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As filed with the Securities and Exchange Commission on October 24, 2024

Registration No. 333-

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-3

REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933

Waste Connections, Inc.

(Exact name of registrant as specified in its charter)

Ontario, Canada

(State or other jurisdiction of incorporation or organization)

98-1202763

(I.R.S. Employer Identification Number)

6220 Hwy 7, Suite 600
Woodbridge
Ontario L4H 4G3
Canada
(905) 532-7510
(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Patrick J. Shea
Executive Vice President, General Counsel and Secretary
Waste Connections, Inc.
3 Waterway Square Place, Suite 110
The Woodlands, TX 77380
(832) 442-2200
(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

David Taylor
Rob Evans
Locke Lord LLP
600 Travis Street, Suite 2800
Houston, Texas 77002
(713) 226-1200

Harinder S. Basra
Bennett Jones LLP
4500 Bankers Hall East
855 - 2nd Street S.W.
Calgary, Alberta, Canada T2P 4K7
(403) 298-3100

Approximate date of commencement of proposed sale to the public: At any time and from time to time after this registration statement becomes effective. If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Securities and Exchange Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☒

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

	Large accelerated filer ☒			Accelerated filer ☐			Non-accelerated filer ☐			Smaller reporting company ☐
										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 7(a)(2)(B) of the Securities Act. ☐

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PROSPECTUS

Waste Connections, Inc.

Debt Securities

We may from time to time offer, in one or more series, separately or together, and in amounts, at prices and on terms to be set forth in one or more supplements to this prospectus, debt securities, which may consist of debentures, notes, or other types of debt.

We refer to the debt securities registered hereunder collectively as the “securities” or “debt securities” in this prospectus. The specific terms of each series of the securities will be set forth in the applicable prospectus supplement and will include, where applicable, the specific title, aggregate principal amount, currency, form (which may be certificated or global), authorized denominations, maturity, rate (or manner of calculating the rate) and time of payment of interest, terms for redemption at our option or repayment at the holder’s option, terms for sinking fund payments, covenants, and any initial public offering price.

You should read this prospectus and any prospectus supplement carefully before you invest in any of our securities.

The securities may be offered directly by us through agents designated from time to time by us or to or through underwriters or dealers. If any agents, dealers, or underwriters are involved in the sale of any of the securities, their names, and any applicable purchase price, fee, commission, or discount arrangement between or among them will be set forth, or will be calculable from the information set forth, in the applicable prospectus supplement. See the sections entitled “Plan of Distribution” and “About This Prospectus” for more information.

Our common shares are listed on the New York Stock Exchange (“NYSE”) and the Toronto Stock Exchange (“TSX”) under the symbol “WCN”.

An investment in our securities involves risk. See “Risk Factors” beginning on page 3 of this prospectus and any similar section contained in the applicable prospectus supplement for a discussion of risk factors relevant to an investment in our securities.

This prospectus may not be used to offer or sell any securities unless accompanied by a prospectus supplement.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is October 24, 2024.

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	ABOUT THIS PROSPECTUS					1
	FORWARD-LOOKING STATEMENTS					1
	WASTE CONNECTIONS, INC.					2
	RISK FACTORS					3
	USE OF PROCEEDS					3
	DESCRIPTION OF DEBT SECURITIES					3
	GLOBAL SECURITIES					10
	PLAN OF DISTRIBUTION					12
	LEGAL MATTERS					12
	EXPERTS					12
	INCORPORATION OF CERTAIN INFORMATION BY REFERENCE					12
	WHERE YOU CAN FIND MORE INFORMATION					13

We have not authorized any agent, dealer, underwriter or other person to give any information or to make any representation other than those contained or incorporated by reference in this prospectus and any accompanying supplement to this prospectus. This prospectus and any accompanying supplement to this prospectus do not constitute an offer to sell or the solicitation of an offer to buy any securities other than the registered securities to which they relate, nor do this prospectus and any accompanying supplement to this prospectus constitute an offer to sell or the solicitation of an offer to buy securities in any jurisdiction to any person to whom it is unlawful to make such offer or solicitation in such jurisdiction. You should not assume that the information contained in this prospectus and any accompanying supplement to this prospectus is accurate on any date subsequent to the date set forth on the front of the document or that any information we have incorporated by reference is correct on any date subsequent to the date of the document incorporated by reference, even though this prospectus and any accompanying supplement to this prospectus is delivered or securities are sold on a later date.

