| American Council of Engineering Companies of Ohio | — | Jan-Apr19 |
| Elizabeth Easterday-Futryk | American Council of Engineering Companies of Ohio | — | Jan-Apr19 |
| Kevin L Futryk | American Council of Engineering Companies of Ohio | — | Jan-Apr19 |
| Associated General Contractors of Ohio | — | Jan-Apr19 |
| Andrea Maclam Ashley | Associated General Contractors of Ohio | — | Jan-Apr19 |
| Attorney General's Office | — | Sep-Dec19 |
| Burgess & Niple, Inc | — | Jan-Apr19 |
| Brooke A Cheney | Burgess & Niple, Inc | — | Jan-Apr19 |
| Kelly C O'Reilly | Burgess & Niple, Inc | — | Jan-Apr19 |
| Matthew S Whitehead | Burgess & Niple, Inc | — | Jan-Apr19 |
| Victor F Hipsley | Burgess & Niple, Inc | — | Jan-Apr19 |
| Butler County Transportation Improvement District | — | May-Aug19 |
| Andy Shifflette | Butler County Transportation Improvement District | — | May-Aug19 |
| City of Columbus | — | May-Aug20 |
| Andrew Minton | City of Columbus | — | May-Aug20 |
| Evelyn Kennedy | City of Columbus | — | May-Aug20 |
| Greg Bennett | City of Columbus | — | May-Aug20 |
| Stephen Nielson | City of Columbus | — | May-Aug20 |
| William L Byers, IV | City of Columbus | — | May-Aug20 |
| Clermont County Transportation Improvement District | — | May-Aug19 |
| Andy Shifflette | Clermont County Transportation Improvement District | — | May-Aug19 |
| Kristen Easterday | Columbus Regional Airport Authority | — | May-Aug19 |
| County Commissioners' Association of Ohio | — | Jan-Apr19 |
| Cheryl L Subler | County Commissioners' Association of Ohio | — | Jan-Apr19 |
| Jon P Honeck | County Commissioners' Association of Ohio | — | Sep-Dec20 |
| Rachel Massoud Reedy | County Commissioners' Association of Ohio | — | Sep-Dec20 |
| Suzanne K Dulaney | County Commissioners' Association of Ohio | — | Jan-Apr19 |
| County Engineers Association of Ohio | — | Sep-Dec19 |
| Dean Ringle | County Engineers Association of Ohio | — | Sep-Dec19 |
| Michael T Evans | County Engineers Association of Ohio | — | Sep-Dec19 |
| Department of Administrative Services | — | Jan-Apr20 |
| Frederick M. Whatley | Department of Administrative Services | — | Jan-Apr20 |
| Mariah Field | Department of Administrative Services | — | Jan-Apr20 |
| Matthew Damschroder | Department of Administrative Services | — | Jan-Apr20 |
| P. Craig Forbes | Department of Administrative Services | — | Jan-Apr20 |
| Hamilton County Administration | — | Sep-Dec20 |
| Alana Tucker | Hamilton County Administration | — | Sep-Dec20 |
| Charles H Gerhardt, III | Hamilton County Administration | — | Sep-Dec20 |
| James T Benedict | Hamilton County Administration | — | Sep-Dec20 |
| Hamilton County Transportation Improvement District | — | May-Aug19 |
| Andy Shifflette | Hamilton County Transportation Improvement District | — | May-Aug19 |
| Licking County TID | — | May-Aug19 |
| Andy Shifflette | Licking County TID | — | May-Aug19 |
| Mechanical Contractors Association of Ohio | — | Sep-Dec20 |
| Joshua Sanders | Mechanical Contractors Association of Ohio | — | Sep-Dec20 |
| Leah Pappas Porner | Mechanical Contractors Association of Ohio | — | Sep-Dec20 |
| Andy Shifflette | Mid-Ohio Regional Planning Commission (MORPC) | — | May-Aug19 |
| Northeast Ohio Regional Sewer District | — | Sep-Dec19 |
| Andrew Huffman | Northeast Ohio Regional Sewer District | — | Sep-Dec19 |
| Brooke A Cheney | Northeast Ohio Regional Sewer District | — | Sep-Dec19 |
| Kelly C O'Reilly | Northeast Ohio Regional Sewer District | — | Sep-Dec19 |
| Matthew S Whitehead | Northeast Ohio Regional Sewer District | — | Sep-Dec19 |
| Victor F Hipsley | Northeast Ohio Regional Sewer District | — | Sep-Dec19 |
| Ohio Association for Justice | — | Jan-Apr19 |
| Brad Ingraham | Ohio Association for Justice | — | Jan-Apr20 |
| John E Van Doorn | Ohio Association for Justice | — | Jan-Apr19 |
| Ohio Contractors Association | — | Jan-Apr19 |
| Michelle R Holdgreve | Ohio Contractors Association | — | Jan-Apr19 |
| Ohio Department of Natural Resources | — | Sep-Dec20 |
| Danielle Vandegriff | Ohio Department of Natural Resources | — | Sep-Dec20 |
| Ethan Zucal | Ohio Department of Natural Resources | — | Sep-Dec20 |
| Ryan Frazee | Ohio Department of Natural Resources | — | Sep-Dec20 |
| Ohio Department of Transportation | — | Jan-Apr20 |
| Jack Marchbanks | Ohio Department of Transportation | — | Sep-Dec19 |
| William Hinman | Ohio Department of Transportation | — | Sep-Dec19 |
| William O'Gorman | Ohio Department of Transportation | — | Sep-Dec19 |
| Ohio Facilities Construction Commission | — | Jan-Apr19 |
| Andrew Bowsher | Ohio Facilities Construction Commission | — | May-Aug19 |
| Bryan Bennett | Ohio Facilities Construction Commission | — | Jan-Apr20 |
| Jeffrey Westhoven | Ohio Facilities Construction Commission | — | May-Aug19 |
| Jon Walden | Ohio Facilities Construction Commission | — | Jan-Apr19 |
| Ohio Insurance Institute | — | Sep-Dec20 |
| Michael D. Farley | Ohio Insurance Institute | — | Sep-Dec20 |
| Keary McCarthy | Ohio Mayors Alliance | — | Jan-Apr20 |
| Ohio Municipal League | — | Jan-Apr19 |
| Brad Barger | Ohio Municipal League | — | May-Aug19 |
| Brian P Barger | Ohio Municipal League | — | May-Aug19 |
| Edward L Albright | Ohio Municipal League | — | Jan-Apr19 |
| Kent M Scarrett | Ohio Municipal League | — | Jan-Apr19 |
| Ohio Society of Professional Engineers | — | Jan-Apr19 |
| Andrew Huffman | Ohio Society of Professional Engineers | — | Jan-Apr19 |
| Brooke A Cheney | Ohio Society of Professional Engineers | — | Jan-Apr19 |
| Holly Flanigan | Ohio Society of Professional Engineers | — | Jan-Apr19 |
| Kelly C O'Reilly | Ohio Society of Professional Engineers | — | Jan-Apr19 |
| Matthew S Whitehead | Ohio Society of Professional Engineers | — | Jan-Apr19 |
| Victor F Hipsley | Ohio Society of Professional Engineers | — | Jan-Apr19 |
| Andrew Minton | Resource International, Inc | — | Jan-Apr19 |
| William L Byers, IV | Resource International, Inc | — | Jan-Apr19 |
| The Ohio State University | — | Jan-Apr19 |
| Brian Perera | The Ohio State University | — | Jan-Apr19 |
| Warren County Transportation Improvement District | — | May-Aug19 |
| Andy Shifflette | Warren County Transportation Improvement District | — | May-Aug19 |