| Place of | Percentage of Interest or | |||
| Name | Organization | Voting Securities Owned | ||
| Tutor Perini Corporation | Massachusetts | |||
| Perini Building Company, Inc. | Arizona | 100% | ||
| Tutor-Saliba, LLC | California | 100% | ||
| Tutor-Saliba Corporation | California | 100% | ||
| Desert Plumbing & Heating Co., Inc. | Nevada | 100% | ||
| Powerco Electric Corp. | California | 100% | ||
| Black Construction | Guam | 100% | ||
| Perini Management Services, Inc. | Massachusetts | 100% | ||
| James A. Cummings, Inc. | Florida | 100% | ||
| Cherry Hill Construction, Inc. | Maryland | 100% | ||
| Rudolph and Sletten, Inc. | California | 100% | ||
| Keating Building Company | Pennsylvania | 100% | ||
| Perini Environmental Services, Inc. | Delaware | 100% | ||
| International Construction Management Services, Inc. | Delaware | 100% | ||
| Percon Constructors, Inc. | Delaware | 100% | ||
| Bow Leasing Company, Inc. | New Hampshire | 100% | ||
| Perini Land & Development Company, Inc. | Massachusetts | 100% | ||
| Paramount Development Associates, Inc. | Massachusetts | 100% | ||
| Mt. Wayte Realty, LLC | Delaware | 100% |
