SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): March 13, 2026

Waste Management, Inc.

(Exact Name of Registrant as Specified in Charter)

Registrant’s Telephone number, including area code: (713) 512-6200

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

As previously announced, Ms. Devina Rankin voluntarily resigned from her position of Executive Vice President and Chief Financial Officer of Waste Management, Inc. as of November 1, 2025, following her admirable career spanning 23 years of dedicated service, including nearly nine years as Chief Financial Officer.  She continued to serve as an executive advisor at her prior base salary through March 13, 2026 to ensure an effective transition of her responsibilities. On March 13, 2026, Ms. Rankin received a cash bonus of $1 million in recognition of the value delivered to stockholders as a result of her leadership in completing the orderly transition of the Chief Financial Officer role to her successor and her important contributions toward the integration of our Healthcare Solutions business, which amount is in addition to her annual cash incentive award payout earned for 2025.

The cash transition success bonus was paid pursuant to a letter agreement filed as an exhibit hereto and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit Index

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.