WCN · Waste Connections, Inc. · Insider Trading

These shares were acquired under the Waste Connections, Inc. 2020 Employee Share Purchase Plan ("ESPP"), for the offering period of January 1, 2026 to June 30, 2026. In accordance with the ESPP, these shares were acquired at a price equal to 95% of the closing price of the shares on the New York Stock Exchange on June 30, 2026.

These shares were acquired under the Waste Connections, Inc. 2020 Employee Share Purchase Plan ("ESPP"), for the offering period of January 1, 2026 to June 30, 2026. In accordance with the ESPP, these shares were acquired at a price equal to 95% of the closing price of the shares on the New York Stock Exchange on June 30, 2026.

These shares were acquired under the Waste Connections, Inc. 2020 Employee Share Purchase Plan ("ESPP"), for the offering period of January 1, 2026 to June 30, 2026. In accordance with the ESPP, these shares were acquired at a price equal to 95% of the closing price of the shares on the New York Stock Exchange on June 30, 2026.

For purposes of this disclosure, Canadian dollar amounts have been converted to U.S. dollars based on the Bank of Canada daily average exchange rate on June 30, 2026. CAN $1 = US $.70

These shares were acquired under the Waste Connections, Inc. 2020 Employee Share Purchase Plan ("ESPP"), for the offering period of January 1, 2026 to June 30, 2026. In accordance with the ESPP, these shares were acquired at a price equal to 95% of the closing price of the shares on the New York Stock Exchange on June 30, 2026.

Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on April 1, 2026 and have a vesting schedule of 50% immediately and 50% on the first anniversary of the award date.

One Deferred Share Unit is the economic equivalent of one common share of the Issuer. Deferred Share Units will be settled in cash, common shares, or a combination thereof, at the sole discretion of the Issuer, and distributed to the reporting person upon such person's retirement and generally do not expire.

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.

For purposes of this disclosure, Canadian dollar amounts have been converted to U.S. dollars. CAN $226.20 = US $162.9771

Each restricted share unit represents a contingent right to receive one share of the Issuer's common shares. Subject to the reporting person's continued service with the Issuer, the award shall vest 50% immediately on the award date and 50% on the first anniversary of the award date.

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 18, 2022 and vest in four equal annual installments. The common shares are reported in Table 1.

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 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 18, 2022 and vest in four equal annual installments. The common shares are reported in Table 1.

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 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 of restricted share units into common shares or the Issuer. These restricted share units were previously vested and deferred under the Issuers Deferred Compensation Plan.

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 18, 2022 and vest in four equal annual installments. The common shares are reported in Table 1.

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 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 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 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 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 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.