| CUBIC CORPORATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2024 | Budget/Appropriations, Defense |
| ULTRA FKA ULTRA ELECTRONICS - FLIGHTLINE SYSTEMS | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2024 | Homeland Security, Defense, Budget/Appropriations |
| SAAB | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2021 | Budget/Appropriations, Defense |
| GM DEFENSE, LLC | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2021 | Budget/Appropriations, Defense, Homeland Security |
| LIVINGUARD AG | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2022 | Health Issues, Defense, Budget/Appropriations |
| ANDURIL INDUSTRIES, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2022 | Budget/Appropriations, Defense |
| THE BOEING COMPANY | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2022 | Aviation/Airlines/Airports, Defense, Homeland Security |
| CAMGIAN CORPORATION (FKA CAMGIAN MICROSYSTEMS CORPORATION) | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q4 2021 | Budget/Appropriations, Computer Industry, Defense |
| UNIVERSITY OF KENTUCKY | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q4 2021 | Budget/Appropriations, Education |
| NERVGEN PHARMA CORP. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2021 | Budget/Appropriations, Defense, Health Issues |
| QUANTUM TECHNOLOGY SCIENCES, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2021 | Budget/Appropriations, Homeland Security |
| WHEELER BIO (FKA WHEELER LABS LLC) | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2021 | Health Issues, Science/Technology, Defense |
| FISTA DEVELOPMENT TRUST AUTHORITY | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2021 | Budget/Appropriations, Government Issues, Defense |
| ZERO - THE END OF PROSTATE CANCER | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2021 | Budget/Appropriations, Defense |
| SEMICONDUCTOR INDUSTRY ASSOCIATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2021 | Budget/Appropriations, Defense, Taxation/Internal Revenue Code |
| PISON TECHNOLOGY, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2021 | Defense |
| THE MICHAEL J. FOX FOUNDATION FOR PARKINSON'S RESEARCH | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2021 | Budget/Appropriations |
| TORCH RESEARCH LLC | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2021 | Budget/Appropriations, Intelligence, Computer Industry |
| MICROGEM INTERNATIONAL PLC | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q4 2020 | Defense |
| ZOONO PROTECT AMERICA | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2020 | Defense, Travel/Tourism, Food Industry (safety, labeling, etc.) |
| WEARABLE ARTIFICIAL ORGANS, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q4 2020 | Health Issues, Defense, Budget/Appropriations |
| AVIATION TRAINING CONSULTING, LLC | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q4 2020 | Budget/Appropriations, Aviation/Airlines/Airports, Defense |
| WASHINGTON STATE UNIVERSITY | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2020 | Budget/Appropriations, Defense, Energy/Nuclear |
| HOTTINGER BRUEL & KJAER SOLUTIONS, LLC | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2020 | Homeland Security, Science/Technology, Defense |
| CACI INTERNATIONAL, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2020 | Budget/Appropriations, Defense, Government Issues |
| HONEYWELL INTERNATIONAL ON BEHALF OF ADVANCED TURBINE ENGINE COMPANY (ATEC) | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2020 | Budget/Appropriations, Aerospace, Defense |
| RICE UNIVERSITY | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2020 | Defense |
| ADVANCED NAVIGATION AND POSITIONING CORPORATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2020 | Budget/Appropriations, Aviation/Airlines/Airports, Defense |
| NUTANIX, INC. AND ITS AFFILIATES | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2020 | Budget/Appropriations, Defense, Computer Industry |