| 1 | Highmark Health | 33 | 10,000 and over | 2010 |
| 2 | Ecolab USA Inc | 27 | 10,000 and over | 2008 |
| 3 | USA Healthcare Management LLC | 22 | 100 to 499 | 2009 |
| 4 | E2 Consulting Engineers Inc | 21 | 500 to 999 | 2009 |
| 5 | Move Sales, Inc | 15 | 1,000 to 2,499 | 2008 |
| 6 | Modjeski And Masters Inc | 13 | 100 to 499 | 2008 |
| 7 | Orrick, Herrington & Sutcliffe LLP | 12 | 1,000 to 2,499 | 2007 |
| 8 | Ean Com LP | 12 | 1,000 to 2,499 | 2009 |
| 9 | The Industrial Company | 11 | 500 to 999 | 2007 |
| 10 | Cleveland Cliffs Steel LLC | 11 | 10,000 and over | 2013 |
| 11 | Mylan Inc | 10 | 1,000 to 2,499 | 2019 |
| 12 | Phenom Technology Solutions LLC | 9 | 10 to 19 | 2008 |
| 13 | Quadax Inc | 9 | 500 to 999 | 2012 |
| 14 | Zion Cloud Solutions LLC | 8 | 20 to 99 | 2022 |
| 15 | Highmark Inc | 8 | 10,000 and over | 2010 |
| 16 | Johnson, Mirmiran & Thompson, Inc. | 8 | 100 to 499 | 2011 |
| 17 | Tenaris Bay City, Inc. | 7 | 1,000 to 2,499 | 2018 |
| 18 | Allwyn Corporation | 7 | 20 to 99 | 2015 |
| 19 | Dominion Energy Technical Solutions, Inc. | 7 | 500 to 999 | 2020 |
| 20 | Enerflex Energy Systems Inc | 7 | 1,000 to 2,499 | 2012 |
| 21 | Rust Oleum Corporation | 6 | 2,500 to 4,999 | 2014 |
| 22 | Dominion Energy Services Inc | 6 | 2,500 to 4,999 | 2015 |
| 23 | The Dennis Group Inc | 5 | 500 to 999 | 2010 |
| 24 | Covestro LLC | 5 | 2,500 to 4,999 | 2015 |
| 25 | Luma Financial Technologies, LLC | 5 | 100 to 499 | 2019 |
| 26 | Giant Eagle Inc | 5 | 10,000 and over | 2007 |
| 27 | Saint-Gobain Ceramics & Plastics Inc | 4 | 10,000 and over | 2022 |
| 28 | United Biosource LLC | 4 | 2,500 to 4,999 | 2011 |
| 29 | Maverick Tube Corporation | 4 | 500 to 999 | 2018 |
| 30 | Niterra North America, Inc. | 4 | 500 to 999 | 2025 |
| 31 | K3 Technologies Inc | 4 | 20 to 99 | 2015 |
| 32 | Tamko Building Products LLC | 3 | 1,000 to 2,499 | 2007 |
| 33 | Central Business Solutions Inc | 3 | 100 to 499 | 2010 |
| 34 | Si Group Inc | 3 | 2,500 to 4,999 | 2008 |
| 35 | Med-Metrix, LLC | 3 | 2,500 to 4,999 | 2012 |
| 36 | N1 Solutions LLC | 3 | 20 to 99 | 2014 |
| 37 | The Chemours Company Fc LLC | 3 | 5,000 to 9,999 | 2015 |
| 38 | Dynamed Solutions LLC | 2 | 20 to 99 | 2020 |
| 39 | Momentive Performance Materials USA LLC | 2 | 1,000 to 2,499 | 2017 |
| 40 | Oerlikon Metco US Inc | 2 | 100 to 499 | 2016 |
| 41 | ND Paper Inc. | 2 | 1,000 to 2,499 | 2019 |
| 42 | LeverEdge Association | 2 | 20 to 99 | 2022 |
| 43 | Koppers Inc. | 2 | 1,000 to 2,499 | 2010 |
