| Safway Atlantic, LLC | 2 | $14,676 | Apr 30, 2024 |
| Sanchem, Inc. | 4 | $2,176 | Oct 26, 2021 |
| Sanchez Construction Services | 7 | $22,492 | Oct 16, 2019 |
| Sandsmith Masonry Inc. | 3 | $10,384 | Apr 25, 2022 |
| Saul Gonzalez dba Saul Gonzalez | 4 | $13,395 | Jun 15, 2023 |
| SB Framing Inc. | 2 | $6,216 | Apr 29, 2022 |
| SB Specialty Metals LLC | 5 | $15,318 | May 16, 2019 |
| Schiele Graphics, Inc. | 8 | $7,514 | Sep 9, 2016 |
| Schiller Development, Inc. | 3 | $9,236 | Mar 23, 2017 |
| Scottish Plumber LLC | 8 | $15,900 | Jan 29, 2020 |
| Scrap Metal Services LLC | 7 | $8,335 | Dec 5, 2024 |
| Scrub, LLC | 23 | $23,776 | Jul 1, 2021 |
| Sean D Construction Services Inc. | 3 | $4,000 | May 19, 2016 |
| Seer Construction, LLC | 3 | $4,114 | Aug 25, 2017 |
| Serge International Corporation | 5 | $11,500 | May 20, 2019 |
| Serlin Iron & Metal Co., Inc. | 23 | $25,764 | May 14, 2026 |
| Servi-Sure, LLC | 13 | $19,810 | Nov 16, 2017 |
| Service Masonry, Inc. | 11 | $18,700 | Jan 3, 2020 |
| Service One, Inc. | 1 | $7,000 | Sep 5, 2017 |
| Shamrock Decorating, Inc. | 13 | $29,000 | Jan 17, 2020 |
| Sharlen Electric Co. | 10 | $14,680 | Dec 8, 2023 |
| Sherwin Community Painters, Inc. | 4 | $9,250 | Dec 16, 2021 |
| Shoorgot Construction, Inc. | 6 | $6,600 | Aug 12, 2025 |
| Siegal Steel Company | 7 | $3,990 | Mar 2, 2015 |
| Silbino Fernandez dba Silbino Fernandez | 10 | $10,000 | Aug 5, 2019 |
| Silliman Group, LLC | 7 | $33,000 | Aug 26, 2021 |
| Silver Dollar Castings Corp. | 2 | $4,000 | Feb 11, 2026 |
| Singer Safety Company | 25 | $13,942 | Aug 31, 2018 |
| Sipi Metals Corp. | 42 | $52,565 | Nov 1, 2023 |
| Sitko Masonry, Inc. | 2 | $5,600 | May 16, 2016 |
| Skild Plating Corp. | 18 | $6,025 | Mar 31, 2017 |
| Skoczen Construction Inc., | 15 | $42,419 | Mar 12, 2018 |
| Skolnik Industries, Inc. | 11 | $28,464 | Mar 31, 2023 |
| SKW Industries, LLC dba Progressive Coating | 2 | $2,173 | Jul 21, 2026 |
| SKY Roofing & Siding, Inc. | 1 | $4,839 | May 16, 2024 |
| Skywest Airlines, Inc. | 1 | $4,000 | Feb 21, 2017 |
| Slidematic Acquisition, LLC dba Slidematic Products | 6 | $21,000 | Feb 19, 2026 |
| SM Masonry Walls Construction Inc. | 2 | $5,324 | Oct 12, 2017 |
| SM Masonry Walls LLC | 6 | $14,905 | Apr 1, 2024 |
| Smile Construction Inc. | 9 | $22,772 | Nov 16, 2023 |
| Smitty's Tree Service Inc. | 5 | $6,350 | Feb 1, 2024 |
| Social Security Administration | 12 | $0 | Feb 26, 2025 |
| Soho House Chicago LLC | 2 | $12,934 | Oct 23, 2017 |
| Solis Group, Inc. | 5 | $3,457 | Dec 9, 2021 |
| Solo Cup Operating Corporation | 9 | $63,774 | Jun 4, 2025 |
| Sommers and Fahrenbach, Inc. | 8 | $3,625 | Apr 19, 2018 |
| Sonoma Underground Services, Inc. | 5 | $6,915 | Mar 12, 2025 |
| Soudan Metals Company, Inc. dba Steel Fab & Finish, Inc. | 4 | $12,822 | Nov 21, 2025 |
| Soumar Masonry Restoration, Inc. | 21 | $13,220 | Aug 22, 2017 |
| South Chicago Packing LLC | 8 | $20,062 | Apr 3, 2025 |
| South Shore Iron Works, Inc. | 7 | $3,920 | Apr 7, 2016 |
