| # | Entity | Status | State |
|---|---|---|---|
| 1 | 18 131 551 061 MATHER CONTRACTING GROUP PTY LTD |
ABN Active | NSW 2088 |
| 2 | 50 193 671 773 Mathers House IT Learning Group |
ABN Active | TAS 7005 |
| 3 | 95 643 580 401 MATHER BUILDING GROUP PTY LTD |
ABN Active | VIC 3757 |
| 4 | 18 131 551 061 MATHER CONTRACTING GROUP PTY LTD |
ABN Active | NSW 2088 |
| 5 | 99 097 709 781 KEY SECURITY INVESTMENTS GROUP PTY LTD KEY SECURITY INVESTMENTS GROUP PTY LTD (ADRIAN STEWART DUNCAN & KAREN MAREE MATHERS ADMINISTRATORS APPOINTED). |
ABN Cancelled | NSW 2000 |