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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 Hackley School John P Gannon

John P Gannon

Highest compensated employee

Advancement Director at Hackley School

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

$271,988
2024

Total compensation

John P Gannon has been listed as an employee of Hackley School in Form 990 filings since at least fiscal year 2016. Total compensation for John P Gannon has increased by 25.7% from 2016 to 2024.

Annual compensation details

$271,988
+5.6%
Advancement Director
2024
$226k org
40 hrs/wk
$47k other
--
$257,616
-4.5%
Development Director
2023
$217k org
40 hrs/wk
$42k other
--

Total compensation by year

Compare the compensation of John P Gannon to:

2024

Other employees at Hackley School

Michael Wirtz
HEAD of School (Thru 6/30/23)
$462,919
$432,602 from orgNo related comp$30,317 other
Erin Bernstein
Chief Financial Officer
$327,100
$282,213 from orgNo related comp$44,887 other
Charles Franklin
HEAD of School (From 7/1/2023)
$313,189
$280,175 from orgNo related comp$33,014 other
Andrew M King
Upper School Director
$250,718
$193,878 from orgNo related comp$56,840 other
Lisa Obersterin
Lower School Director
$220,899
$179,241 from orgNo related comp$41,658 other
Teresa Weber
Director of Advancement (Thru 06/30/23)
$213,037
$199,218 from orgNo related comp$13,819 other
Basil Kolani
Director of Academic Affairs
$188,611
$175,811 from orgNo related comp$12,800 other
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Revisions to this profile

January 25, 2026:
2024 Hackley School 990 published
January 25, 2026:
2023 Hackley School 990 published
January 25, 2026:
2022 Hackley School 990 published

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2024
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