Canadian federal lobbying registration
Registrant: Abbey Martynes
Lobbying firm: Sandstone Group
Lobbying firm (French name): Groupe Sandstone
Client: Greater Toronto Airports Authority
Client (French name): Autorité aéroportuaire du Grand Toronto
Client address: 3111 Convair Drive, , Mississauga, ON, L5P 1B2, CAN
Client representative: Deborah Flint, President & Chief Executive Officer
Effective date: 2026-01-21
Posted: 2026-01-21