| 2019 | Plumbers Local Union No 12 | 990 | Pac/Pr | 2 | $1,991 | $0 | View return |
| 2019 | Plumbers Local No 12 Building Corporation | 990 | Pac/Pr | 2 | $0 | $1,991 | View return |
| 2018 | Plumbers Local Union No 12 | 990 | Joint Apprentice Committee | 2 | $3,694 | $0 | View return |
| 2018 | Plumbers Local No 12 Building Corporation | 990 | Joint Apprentice Committee | 2 | $0 | $3,694 | View return |
| 2017 | Plumbers Local Union No 12 | 990 | Joint Apprentice Committee | 2 | $5,741 | $0 | View return |
| 2017 | Plumbers Local No 12 Building Corporation | 990 | Joint Apprentice Committee | 2 | $0 | $5,741 | View return |
| 2016 | Plumbers Local Union No 12 | 990 | Joint Apprentice Committee | 2 | $5,593 | $0 | View return |
| 2016 | Plumbers Local No 12 Building Corporation | 990 | Joint Apprentice Committee | 2 | $0 | $5,593 | View return |
| 2015 | Plumbers Local No 12 Building Corporation | 990 | Joint Apprentice Committee | 2 | $0 | $0 | View return |
| 2015 | Plumbers Local Union No 12 | 990 | Joint Apprentice Committee | 2 | $0 | $0 | View return |
| 2014 | Plumbers Local Union No 12 | 990 | Joint Apprentice Committee | 2 | $5,286 | $0 | View return |
| 2014 | Plumbers Local No 12 Building Corporation | 990 | Joint Apprentice Committee | 2 | $0 | $5,286 | View return |
| 2013 | Plumbers Local Union No 12 | 990 | Joint Apprentice Committee | 2 | $4,547 | $0 | View return |
| 2013 | Plumbers Local No 12 Building Corporation | 990 | Joint Apprentice Committee | 2 | $0 | $4,547 | View return |