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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 Ellen Whitesides

Ellen Whitesides

OfficerTrustee/director

Vice President at Illustrative Mathematics

Fiscal year ended June 30, 2017. Published on January 24, 2026.

$96,673
2017

Total compensation

Ellen Whitesides has been listed as an employee of Illustrative Mathematics in Form 990 filings since at least fiscal year 2016. Total compensation for Ellen Whitesides has decreased by 21.8% from 2016 to 2017.

Annual compensation details

$96,673
-21.8%
Vice President
2017
$94k org
33 hrs/wk
$4k other
--
$123,560
Vice President
2016
$123k org
33 hrs/wk
$2k other
--

Total compensation by year

Compare the compensation of Ellen Whitesides to:

2017

Other employees at Illustrative Mathematics

William McCallum
President and Chief Executive Officer
$286,000
$275,000 from orgNo related comp$11,000 other
Kristin Umland
Vice President
$192,786
$186,333 from orgNo related comp$6,453 other
Robert Stansfield
Treasurer/Cfo and COO
$168,480
$162,000 from orgNo related comp$6,480 other
Lisa O'Masta
Chief Executive Officer
$136,008
$132,475 from orgNo related comp$3,533 other
Linda Plattner
Secretary
$28,538
$28,538 from orgNo related compNo other comp
Shelly Jurmain
Interim Chief Financial Officer
$24,463
$23,750 from orgNo related comp$713 other
Trisha Thomas
Vice President
$21,317
$21,317 from orgNo related compNo other comp
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Revisions to this profile

January 24, 2026:
2018 Illustrative Mathematics 990 published
January 24, 2026:
2017 Illustrative Mathematics 990 published
January 24, 2026:
2016 Illustrative Mathematics 990 published

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