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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 The Union of Concerned Scientists Inc. Sonja Spears

Sonja Spears

Key employee

Chief Justice and Equity Officer at The Union of Concerned Scientists Inc.

Fiscal year ended September 30, 2024. Published on January 25, 2026.

$274,260
2024

Total compensation

Sonja Spears has been listed as an employee of The Union of Concerned Scientists Inc. in Form 990 filings since fiscal year 2023. Total compensation for Sonja Spears has increased by 99% from 2023 to 2024.

Annual compensation details

$274,260
+99%
Chief Justice and Equity Officer
2024
$226k org
40 hrs/wk
$49k other
--
$137,802
Chief Justice and Equity Officer
2023
$130k org
40 hrs/wk
$9k other
--

Total compensation by year

Compare the compensation of Sonja Spears to:

2024

Other employees at The Union of Concerned Scientists Inc.

Johanna Chao Kreilick
President and Chief Executive Officer
$404,305
$353,104 from orgNo related comp$51,201 other
Pallavi Phartiyal
Vice President, Programs, Policy and Advocacy
$301,273
$266,083 from orgNo related comp$35,190 other
Suzanne Shaw
Chief Communications Officer
$287,080
$229,124 from orgNo related comp$57,956 other
Jarasa Mangkorn Kanok
Chief of Strategic Planning
$284,725
$231,675 from orgNo related comp$53,050 other
Oluseto Adeyefa
Chief People Officer
$277,229
$235,450 from orgNo related comp$41,779 other
Tara Drozdeniko
Program Director, Global Security
$244,514
$184,126 from orgNo related comp$60,388 other
Adam Markham
Deputy Director, Climate
$243,233
$185,460 from orgNo related comp$57,773 other
Juliet Christian Smith
Program Director, Western States
$240,216
$215,108 from orgNo related comp$25,108 other
Tracy Donahoe
Director, Planned Giving
$233,037
$180,163 from orgNo related comp$52,874 other
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Revisions to this profile

January 25, 2026:
2024 The Union of Concerned Scientists Inc. 990 published
January 25, 2026:
2023 The Union of Concerned Scientists Inc. 990 published

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