X0508 4 2025-02-14 false 0001318220 Waste Connections, Inc. WCN 0001064299 MITTELSTAEDT RONALD J 3 WATERWAY SQUARE PLACE SUITE 110 THE WOODLANDS TX 77380 true true false false President & CEO false Common Shares 2025-02-16 4 M false 3113.00 0.00 A 231300.00 D Common Shares 2025-02-16 4 F false 758.00 189.04 D 230542.00 D Common Shares 2025-02-17 4 M false 460.00 0.00 A 231002.00 D Common Shares 2025-02-17 4 F false 146.00 189.04 D 230856.00 D Common Shares 2025-02-17 4 M false 1942.00 0.00 A 232798.00 D Common Shares 2025-02-17 4 F false 473.00 189.04 D 232325.00 D Common Shares 2025-02-18 4 M false 878.00 0.00 A 233203.00 D Common Shares 2025-02-18 4 F false 346.00 187.65 D 232857.00 D Common Shares 2025-02-18 4 M false 3990.00 0.00 A 236847.00 D Common Shares 2025-02-18 4 F false 1535.00 187.65 D 235312.00 D Restricted Share Units 0.00 2025-02-14 4 A false 14021.00 0.00 A Common Shares 14021.00 14021.00 D Restricted Share Units 0.00 2025-02-14 4 A false 14021.00 0.00 A Common Shares 14021.00 28042.00 D Restricted Share Units 0.00 2025-02-16 4 M false 3113.00 0.00 D Common Shares 3113.00 9337.00 D Restricted Share Units 0.00 2025-02-17 4 M false 460.00 0.00 D Common Shares 460.00 918.00 D Restricted Share Units 0.00 2025-02-17 4 M false 1942.00 0.00 D Common Shares 1942.00 3882.00 D Restricted Share Units 0.00 2025-02-18 4 M false 878.00 0.00 D Common Shares 878.00 878.00 D Performance Share Units 0.00 2025-02-18 4 M false 3990.00 0.00 D Common Shares 3990.00 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 35,052 (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 16, 2024 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 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 a subsidiary of the Issuer dated April 23, 2023. The award shall 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 a performance-based restricted share unit award into common shares of the Issuer. The award was granted on February 18, 2022 and contained performance goals that the Issuer achieved over the three-year performance period from January 1, 2022 to December 31, 2024. 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 113.6% of the target number of shares subject to the award. The common shares are reported on Table 1. Ronald Mittelstaedt 2025-02-19