| ZERO - THE END OF PROSTATE CANCER | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2023 | Budget/Appropriations, Health Issues, Veterans |
| SEMICONDUCTOR INDUSTRY ASSOCIATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2024 | Budget/Appropriations, Science/Technology, Taxation/Internal Revenue Code |
| NATIONAL LIMOUSINE ASSOCIATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2024 | Transportation |
| GLOBAL BUSINESS TRAVEL ASSOCIATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2024 | Homeland Security, Aviation/Airlines/Airports, Transportation |
| AMPERE COMPUTING LLC | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2024 | Science/Technology, Computer Industry, Taxation/Internal Revenue Code |
| AMERICAN COLLEGE OF PREVENTIVE MEDICINE | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2024 | Budget/Appropriations, Health Issues |
| XLIGHT INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2024 | Budget/Appropriations, Science/Technology, Energy/Nuclear |
| SAP AMERICA, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2022 | Science/Technology |
| PARRAID, LLC | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2022 | Budget/Appropriations, Defense, Disaster Planning/Emergencies |
| MERLIN INTERNATIONAL, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2020 | Homeland Security, Science/Technology, Defense |
| SECURE DEMOCRACY | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2020 | Government Issues |