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Organizations Science & Technology Research TMT International Observatory LLC

TMT International Observatory LLC

Fiscal year ending 2020. Filed on November 12, 2021.

100 W Walnut Street Suite 300
Pasadena, California 91124

TMT International Observatory LLC (EIN: 30-0833462) has filed an IRS Form 990 since at least fiscal year 2016. In its fiscal year 2020 IRS Form 990 filing, TMT International Observatory LLC, a 501(c)(3) charitable organization, reported compensation for 8 out of 52 total employees. Among the employees shown here, the average compensation is $319,299. The highest compensated employee at TMT International Observatory LLC is Gary Sanders with fiscal year 2020 compensation of $376,746.

Revenue, expenses, and employee compensation

Revenue

$35,210,500

Expenses

$16,942,046

Employee compensation

$4,908,452
Revenue, expenses, and employee compensation over time

Reported Compensated Employees

Gary Sanders
Project Manager
$376,746
$332,759 No related comp$43,987
Fengchuan Liu
Deputy Project Manager
$338,356
$265,401 No related comp$72,955
Christophe Dumas
Observatory Scientist
$324,637
$273,745 No related comp$50,892
Ravinder Bhatia
Associate Project Manager
$323,244
$256,026 No related comp$67,218
Mark Sirota
Telescope Ctrls Group Leader
$313,822
$246,724 No related comp$67,098
Eric Hansen
OPTO Mechanical Engineer
$311,725
$237,020 No related comp$74,705
Benjamin Gallagher
M1 Segment Lead Engineer
$289,156
$233,339 No related comp$55,817
Edward Stone
Executive Director
$276,708
$244,346 No related comp$32,362

Benchmark Employee Compensation

Non-Employee Board Members

An Ramaprakash
Governor
B Thomas Soifer
Governor
Diana Jergovic
Secretary/Governor
Donald Brooks
Governor
Eswar Reddy
Governor
Feng Yuan
Governor -Start Date 8/31/2020
Gang Zhao
Governor- End Date 08/31/2020
Henry Yang
Governor
Jonas Zmuidzinas
Governor
Kim Venn
Governor
Luc Simard
Governor
Michael Bolte
Governor

Contractors

California Institute of Technology
Scientific
$4,856,369
Coherent Inc
Engineering
$3,810,637
Bcf Solutions Inc.
Professional
$2,583,445
M3 Engineering and Technology
Engineering
$1,933,164
Cilas
Engineering
$1,040,842

Mission Statement

SEE SCHEDULE O

Revisions to this organization profile

November 17, 2025:
2024 TMT International Observatory LLC 990 filed
November 13, 2024:
2023 TMT International Observatory LLC 990 filed
November 10, 2023:
2022 TMT International Observatory LLC 990 filed

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