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Filing year 2024

TMT INTERNATIONAL OBSERVATORY LLC

Pasadena, California·EIN 30-0833462·NTEE U31 · Science & Technology·3
Total revenue
$13.2M
Total assets
$227.9M
Total expenses
$16.4M
Reported officers
25

Executive compensation, broken down

Form 990 · Schedule J · 8 reported individuals · Filing year 2024

Executive Director
$894k
$951k
Base
$805k
Bonus
Other
$32k
Benefits
$30k
Project Manager
officer (unspecified)
$455k
$484k
Base
$350k
Bonus
Other
$23k
Benefits
$30k
Deputy Project Manager
key employee
$401k
$427k
Base
$313k
Bonus
Other
Benefits
$39k
Facilities Department Head
highest compensated employee
$373k
$397k
Base
$291k
Bonus
Other
Benefits
$37k
Telescope Optics Group Leader
highest compensated employee
$344k
$366k
Base
$280k
Bonus
Other
Benefits
$30k
Adaptive Optics Group Leader
highest compensated employee
$337k
$359k
Base
$265k
Bonus
Other
Benefits
$31k
Telescope Struct. Group Leader
highest compensated employee
$306k
$326k
Base
$246k
Bonus
Other
Benefits
$23k
Project Systems Engineer
highest compensated employee
$300k
$320k
Base
$247k
Bonus
$5k
Other
Benefits
$19k

Teal figures restate each filed amount in 2026 dollars.

Estimated with BLS CPI-U for the West region, restating filed pay into May 2026 dollars. A restatement of past pay, not current or projected pay.

Plus 17 unpaid individuals.

Browse compensation in Science & Technology

Up 4%
from 2023

From $859k in 2023 to $894k in 2024.

$859k
2023
$894k
2024
In today's dollarsEst.
Up 1% in real terms$940k to $951k

Estimated with BLS CPI-U for the West region, restating filed pay into May 2026 dollars. A restatement of past pay, not current or projected pay.

Highest reported compensation in each year. Volunteer board members and partial-year payouts are filtered out.
Financial trend

Revenue and expenses over time

TMT INTERNATIONAL OBSERVATORY LLC reported revenue and expenses across 2 filing years.

RevenueExpenses
$30.1M
$16.1M
2023
$13.2M
$16.4M
2024
Total revenue and total expenses from IRS Form 990 filings.
Sector benchmark

What Science & Technology executives earn in California

Comparable science & technology organizations in California pay their highest-earning executive a median of $110,249.

25th percentile
$25k
Median
$110,249
75th percentile
$216k
90th percentile
$360k

These are science & technology sector-wide figures, not this organization's reported pay. Based on 50 organizations across 50 filings (2022 – 2023).

See full Science & Technology pay data for California
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