Fiscal year ending 2024. Filed on November 17, 2025.
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 2024 IRS Form 990 filing, TMT International Observatory LLC, a 501(c)(3) charitable organization, reported compensation for 8 out of 55 total employees. Among the employees shown here, the average compensation is $426,352. The highest compensated employee at TMT International Observatory LLC is Robert Kirshner with fiscal year 2024 compensation of $893,526.
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