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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 American Institute of Physics Inc Stephen MacKwell

Stephen MacKwell

Officer

DEO at American Institute of Physics Inc

Fiscal year ended December 31, 2021. Published on January 25, 2026.

$286,755
2021

Total compensation

Stephen MacKwell has been listed as an employee of American Institute of Physics Inc in Form 990 filings since fiscal year 2019. Total compensation for Stephen MacKwell has increased by 6.8% from 2019 to 2021.

Annual compensation details

$286,755
-22.4%
DEO
2021
$258k org
40 hrs/wk
$30k other
--
$369,601
+37.7%
DEO
2020
$313k org
40 hrs/wk
$58k other
--

Total compensation by year

Compare the compensation of Stephen MacKwell to:

2021

Other employees at American Institute of Physics Inc

Michael Moloney
Chief Executive Officer
$616,972
$569,618 from orgNo related comp$47,354 other
Alexandra Vance
AIPP, CEO
$541,171
$485,244 from orgNo related comp$55,927 other
Roy Levenson
AIPP, CFO
$456,521
$406,677 from orgNo related comp$49,844 other
Dean Sanderson
AIPP, Chief Strategy Officer
$404,016
$368,314 from orgNo related comp$35,702 other
Catherine Swartz
Chief Financial and Administrative Officer
$389,933
$342,667 from orgNo related comp$47,266 other
Kevin Steiner
AIPP, HEAD of Global Sales
$285,429
$235,699 from orgNo related comp$49,730 other
Tracy Denien
AIPP, HEAD of INFO Technology
$284,903
$222,851 from orgNo related comp$62,052 other
Sara Girard
AIPP, HEAD of MKT and COM
$273,073
$224,824 from orgNo related comp$48,249 other
Jason Wilde
AIPP, Chief PUB OFF
$260,407
$260,407 from orgNo related compNo other comp
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Revisions to this profile

January 25, 2026:
2021 American Institute of Physics Inc 990 published
January 24, 2026:
2020 American Institute of Physics Inc 990 published
January 24, 2026:
2019 American Institute of Physics Inc 990 published

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$268,442
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$246k org
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--

Other people named Stephen MacKwell

2021
Employee
Dr Stephen J MacKwell
Universities Space Research Association
$373,438