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ABOUT THIS PROSPECTUS

This prospectus is part of an “automatic shelf” registration statement that we filed with the Securities and Exchange Commission (“SEC”), as a “well-known seasoned issuer” as defined in Rule 405 under the Securities Act of 1933, as amended (the “Securities Act”), using a “shelf” registration process. Under this shelf registration process, we may sell the securities described in this prospectus in one or more offerings. This prospectus sets forth certain terms of the securities that we may offer.

Each time we offer securities, we will attach a prospectus supplement to this prospectus. The prospectus supplement will contain the specific description of the terms of the offering. The prospectus supplement will supersede this prospectus to the extent it contains information that is different from, or that conflicts with, the information contained in this prospectus.

It is important for you to read and consider all information contained in this prospectus and the applicable prospectus supplement and any free writing prospectus that we may authorize to be provided to you and any pricing supplement or term sheet in making your investment decision. You should also read and consider the information contained in the documents identified under the heading “Where You Can Find More Information” in this prospectus.

Unless otherwise indicated or unless the context requires otherwise, all references in this prospectus to “we”, “us”, “our”, or the “Company” mean Waste Connections, Inc. and our consolidated subsidiaries.

FORWARD-LOOKING STATEMENTS

Certain statements included and incorporated by reference in this prospectus are “forward-looking” within the meaning of Section 27A of the Securities Act, and Section 21E of the Exchange Act, the Private Securities Litigation Reform Act of 1995 or in releases made by the SEC. Such forward-looking statements include, among others:

•

Statements regarding our landfills, including capacity, duration, special projects, demand for and pricing of recyclables, estimated closure and post-closure liabilities, landfill alternatives and related capital expenditures, operating expenses, leachate and the elevated temperature landfill (ETLF) event at the Chiquita Canyon Landfill;

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Discussions of competition, loss of contracts, price increases and additional exclusive and/or long-term collection service arrangements;

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Forecasts of cash flows necessary for operations and free cash flow to reduce leverage as well as our ability to draw on our credit facility and access the capital markets to refinance or expand;

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Statements regarding our ability to access capital resources or credit markets;

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Plans for, and the amounts of, certain capital expenditures for our existing and newly acquired properties and equipment;

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Statements regarding fuel, oil and natural gas demand, prices, and price volatility;

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Assessments of regulatory developments and potential changes in environmental, health, safety and tax laws and regulations; and

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Other statements on a variety of topics such as inflation, credit risk of customers, seasonality, labor/pension costs and labor union activity, employee retention costs, operational and safety risks, acquisitions, litigation developments and results, goodwill impairments, insurance costs and cybersecurity threats.

These statements can be identified by the use of forward-looking terminology such as “believes,” “expects,” “intends,” “may,” “might,” “will,” “could,” “should” or “anticipates,” or the negative thereof or comparable terminology, or by discussions of strategy.

Our business and operations are subject to a variety of risks and uncertainties and, consequently, actual results may differ materially from those projected by any forward-looking statements. Factors that could cause actual results to differ from those projected are discussed under the headings “Risk Factors” and

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“Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023 and our Quarterly Reports on Form 10-Q for each of the quarters ended March 31, 2024, June 30, 2024, and September 30, 2024, in each case, as may be updated or supplemented from time to time in our other filings with the SEC in the future that are incorporated herein and into any prospectus supplement by reference. There may be additional risks of which we are not presently aware or that we currently believe are immaterial which could have an adverse impact on our business. We make no commitment to revise or update any forward-looking statements to reflect events or circumstances that may change, unless required by applicable securities laws.

WASTE CONNECTIONS, INC.

We are an integrated solid waste services company that provides non-hazardous waste collection, transfer and disposal services, including by rail, along with resource recovery primarily through recycling and renewable fuels generation, in mostly exclusive and secondary markets across 46 states in the U.S. and six provinces in Canada. We also provide non-hazardous oil and natural gas exploration and production (“E&P”) waste treatment, recovery and disposal services in several basins across the U.S. and Canada, as well as intermodal services for the movement of cargo and solid waste containers in the Pacific Northwest.

Environmental, organizational and financial sustainability initiatives have been key components of our success since we were founded in 1997. We continue to grow and expand our efforts and disclosures regarding our progress as our industry and technology continue to evolve. To that end, we have committed $500 million to the advancement of long-term, aspirational ESG targets, which have been incorporated into executive compensation metrics. Our investments primarily focus on reducing emissions and emissions intensity, increasing resource recovery of both recyclable commodities and clean energy fuels, reducing reliance on off-site disposal for landfill leachate, further improving safety through reduced incidents and enhancing employee engagement through improved voluntary turnover and Servant Leadership scores. Our latest sustainability report can be found at www.wasteconnections.com/sustainability but does not constitute a part of this prospectus, and is not incorporated by reference herein.

