Governance & Leadership
SIAM’s Board of Trustees, Council, and other volunteer member leaders work together with our professional staff to advance SIAM’s mission.

Charting Our Course
SIAM Board of Trustees
The SIAM Board of Trustees is responsible for the management and financial oversight of SIAM, taking into account the professional and scientific policies and objectives of SIAM. The Board has full legal and fiduciary responsibility for SIAM.
Board of Trustees
Beatrice M. Riviere, Chair
Rice University
Liliana Borcea
Columbia University
Raymond Chan
Lingnan University
Alina Chertock
North Carolina State University
Ricardo Cortez
Tulane University
Thomas A. Grandine
Boeing Company
Samuel Gubins
Annual Reviews
Jan Hesthaven
Karlsruhe Institute of Technology
Cynthia Phillips
Sandia National Laboratories
Bonita V. Saunders
National Institute of Standards & Technology
Chi-Wang Shu
Brown University
Carol Woodward
Lawrence Livermore National Laboratory
Ulrike Meier Yang
Lawrence Livermore National Laboratory
Directing Our Organization
SIAM Chief Executive Officer
The Chief Executive Officer is responsible for the administration of the affairs of SIAM, and providing leadership, management, and strategy to the organization. The CEO leads SIAM’s professional staff.
Chief Executive Officer
Suzanne L. Weekes
Society for Industrial and Applied Mathematics
Leading the Way
SIAM Officers
SIAM officers hold key leadership roles and are responsible for overseeing various aspects of SIAM's operations, goals, and objectives.
Officers
Carol Woodward, President
Lawrence Livermore National Laboratory
Sven Leyffer, Past President
Argonne National Laboratory
Xiaoye Sherry Li, Vice President-at-Large
Lawrence Berkeley National Laboratory
Karen Devine, Secretary
Sandia National Laboratories, Retired
Samuel Gubins, Treasurer
Annual Reviews
Eleanor Jenkins, Vice President for Education
Clemson University
Luis Melara, Vice President for Equity, Diversity, and Inclusion
Shippensburg University
Nessy Tania, Vice President for Industry
Pfizer Incorporated
James G. Nagy, Vice President for Programs
Emory University
Tamara G. Kolda, Vice President for Publications
MathSci.ai
Alejandro Aceves, Vice President for Science Policy
Southern Methodist University
Shaping Our Policy
SIAM Council
The SIAM Council formulates the scientific policies of the organization, monitors its technical activities, proposes new activities, and recommends action to the Board of Trustees as appropriate. The Council is chaired by the SIAM President.
Council
Alejandro Aceves
Southern Methodist University
Inga Berre
University of Bergen
Elizabeth Cherry
Georgia Institute of Technology
Henry Cohn
Microsoft Corporation
Hans De Sterck
University of Waterloo
Karen Devine
Sandia National Laboratories, Retired
Alicia Dickenstein
Universidad de Buenos Aires
Heike Fassbender
TU Braunschweig
Samuel Gubins
Annual Reviews
Johnny Guzmán
Brown University
Judith Hill
Lawrence Livermore National Laboratory
Eleanor Jenkins
Clemson University
Tamara G. Kolda
MathSci.ai
Sven Leyffer
Argonne National Laboratory
Xiaoye Sherry Li
Lawrence Berkeley National Laboratory
Luis Melara
Shippensburg University
James Nagy
Emory University
Evelyn Sander
George Mason University
Carola-Bibiane Schoenlieb
University of Cambridge
Valeria Simoncini
University of Bologna
Nessy Tania
Pfizer Incorporated
Andrea Walther
Humboldt-Universität zu Berlin
Carol Woodward
Lawrence Livermore National Laboratory
Building Our History
SIAM Executive Leadership
Executive Leadership
James M. Crowley
1994 - 2020

I. Edward Block
1976 - 1994

Dedicated to Our Mission
SIAM Presidents
The SIAM President broadly manages the professional and scientific affairs of SIAM, overseeing the SIAM Council and making appointments to committees.
Presidents
Carol Woodward
2025-2026

Sven Leyffer
2023-2024

Susanne C. Brenner
2021-2022

Lisa Fauci
2019-2020

Nicholas J. Higham
2017-2018

Pamela Cook
2015-2016

Irene Fonseca
2013-2014

L. N. Trefethen
2011-2012

Doug Arnold
2009-2010

Cleve Moler
2007-2008

Martin Golubitsky
2005-2006

James (Mac) Hyman
2003-2004

Thomas A. Manteuffel
2001-2002

Gilbert Strang
1999-2000

John Guckenheimer
1997-1998

Margaret H. Wright
1995-1996

Avner Friedman
1993-1994

Robert E. O’Malley, Jr.
1991-1992

Ivar Stakgold
1989-1990

C. William Gear
1987-1988

Gene H. Golub
1985-1986

Hirsh Cohen
1983-1984

Seymour Parter
1981-1982

Richard C. DiPrima
1979-1980

Werner Rheinboldt
1976-1978

Herbert Keller
1974-1976

C. C. Lin
1972-1974

Burton Colvin
1970-1972

J. Wallace Givens
1968-1970

Garrett Birkhoff
1966-1968

J. Barkley Rosser
1964-1966

Alston Householder
1963-1964

Joseph LaSalle
1962-1963

Robert Rinehart
1961-1962

F. Joachim Weyl
1960-1961

Brockway McMillan
1959-1960

Donald Thomsen, Jr.
1958-1959

Thomas Southard
1956-1958

John Mauchly
1955-1956

Harold Kuhn
1954-1955

Donald Houghton
1953-1954

William Bradley
1952-1953

Guiding Our Board
SIAM Board Chair
Board Chairs
Beatrice M. Riviere
1/1/2025 - Present

Alison Ramage
1/1/2023 - 12/31/2024

Margot Gerritsen
1/1/2020 - 12/31/2022

C. Tim Kelley
1/1/2012- 12/31/2019

Iain Duff
1/1/2006 - 12/31/2011

Michael Overton
1/1/2004 - 12/31/2005

Max Gunzburger
1/1/2003 - 12/31/2003

H. Thomas Banks
1/1/1999 - 12/31/2002

Joyce McLaughlin
1/1/1996 - 12/31/1998

John Hopcroft
1/1/1992 - 12/31/1995

James McKenna
1/1/1990 - 12/31/1991

Werner C. Rheinboldt
1/1/1985 - 12/31/1989

Ivar Stakgold
1/1/1980 - 12/31/1985

Maxine L. Rockoff
1/1/1978 - 12/31/1979

Brockway McMillan
1/1/1976 - 12/31/1977

Board Chairs from 1957-1975
I. Ed Block
Past Board Chair
Donald L. Thomsen
Past Board Chair
Herbert Gurk
Past Board Chair
R.F. Rinehart
Past Board Chair
Donald B. Houghton
Past Board Chair
Joseph LaSalle
Past Board Chair
John Sterrett
Past Board Chair
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