Charles Ladd is named as a lobbyist on federal disclosure filings for 15 clients through Invariant LLC and 1 other registrant. The most recent filing naming them posted in October 2026. Issues reported include Defense, Budget/Appropriations, Government Issues and Science/Technology.
Filers must list covered executive or legislative branch positions held. As filed:
| Client | Registrant | Latest | Issues |
|---|---|---|---|
| WORKDAY, INC. | WORKDAY, INC. | Q3 2026 | Labor Issues/Antitrust/Workplace, Government Issues, Budget/Appropriations |
| APPEN AI INC. | INVARIANT LLC | Q2 2025 | Science/Technology, Defense |
| GROQ, INC. | INVARIANT LLC | Q1 2026 | Science/Technology, Defense, Energy/Nuclear |
| MACH INDUSTRIES INC. | INVARIANT LLC | Q1 2026 | Defense |
| ICEYE NORTH AMERICA, INC. | INVARIANT LLC | Q1 2026 | Disaster Planning/Emergencies, Energy/Nuclear, Environment/Superfund |
| MATTERMOST, INC. | INVARIANT LLC | Q1 2026 | Defense, Government Issues |
| NAVY PIER | INVARIANT LLC | Q4 2025 | Budget/Appropriations |
| ARMADA SYSTEMS, INC. | INVARIANT LLC | Q4 2025 | Defense |
| MANAGEMENT ASSOCIATION OF PRIVATE PHOTOGRAMMETRIST SURVEYORS | INVARIANT LLC | Q4 2025 | Natural Resources, Budget/Appropriations |
| LUMAFIELD, INC. | INVARIANT LLC | Q4 2025 | Defense, Homeland Security |
| FERRETLY INTERNATIONAL, INC. | INVARIANT LLC | Q4 2025 | Defense, Foreign Relations, Immigration |
| PROTECT AI, INC. | INVARIANT LLC | Q3 2025 | Science/Technology, Defense, Intelligence |
| AIR SPACE INTELLIGENCE | INVARIANT LLC | Q3 2025 | Defense |
| LILT | INVARIANT LLC | Q3 2025 | Intelligence, Homeland Security, Defense |
| GOTENNA | INVARIANT LLC | Q3 2025 | Defense, Intelligence, Homeland Security |
| Year | Clients | Registrants |
|---|---|---|
| 2026 | 5 | 2 |
| 2025 | 12 | 1 |
Pay is not disclosed for individual lobbyists. Filings do not confirm that records with the same name are one person, so this page may combine people who share the name Charles Ladd. See the Capitol Clarity rankings and method.