Company: WCN
Filing Date: 2025-05-30
Form Type: 424B5
Source: 0001104659-25-054854
Chunk: 72

Company: Waste Connections, Inc.
Filing Date: 2025-05-30
Form: 424B5
Chunk 72
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 When we offer to sell a particular series of debt securities, we will describe the specific terms of the series in a supplement to this prospectus.

Unless otherwise specified in the applicable prospectus supplement, our debt securities will be issued in one or more series either (i) pursuant to our existing indenture, dated November 16, 2018, between us and U.S. Bank National Association, as trustee, as supplemented by the First Supplemental Indenture, dated November 16, 2018, the Second Supplemental Indenture, dated April 16, 2019, the Third Supplemental Indenture, dated January 23, 2020, the Fourth Supplemental Indenture, dated March 13, 2020, the Fifth Supplemental Indenture, dated as of September 20, 2021, the Sixth Supplemental Indenture, dated as of March 9, 2022, the Seventh Supplemental Indenture, dated as of August 18, 2022, the Eighth Supplemental Indenture, dated as of February 21, 2024, and the Ninth Supplemental Indenture, dated as of June 13, 2024, (as amended, modified or supplemented from time to time the “existing indenture”), or (ii) pursuant to such other duly qualified indenture to be entered into between us and the trustee. Our existing indenture is attached as an exhibit and incorporated by reference into the registration statement of which this prospectus forms a part.

The following description, together with the additional information we include in any applicable prospectus supplement, summarizes certain general terms and provisions of the existing indenture and the debt securities that we may offer under this prospectus. The summary is not complete. You should read the applicable prospectus supplement (and any free writing prospectus that we may authorize to be provided to you) related to the series of debt securities being offered, as well as the existing indenture or other indenture

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that contain the terms of the debt securities. Capitalized terms used in the summary and not defined herein have the meanings specified in the existing indenture.

As used in this section only, “Waste Connections,” “we,” “our” or “us” refer to Waste Connections, Inc. excluding our subsidiaries, unless expressly stated or the context otherwise requires.

#### General
The terms of each series of debt securities will be established by or