| 44 | One Sky Flight, LLC | 2 | 2,500 to 4,999 | 2017 |
| 45 | Laansu Incorporated | 2 | 20 to 99 | 2017 |
| 46 | Ancra International LLC | 2 | 500 to 999 | 2013 |
| 47 | Burgerbusters Inc | 2 | 2,500 to 4,999 | 2013 |
| 48 | Taylor Valve Technology, Inc. | 2 | 20 to 99 | 2011 |
| 49 | Roxul USA, Inc. | 2 | 1,000 to 2,499 | 2012 |
| 50 | Sulzer Pumps Solutions Inc | 2 | 500 to 999 | 2008 |
| 51 | Sis LLC | 2 | 100 to 499 | 2012 |
| 52 | Slr International Corporation | 2 | 500 to 999 | 2012 |
| 53 | Virginia Electric And Power Company Dba Dominion Energy Virginia | 1 | 5,000 to 9,999 | 2012 |
| 54 | Catalyst Construction Inc. | 1 | 100 to 499 | 2011 |
| 55 | Axon US Corp | 1 | 500 to 999 | 2013 |
| 56 | Braskem America, Inc. | 1 | 500 to 999 | 2016 |
| 57 | Sheetz, Inc. | 1 | 10,000 and over | 2020 |
| 58 | Kuraray America, Inc. | 1 | 500 to 999 | 2016 |
| 59 | Axens North America, Inc. | 1 | 100 to 499 | 2018 |
| 60 | P J Dick Incorporated | 1 | 1,000 to 2,499 | 2010 |
| 61 | Tenaris Global Services USA Corporation | 1 | 500 to 999 | 2018 |
| 62 | TMD Holdings, LLC | 1 | 20 to 99 | 2017 |
| 63 | Cleveland Brothers Equipment Co., Inc. | 1 | 1,000 to 2,499 | 2009 |
| 64 | Domain 6 Inc | 1 | 20 to 99 | 2020 |
| 65 | Diversified Gas & Oil Corporation | 1 | 1,000 to 2,499 | 2019 |
| 66 | Jupiter Aluminum Corporation | 1 | 100 to 499 | 2019 |
| 67 | Tenaris Coiled Tubes LLC | 1 | 500 to 999 | 2018 |
| 68 | Mylan Pharmaceuticals, Inc. | 1 | 1,000 to 2,499 | 2009 |
| 69 | Vec | 1 | 100 to 499 | 2015 |
| 70 | Ascension Technology Corporation | 1 | 10,000 and over | 2009 |
| 71 | Armacell, LLC | 1 | 1,000 to 2,499 | 2013 |
| 72 | Allnex USA Inc. | 1 | 5,000 to 9,999 | 2013 |
| 73 | Universal Technologies LLC | 1 | 100 to 499 | 2009 |
| 74 | The Thrasher Group, Inc. | 1 | 500 to 999 | 2010 |
| 75 | American Industrial Transport, Inc. | 1 | 500 to 999 | 2023 |
| 76 | Aviagen, Inc. | 1 | 1,000 to 2,499 | 2011 |
| 77 | Steptoe & Johnson LLP | 1 | 500 to 999 | 2016 |
| 78 | High Q Inc | 1 | 20 to 99 | 2012 |
| 79 | Lumos Networks Corp | 1 | 500 to 999 | 2014 |
| 80 | The Conservation Fund | 1 | 100 to 499 | 2009 |
| 81 | Nelson Brothers, Inc. | 1 | 500 to 999 | 2009 |
| 82 | Elementis Specialties Inc | 1 | 100 to 499 | 2016 |
| 83 | Casella Waste Systems, Inc. | 1 | 5,000 to 9,999 | 2018 |
| 84 | Carpenter Marty Transportation, Inc. | 1 | 20 to 99 | 2018 |
| 85 | Atlas Prediction Control LLC | 1 | 10 to 19 | 2023 |
| 86 | Bcs International Corporation | 1 | 100 to 499 | 2010 |
