CHIEF OPERATING OFFICER

    Total calculated
    $305,323
    From this org
    $260,511
    From related orgs
    $0
    Other
    $44,812
    Hours/week
    36.25

    Schedule J breakdown matched by us

    Base
    $260,511
    Bonus
    $0
    Other
    $0
    Deferred
    $30,500
    Nontaxable benefits
    $14,312
    Filer's total
    $305,323
  • Sven Leyffer

    PRESIDENT

    Total calculated
    $0
    Hours/week
    7.5
  • Sherry Li

    VICE PRESIDENT AT LARGE AS OF 01/24

    Total calculated
    $0
    Hours/week
    7.5
  • Lea Jenkins

    VICE PRESIDENT FOR EDUCATION AS OF 01/24

    Total calculated
    $0
    Hours/week
    7.5
  • Ron Buckmire

    VICE PRESIDENT FOR EQUITY, DIVERSITY

    Total calculated
    $0
    Hours/week
    7.5
  • Sharon Arroyo

    VICE PRESIDENT FOR INDUSTRY

    Total calculated
    $0
    Hours/week
    7.5
  • James G Nagy

    VICE PRESIDENT FOR PROGRAMS

    Total calculated
    $0
    Hours/week
    7.5
  • Howard Elman

    VICE PRESIDENT FOR PUBLICATIONS

    Total calculated
    $0
    Hours/week
    7.5
  • Alejandro Aceves

    VICE PRESIDENT FOR SCIENCE POLICY

    Total calculated
    $0
    Hours/week
    7.5
  • Karen Devine

    SECRETARY AS OF 01/24

    Total calculated
    $0
    Hours/week
    7.5
  • Kivmars H Bowling

    DIRECTOR, PUBLICATIONS

    Total calculated
    $247,872
    From this org
    $209,674
    From related orgs
    $0
    Other
    $38,198
    Hours/week
    36.25

    Schedule J breakdown matched by us

    Base
    $209,674
    Bonus
    $0
    Other
    $0
    Deferred
    $22,500
    Nontaxable benefits
    $15,698
    Filer's total
    $247,872

The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $17,724,481
    Expenses
    $17,877,072
    Contributions
    $2,026,646
    Grants paid
    $334,932
  • 2023
    Revenue
    $15,435,934
    Expenses
    $15,162,511
    Contributions
    $635,144
    Grants paid
    $783,001
  • 2022
    Revenue
    $14,882,104
    Expenses
    $13,907,260
    Contributions
    $1,636,758
    Grants paid
    $187,233

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2024 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2023 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2022 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2021 · 990

    Revenue
    $15,208,892
    Expenses
    $11,389,145
    Assets (EOY)
    $62,518,550
  • 2021 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2020 · 990

    Revenue
    $12,089,556
    Expenses
    $10,934,876
    Assets (EOY)
    $53,114,829
  • 2020 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported
  • 2019 · 990

    Revenue
    $15,145,905
    Expenses
    $13,316,422
    Assets (EOY)
    $47,866,198
  • 2018 · 990

    Revenue
    $13,002,167
    Expenses
    $11,925,561
    Assets (EOY)
    $41,600,454
  • 2017 · 990

    Revenue
    $13,085,114
    Expenses
    $12,708,810
    Assets (EOY)
    $43,627,776

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

  • 2024 UNDERGRADAUTE SUMMER RESEARCH PROGRAM

  • SAN FRANCISCO STATE UNIVERSITY

    $40,339

    2024 UNDERGRADAUTE SUMMER RESEARCH PROGRAM

  • ARIZONA STATE UNIVERSITY

    $37,610

    2023 ADMINSTER AN UNDERGRADUATE RESEARCH PROGRAM

  • 2023 ADMINSTER AN UNDERGRADUATE RESEARCH PROGRAM

  • 2024 UNDERGRADAUTE SUMMER RESEARCH PROGRAM

  • 2024 UNDERGRADAUTE SUMMER RESEARCH PROGRAM

  • GEORGE MASON UNIVERSITY

    $34,200

    2023 ADMINSTER AN UNDERGRADUATE RESEARCH PROGRAM

  • CENTRAL WASHINGTON STATE UNIVERSITY

    $31,712

    2024 UNDERGRADAUTE SUMMER RESEARCH PROGRAM

  • YOUNGSTOWN STATE UNIVERSITY

    $30,987

    2023 ADMINSTER AN UNDERGRADUATE RESEARCH PROGRAM

  • 2023 ADMINSTER AN UNDERGRADUATE RESEARCH PROGRAM

The 10 largest by cash amount. The API serves every itemized grant.

Where these grants went next →

Grants received

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 11 November 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 9 November 2026 and read 9 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.