| # | Entity | Status | State |
|---|---|---|---|
| 1 | 15 068 143 902 LEIGHTON O'BRIEN PTY LTD |
ABN Active | VIC 3122 |
| 2 | 16 973 124 118 MARK LEIGHTON O'BRIEN |
ABN Active | QLD 4129 |
| 3 | 34 167 317 255 LEIGHTON JOHN O'BRIEN |
ABN Cancelled | NSW 2320 |
| 4 | 43 554 371 314 LEIGHTON REECE O'BRIEN |
ABN Active | VIC 3579 |
| 5 | 48 988 171 637 LEIGHTON JACE O'BRIEN |
ABN Cancelled | QLD 4209 |
| 6 | 49 080 728 641 LEIGHTON O'BRIEN FIELD SERVICES PTY LTD |
ABN Active | VIC 3122 |
| 7 | 51 640 505 059 LEIGHTON O'BRIEN ENERGY SERVICES PTY LTD |
ABN Active | VIC 3122 |
| 8 | 58 149 919 399 LEIGHTON O'BRIEN GLOBAL PTY LTD |
ABN Active | VIC 3122 |
| 9 | 64 162 287 603 LEIGHTON O'BRIEN TECHNOLOGY PTY LIMITED |
ABN Active | VIC 3122 |
| 10 | 68 107 449 427 LEIGHTON O'BRIEN HOLDINGS PTY LTD |
ABN Active | VIC 3122 |
| 11 | 71 149 915 711 Leighton O'Brien International Pty Ltd |
ABN Active | VIC 3122 |
| 12 | 90 101 966 463 LEIGHTON JOHN OBRIEN |
ABN Cancelled | NSW 2759 |