WM

Represents restricted stock units granted pursuant to the 2023 Stock Incentive Plan. Restricted stock units vest 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Represents restricted stock units granted pursuant to the 2023 Stock Incentive Plan. Restricted stock units vest 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Settlement of restricted share award granted under Waste Management, Inc. 2023 Stock Incentive Plan.

Stock award granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan.

Stock award granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan.

Stock award granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan.

Stock award granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan.

Stock award granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan.

Stock award granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan.

Stock award granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan.

Stock award granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan.

Settlement of restricted share award granted under Waste Management, Inc. 2014 Stock Incentive Plan.

Sale of additional shares to cover personal federal income tax obligation pursuant to a Rule 10b5-1 Trading Plan.

This transaction was executed in multiple trades at prices ranging from $245.2100 to $245.2800. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Sale of additional shares to cover personal federal income tax obligation pursuant to a Rule 10b5-1 Trading Plan.

Sale of additional shares to cover personal federal income tax obligation pursuant to a Rule 10b5-1 Trading Plan.

Sale of additional shares to cover personal federal income tax obligation pursuant to a Rule 10b5-1 Trading Plan.

This transaction was executed in multiple trades at prices ranging from $243.3700 to $244.7375. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Settlement of restricted share award granted under Waste Management, Inc. 2014 Stock Incentive Plan.

Settlement of restricted share award granted under Waste Management, Inc. 2014 Stock Incentive Plan.

Settlement of restricted share award granted under Waste Management, Inc. 2014 Stock Incentive Plan.

The amount reported in Box 5 has been adjusted to correct an administrative error in the Form 4 filed on March 1, 2026, which inadvertently understated the number of shares of Common Stock withheld to satisfy certain tax obligations and, as a result, overstated the Reporting Person's beneficial ownership by 3 shares.

Settlement of restricted share award granted under Waste Management, Inc. 2014 Stock Incentive Plan.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Represents restricted stock units granted pursuant to the 2023 Stock Incentive Plan. Restricted stock units vest 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Stock option granted pursuant to Waste Management, Inc. 2023 Stock Incentive Plan. The stock option vests 34% on the first anniversary of the date of grant with 33% vesting on the 2nd and 3rd anniversary of the date of grant.

Sale of additional shares to cover personal federal income tax obligation pursuant to a Rule 10b5-1 Trading Plan.

Sale of additional shares to cover personal federal income tax obligation pursuant to a Rule 10b5-1 Trading Plan.

This transaction was executed in multiple trades at prices ranging from $241.1000 to $242.5700. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Settlement of restricted share award granted under Waste Management, Inc. 2023 Stock Incentive Plan.

Settlement of restricted share award granted under Waste Management, Inc. 2023 Stock Incentive Plan.

Sale of additional shares to cover personal federal income tax obligation pursuant to a Rule 10b5-1 Trading Plan.