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Organizations Science & Technology Research TMT International Observatory LLC

TMT International Observatory LLC

Fiscal year ending 2023. Filed on November 13, 2024.

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 2023 IRS Form 990 filing, TMT International Observatory LLC, a 501(c)(3) charitable organization, reported compensation for 8 out of 56 total employees. Among the employees shown here, the average compensation is $420,057. The highest compensated employee at TMT International Observatory LLC is Robert Kirshner with fiscal year 2023 compensation of $858,538.

Revenue, expenses, and employee compensation

Revenue

$30,051,390

Expenses

$16,100,316

Employee compensation

$5,787,956
Revenue, expenses, and employee compensation over time

Reported Compensated Employees

Robert Kirshner
Executive Director
$858,538
$803,719 No related comp$54,819
Fengchuan Liu
Project Manager
$430,449
$350,329 No related comp$80,120
Eric Hansen
Deputy Project Manager
$386,671
$300,346 No related comp$86,325
Jose Teran
Facilities Department HEAD
$359,686
$282,548 No related comp$77,138
Christophe Dumas
Observatory Scientist
$351,696
$292,384 No related comp$59,312
Benjamin Gallagher
Telescope Optics Group Leader
$330,347
$269,178 No related comp$61,169
Corinne Boyer
Adaptive Optics Group Leader
$324,473
$252,976 No related comp$71,497
James Johnson
Telescope CTRL Group Leader
$318,598
$257,880 No related comp$60,718

Benchmark Employee Compensation

Non-Employee Board Members

An Ramaparkash
Governor
Bruce MacIntosh
Governor
Christopher Martin
Governor - Start DATE 8/23
Diana Jergovic
Secretary/Governor
Donald Brooks
Governor - END DATE 5/23
Eswar Reddy
Governor
Feng Yuan
Governor
Gilles Joncas
Governor - Start DATE 8/23
Henry Yang
Governor
Jonas Zmuidzinas
Governor - END DATE 8/23
Luc Simard
Governor
Michael Bolte
Governor

Contractors

Coherent Inc.
Engineering
$5,196,000
California Institute of Technology
Scientific
$5,133,289
Cilas
Engineering
$1,741,192
Bcf Solutions Inc.
Professional
$1,576,787
Amos Advanced Mech Optical Sys
Engineering
$536,987

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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