Data update history
May 15, 2023
Updated personnel
Identified 3 new personnel
May 10, 2023
Used new vendors
Identified 1 new vendor, including
August 23, 2021
Posted financials
Added Form 990 for fiscal year 2019
May 2, 2021
Posted financials
Added Form 990 for fiscal year 2018
April 8, 2021
Updated personnel
Identified 3 new personnel
Nonprofit Types
Social advocacy organizationsEnvironmental organizationsCharities
Issues
EducationEnvironment
Characteristics
Partially liquidatedTax deductible donationsNo full-time employees
General information
- Address
- 1031 33rd St Suite 133
- Denver, CO 80205
- Metro area
- Denver-Aurora-Lakewood, CO
- County
- Denver County, CO
- Website URL
- sdsg.org/
- Phone
- (914) 450-8020
IRS details
- EIN
- 26-1176011
- Fiscal year end
- December
- Taxreturn type
- Form 990-EZ
- Year formed
- 2007
- Eligible to receive tax-deductible contributions (Pub 78)
- Yes
Categorization
- NTEE code, primary
- C60: Environmental Education
- NAICS code, primary
- 813319: Social Advocacy Organizations
- Parent/child status
- Independent
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