X0508 4 2024-02-16 false 0001318220 Waste Connections, Inc. WCN 0001064299 MITTELSTAEDT RONALD J 3 WATERWAY SQUARE PLACE SUITE 110 THE WOODLANDS TX 77380 true true false false President & CEO false Common Shares 2024-02-17 4 M false 459.00 0.00 A 221210.00 D Common Shares 2024-02-17 4 F false 181.00 167.87 D 221029.00 D Common Shares 2024-02-17 4 M false 1941.00 0.00 A 222970.00 D Common Shares 2024-02-17 4 F false 764.00 167.87 D 222206.00 D Common Shares 2024-02-18 4 M false 879.00 0.00 A 223085.00 D Common Shares 2024-02-18 4 F false 346.00 167.87 D 222739.00 D Common Shares 2024-02-19 4 M false 1066.00 0.00 A 223805.00 D Common Shares 2024-02-19 4 F false 420.00 167.87 D 223385.00 D Common Shares 2024-02-19 4 M false 6166.00 0.00 A 229551.00 D Common Shares 2024-02-19 4 F false 2427.00 167.87 D 227124.00 D Common Shares 2024-02-19 4 M false 3621.00 0.00 A 230745.00 D Common Shares 2024-02-19 4 F false 1340.00 167.87 D 229405.00 D Common Shares 2024-02-19 4 M false 15528.00 0.00 A 244933.00 D Common Shares 2024-02-19 4 F false 5746.00 167.87 D 239187.00 D Restricted Shares Units 0.00 2024-02-16 4 A false 12450.00 0.00 A Common Shares 12450.00 12450.00 D Restricted Share Unites 0.00 2024-02-16 4 A false 12450.00 0.00 A Common Shares 12450.00 12450.00 D Restricted Share Units 0.00 2024-02-17 4 M false 459.00 0.00 D Common Shares 459.00 1378.00 D Restricted Share Units 0.00 2024-02-17 4 M false 1941.00 0.00 D Common Shares 1941.00 5824.00 D Restricted Shares Units 0.00 2024-02-18 4 M false 879.00 0.00 D Common Shares 879.00 1756.00 D Restricted Shares Units 0.00 2024-02-19 4 M false 1066.00 0.00 D Common Shares 1066.00 1067.00 D Performance Share Units 0.00 2024-02-19 4 M false 6166.00 0.00 D Common Shares 6166.00 0.00 D Restricted Share Units 0.00 2024-02-19 4 M false 3621.00 0.00 D Common Shares 3621.00 0.00 D Restricted Share Units 0.00 2024-02-19 4 M false 15528.00 0.00 D Common Shares 15528.00 0.00 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 an award of restricted share units. The award shall vest 25% per year over a four-year period following the date of grant. Represents an award of performance-based restricted share units. The target number of units is presented in the table. Subject to certain continued employment conditions and subject to accelerated vesting in certain circumstances, the number of units that actually vest at the end of the three-year performance period will be 0% to 250% of the scheduled amount, depending on the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period. The maximum number of units that may vest at the end of the three-year performance period is 31,125 (250% of the target number). Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on February 17, 2023 and vest in four equal annual installments. The common shares are reported in Table 1. Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on May 12, 2023 under the Reporting Person's letter agreement with the Issuer dated April 23, 2023. The award will vest in four equal annual installments on each of the anniversaries of February 17, 2023. The common shares are reported in Table 1. Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on February 18, 2022 and vest in four equal annual installments. The common shares are reported in Table 1. Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on February 19, 2021 and vest in four equal annual installments. The common shares are reported in Table 1. 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 19, 2021 and contained performance goals that the Issuer achieved over the three-year performance period from January 1, 2021 to December 31, 2023. 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 144.5% of the target number of shares subject to the award. The common shares are reported on Table 1. Represents the conversion of restricted share units into common shares of the Issuer. These restricted share units were previously vested and deferred under the Issuer's Deferred Compensation Plan. They are scheduled to be distributed pursuant to a multi-year installment method election as a result of the participant's transition from Chief Executive Officer of the Issuer to its Executive Chairman. The distribution represents the final distribution elected by the participant. Ronald Mittelstaedt 2024-02-21