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.

The solid waste industry is local and highly competitive in nature, requiring substantial labor and capital resources. We compete for collection accounts primarily on the basis of price and, to a lesser extent, the quality of service, and compete for landfill business on the basis of tipping fees, geographic location and quality of operations. The solid waste industry has been consolidating and continues to consolidate as a result of a number of factors, including the increasing costs and complexity associated with waste management operations and regulatory compliance. Many small independent operators and municipalities lack the capital resources, management, operating skills and technical expertise necessary to operate effectively in such an environment. The consolidation trend has caused solid waste companies to operate larger landfills that have complementary collection routes that can use company-owned disposal capacity. Controlling the point of transfer from haulers to landfills has become increasingly important as landfills close and disposal capacity moves farther from the collection markets it serves.

Generally, the most profitable operators within the solid waste industry are those companies that are vertically integrated or enter into long-term collection contracts. A vertically integrated operator will benefit from: (1) the internalization of waste by bringing waste to a company-owned landfill; (2) the ability to charge third-party haulers tipping fees at landfills or at transfer stations; and (3) the efficiencies gained by aggregating and processing waste at a transfer station prior to landfilling.

All references to “dollars” or “$” used herein refer to U.S. dollars, and all references to “CAD $” used herein refer to Canadian dollars, unless otherwise stated.

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Our principal administrative offices are located at 3 Waterway Square Place, Suite 110, The Woodlands, TX 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.

Our common shares are listed on the NYSE and the TSX under the symbol “WCN”. For additional information concerning us, please see the sections titled “Incorporation of Certain Information by Reference” and “Where You Can Find More Information” of this prospectus.

RISK FACTORS

You should carefully consider any specific risks set forth or referenced under the caption “Risk Factors” in the applicable prospectus supplement and under the caption “Risk Factors” in our most recent Annual Report on Form 10-K, incorporated into this prospectus by reference, as updated by our subsequent filings under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). You should consider carefully those risk factors together with all of the other information included and incorporated by reference in this prospectus before you decide to purchase our securities.

USE OF PROCEEDS

We intend to use the net proceeds from the sale of the securities offered by us under this prospectus for general corporate purposes, including repaying, refinancing or repurchasing debt, funding acquisitions of additional assets or businesses, capital expenditures and increasing our working capital. When a particular series of securities is offered, the prospectus supplement relating thereto will set forth our intended use for the net proceeds we receive from the sale of the securities. Pending the application of the net proceeds, we may invest the proceeds in short-term, interest-bearing instruments or other investment-grade securities. We have not determined the amounts we plan to spend on the areas listed above or the timing of these expenditures. As a result, our management will have broad discretion to allocate the net proceeds of any offering under this prospectus.

DESCRIPTION OF DEBT SECURITIES

We may offer debt securities that may be senior, subordinated or junior subordinated. The senior debt securities will rank equally with any other unsubordinated debt that we may have and may be secured or unsecured. The subordinated debt securities will be subordinate and junior in right of payment, to the extent and in the manner described in the instrument governing the debt, to all or some portion of our senior indebtedness. 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 pursuant to a resolution of our board of directors and set forth or determined in the manner provided in a resolution of our board of directors, in an officer’s certificate or by a supplemental indenture. The particular terms of each series of debt securities will be described in a prospectus supplement relating to such series (including any pricing supplement or term sheet).

We can issue an unlimited amount of debt securities under the existing indenture that may be in one or more series with the same or various maturities, at par, at a premium, or at a discount. We will set forth in a prospectus supplement (including any pricing supplement or term sheet) relating to any series of debt securities being offered, the aggregate principal amount and the following terms of the debt securities, if applicable:

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the title and ranking of the debt securities (including the terms of any subordination provisions);

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the price or prices (expressed as a percentage of the principal amount) at which we will sell the debt securities;

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amount of discount or premium, if any, with which the debt securities will be issued, including whether the debt securities will be issued as “original issue discount” securities;

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any limit on the aggregate principal amount of the debt securities;

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maturity date(s);

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the rate or rates (which may be fixed or variable) per annum or the method used to determine the rate or rates (including any commodity, commodity index, stock exchange index or financial index) at which the debt securities will bear interest, the date or dates from which interest will accrue, the date or dates on which interest will commence and be payable and any regular record date for the interest payable on any interest payment date;