| South Side Control Supply Co. | 3 | $6,693 | May 11, 2023 |
| Southwest Airlines Co. | 39 | $40,282 | Jul 9, 2024 |
| Southwest Dermatology | 5 | $2,000 | Jan 12, 2015 |
| Southwest Industries, Inc. dba Anderson Elevator Co. | 4 | $26,100 | Aug 2, 2021 |
| Southwest Spring Inc. | 2 | $9,000 | Feb 1, 2019 |
| Spartan Contractors Incorporated | 6 | $5,130 | Feb 16, 2017 |
| Specified Plating Co. | 29 | $39,946 | Mar 6, 2020 |
| Speedy Gonzalez Landscaping, Inc. | 7 | $24,925 | Sep 21, 2023 |
| Spin Art Nation Chicago, LLC | 5 | $3,000 | Mar 6, 2024 |
| Splash Power Wash LLC | 1 | $1,986 | Jul 1, 2026 |
| Sploot IL, PLLC | 1 | $6,000 | Jun 25, 2025 |
| SRL Roofing, Inc. | 18 | $80,318 | Nov 16, 2020 |
| ST. Croix Meats LLC | 1 | $3,400 | Oct 13, 2026 |
| Stalworth Underground LLC | 5 | $51,132 | Dec 3, 2024 |
| Standard Lumber Co. | 2 | $8,539 | Dec 12, 2023 |
| Stanley Brickwork, Inc. | 3 | $6,840 | Nov 18, 2021 |
| Stanley Spring and Stamping Corp. | 13 | $22,630 | Jan 14, 2026 |
| Star Design and Build LLC | 5 | $26,902 | Mar 16, 2018 |
| Star Roofing and Siding, Inc. | 43 | $133,873 | Nov 19, 2025 |
| Star Thermoplastic Alloys & Rubbers, Inc. | 23 | $8,000 | May 30, 2018 |
| Star Tuckpointing & Construction, Inc. | 2 | $3,800 | Sep 8, 2016 |
| Star-Lite Fabrication & Glass, Inc. | 3 | $6,824 | Jun 2, 2017 |
| Stead Sheet Metal Inc. | 8 | $10,200 | Mar 13, 2026 |
| Steel Hang'N Inc. | 6 | $8,380 | Oct 1, 2015 |
| Steel Solutions Firm, Inc. | 5 | $6,491 | Aug 3, 2016 |
| Sterling Spring, L.L.C | 3 | $15,075 | Sep 7, 2017 |
| Stone & Brick Masonry Group, Inc. | 4 | $2,273 | Feb 7, 2019 |
| Stone City Kitchen and Bath Design Center, Incorporated dba Stone City | 6 | $19,336 | Sep 5, 2019 |
| Stone Master | 3 | $2,876 | Oct 20, 2022 |
| Stosel Construction Inc. | 5 | $10,700 | May 23, 2024 |
| Strategic Site Contractors Inc. | 3 | $6,112 | Mar 6, 2020 |
| Strictly Trailer Repair, Inc. | 1 | $8,730 | Jun 14, 2018 |
| Stutz Plumbing, Inc. | 6 | $3,160 | Aug 5, 2015 |
| SU Carpentry, Inc. | 6 | $15,500 | Aug 15, 2023 |
| Sumit Construction Co., Inc. | 13 | $8,100 | Dec 15, 2017 |
| Summit Construction | 7 | $3,500 | Apr 22, 2015 |
| Summit Design & Build LLC | 2 | $11,420 | Jan 6, 2020 |
| Summit Design + Build LLC | 7 | $14,400 | Sep 11, 2020 |
| Sun Fresh Market, L.L.C. | 9 | $22,490 | Apr 2, 2025 |
| Sundberg America | 3 | $11,641 | Oct 6, 2017 |
| Sundstrom Pressed Steel Co. | 57 | $13,636 | Mar 8, 2017 |
| Sunrise Hitek Group LLC | 6 | $8,200 | Aug 16, 2022 |
| Superior Exteriors 2 Inc. | 5 | $8,979 | Mar 11, 2025 |
| Superior Fabrication Inc. | 4 | $13,000 | Jun 30, 2023 |
| Superior Graphite Company | 21 | $1,620 | May 27, 2015 |
| Superior Super Auto Wash, Inc. dba Express Car Wash | 3 | $14,110 | Sep 24, 2021 |
| Superior Windows & Doors, LLC | 3 | $6,406 | May 3, 2017 |
| Swedish Covenant Health dba Swedish Hospital | 3 | $2,072 | Apr 13, 2022 |
| Swissport USA, Inc. | 15 | $17,000 | Jan 23, 2017 |
| Symphony Bronzeville Park LLC dba Symphony Bronzeville | 1 | $1,450 | May 17, 2022 |
