Data update history
August 2, 2025
Posted financials
Added Form 990 for fiscal year 2024
July 30, 2025
Updated personnel
Identified 1 new personnel
July 4, 2025
Used new vendors
Identified 1 new vendor, including
August 10, 2024
Posted financials
Added Form 990 for fiscal year 2023
July 25, 2024
Updated personnel
Identified 1 new personnel
Nonprofit Types
Social advocacy organizationsInternational-focused organizationsCharities
Issues
Foreign affairsPublic policy
Characteristics
Tax deductible donationsAccepts online donations
General information
- Address
- 2021 L St NW PMB 320 Ste 101
- Washington, DC 20036
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- County
- District of Columbia, DC
- Website URL
- trilateral.org/Â
- Phone
- (617) 998-6608
IRS details
- EIN
- 23-7309933
- Fiscal year end
- June
- Taxreturn type
- Form 990
- Year formed
- 1973
- Eligible to receive tax-deductible contributions (Pub 78)
- Yes
Categorization
- NTEE code, primary
- Q20: International Exchanges, Cultural Understanding
- NAICS code, primary
- 813319: Social Advocacy Organizations
- Parent/child status
- Independent
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