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the place or places where principal of, and interest, if any, on the debt securities will be payable (and the method of such payment), where the securities of such series may be surrendered for registration of transfer or exchange, and where notices and demands to us in respect of the debt securities may be delivered;

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the period or periods within which, the price or prices at which and the terms and conditions upon which we may redeem the debt securities;

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any obligation we have to redeem, repurchase or repay the debt securities pursuant to any sinking fund or analogous provisions or at the option of a holder of debt securities and the period or periods within which, the price or prices at which and in the terms and conditions upon which securities of the series shall be redeemed or purchased, in whole or in part, pursuant to such obligation;

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the dates on which and the price or prices at which we will repurchase debt securities at the option of the holders of debt securities and other detailed terms and provisions of these repurchase obligations;

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the denominations in which the debt securities will be issued, if other than denominations of $1,000 and any integral multiple thereof;

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the forms of the debt securities and whether the debt securities will be issuable as global debt securities;

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the portion of principal amount of the debt securities payable upon declaration of acceleration of the maturity date, if other than the principal amount;

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the currency of denomination of the debt securities, which may be United States Dollars or any foreign currency, and if such currency of denomination is a composite currency, the agency or organization, if any, responsible for overseeing such composite currency;

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the designation of the currency, currencies or currency units in which payment of principal of, premium and interest on the debt securities will be made;

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if payments of principal of, premium or interest on the debt securities will be made in one or more currencies or currency units other than that or those in which the debt securities are denominated, the manner in which the exchange rate with respect to these payments will be determined;

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the manner in which the amounts of payment of principal of, premium, if any, or interest on the debt securities will be determined, if these amounts may be determined by reference to an index based on a currency or currencies other than that in which the debt securities are denominated or designated to be payable or by reference to a commodity, commodity index, stock exchange index or financial index;

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any provisions relating to any security provided for the debt securities;

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any addition to, deletion of or change in the Events of Default (as defined herein) described in this prospectus or in the existing indenture with respect to the debt securities and any change in the acceleration provisions described in this prospectus or in the existing indenture with respect to the debt securities;

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any addition to, deletion of or change in the covenants described in this prospectus or in the existing indenture with respect to the debt securities;

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any depositaries, interest rate calculation agents, exchange rate calculation agents or other agents with respect to the debt securities;

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any provisions relating to exchange of any debt securities including exchange price and period, the events requiring an adjustment of the exchange price and provisions affecting exchange if the debt securities are redeemed; and

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any other terms of the debt securities, which may supplement, modify or delete any provision of the existing indenture as it applies to that series, including any terms that may be required under applicable law or regulations or advisable in connection with the marketing of the securities.

We may issue debt securities that provide for an amount less than their stated principal amount to be due and payable upon declaration of acceleration of their maturity pursuant to the terms of the existing indenture. We will provide you with information on the federal income tax considerations and other special considerations applicable to any of these debt securities in the applicable prospectus supplement.

If we denominate the purchase price of any of the debt securities in a foreign currency or currencies or a foreign currency unit or units, or if the principal of and any premium and interest on any series of debt securities is payable in a foreign currency or currencies or a foreign currency unit or units, we will provide you with information on the restrictions, elections, general tax considerations, specific terms and other information with respect to that issue of debt securities and such foreign currency or currencies or foreign currency unit or units in the applicable prospectus supplement.

Transfer and Exchange

Each debt security will be represented by either one or more global securities registered in the name of The Depository Trust Company (the “Depositary”), or a nominee of the Depositary (we will refer to debt securities represented by a global debt security as “book-entry debt securities”), or a certificate issued in definitive registered form (we will refer to debt securities represented by a certificated security as “certificated debt securities”) as set forth in the applicable prospectus supplement. Except as set forth under the heading “Global Securities” below, book-entry debt securities will not be issuable in certificated form.

Certificated Debt Securities. You may transfer or exchange certificated debt securities at any office we maintain for this purpose in accordance with the terms of the existing indenture. No service charge will be made for any transfer or exchange of certificated debt securities, but we may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection with a transfer or exchange.

You may effect the transfer of certificated debt securities and the right to receive the principal of, premium and interest on certificated debt securities only by surrendering the certificate representing those certificated

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debt securities and either reissuance by us or the trustee of the certificate to the new holder or the issuance by us or the trustee of a new certificate to the new holder.

