144 0002053089 XXXXXXXX LIVE 0001318220 Waste Connections, Inc 001-34370 3 waterway square place STE 110 The Woodlands TX 77380 2122681322 Derek Tan Employee Common Merrill Lynch

1780 Hughes Landing Blvd STE 900 The Woodlands TX 77380

1174 200996 255681232 03/04/2026 NYSE Common 03/03/2025 Stock Bonus Waste Connections Inc N 1168 02/18/2025 Stock Bonus- Compensation Y 03/04/2026 Derek Tan