| GOOGLE CLIENT SERVICES | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2026 | Budget/Appropriations, Defense, Energy/Nuclear |
| ZEROFOX, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2026 | Defense |
| PROMETHEUS INDUSTRIES, INC. (FKA FL2024-008, INC.) | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2026 | Science/Technology, Defense |
| THE BOEING COMPANY | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2026 | Aerospace, Defense, Environment/Superfund |
| HIDDEN LEVEL, INC. | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2026 | Defense, Budget/Appropriations |
| INTERNATIONAL ORGANIZATION FOR MIGRATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2026 | Foreign Relations, Budget/Appropriations |
| GLOBAL BUSINESS TRAVEL ASSOCIATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2026 | Transportation, Taxation/Internal Revenue Code, Aviation/Airlines/Airports |
| CITY OF MARION, IOWA | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q2 2026 | Transportation, Roads/Highway |
| OFFICE OF THE COMMISSIONER OF BASEBALL D/B/A MAJOR LEAGUE BASEBALL | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2026 | Communications/Broadcasting/Radio/TV, Labor Issues/Antitrust/Workplace, Aviation/Airlines/Airports |
| NATIONAL LIMOUSINE ASSOCIATION | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q3 2025 | Transportation |
| REFUGEES INTERNATIONAL | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2025 | Foreign Relations |
| MCB HP BALTIMORE LLC | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2025 | Transportation, Economics/Economic Development |
| NORTH WIND TEST, LLC (FKA CALSPAN AERO SYSTEMS ENGINEERING, INC.) | CORNERSTONE GOVERNMENT AFFAIRS, INC. | Q1 2025 | Defense, Budget/Appropriations |