| 87 | Abt Global Inc | 1 | 1,000 to 2,499 | 2020 |
| 88 | Mednax Services Inc | 1 | 5,000 to 9,999 | 2008 |
| 89 | Balyo Inc | 1 | 20 to 99 | 2023 |
| 90 | Mondi Bags USA, LLC | 1 | 1,000 to 2,499 | 2014 |
| 91 | Delrin USA LLC | 1 | 100 to 499 | 2023 |
| 92 | Global Tote US LLC | 1 | 100 to 499 | 2022 |
| 93 | Mako Medical Laboratories LLC | 1 | 100 to 499 | 2015 |
| 94 | Gai Consultants Inc | 1 | 1,000 to 2,499 | 2009 |
| 95 | Time USA LLC | 1 | 500 to 999 | 2005 |
| 96 | Exiros USA Corporation | 1 | 20 to 99 | 2018 |
| 97 | Downing Wellhead Equipment LLC | 1 | 100 to 499 | 2018 |
| 98 | Paradyme Management Inc | 1 | 100 to 499 | 2012 |
| 99 | Master Drilling USA LLC | 1 | 10 to 19 | 2020 |
| 100 | Hydril Company | 1 | 500 to 999 | 2018 |
| 101 | Keylogic Systems | 1 | 20 to 99 | 2009 |
| 102 | Hm Home & Community Services LLC Dba Helion | 1 | 100 to 499 | 2016 |
| 103 | Pve LLC | 1 | 100 to 499 | 2019 |
| 104 | Strata Safety Products LLC | 1 | 100 to 499 | 2025 |
| 105 | Civil & Environmental Consultants, Inc. | 0 | 1,000 to 2,499 | 2010 |
| 106 | Mg LLC | 0 | 2,500 to 4,999 | 2008 |
| 107 | Ctl Engineering Inc | 0 | 100 to 499 | 2009 |
| 108 | Ampsight | 0 | 20 to 99 | 2021 |
| 109 | Clark Technology LLC | 0 | 20 to 99 | 2010 |
| 110 | The Mannik & Smith Group, Inc. | 0 | 100 to 499 | 2015 |
| 111 | Stratus Team, LLC | 0 | 500 to 999 | 2024 |
| 112 | CDI Engineering Services, LLC | 0 | 500 to 999 | 2009 |
| 113 | Specialized Engineering Solutions, Inc. | 0 | 20 to 99 | 2011 |
| 114 | Ferroglobe USA Metallurgical Inc. | 0 | 100 to 499 | 2024 |
| 115 | Rev.io, LLC | 0 | 20 to 99 | 2021 |
| 116 | Greenway Engineering, Inc. | 0 | 20 to 99 | 2024 |
| 117 | Becht Engineering Co. Inc. | 0 | 100 to 499 | 2012 |
| 118 | Broadway Electric Service Company LLC | 0 | 500 to 999 | 2008 |
| 119 | Continuous Learning Group, Inc. | 0 | 20 to 99 | 2024 |
| 120 | Aurora Flight Sciences | 0 | 500 to 999 | 2009 |
| 121 | E.L. Robinson Engineering Co | 0 | 100 to 499 | 2011 |
| 122 | Ulterra Drilling Technologies, LP | 0 | 100 to 499 | 2011 |
| 123 | Benchmark Therapies, Inc. | 0 | 500 to 999 | 2025 |
| 124 | West Virginia United Health System, Inc. | 0 | 10,000 and over | 2021 |
| 125 | Platinum Solutions | 0 | 100 to 499 | 2008 |
| 126 | Mustang Extreme Environmental Services, LLC. | 0 | 100 to 499 | 2017 |
| 127 | Summerwood Corporation | 0 | 5,000 to 9,999 | 2016 |
| 128 | Grw Engineers Inc | 0 | 100 to 499 | 2009 |
| 129 | Carbon Activated Corporation | 0 | 20 to 99 | 2016 |