| Advanced Carbide Grinding, Inc. | 2 | $0 | Mar 1, 2018 |
| Alumina Ceramic Components, Inc. | 2 | $0 | Apr 10, 2015 |
| Arthur R. Warner Company | 6 | $2,500 | Feb 13, 2026 |
| Ati Flat Roll Holding LLC | 1 | $6,000 | Aug 30, 2023 |
| B.D.P.J.2 Enterprise, Inc. | 11 | $4,800 | Jun 29, 2023 |
| Berkheimer Construction and Landscaping, LLC | 2 | $1,400 | Nov 13, 2017 |
| Bridge Deck Solutions | 5 | $4,000 | Jan 28, 2020 |
| Carpenters Technology | 1 | $7,711 | Jul 26, 2024 |
| CBC Latrobe Acquisition, LLC | 5 | $22,000 | Jan 23, 2026 |
| Chestnut Ridge Foam Inc | 55 | $20,510 | Sep 2, 2021 |
| City Brewing Company, Latrobe Acquisition, LLC | 4 | $13,032 | Dec 22, 2016 |
| G.V.D. Coating, Inc. | 10 | $3,600 | Jan 30, 2026 |
| GBC Advanced Materials, LLC. | 3 | $0 | Aug 8, 2023 |
| Gutchess Hardwoods, Inc. | 1 | $2,155 | Apr 24, 2017 |
| Hydro Carbide Tool Company | 3 | $10,748 | Nov 26, 2019 |
| Import Export Tire Company Inc. | 18 | $17,864 | Mar 20, 2017 |
| J.Poli, Inc. | 2 | $9,000 | Jan 7, 2026 |
| Jerry Liptak | 8 | $2,900 | Sep 13, 2017 |
| JMS Fabricated Systems | 49 | $34,189 | Nov 25, 2025 |
| Kennametal, Inc. | 46 | $3,685 | Jan 23, 2026 |
| Lang Specialty Trailers, LLC | 6 | $8,702 | Jan 19, 2022 |
| Latrobe Pattern Company | 18 | $15,500 | Jun 3, 2019 |
| Latrobe Specialty Metals, LLC | 7 | $42,439 | Jun 24, 2026 |
| Laurel Valley Graphics, Inc. | 5 | $3,000 | Oct 24, 2016 |
| Lehigh Specialty Melting, Inc. | 2 | $9,200 | Feb 28, 2025 |
| Ligonier Stone & Lime Concrete | 2 | $1,400 | May 6, 2016 |
| LJ Construction | 2 | $1,705 | Nov 8, 2019 |
| Lone Pine Construction, Inc. | 4 | $5,165 | Mar 15, 2016 |
| Loyalhanna Care Center | 13 | $3,200 | Jun 8, 2022 |
| Opco, Inc. | 5 | $6,600 | May 15, 2024 |
| Pittsburgh Roofing Solutions, Inc | 2 | $3,500 | Jul 1, 2025 |
| Premium Plastic Solutions, LLC. | 20 | $27,755 | Jan 14, 2019 |
| Quality Mould, Inc. | 24 | $7,560 | Mar 19, 2025 |
| R.A. Haitz Company, Inc. | 3 | $7,500 | Nov 13, 2017 |
| Raven Industries Inc. | 16 | $8,332 | Mar 24, 2016 |
| Rethage Brothers Roofing | 5 | $2,886 | Oct 28, 2016 |
| Saint-Gobain Ceramic Materials | 2 | $2,500 | May 5, 2017 |
| Saint-Gobain Ceramics & Plastics, Inc. | 3 | $0 | Oct 13, 2022 |
| Sandy's Window Co. Inc. | 4 | $2,800 | Apr 27, 2018 |
| Westmoreland Mechanical Testing & Research, Inc. | 4 | $2,025 | Feb 8, 2016 |
| Westmoreland Plastics Company | 24 | $15,900 | Oct 1, 2024 |