Global Debt Securities and Book-Entry System. Each global debt security representing book-entry debt securities will be deposited with, or on behalf of, the Depositary, and registered in the name of the Depositary or a nominee of the Depositary. Please see “Global Securities.”

Covenants

We will set forth in the applicable prospectus supplement any restrictive covenants applicable to any issue of debt securities.

No Protection in the Event of a Change of Control

Unless otherwise provided in the applicable supplemental indenture and the related prospectus supplement, the debt securities will not contain provisions which afford holders of the debt securities protection in the event we have a change in control or in the event of a highly leveraged transaction (whether or not such transaction results in a change in control) which could adversely affect holders of debt securities.

Consolidation, Merger, Amalgamation and Sale of Assets

We may not consolidate with or merge or amalgamate with or into, or convey, transfer or lease all or substantially all of our properties and assets to any person (a “successor person”) unless:

•

we are the surviving corporation or the successor person (if other than Waste Connections) is a corporation, partnership, limited liability company or trust organized and validly existing under the laws of Canada or any province or territory thereof or any U.S. domestic jurisdiction and assumes by operation of law or by supplemental indenture our obligations on the debt securities and under the existing indenture; and

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immediately after giving effect to the transaction, no Default or Event of Default, shall have occurred and be continuing;

Notwithstanding the above, any of our subsidiaries may consolidate with, merge or amalgamate with or into, or transfer or lease all or part of its properties or assets to, us or any of our wholly-owned subsidiaries.

Events of Default

“Event of Default” means with respect to any series of debt securities, any of the following:

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default in the payment of any interest upon any debt security of that series when it becomes due and payable, and continuance of such default for a period of 30 days (unless the entire amount of the payment is deposited by us with the trustee or with a paying agent prior to 11:00 a.m., New York City time, on the 30th day of such period);

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default in the payment of principal of any security of that series at its maturity;

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default in the performance or breach of any other covenant or warranty by us in the existing indenture (other than a covenant or warranty that has been included in the existing indenture solely for the benefit of a series of debt securities other than that series), which default continues uncured for a period of 60 days after we receive written notice from the trustee or we and the trustee receive written notice from the holders of not less than 25% in principal amount of the outstanding debt securities of that series as provided in the existing indenture;

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certain voluntary or involuntary events of bankruptcy, insolvency or reorganization by us; or

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any other Event of Default provided with respect to debt securities of that series that is described in the applicable prospectus supplement.

No Event of Default with respect to a particular series of debt securities (except as to certain events of bankruptcy, insolvency or reorganization) necessarily constitutes an Event of Default with respect to any

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other series of debt securities. The occurrence of certain Events of Default or an acceleration under the existing indenture may constitute an event of default under certain indebtedness of ours or our subsidiaries outstanding from time to time.

If an Event of Default with respect to debt securities of any series at the time outstanding occurs and is continuing, then the trustee or the holders of not less than 25% in principal amount of the outstanding debt securities of that series may, by a notice in writing to us (and to the trustee if given by the holders), declare to be due and payable immediately the principal of (or, if the debt securities of that series are discount securities, that portion of the principal amount as may be specified in the terms of that series) and accrued and unpaid interest, if any, on all debt securities of that series. In the case of an Event of Default resulting from certain events of bankruptcy, insolvency or reorganization, the principal (or such specified amount) of and accrued and unpaid interest, if any, on all outstanding debt securities will become and be immediately due and payable without any declaration or other act on the part of the trustee or any holder of outstanding debt securities. At any time after a declaration of acceleration with respect to debt securities of any series has been made, but before a judgment or decree for payment of the money due has been obtained by the trustee, the holders of a majority in principal amount of the outstanding debt securities of that series may rescind and annul the acceleration if all Events of Default, other than the non-payment of accelerated principal and interest, if any, with respect to debt securities of that series, have been cured or waived as provided in the existing indenture. We refer you to the prospectus supplement relating to any series of debt securities that are discount securities for the particular provisions relating to acceleration of a portion of the principal amount of such discount securities upon the occurrence of an Event of Default.

The existing indenture provides that the trustee will be under no obligation to exercise any of its rights or powers under the existing indenture unless the trustee receives indemnity satisfactory to it against any cost, liability or expense which might be incurred by it in exercising such right of power. Subject to certain rights of the trustee, the holders of a majority in principal amount of the outstanding debt securities of any series will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee or exercising any trust or power conferred on the trustee with respect to the debt securities of that series.

