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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Employees Illustrative Mathematics William McCallum

William McCallum

Officer

Chief Executive Officer at Illustrative Mathematics

Fiscal year ended December 31, 2024. Published on January 25, 2026.

$410,174
2024

Total compensation

William McCallum has been listed as an employee of Illustrative Mathematics in Form 990 filings since at least fiscal year 2016. Total compensation for William McCallum has increased by 27.6% from 2016 to 2024.

Annual compensation details

$410,174
+3.4%
Chief Executive Officer
2024
$379k org
40 hrs/wk
$32k other
--
$396,768
+3.8%
Chief Executive Officer
2023
$364k org
40 hrs/wk
$34k other
--

Total compensation by year

Compare the compensation of William McCallum to:

2024

Other employees at Illustrative Mathematics

Kristin Umland
President
$358,250
$318,459 from orgNo related comp$39,791 other
Kristen Welch
Chief Financial Officer
$319,118
$290,557 from orgNo related comp$28,561 other
Dylan Dechant- Vp of
Engineering and Innovation
$268,975
$234,459 from orgNo related comp$34,516 other
Gail Hartman - Sr Vp
Product Development
$264,330
$244,957 from orgNo related comp$19,373 other
Brandi Tyler- Vp of
Brand and Communications
$230,590
$193,391 from orgNo related comp$37,199 other
Latoya Byrd- Vp of
Client and Partner Success
$218,627
$185,594 from orgNo related comp$33,033 other
Elizabeth Ramirez - Vp of
Implementation Programs
$213,764
$197,891 from orgNo related comp$15,873 other
Aurora Ziobrowski
Engineering Director
$206,833
$191,006 from orgNo related comp$15,827 other
Tamara Richards- Associate Vp
Business Solutions Adminstration
$204,454
$178,150 from orgNo related comp$26,304 other
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Revisions to this profile

January 25, 2026:
2024 Illustrative Mathematics 990 published
January 25, 2026:
2023 Illustrative Mathematics 990 published
January 25, 2026:
2022 Illustrative Mathematics 990 published

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