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About Us

At Illustrative Mathematics we are committed to creating a world where learners know, use, and enjoy mathematics.

We craft and deliver high-quality educational resources for teachers and students by developing great people who work in spirited teams to do extraordinary things.

A world where learners know, use, and enjoy mathematics.

Leadership Team

William G. McCallum
Founder and President
Lisa O'Masta
Chief Executive Officer
Kristen Welch
Chief Financial Officer and VP of Finance and Administration
Karl Nelson
Chief Operating Officer and Chief Technical Officer
Trisha Thomas
VP for Portfolio Management and Distribution and Marketing
Kristin Umland
VP for Product Development

Board of Directors

Barbara Chow
Jean Foster
Heather Hill
Gregg Levin
William G. McCallum
Cynthia Nava
Lisa O'Masta
George Zettler

Advisory Board

Diane J. Briars
Diana Caro
Phil Daro
John Ewing
Jeff Livingston
Nicole Neal
Jason Zimba
Dave Zura

Our Philanthropic Supporters

The Bill & Melinda Gates Foundation
The William and Flora Hewlett Foundation
Charles and Lynn Schusterman Family Foundation