No holder of any debt security of any series will have any right to institute any proceeding, judicial or otherwise, with respect to the existing indenture or for the appointment of a receiver or trustee, or for any remedy under the existing indenture, unless:

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that holder has previously given to the trustee written notice of a continuing Event of Default with respect to debt securities of that series; and

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the holders of not less than 25% in principal amount of the outstanding debt securities of that series have made written request, and offered reasonable indemnity or security, to the trustee to institute the proceeding as trustee, and the trustee has not received from the holders of not less than a majority in principal amount of the outstanding debt securities of that series a direction inconsistent with that request and has failed to institute the proceeding within 60 days.

Notwithstanding any other provision in the existing indenture, the holder of any debt security will have an absolute and unconditional right to receive payment of the principal of, premium and any interest on that debt security on or after the due dates expressed in that debt security and to institute suit for the enforcement of payment.

The existing indenture requires us, within 120 days after the end of our fiscal year, to furnish to the trustee a statement as to compliance with the existing indenture. If a Default or Event of Default occurs and is continuing with respect to the securities of any series and if it is known to a responsible officer of the trustee, the trustee shall mail to each holder of the securities of that series notice of a Default or Event of Default within 90 days after it occurs. The existing indenture provides that the trustee may withhold notice to the holders of debt securities of any series of any Default or Event of Default (except in payment on any debt securities of that series) with respect to debt securities of that series if the trustee determines in good faith that withholding notice is in the interest of the holders of those debt securities.

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Modification and Waiver

We and the trustee may modify and amend the existing indenture or the debt securities of any series without the consent of any holder of any debt security:

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to cure any ambiguity, defect or inconsistency;

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to comply with covenants in the existing indenture described above under the heading “Consolidation, Merger, Amalgamation and Sale of Assets”;

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to provide for uncertificated securities in addition to or in place of certificated securities;

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to make any change that does not adversely affect the rights of any holder of debt securities in any material respect;

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to provide for the issuance of and establish the form and terms and conditions of debt securities of any series as permitted by the existing indenture;

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to effect the appointment of a successor trustee with respect to the debt securities of any series and to add to or change any of the provisions of the existing indenture to provide for or facilitate administration by more than one trustee;

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to conform the existing indenture or the debt securities of any series to the description thereof in this prospectus and any applicable prospectus supplement; or

•

to comply with requirements of the SEC in order to effect or maintain the qualification of the existing indenture under the Trust Indenture Act.

We may also modify and amend the existing indenture with the consent of the holders of at least a majority in principal amount of the outstanding debt securities of each series affected by the modifications or amendments. We may not make any modification or amendment without the consent of the holders of each affected debt security then outstanding if that amendment will:

•

reduce the amount of debt securities whose holders must consent to an amendment, supplement or waiver;

•

reduce the rate of or extend the time for payment of interest (including default interest) on any debt security;

•

reduce the principal of or premium on or change the fixed maturity of any debt security or reduce the amount of, or postpone the date fixed for, the payment of any sinking fund or analogous obligation with respect to any series of debt securities;

•

reduce the principal amount of discount securities payable upon acceleration of maturity;

•

waive a default in the payment of the principal of, premium or interest on any debt security (except a rescission of acceleration of the debt securities of any series by the holders of at least a majority in aggregate principal amount of the then outstanding debt securities of that series and a waiver of the payment default that resulted from such acceleration);

•

make the principal of or premium or interest on any debt security payable in currency other than that stated in the debt security;

•

make any change to certain provisions of the existing indenture relating to, among other things, the right of holders of debt securities to receive payment of the principal of, premium and interest on those debt securities and to institute suit for the enforcement of any such payment and to waivers or amendments; or

•

waive a redemption payment with respect to any debt security.

Except for certain specified provisions, the holders of at least a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all debt securities of that series waive our compliance with provisions of the existing indenture. The holders of a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all the debt securities of such series waive any past default under the existing indenture with respect to that series and its consequences,

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except a default in the payment of the principal of, premium or any interest on any debt security of that series; provided, however, that the holders of a majority in principal amount of the outstanding debt securities of any series may rescind an acceleration and its consequences, including any related payment default that resulted from the acceleration.

