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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 TMT Observatory Corporation Mark Sirota

Mark Sirota

Highest compensated employee

Telescope Ctrls Group Leader at TMT Observatory Corporation

Fiscal year ended September 30, 2016. Published on January 24, 2026.

$279,925
2016

Total compensation

Mark Sirota has been listed as an employee of TMT Observatory Corporation in Form 990 filings since at least fiscal year 2016.

Annual compensation details

$279,925
Telescope Ctrls Group Leader
2016
$223k org
40 hrs/wk
$58k other
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Total compensation by year

Compare the compensation of Mark Sirota to:

2016

Other employees at TMT Observatory Corporation

R David Goodman
Chief Operating Officer
$327,489
$257,015 from orgNo related comp$70,474 other
Christophe Dumas
Telescope Optics Group Leader
$325,410
$302,517 from orgNo related comp$22,893 other
Larry Stepp
Telescope Department HEAD
$297,015
$247,369 from orgNo related comp$49,646 other
Ravinder Bhatia
Associate Project Manager
$296,049
$243,653 from orgNo related comp$52,396 other
Brent Ellerbroek
Telescope Department HEAD
$280,902
$203,471 from orgNo related comp$77,431 other
Larry Adkison
Secretary
$0
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Revisions to this profile

January 24, 2026:
2016 TMT Observatory Corporation 990 published

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