144 0001428227 XXXXXXXX LIVE 0001318220 Waste Connections Inc 001-34370 6220 HWY 7 Suite 600 Woodbridge A6 L4H4G3 9055327510 Patrick J Shea Officer Waste Connections Inc. Merrill Lynch One Bryant Park FL 40 New York NY 10036 7500 1171915 254080912 06/05/2026 NYSE Common Share 06/01/2016 Restricted Share Unit Vesting N/A N 970 02/16/2016 N/A Common Share 02/19/2024 Restricted Share Unit Vesting N/A N 4971 02/16/2025 N/A Common Share 02/18/2025 Restricted Share Unit Vesting N/A N 1559 02/18/2025 N/A Y 06/05/2026 Patrick J Shea