| Synergy Flavors, Inc. dba Synergy Flavors Innova LLC | 1 | $0 | Apr 2, 2026 |
| Tahoora Incorporated | 2 | $1,900 | Dec 2, 2021 |
| Tai Plumbing, LLC | 4 | $4,400 | Oct 3, 2017 |
| Tarmonbarry, LLC dba Keenan Sewer & Water | 12 | $67,100 | Nov 4, 2026 |
| Taylor Farms Illinois, Inc. | 1 | $10,000 | Aug 3, 2022 |
| Taylor Fresh Foods, Inc. | 4 | $4,000 | Sep 9, 2015 |
| Taylormade MCD, Inc. | 5 | $5,880 | Mar 13, 2015 |
| TDK Air Specialist, Inc. | 3 | $2,319 | Dec 11, 2018 |
| Team 1 Carpentry Inc. | 6 | $3,630 | Dec 1, 2015 |
| Team Solutions | 3 | $4,000 | Aug 19, 2015 |
| Team Solutions Industrial Services | 9 | $70,347 | Feb 23, 2017 |
| Tecnica Environmental Services, Inc. | 17 | $33,082 | Oct 26, 2022 |
| Ted Kawula Company | 18 | $26,515 | Mar 15, 2018 |
| Ted Tuckpointing Inc. | 1 | $1,989 | Mar 27, 2019 |
| Telco Machine and MFG., Inc. | 4 | $4,500 | Oct 12, 2023 |
| Tello's Hardwood Flooring | 4 | $7,708 | Mar 26, 2019 |
| Tempel Holdings, LLC dba Tempel Steel Company | 3 | $25,818 | Jun 18, 2026 |
| Tenesaca Brothers Construction Inc. | 8 | $33,790 | Jul 12, 2024 |
| Testa Produce, Inc. | 3 | $13,100 | Sep 25, 2015 |
| The Advance Equipment Manufacturing Company | 4 | $12,000 | Jan 26, 2024 |
| The Best Masonry Inc. | 25 | $13,999 | Oct 29, 2018 |
| The Domain Group LLC | 6 | $22,625 | Jul 6, 2016 |
| The Dream Wall, Inc. | 27 | $98,915 | Feb 13, 2017 |
| The Eli's Cheesecake Company | 58 | $53,783 | Mar 10, 2026 |
| The Gerber Group, Inc. dba Gerber Collision & Glass | 1 | $8,000 | Mar 6, 2025 |
| The Home City Ice Company | 11 | $21,346 | Jan 18, 2024 |
| The Home Depot | 23 | $75,651 | May 30, 2025 |
| The Hopewell Brewing Company LLC | 6 | $7,150 | Dec 8, 2025 |
| The Marvel Group, Inc. | 6 | $13,500 | Feb 10, 2015 |
| The Millard Group, Inc. dba Millard Chicago Window Cleaning LLC | 1 | $0 | Jun 29, 2018 |
| The Paniagua Group, Incorporated | 2 | $2,300 | Jul 20, 2020 |
| The Salvation Army dba the Salvation Army Metropolitan Division | 2 | $4,620 | Aug 23, 2017 |
| The Sherwin-Williams Company | 157 | $56,957 | May 8, 2024 |
| The Sherwin-Williams Manufacturing Company | 1 | $7,366 | Feb 10, 2023 |
| The Temple of Kriya | 2 | $0 | Feb 21, 2019 |
| The University of Chicago Medical Center | 12 | $8,187 | May 13, 2025 |
| Thorntons LLC dba Thorntons Store # 322 | 3 | $8,690 | Dec 29, 2022 |
| Three Brother's Roofing, Inc. | 1 | $1,960 | Apr 15, 2015 |
| Tidwell Roofing & Sheet Metal, Inc. | 11 | $25,093 | Aug 2, 2016 |
| Time Development, LLC | 5 | $14,441 | May 9, 2023 |
| Tin Man Heating & Cooling, Inc. dba DCS Mechanical Inc. | 7 | $24,290 | Sep 11, 2020 |
| Tir Conaill Concrete, Inc. | 1 | $4,096 | Aug 31, 2020 |
| TJW Plumbing, Inc. | 8 | $13,762 | Dec 15, 2022 |
| TK Maintenance LLC dba TK Sewer & Water | 2 | $0 | Mar 10, 2020 |
| TLB Glass Block and Tuckpointing | 4 | $5,266 | Mar 19, 2021 |
| Tom Humphries dba HI-Temp Roofing | 7 | $14,209 | Jul 20, 2020 |
| Tony Sanchez | 1 | $1,960 | Jul 1, 2016 |
| Tony's Finer Foods Enterprises, LLC | 7 | $28,210 | Jun 8, 2023 |
