| A. Cardillo & Son, Inc. | 1 | $4,634 | Dec 26, 2024 |
| Abm Industries Incorporated | 3 | $4,000 | Jul 12, 2017 |
| Acton Metal Processing Corporation | 13 | $4,836 | Feb 4, 2020 |
| Aggregate Industries-Northeast Region | 6 | $10,300 | Aug 31, 2018 |
| Arbor Works, LLC | 1 | $2,300 | Apr 16, 2019 |
| Arthur C. Lamb Company, Inc. | 8 | $7,972 | Oct 10, 2018 |
| Artisan Industries Inc. | 63 | $10,486 | Mar 24, 2023 |
| Beaver-Visitec International, Inc. | 1 | $3,500 | Nov 18, 2015 |
| Best in Wood Construction Inc | 2 | $6,000 | Jun 13, 2025 |
| Brunelle Modular Erectors Corp. | 3 | $3,000 | Aug 2, 2024 |
| Carlco Construction, Inc. | 1 | $3,779 | Feb 13, 2020 |
| Center Construction Group, Inc. | 6 | $14,950 | May 23, 2022 |
| CHM Carpentry, Inc. | 1 | $2,679 | May 5, 2023 |
| Comprint, Inc. | 17 | $12,400 | Aug 5, 2022 |
| Conigliaro Block, Inc. | 9 | $11,050 | Feb 16, 2023 |
| Costco Wholesale Corporation | 4 | $12,000 | May 28, 2025 |
| Counteredge, LLC | 16 | $6,800 | Feb 24, 2015 |
| Creonte Tire & Auto, Inc. | 1 | $4,144 | Sep 14, 2026 |
| Dandm, LLC | 17 | $28,825 | Sep 11, 2017 |
| Darren Keane, Inc. | 3 | $2,400 | May 14, 2015 |
| DM Construction Group, Inc | 7 | $14,461 | Sep 26, 2023 |
| Dreamline Modular Homes, Inc | 3 | $3,326 | Nov 20, 2017 |
| East Coast Erectors LLC | 19 | $17,199 | Oct 17, 2018 |
| Entasis Therapeutics, Inc. | 1 | $4,641 | Mar 19, 2019 |
| F.M. Home Improvement, Inc. | 1 | $2,695 | Oct 8, 2015 |
| Fab Construction Inc | 5 | $18,647 | Mar 9, 2022 |
| Fabtron Corporation | 33 | $14,665 | Jun 13, 2024 |
| Frame Specialists, Inc. | 7 | $6,810 | Dec 12, 2018 |
| GLYNN Electric, Inc. | 24 | $67,630 | Mar 3, 2020 |
| Greylock Roofing Company, Inc. | 2 | $4,839 | Mar 4, 2024 |
| H&R Roofing & Construction Inc. | 9 | $24,751 | Aug 3, 2022 |
| H.A. Leo Crane Service, LLC | 2 | $8,000 | Jan 13, 2025 |
| Harold Brothers Mechanical Contractors Inc. | 4 | $11,503 | Apr 16, 2025 |
| J. Calnan & Associates, Inc | 16 | $15,882 | Jul 3, 2025 |
| J.T. Haffey Builders, Inc. | 25 | $34,950 | Dec 12, 2019 |
| Jack Construction Corporation | 2 | $4,839 | Mar 4, 2024 |
| Jason Kirby Inc | 5 | $4,000 | Feb 14, 2020 |
| Lavallee Bakery Distributers LLC | 4 | $5,000 | Dec 22, 2016 |
| Light Metal Platers, LLC | 41 | $4,574 | Oct 12, 2017 |
| LM Martins Carpentry Inc | 1 | $2,926 | Sep 30, 2021 |
| Lumicks USA, Inc. | 6 | $6,000 | Oct 4, 2022 |
| M. O'Conner, Inc. | 1 | $2,500 | Dec 10, 2019 |
| Maclellan Company | 3 | $2,326 | Sep 1, 2017 |
| Mal Elfman's of Waltham Inc | 10 | $8,000 | Jan 20, 2023 |
| Manuel Zaruma | 2 | $4,400 | Oct 8, 2015 |
| Marchi Paving and Excavation Contractor, Inc. | 1 | $2,500 | Mar 10, 2020 |
| Mark Rogers Development, Inc | 3 | $3,920 | Jun 30, 2015 |
| Marley Properties Waltham, LLC | 1 | $1,250 | Sep 21, 2022 |
| Mike Pham | 3 | $2,800 | Jun 30, 2015 |
| Milhomem's Construction Inc. | 3 | $10,046 | May 5, 2023 |
| MJM Construction Corp Inc | 1 | $2,000 | Nov 9, 2015 |
| Nivelos Father and Son Inc | 4 | $13,053 | Dec 20, 2021 |
| Nova Biomedical Corporation | 2 | $8,998 | Mar 4, 2024 |
| Obdulio Palma | 5 | $17,840 | Sep 7, 2023 |
| Omar Pineda | 3 | $4,800 | Mar 31, 2016 |
| Paul F. Young Excavating | 1 | $2,000 | Apr 26, 2018 |
| Pitney Bowes | 4 | $14,502 | Jan 10, 2022 |
| Prestige Custom Mirror & Glass, Inc. | 6 | $2,225 | Dec 7, 2017 |
| Prism Response LLC | 1 | $4,000 | Mar 4, 2024 |
| RCS Contractors, LLC. | 2 | $18,480 | Oct 8, 2015 |
| S.L. Chasse Welding & Fabricating, Inc. | 6 | $19,064 | Feb 22, 2022 |
| Shannon Gutter Services | 5 | $15,000 | Mar 23, 2017 |
| Shawnlee Construction, LLC | 116 | $390,303 | Apr 29, 2026 |
| SPX Construction Services, Inc. | 3 | $4,965 | Mar 7, 2025 |
| Ultimate Chimney Sweep, Inc. | 2 | $4,200 | Nov 9, 2015 |
| United Industrial Service Incorporated | 1 | $2,500 | Jun 30, 2021 |
| USA Roofing, Inc. | 6 | $6,379 | Mar 28, 2025 |
| W.J. Skouras & Co. | 3 | $1,648 | Oct 8, 2024 |
| Waltham Lumber Company, Incorporated | 2 | $6,000 | May 8, 2019 |
| Worcester Building Systems | 4 | $2,800 | Sep 14, 2022 |