Defeasance of Debt Securities and Certain Covenants in Certain Circumstances

Legal Defeasance. The existing indenture provides that, unless otherwise provided by the terms of the applicable series of debt securities, we may be discharged from any and all obligations in respect of the debt securities of any series (subject to certain exceptions). We will be so discharged upon the deposit with the trustee, in trust, of money and/or U.S. government obligations or, in the case of debt securities denominated in a single currency other than U.S. Dollars, government obligations of the government that issued or caused to be issued such currency, that, through the payment of interest and principal in accordance with their terms, will provide money in an amount sufficient in the opinion of a nationally recognized firm of independent public accountants or investment bank to pay and discharge each installment of principal, premium and interest on and any mandatory sinking fund payments in respect of the debt securities of that series on the stated maturity of those payments in accordance with the terms of the existing indenture and those debt securities.

This discharge may occur only if, among other things, we have delivered to the trustee an opinion of counsel stating that we have received from, or there has been published by, the United States Internal Revenue Service a ruling or, since the date of execution of the existing indenture, there has been a change in the applicable United States federal income tax law, in either case to the effect that, and based thereon such opinion shall confirm that, the holders of the debt securities of that series will not recognize income, gain or loss for United States federal income tax purposes as a result of the deposit, defeasance and discharge and will be subject to United States federal income tax on the same amounts and in the same manner and at the same times as would have been the case if the deposit, defeasance and discharge had not occurred.

Defeasance of Certain Covenants. The existing indenture provides that, unless otherwise provided by the terms of the applicable series of debt securities, upon compliance with certain conditions:

•

we may omit to comply with the covenant described under the heading “Consolidation, Merger, Amalgamation and Sale of Assets” and certain other covenants set forth in the existing indenture, as well as any additional covenants which may be set forth in the applicable prospectus supplement; and

•

any omission to comply with those covenants will not constitute a Default or an Event of Default with respect to the debt securities of that series (“covenant defeasance”).

The conditions include:

•

depositing with the trustee money and/or U.S. government obligations or, in the case of debt securities denominated in a single currency other than U.S. Dollars, government obligations of the government that issued or caused to be issued such currency, that, through the payment of interest and principal in accordance with their terms, will provide money in an amount sufficient in the opinion of a nationally recognized firm of independent public accountants or investment bank to pay and discharge each installment of principal of, premium and interest on and any mandatory sinking fund payments in respect of the debt securities of that series on the stated maturity of those payments in accordance with the terms of the existing indenture and those debt securities; and

•

delivering to the trustee an opinion of counsel to the effect that the holders of the debt securities of that series will not recognize income, gain or loss for United States federal income tax purposes as a result of the deposit and related covenant defeasance and will be subject to United States federal income tax on the same amounts and in the same manner and at the same times as would have been the case if the deposit and related covenant defeasance had not occurred.

Covenant Defeasance and Events of Default. In the event we exercise our option to effect covenant defeasance with respect to any series of debt securities and the debt securities of that series are declared due and payable because of the occurrence of any Event of Default, the amount of money and/or U.S. government obligations or foreign government obligations on deposit with the trustee will be sufficient to pay amounts due on the debt securities of that series at the time of their stated maturity but may not be sufficient to pay

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amounts due on the debt securities of that series at the time of the acceleration resulting from the Event of Default. However, we shall remain liable for those payments.

Governing Law

The existing indenture and the debt securities, including any claim or controversy arising out of or relating to the existing indenture or the securities, will be governed by the laws of the State of New York without regard to conflict of law principles that would result in the application of any law other than the laws of the State of New York.

GLOBAL SECURITIES

Book-Entry, Delivery and Form

Unless we indicate differently in a prospectus supplement or free writing prospectus, the securities initially will be issued in book-entry form and represented by one or more global notes or global securities, or, collectively, global securities. The global securities will be deposited with, or on behalf of, The Depository Trust Company, New York, New York, as depositary (“DTC”), and registered in the name of Cede & Co., the nominee of DTC. Unless and until it is exchanged for individual certificates evidencing securities under the limited circumstances described below, a global security may not be transferred except as a whole by the depositary to its nominee or by the nominee to the depositary, or by the depositary or its nominee to a successor depositary or to a nominee of the successor depositary.

DTC has advised us that it is:

•

a limited-purpose trust company organized under the New York Banking Law;

•

a “banking organization” within the meaning of the New York Banking Law;

•

a member of the Federal Reserve System;

•

a “clearing corporation” within the meaning of the New York Uniform Commercial Code; and

•

a “clearing agency” registered pursuant to the provisions of Section 17A of the Exchange Act.

