| U.S. Cellular | US | — | 1 |
| U.S. Eagle Federal Credit Union | US | — | 1 |
| U.S. Express Enterprises, Inc. | US | — | 2 |
| U.S. HealthWorks | US | — | 1 |
| U.S. Restaurants, Inc. | US | — | 1 |
| U.S. Small Business Administration (SBA) | US | — | 1 |
| U.S. Translation Company | US | — | 1 |
| U.S. Trust: Bank of America | US | — | 1 |
| U.S.Vision, Inc. | US | — | 1 |
| U.S.Vision, Inc. (JC Penney Optical) | US | — | 1 |
| U.S. Waffle Inc | US | — | 1 |
| U.S. Xpress Enterprises, Inc. | US | — | 1 |
| UA Sprinkler Fitters Local 669 JATC | US | — | 1 |
| UA Sprinkler Fitters Local 669 Joint Apprenticeship and Training Committee (“JATC”) | US | — | 1 |
| UA Sprinkler Fitters Local 669 Joint Apprenticeship and Training Committee | US | — | 1 |
| UAMG, LLC | US | — | 2 |
| UAS | US | — | 1 |
| UB Greensfelder LLP | US | — | 1 |
| UBEO Midco LLC | US | — | 2 |
| Uber | US | — | 1 |
| Uber Technologies | US | — | 1 |
| Uber Technologies, Inc. | US | Professional Services | 6 |
| UBS | US | — | 1 |
| UBS Financial Securities Inc | US | — | 1 |
| UBS O'Connor LLC | US | — | 1 |
| UC Davis Health | US | — | 1 |
| UC San Diego Health | US | — | 3 |
| UC San Diego Health Hillcrest - Hillcrest Medical Center | US | — | 1 |
| UC San Diego School of Medicine | US | — | 1 |
| UChicago Medicine Medical Group | US | — | 1 |
| UCLA Health | US | — | 2 |
| UCLA Summer Sessions & International Education Office | US | — | 1 |
| Uconn Health | US | — | 2 |
| UCSF Family Medicine Center at Lakeshore | US | — | 1 |
| UCSF Medical Center | US | — | 1 |
| uDocor, Inc. dba | US | — | 1 |
| UFCW & Employers Trust, LLC | US | — | 1 |
| UFCW Local 135 | US | — | 2 |
| UFCW Local 1776 | US | — | 1 |
| UFCW Local 342 | US | — | 1 |
| UFCW Local 655 Food Employers Joint Pension | US | — | 1 |
| UFCW Local 655 Food Employers Pension Plan | US | — | 1 |
| UFP TECHNOLOGIES INC | US | Healthcare | 1 |
| UHY Advisors Northeast | US | — | 1 |
| UI Community HomeCare | US | — | 1 |
| UIG, Inc. dba United Insurance Group | US | — | 2 |
| Uintah Basin Healthcare | US | — | 1 |
| UKG | US | — | 1 |
| Ullrich Delevati CPAs | US | — | 1 |
| Ulrich Consulting & Investment Group, LLC d/b/a Ulrich Inves | US | — | 1 |
| Ultimate Care, Inc | US | — | 1 |
| Ultra Clean Holdings, Inc. | US | Technology | 2 |
| Ultrafab, Inc. | US | — | 1 |
| Ultrafabrics, Inc. | US | — | 1 |
| Ultrahuman Healthcare Private Limited | US | — | 1 |
| Ultralife Corporation | US | Manufacturing | 1 |
| Ultratec, Inc. | US | — | 1 |
| Ultratec Inc. / Captel Inc. | US | — | 1 |
| Umass Memorial | US | — | 2 |
| Umass Memorial Health | US | — | 2 |
| UMass Memorial Medical Group | US | — | 1 |
| Umbrage | US | — | 1 |
| Umpqua Community College | US | — | 1 |
| Unanet, Inc. | US | — | 1 |
| UNAPEN, Inc. | US | — | 1 |
| UNCLE Credit Union | US | — | 1 |
| Undefined | US | — | 1 |
| Under Armour, Inc. | US | Manufacturing | 2 |
| UnderArmour dba MyFitnessPal | US | — | 1 |
| Underwriters Laboratories Inc. | US | — | 1 |
| Underwriters Laboratories Inc and UL Inc. | US | — | 1 |
| Unibail-Rodamco-Westfield | US | — | 1 |
