RGP Investors
| American Electric Power | Mechanical Contractors Association of NW Ohio |
| Associated General Contractors of Northwest Ohio | Miller Diversified, Inc. |
| Blanchard Valley Port Authority | Miller Valentine Construction |
| Bank of America Merrill Lynch | Mosser |
| Block Communications, Inc. | NAI Harmon Group |
| Bowling Green State University | National Electrical Contractors Association |
| Bruns Construction Enterprises, Inc. | Nemsys LLC |
| Cenovus Toledo Refining | NOOTER Toledo |
| Central Midwest Carpenters | North Coast Gas Transmission Co., LLC |
| Charter Communications | Ohio Electric Cooperative/Tricounty Electric Cooperative, Inc. |
| Civil & Environmental Consultants, Inc. | Ohio Logistics, Ltd. |
| Clark Schaefer Hackett | Oliver/Hatcher Construction |
| Cleveland-Cliffs Inc. | Owens Community College |
| CliftonLarsonAllen LLP | Owens Corning |
| Clouse Construction Corp | Palmer Energy Company, Inc. |
| Colliers Engineering & Design | Pappas KC Ohio - Kelley Cawthorne |
| Columbia Gas | PBF Toledo Refining Company LLC |
| Comfort Line Ltd. | Penta Career Center |
| Crown Battery Manufacturing Company | Pilkington North America, Inc |
| Directions Credit Union, Inc. | Plante Moran |
| DMC Technology Group, Inc. | PNC Bank, National Association |
| DT Midstream | Polaris Logistics Group |
| E.S. Wagner Co. | ProMedica Health System, Inc. |
| Eastman & Smith Ltd | Rehmann |
| Fifth Third Bank of Northwestern Ohio, NA | Reichle/Klein Group |
| First Solar, Inc. | Rudolph Libbe Group |
| FirstEnergy Corp. | Savage and Associates, Inc. |
| Foundation Steel, LLC | Shumaker, Loop & Kendrick, LLP |
| GBQ Partners | Signature Bank, National Association |
| Gilbane Building Company | SSOE Group |
| Gulfstream Development | Stellantis N.V. |
| Hart, Inc. | Superior Credit Union |
| Hylant Group, Inc. | The Andersons, Inc. |
| Industrial Power Systems, Inc. | The Huntington National Bank |
| Integrated Talent Strategies | The Lathrop Company Inc |
| JobsOhio | Toledo-Lucas County Port Authority |
| Keller Logistics Group, Inc. | University of Toledo |
| Key Construction | Verdantas |
| KeyBank | Vorys, Sater, Seymour and Pease LLP |
| Kokosing | Waterford Bank NA |
| Laibe Electric Co. | WesBanco |
| Libbey, Inc. | William Vaughan Company |
| Life Connection of Ohio | Wood County Port Authority |
| Mannik & Smith Group | WorkSpring |
| Marshall & Melhorn, LLC | William Vaughan Company |
- AEP
- Andersons
- Associated General Contractors
- Block Communications
- Bowling Green State University
- BP America
- Charter Communications
- Clark Schaefer Hackett
- Cliffs
- Columbia Gas
- Crown Battery
- Dana
- Defiance College
- The Delventhal Company
- Digital 55
- Directions Credit Union
- DT Midstream
- Eastman & Smith
- Fifth Third Bank
- First Solar
- GBQ
- Gilmore, Jasion & Mahler
- Gulfstream
- HART
- Huntington Bank
- Hylant Insurance
- IPS
- JDI
- Keller Logistics
- Key Bank
- Kokosing Industrial
- Libbey Glass LLC
- Lourdes University
- Toledo Lucas County Port Authority
- Magna International
- Mannik & Smith Group
- Marshall Melhorn
- Medical Mutual of Ohio
- Mercy Health Partners
- Miller Diversified
- Mosser Construction
- NAI Harmon
- NECA
- North Star Bluescope Steel
- North Coast Gas Trasnmission
- NSG
- Ohio's Electric Cooperatives
- Ohio Logisitcs
- Owens Community College
- Owens Corning
- Penta Career Center
- Pioneer Lines
- Plante Moran
- Plastic Technologies, Inc.
- PNC Bank
- Poggemeyer Design
- Polaris Logistics
- Premier Bank
- ProMedica
- Rehmann
- Reichle Klein Group
- Nooter Toledo
- Rudolph Libbe Group
- Shumaker
- Signature Bank
- SSOE
- TTL Associates
- Toledo Edison/First Energy
- Toledo Refining Company
- University Of Toledo
- Vestian Global Workplace Solutions
- VORYS, Sater, Seymour & Pease
- Waterford Bank
- William Vaughan