Company: WCN
Filing Date: 2025-05-30
Form Type: 424B5
Source: 0001104659-25-054854
Chunk: 5

Company: Waste Connections, Inc.
Filing Date: 2025-05-30
Form: 424B5
Chunk 5
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.S. and Canada, as well as intermodal services for the movement of cargo and solid waste containers in the Pacific Northwest.

Our operating strategy seeks to improve financial returns and deliver superior shareholder value creation within the solid waste industry. We generally seek to avoid highly competitive, large urban markets and instead target markets where we can attain high market share either through exclusive contracts, vertical integration or asset positioning. In markets where waste collection services are provided under exclusive arrangements, or where waste disposal is municipally owned or funded or available at multiple municipal sources, we believe that controlling the waste stream by providing collection services under exclusive arrangements is often more important to our growth and profitability than owning or operating landfills. We also target niche markets, like non-hazardous E&P waste treatment, recovery and disposal services, with similar characteristics.

#### Recent Developments
On May 23, 2025, we entered into an amendment (the “First Amendment”) to our Revolving Credit Facility (as defined below). The First Amendment eliminated the 10 basis points SOFR credit spread adjustment under the Revolving Credit Facility, reducing the interest rate applicable thereunder.

#### Our Principal Administrative Offices
Our principal administrative offices are located at 3 Waterway Square Place, Suite 110, The Woodlands, Texas 77380. Our telephone number for our principal administrative offices is (832) 442-2200. Our website is www.wasteconnections.com. The information provided on our website is not incorporated into and does not form a part of this prospectus supplement or the accompanying base prospectus.

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TABLE OF CONTENTS

### THE OFFERING
The following summary describes the principal terms of the Notes but is not intended to be complete. It may not contain all of the information that is important to you. Certain terms and conditions described below are subject to important limitations and exceptions. For a more complete description of the terms of the Notes, see “Description of Notes” in this prospectus supplement and “Description of Debt Securities” in the accompanying base prospectus.

Issuer

Waste Connections, Inc.

Securities Offered

$500,000,000 aggregate principal amount of 5.250% Senior Notes due 2035.

Maturity Date

The Notes will mature on September 1, 2035.

Interest Rate

The Notes will bear interest at the rate of 5.250% per annum, accruing from the issue date of the Notes.

Interest Payment Dates

March 1 and September 1