| UniBank | US | — | 2 |
| UniBank for Savings | US | — | 6 |
| UniCarriers Americas Corporation | US | — | 1 |
| Unico Properties, LLC | US | — | 1 |
| Uniek, Inc. | US | — | 1 |
| Unified Pain Management | US | — | 1 |
| Unified Resources, Inc. | US | — | 1 |
| Unified Trust Company, N.A. | US | — | 1 |
| UniFirst Corporation | US | — | 1 |
| Unify Holdings LLC | US | — | 1 |
| Union Bank and Trust Company | US | — | 2 |
| Union Bank N.A. | US | — | 1 |
| Union Bank & Trust Company | US | — | 1 |
| Union Benefit Planners, Inc. | US | — | 1 |
| Union College | US | — | 1 |
| Union County Commissioners | US | — | 1 |
| Union Home Mortgage Corp | US | — | 1 |
| Union League Boys and Girls Club | US | — | 1 |
| Uniplast Industries, Inc. | US | — | 1 |
| Unique Vintage | US | — | 1 |
| Unitarian Universalist Association | US | — | 1 |
| UNITE HERE | US | — | 1 |
| UNITE HERE Retirement Fund | US | — | 2 |
| United Airlines | US | — | 1 |
| United Airlines Inc. | US | — | 1 |
| United Association National Pension Fund (“the Fund”) | US | — | 1 |
| UNITED BACKCARE DBA Pacific Rehabiliation Centers | US | — | 1 |
| UNITED BACKCARE PS dba Pacific Rehabilitation Centers | US | Healthcare | 1 |
| United Bank | US | — | 1 |
| United Bank (now People's | US | — | 1 |
| United Bankshares, Inc. | US | — | 1 |
| United Bridge Partners | US | — | 1 |
| United Cerebral Palsy Heartland | US | — | 1 |
| United Domestic Workers of America | US | — | 1 |
| United Domestic Workers of America, AFSCME Local 3930 | US | — | 1 |
| United Faith Ministries | US | — | 1 |
| United Food & Commercial Workers Local No. 7 | US | — | 1 |
| United Health Care (Harvard Pilgrim Health Care) | US | — | 1 |
| United Health Centers of the San Joaquin Valley | US | — | 1 |
| United Healthcare | US | — | 1 |
| United Healthcare Services, Inc. (Welltok) | US | — | 1 |
| United Home Loans, Inc. | US | — | 1 |
| United Language Group, LLC | US | — | 1 |
| United Marketing, Inc. | US | — | 1 |
| United McGill Corporation | US | — | 1 |
| United Medical Doctors | US | Healthcare | 1 |
| United Medical Systems (DE), Inc. | US | — | 1 |
| UNITED NATURAL FOODS INC | US | Retail | 1 |
| United of Omaha Life Insurance Company | US | — | 2 |
| United Regional Health Care Systems | US | — | 1 |
| United Seating and Mobility, L.L.C., d/b/a Numotion | US | — | 1 |
| United Seating and Mobility L.L.C, dba Numotion | US | — | 1 |
| United Seating and Mobility, LLC d/b/a Numotion ("Numotion") | US | — | 1 |
| United Seating and Mobility LLC dba Numotion | US | — | 1 |
| United Service Organizations | US | — | 1 |
| United Shore Financial Services, LLC | US | — | 1 |
| United States and Canadian | US | — | 1 |
| United States Medical Supply | US | — | 1 |
| United States Postal Service (USPS) | US | — | 1 |
| United States Soccer Federation, Inc. | US | — | 1 |
| United States Surety Company, and | US | — | 1 |
| United States Tennis Association Texas | US | — | 1 |
| United Steel Workers Union Local 286 | US | — | 1 |
| United Steelworkers Local 286 | US | — | 1 |
| United Time Group LLC d/b/a Ashford.com | US | — | 1 |
