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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 Mark's School of Southborough Inc. John C Warren

John C Warren

Key employee

Head of School at St Mark's School of Southborough Inc.

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

$437,522
2024

Total compensation

John C Warren has been listed as an employee of St Mark's School of Southborough Inc. in Form 990 filings since at least fiscal year 2016. Total compensation for John C Warren has increased by 8% from 2016 to 2024.

Annual compensation details

$437,522
+0.3%
Head of School
2024
$421k org
40 hrs/wk
$17k other
--
$436,206
-3.8%
Head of School
2023
$402k org
40 hrs/wk
$35k other
--

Total compensation by year

Compare the compensation of John C Warren to:

2024

Other employees at St Mark's School of Southborough Inc.

Beatrix Sanders
Chief Advancement Officer
$322,634
$297,336 from orgNo related comp$25,298 other
Robert M Kuklewicz
Chief Financial and Operations Officer
$318,054
$292,756 from orgNo related comp$25,298 other
Kenneth Griffin
Chief Technology Officer
$209,256
$183,958 from orgNo related comp$25,298 other
Stephanie Katz
Major Gifts Director
$204,006
$178,708 from orgNo related comp$25,298 other
Anne Behnke
Admission Director
$169,381
$159,269 from orgNo related comp$10,112 other
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Revisions to this profile

January 25, 2026:
2024 St Mark's School of Southborough Inc. 990 published
January 25, 2026:
2023 St Mark's School of Southborough Inc. 990 published
January 25, 2026:
2022 St Mark's School of Southborough Inc. 990 published

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$453,490
+2.4%
Head of School
2022
$390k org
40 hrs/wk
$64k other
--
$442,967
-0.9%
Head of School
2021
$383k org
40 hrs/wk
$60k other
--
$446,833
-0.9%
Head of School
2020
$376k org
40 hrs/wk
$72k other
--
$450,728
+6.3%
Head of School
2019
$370k org
40 hrs/wk
$82k other
--
$424,125
+5.9%
Head of School
2018
$356k org
40 hrs/wk
$69k other
--
$400,474
-1.1%
Head of School
2017
$337k org
40 hrs/wk
$64k other
--
$405,080
Head of School
2016
$339k org
40 hrs/wk
$67k other
--

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