| A-1 Drywall LLC | 18 | $4,520 | Jan 26, 2026 |
| A-1 Drywall LLC dba A-1 General Contracting & Interior Finishes | 1 | $200 | Jul 16, 2025 |
| Aire Care | 17 | $1,725 | Jul 16, 2024 |
| Bay Electric, Inc. | 20 | $3,040 | Jul 7, 2026 |
| Bill Siler Contracting, Inc. | 7 | $2,200 | Jun 5, 2018 |
| Blue Line Site Solutions, LLC | 1 | $0 | Jul 16, 2024 |
| Bulldog Construction, LLC | 9 | $800 | Aug 29, 2023 |
| Carmody-Lahti Real Estate, Inc. | 3 | $400 | Mar 29, 2022 |
| Copper Country Ford-Lincoln-Mercury, Inc. | 15 | $1,575 | Mar 15, 2023 |
| Dan Junttila | 9 | $600 | Jun 21, 2016 |
| Danielson Contracting, Inc. | 8 | $600 | May 25, 2021 |
| Dave Freeze | 10 | $3,900 | Aug 23, 2017 |
| Department of Interior, National Park Service, Isle Royale National Park | 28 | $0 | Sep 11, 2017 |
| DLH Contracting, LLC | 4 | $2,800 | Jul 16, 2024 |
| Erico Electric, Inc. | 6 | $62 | Dec 20, 2023 |
| Fireline Sprinkler LLC | 14 | $9,925 | Jul 10, 2025 |
| Focus Restaurant Concepts LLC dba Border Grill | 6 | $6,000 | Mar 10, 2026 |
| Gratiot River Woodworking & Construction | 9 | $400 | Jul 20, 2015 |
| Great Lakes Mineral Works, LLC | 8 | $750 | Jan 23, 2017 |
| Hamar Quandt Company dba 41 Lumber | 2 | $750 | Jun 1, 2026 |
| Hillstrom Drywall | 3 | $0 | Feb 25, 2025 |
| Houghton City of | 14 | $6,300 | Nov 2, 2017 |
| Houghton County Sheriffs | 3 | $250 | May 4, 2022 |
| Integrity Custom Concrete, Inc. | 10 | $1,400 | Mar 10, 2020 |
| J.D. Martineau Construction LLC | 12 | $2,050 | Jan 22, 2017 |
| Joey's Only of the Copper Country LLC dba Joey's Only Seafood Restaurant | 8 | $3,000 | Mar 14, 2023 |
| Keranen Well Service, Inc. | 3 | $950 | Jun 3, 2019 |
| Keweenaw Gem & Gift Inc | 1 | $0 | Jun 3, 2019 |
| LJJ Construction LLC | 30 | $5,720 | Jul 30, 2026 |
| Michigan Technological University | 81 | $60,125 | Jul 8, 2025 |
| Mjo Contracting, Inc. | 9 | $600 | Dec 7, 2023 |
| Northern Heating & Plumbing, Inc. | 5 | $0 | Aug 5, 2026 |
| Ojibwe Hazardous Abatement, LLC | 2 | $300 | Feb 12, 2025 |
| P.W. Campbell Contracting Company | 2 | $1,500 | Jul 30, 2026 |
| Patrick's Plumbing & Heating, Inc. | 9 | $1,550 | Jan 26, 2026 |
| Paul Hyrkas Construction | 5 | $660 | Aug 22, 2017 |
| Pepsi-Cola Bottling Company of Houghton Inc | 6 | $250 | May 14, 2025 |
| Portage Charter Township of Houghton County | 2 | $200 | Jul 5, 2016 |
| Red Jacket Construction LLC | 15 | $900 | Mar 27, 2019 |
| Romps Properties LLC | 1 | $400 | Jan 23, 2017 |
| Sayen's Enterprises, Inc. | 12 | $2,150 | Mar 13, 2023 |
| Seppala Contracting L.L.C. | 11 | $800 | Nov 18, 2025 |
| Somero Enterprises Inc | 8 | $1,100 | Jul 7, 2025 |
| Superior Block Company Inc | 2 | $200 | Oct 23, 2019 |
| Thomas J. Moyle, JR., Incorporated | 29 | $6,800 | Aug 5, 2026 |
| Tim's Excavating and Skid Steer Service, LLC | 9 | $600 | Nov 2, 2017 |
| Tractor Supply Company Store #1749 | 2 | $4,500 | May 12, 2025 |
| Up Sheds & Contracting LLC | 4 | $800 | Jul 6, 2022 |
| Wilmer's Heating & Cooling Service, Inc. | 10 | $2,300 | Mar 29, 2022 |
| World of Wood, Inc. | 10 | $5,550 | Nov 27, 2018 |
| Wuebben Construction Inc. | 15 | $3,900 | Aug 13, 2024 |