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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 Slipstream Group Inc. Timothy Mathison

Timothy Mathison

Officer

General Counsel MAG Director at Slipstream Group Inc.

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

$122,254
2024

Total compensation

Timothy Mathison has been listed as an employee of Slipstream Group Inc. in Form 990 filings since fiscal year 2018. Total compensation for Timothy Mathison has increased by 51.5% from 2018 to 2024.

Annual compensation details

$122,254
+13.1%
General Counsel MAG Director
2024
$118k org
40 hrs/wk
$6k other
--
$108,122
+0.6%
General Counsel and Secretary
2023
$104k org
40 hrs/wk
$5k other
--

Total compensation by year

Compare the compensation of Timothy Mathison to:

2024

Other employees at Slipstream Group Inc.

Sandra Hall Henry
President and Chief Executive Officer
$256,259
$230,247 from orgNo related comp$26,012 other
Katrina Keller
Vice President Operations/Cfo
$179,378
$171,629 from orgNo related comp$7,749 other
Scott Hackel
Vice President, Research
$165,978
$142,517 from orgNo related comp$23,461 other
Patti Phillips
Advancement Officer
$161,145
$144,820 from orgNo related comp$16,325 other
Heidi Gorrill
Chief Program Officer
$158,378
$151,788 from orgNo related comp$6,590 other
Benjamin Heymer
Engineering Director
$145,538
$138,648 from orgNo related comp$6,890 other
Margaret Cowan
Director of Workforce DEV
$145,264
$139,266 from orgNo related comp$5,998 other
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Revisions to this profile

January 25, 2026:
2024 Slipstream Group Inc. 990 published
January 25, 2026:
2023 Slipstream Group Inc. 990 published
January 25, 2026:
2022 Slipstream Group Inc. 990 published

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