| Amrize North America Inc. | — | May-Aug21 |
| Hunter Wright | Amrize North America Inc. | — | May-Aug21 |
| Thomas P Pappas | Amrize North America Inc. | — | May-Aug21 |
| Andrew Gall | Flexible Pavements, Inc | — | Sep-Dec21 |
| McKenzie K Davis | Flexible Pavements, Inc | — | May-Aug21 |
| Michael Toman | Flexible Pavements, Inc | — | May-Aug21 |
| Robert Van Kirk | Flexible Pavements, Inc | — | Sep-Dec21 |
| International Union of Operating Engineers Local 18 | — | Jan-Apr21 |
| Mark A Totman | International Union of Operating Engineers Local 18 | — | Jan-Apr21 |
| Mechanical Contractors Association of Ohio | — | Jan-Apr21 |
| Joshua Sanders | Mechanical Contractors Association of Ohio | — | Jan-Apr21 |
| Leah Pappas Porner | Mechanical Contractors Association of Ohio | — | Jan-Apr21 |
| Ohio Contractors Association | — | May-Aug21 |
| Michelle R Holdgreve | Ohio Contractors Association | — | May-Aug21 |
| Ohio Manufacturers' Association | — | Jan-Apr21 |
| Robert Brundrett | Ohio Manufacturers' Association | — | Jan-Apr21 |
| Edward L Albright | Ohio Municipal League | — | Jan-Apr22 |
| Ohio Ready Mixed Concrete Assn | — | May-Aug21 |
| Jason A Paduchik | Ohio Ready Mixed Concrete Assn | — | May-Aug21 |
| Joel Riter | Ohio Ready Mixed Concrete Assn | — | May-Aug21 |
| Andrew Minton | Resource International, Inc | — | Jan-Apr21 |
| Stephen Nielson | Resource International, Inc | — | Jan-Apr21 |
| William L Byers, IV | Resource International, Inc | — | Jan-Apr21 |
| Brooke A Cheney | StoryPoint | — | Sep-Dec21 |
| The Shelly Company | — | May-Aug21 |
| Denise M Larr | The Shelly Company | — | May-Aug21 |
| Joseph Price | The Shelly Company | — | May-Aug21 |
| William Fitzgibbon | The Shelly Company | — | May-Aug21 |