| United Veterinary Care | US | — | 1 |
| United Way of Connecticut, Inc. | US | — | 1 |
| United Way of Greater Portland | US | — | 1 |
| United Wheels | US | — | 1 |
| United Wholesale Mortgage | US | — | 1 |
| United Zion Retirements Community | US | — | 1 |
| UnitedHealth Care Services, Inc. Single Affiliated Covered Entity | US | Healthcare | 1 |
| UnitedHealth Group health plan single affiliated covered entity | US | — | 1 |
| UNITEDHEALTH GROUP INC | US | Insurance | 1 |
| UnitedHealthcare | US | — | 13 |
| UnitedHealthcare (Devine Joshua) | US | — | 1 |
| UnitedHealthcare Student Resources | US | — | 4 |
| Unitedhealthcare ("UHC") | US | — | 1 |
| UnitedLex Corporation | US | — | 1 |
| Unitransfer USA, Inc. | US | — | 1 |
| Unity Health Insurance | US | — | 1 |
| Unity Hunt, Inc. | US | — | 2 |
| Unity National Bank | US | — | 1 |
| Unity National Bank of Houston | US | — | 1 |
| Unity Technologies SF | US | — | 1 |
| UnityPoint Health | US | — | 3 |
| Universal Automation & | US | — | 1 |
| Universal Care DBA Brand New Day | US | — | 1 |
| Universal Lenders, LLC | US | — | 1 |
| Universal Logistics Holdings | US | — | 1 |
| Universal Music Group | US | — | 2 |
| Universal Plant Services, LLC | US | — | 2 |
| Universal Pure, LLC | US | — | 2 |
| UniversalPegasus International | US | — | 1 |
| University Federal Credit Union | US | — | 3 |
| University Hospital | US | — | 2 |
| University Hospitals Bristol and Weston NHS Foundation Trust | GB | — | 1 |
| University Medical Center of Southern Nevada | US | Healthcare | 1 |
| University Medical Center of Southern Nevada (UMC) | US | — | 1 |
| University Muslim Medical Association | US | — | 1 |
| University of Alaska | US | — | 2 |
| University of Alaska Foundation | US | — | 1 |
| University of Alaska System | US | — | 1 |
| University of Baltimore | US | — | 1 |
| University of California | US | — | 1 |
| University of California at Los Angeles | US | — | 1 |
| University of California, Berkeley | US | — | 2 |
| University of California, Berkeley (The Regents of the University of California) | US | — | 1 |
| University of California Davis Health | US | — | 1 |
| University of California Davis Medical Center | US | — | 2 |
| University of California Irvine | US | — | 1 |
| University of California Irvine Medical Center | US | — | 1 |
| University of California Los Angeles | US | — | 1 |
| University of California, Riverside | US | — | 1 |
| University of California Santa Barbara | US | — | 1 |
| University of California Santa Cruz | US | — | 1 |
| University of California, Washington Center (UCDC) | US | — | 1 |
| University of Central Florida | US | — | 1 |
| University of Colorado | US | — | 2 |
| University of Connecticut | US | — | 1 |
| University of Dallas | US | — | 1 |
| University of Detroit Mercy | US | — | 2 |
| University of Florida | US | — | 3 |
| University of Hawai'i - Hawai'i Community College | US | — | 1 |
| University of Hawaii Maui College | US | — | 1 |
| University of Illinois | US | — | 1 |
| University of Iowa Health Care | US | — | 1 |
| University of Kentucky | US | — | 1 |