X0306 4 2023-02-14 false 0001318220 Waste Connections, Inc. WCN 0001064299 MITTELSTAEDT RONALD J 3 WATERWAY SQUARE PLACE SUITE 110 THE WOODLANDS TX 77380 true true false false Executive Chairman Common Shares 2023-02-14 4 M false 3472.00 0.00 A 208969.00 D Common Shares 2023-02-14 4 F false 1752.00 134.68 D 207217.00 D Common Shares 2023-02-14 4 M false 662.00 0.00 A 207879.00 D Common Shares 2023-02-14 4 F false 329.00 134.68 D 207550.00 D Performance Share Units 0.00 2023-02-14 4 M false 3472.00 0.00 D Common Shares 3472.00 0.00 D Performance Share Units 0.00 2023-02-14 4 M false 662.00 0.00 D Common Shares 662.00 663.00 D Represents shares withheld by the Issuer in satisfaction of the applicable withholding taxes due in connection with the vesting of restricted share units and delivery of the converted common shares. Represents the conversion upon vesting of a performance-based restricted share unit award into common shares of the Issuer. The award was granted on February 14, 2020 and contained performance goals that the Issuer achieved over the three-year performance period from January 1, 2020 to December 31, 2022. The number of earned award units that vested at the end of the three-year performance period, as determined by the Compensation Committee of the Issuer's Board of Directors, was 131% of the target number of shares subject to the award. The common shares are reported on Table 1. Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The performance-based restricted share unit award was granted on February 14, 2020 and contained a performance target that was achieved by the Issuer over the one fiscal year period that ended December 31, 2020. As a result, the award shall vest 25% per year over the four-year period following the date of grant. The common shares are reported on Table 1. Ronald Mittelstaedt 2023-02-16