Who lobbies for Castle Law?

2 lobbyists registered with the Illinois Secretary of State list Castle Law as a client or employer.

Source: public lobbyist registrations filed with the Illinois Secretary of State (Illinois Secretary of State, Lobbyist Division: Lobbyist Entity Client Data (Illinois Data Portal, updated daily), 2026 registrations), refreshed November 9, 2026. Represent this organization? Claim this profile (free).

Registered lobbyists (2)

• John Chip Humes
  Downers Grove, IL · Marquardt & Humes, INC.
• Scott Roger Marquardt
  Springfield, IL · Marquardt & Humes, INC.

Search lobbyists for Castle Law · More clients and employers: C