Canadian federal lobbying registration
Registrant: WILLIAM DEMPSTER
Lobbying firm: 3Sixty Public Affairs Inc.
Lobbying firm (French name): 3Sixty Public Affairs Inc.
Client: Arthritis Society Canada
Client (French name): Société de l’arthrite du Canada
Client address: 393 University Ave, Ste 1700, , Toronto, ON, M5G 1E6, CAN
Client representative: Patricia Barbato, President and Chief Executive Officer
Effective date: 2026-03-23
Posted: 2026-03-25