Data update history
February 7, 2024
Updated personnel
Identified 1 new personnel
November 25, 2023
Posted financials
Added Form 990 for fiscal year 2021
July 21, 2023
Posted financials
Added Form 990 for fiscal year 2022
July 3, 2023
Updated personnel
Identified 6 new personnel
April 12, 2022
Updated personnel
Identified 2 new personnel
Nonprofit Types
UnionsChapter / child organizations
Issues
Human servicesJobs and employment
Characteristics
MembershipsState / local level
General information
- Address
- 570 Barneveld Ave
- San Francisco, CA 94124
- Metro area
- San Francisco-Oakland-Berkeley, CA
- County
- San Francisco County, CA
- Website URL
- ironworkers377.com/enÂ
- Phone
- (415) 285-3880
IRS details
- EIN
- 94-0577195
- Fiscal year end
- June
- Taxreturn type
- Form 990
- Year formed
- 1921
- Eligible to receive tax-deductible contributions (Pub 78)
- No
Categorization
- NTEE code, primary
- J40: Labor unions, organizations
- NAICS code, primary
- 813930: Labor Unions
- Parent/child status
- Subordinate organization
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