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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 St Louis Science Center Foundation Mark Johnson

Mark Johnson

Highest compensated employee

Managing Director of Finance at St Louis Science Center Foundation

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

$166,000
2024

Total compensation

Mark Johnson has been listed as an employee of St Louis Science Center Foundation in Form 990 filings since fiscal year 2022. Total compensation for Mark Johnson has increased by 10.6% from 2022 to 2024.

Annual compensation details

$166,000
+4.4%
Managing Director of Finance
2024
$147k related
40 hrs/wk
$20k other
--
$159,063
+5.9%
Managing Director of Finance
2023
$137k related
40 hrs/wk
$23k other
--

Total compensation by year

Compare the compensation of Mark Johnson to:

2024

Other employees at St Louis Science Center Foundation

Todd Bastean
President and Chief Executive Officer
$476,410
$0 from org$440,277 from related$36,133 other
Mary Beth Kastner
Chief Financial Officer and Assistant Treasurer
$260,981
$0 from org$217,192 from related$43,789 other
Bobby Sanderson
Chief INST Advancement Officer
$253,619
$0 from org$228,793 from related$24,826 other
Deborah Washington
Managing Director of Staff Relations
$160,492
$0 from org$138,567 from related$21,925 other
Jackie Mollet
Managing Director of Guest Services
$159,577
$0 from org$138,027 from related$21,550 other
Rebecca Thompson
Chief Science and Education Officer
$157,206
$0 from org$150,211 from related$6,995 other
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Revisions to this profile

January 25, 2026:
2024 St Louis Science Center Foundation 990 published
January 25, 2026:
2023 St Louis Science Center Foundation 990 published
January 25, 2026:
2022 St Louis Science Center Foundation 990 published

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$150,156
Managing Director of Finance
2022
$134k related
40 hrs/wk
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--

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