- 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 WoodwardCAROL WOODWARD
PRESIDENT ELECT AS OF 01/24
- Total calculated
- $0
- Hours/week
- 7.5
-
Samuel GubinsSAMUEL GUBINS
TREASURER
- Total calculated
- $0
- Hours/week
- 7.5
-
Alison RamageALISON RAMAGE
TRUSTEE -CHAIRPERSON
- Total calculated
- $0
- Hours/week
- 1
-
Liliana BorceaLILIANA BORCEA
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Raymond ChanRAYMOND CHAN
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Ulrike YangULRIKE YANG
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Thomas A GrandineTHOMAS A GRANDINE
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Jan HesthavenJAN HESTHAVEN
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Ricardo CortezRICARDO CORTEZ
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Cynthia PhillipsCYNTHIA PHILLIPS
TRUSTEE AS OF 01/24
- Total calculated
- $0
- Hours/week
- 1
-
Beatrice RiviereBEATRICE RIVIERE
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Bonita V SaundersBONITA V SAUNDERS
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Chi-Wang ShuCHI-WANG SHU
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Suzanne L WeekesSUZANNE 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 PalantinoSUSAN 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 LeyfferSVEN LEYFFER
PRESIDENT
- Total calculated
- $0
- Hours/week
- 7.5
-
Sherry LiSHERRY LI
VICE PRESIDENT AT LARGE AS OF 01/24
- Total calculated
- $0
- Hours/week
- 7.5
-
Lea JenkinsLEA JENKINS
VICE PRESIDENT FOR EDUCATION AS OF 01/24
- Total calculated
- $0
- Hours/week
- 7.5
-
Ron BuckmireRON BUCKMIRE
VICE PRESIDENT FOR EQUITY, DIVERSITY
- Total calculated
- $0
- Hours/week
- 7.5
-
Sharon ArroyoSHARON ARROYO
VICE PRESIDENT FOR INDUSTRY
- Total calculated
- $0
- Hours/week
- 7.5
-
James G NagyJAMES G NAGY
VICE PRESIDENT FOR PROGRAMS
- Total calculated
- $0
- Hours/week
- 7.5
-
Howard ElmanHOWARD ELMAN
VICE PRESIDENT FOR PUBLICATIONS
- Total calculated
- $0
- Hours/week
- 7.5
-
Alejandro AcevesALEJANDRO ACEVES
VICE PRESIDENT FOR SCIENCE POLICY
- Total calculated
- $0
- Hours/week
- 7.5
-
Karen DevineKAREN DEVINE
SECRETARY AS OF 01/24
- Total calculated
- $0
- Hours/week
- 7.5
-
Kivmars H BowlingKIVMARS 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
-
$43,018
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
-
$37,466
2023 ADMINSTER AN UNDERGRADUATE RESEARCH PROGRAM
-
$37,260
2024 UNDERGRADAUTE SUMMER RESEARCH PROGRAM
-
$36,975
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
-
$29,145
2023 ADMINSTER AN UNDERGRADUATE RESEARCH PROGRAM
The 10 largest by cash amount. The API serves every itemized grant.
Grants received
-
2024 MULTIPLE
-
2022 TO PROMOTE EDUCATION AND COOPERATION IN THE AUTOMATIC CONTROL PROFESSION.
-
2022 FOR RECIPIENT'S EXEMPT PURPOSE
-
$14,460
2023 SUPPORT FOR CONVENTION AND MEETINGS
-
2022 For grant recipient's exempt purposes
-
2023 Prize
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.