| Name | Exchange | Symbol | Last trade | Change | Mkt cap | |
| S&S Public Relations, Inc. | Private | |||||
| Fleishman-Hillard Inc. | Private | |||||
| CMGRP, Inc. | Private | |||||
| Waggener Edstrom Worldwide, Inc. | Private | |||||
| M Booth & Associates Inc. | Private | |||||
| Greenough Communications | Private | |||||
| Public Strategies, Inc. | Private | |||||
| Formula PR, Inc. | Private | |||||
| Regan Communications Group, Inc. | Private | |||||
| Burson-Marsteller, Inc. | Private | |||||
| 5W Public Relations, LLC | Private |