| Tootsie Roll Industries, LLC | 24 | $127,632 | Apr 22, 2026 |
| Tootsie Roll MFG., LLC | 3 | $16,550 | Jul 24, 2025 |
| Tor Construction Co., Inc. | 29 | $24,064 | Sep 18, 2019 |
| Toro Construction, Corp. | 3 | $8,796 | Apr 16, 2026 |
| Torres Brothers, LLC | 8 | $47,770 | Mar 1, 2023 |
| Torres Construction, LLC | 6 | $8,677 | Sep 1, 2022 |
| Total Airport Services, LLC | 10 | $18,660 | Oct 7, 2019 |
| Total Sweeteners, Inc. | 1 | $12,000 | Feb 12, 2026 |
| Touchstone Group Solutions, Inc. | 8 | $8,500 | Aug 18, 2026 |
| Tough Cut Concrete Services, Inc. | 8 | $14,604 | Jul 3, 2018 |
| Tower Automotive | 9 | $16,938 | Nov 14, 2019 |
| Tower International - Chicago | 1 | $356 | Oct 26, 2016 |
| Trader Joes East Inc. | 5 | $28,173 | Mar 25, 2024 |
| Tramco Pump Co. | 24 | $21,696 | Jul 28, 2025 |
| Trans Mark Express | 2 | $1,500 | Aug 16, 2017 |
| Tri-City Electric Co. | 43 | $4,808 | Aug 8, 2018 |
| Tri-State Roofing & Construction LLC | 2 | $2,128 | Jan 8, 2025 |
| Triangle Package Machinery Company | 1 | $1,110 | Sep 13, 2022 |
| Tribco Construction Services, LLC | 7 | $10,640 | Feb 7, 2020 |
| Trinidad Construction | 1 | $5,600 | Oct 19, 2023 |
| TRK Remodeling Inc. | 2 | $3,500 | Jun 7, 2017 |
| Tronc, Inc. | 1 | $4,000 | May 11, 2016 |
| Trusty Plumbing, Inc. | 10 | $16,000 | Oct 20, 2022 |
| TS 210 LLC | 2 | $8,037 | Aug 23, 2023 |
| U-Haul Co. of Illinois, Inc. | 14 | $21,850 | Oct 1, 2024 |
| U.S. Pallets Inc. | 3 | $5,000 | Dec 2, 2020 |
| U.S. Postal Service | 408 | $213,087 | Dec 5, 2025 |
| U.S. Postal Service - Henry McGee | 1 | $0 | Mar 2, 2015 |
| U.S. Spice Mill, Inc. | 4 | $7,968 | Dec 5, 2016 |
| U.S. Trailer Parts & Supply, Inc. | 5 | $13,030 | Mar 21, 2023 |
| Ujamaa Construction, Inc. | 2 | $10,648 | Mar 9, 2017 |
| UK Stucco Inc. | 7 | $17,827 | Mar 30, 2023 |
| Ulrich & Associates Construction LLC | 1 | $2,344 | Aug 24, 2023 |
| Ulta Salon, Cosmetics & Fragrance, Inc. | 6 | $43,689 | Sep 13, 2022 |
| Umbrella Roofing Inc. | 4 | $6,650 | Nov 20, 2019 |
| Unicord Corporation | 20 | $21,400 | Jan 10, 2025 |
| Unilever Illinois Manufacturing, LLC | 2 | $14,260 | Mar 20, 2019 |
| Union League Club of Chicago | 7 | $4,875 | Nov 26, 2019 |
| United Airlines, Inc. | 66 | $59,365 | Mar 13, 2018 |
| United Builders Group Co. | 23 | $216,571 | Mar 13, 2025 |
| United Scaffolding, Inc. | 4 | $3,972 | Apr 9, 2025 |
| United Wire Craft, Inc. | 6 | $1,576 | Apr 22, 2015 |
| Universal Contractors, Inc. | 12 | $3,950 | Aug 23, 2017 |
| Universal Electric Foundry, Inc. | 76 | $15,350 | Feb 5, 2018 |
| Universal Scrap Metals, Inc. | 1 | $6,500 | Feb 18, 2026 |
| University of IL - Chicago | 1 | $0 | Oct 29, 2018 |
| University of IL - Chicago - Utilities and Energy Services | 2 | $0 | Mar 4, 2024 |
| University of Illinois at Chicago - Physical Education Building | 3 | $0 | Jul 22, 2015 |
| Uno Janitorial and Maintenance Service, LLC | 2 | $3,900 | Nov 20, 2015 |
| Upturn Construction, Inc. | 1 | $1,940 | Dec 19, 2017 |
| Urbn US Retail LLC dba Anthropologie, Inc. | 3 | $9,458 | Aug 31, 2026 |