DTC holds securities that its participants deposit with DTC. DTC also facilitates the settlement among its participants of securities transactions, such as transfers and pledges, in deposited securities through electronic computerized book-entry changes in participants’ accounts, thereby eliminating the need for physical movement of securities certificates. “Direct participants” in DTC include securities brokers and dealers, including underwriters, banks, trust companies, clearing corporations and other organizations. DTC is a wholly-owned subsidiary of The Depository Trust & Clearing Corporation (“DTCC”). DTCC is the holding company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation, all of which are registered clearing agencies. DTCC is owned by the users of its regulated subsidiaries. Access to the DTC system is also available to others, which we sometimes refer to as indirect participants, that clear through or maintain a custodial relationship with a direct participant, either directly or indirectly. The rules applicable to DTC and its participants are on file with the SEC.

Purchases of securities under the DTC system must be made by or through direct participants, which will receive a credit for the securities on DTC’s records. The ownership interest of the actual purchaser of a security, which we sometimes refer to as a beneficial owner, is in turn recorded on the direct and indirect participants’ records. Beneficial owners of securities will not receive written confirmation from DTC of their purchases. However, beneficial owners are expected to receive written confirmations providing details of their transactions, as well as periodic statements of their holdings, from the direct or indirect participants through which they purchased securities. Transfers of ownership interests in global securities are to be accomplished by entries made on the books of participants acting on behalf of beneficial owners. Beneficial owners will not receive certificates representing their ownership interests in the global securities, except under the limited circumstances described below.

To facilitate subsequent transfers, all global securities deposited by direct participants with DTC will be registered in the name of DTC’s partnership nominee, Cede & Co., or such other name as may be requested by

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an authorized representative of DTC. The deposit of securities with DTC and their registration in the name of Cede & Co. or such other nominee will not change the beneficial ownership of the securities. DTC has no knowledge of the actual beneficial owners of the securities. DTC’s records reflect only the identity of the direct participants to whose accounts the securities are credited, which may or may not be the beneficial owners. The participants are responsible for keeping account of their holdings on behalf of their customers.

So long as the securities are in book-entry form, you will receive payments and may transfer securities only through the facilities of DTC and its direct and indirect participants. We will maintain an office or agency in the location specified in the prospectus supplement for the applicable securities, where notices and demands in respect of the securities and the existing indenture may be delivered to us and where certificated securities may be surrendered for payment, registration of transfer or exchange.

Conveyance of notices and other communications by DTC to direct participants, by direct participants to indirect participants and by direct participants and indirect participants to beneficial owners will be governed by arrangements among them, subject to any legal requirements in effect from time to time.

Redemption notices will be sent to DTC. If less than all of the securities of a particular series are being redeemed, DTC’s practice is to determine by lot the amount of the interest of each direct participant in the securities of such series to be redeemed.

Neither DTC nor Cede & Co. (or such other DTC nominee) will consent or vote with respect to the securities. Under its usual procedures, DTC will mail an omnibus proxy to us as soon as possible after the record date. The omnibus proxy assigns the consenting or voting rights of Cede & Co. to those direct participants to whose accounts the securities of such series are credited on the record date, identified in a listing attached to the omnibus proxy.

So long as securities are in book-entry form, we will make payments on those securities to DTC or its nominee, as the registered owner of such securities, by wire transfer of immediately available funds. If securities are issued in definitive certificated form under the limited circumstances described below, we will have the option of making payments by check mailed to the addresses of the persons entitled to payment or by wire transfer to bank accounts in the United States designated in writing to the applicable trustee or other designated party at least 15 days before the applicable payment date by the persons entitled to payment.

Redemption proceeds, distributions and dividend payments on the securities will be made to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC. DTC’s practice is to credit direct participants’ accounts upon DTC’s receipt of funds and corresponding detail information from us on the payment date in accordance with their respective holdings shown on DTC records. Payments by participants to beneficial owners will be governed by standing instructions and customary practices, as is the case with securities held for the account of customers in bearer form or registered in “street name.” Those payments will be the responsibility of participants and not of DTC or us, subject to any statutory or regulatory requirements in effect from time to time. Payment of redemption proceeds, distributions and dividend payments to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC, is our responsibility, disbursement of payments to direct participants is the responsibility of DTC, and disbursement of payments to the beneficial owners is the responsibility of direct and indirect participants.

Except under the limited circumstances described below, purchasers of securities will not be entitled to have securities registered in their names and will not receive physical delivery of securities. Accordingly, each beneficial owner must rely on the procedures of DTC and its participants to exercise any rights under the securities and the existing indenture.

The laws of some jurisdictions may require that some purchasers of securities take physical delivery of securities in definitive form. Those laws may impair the ability to transfer or pledge beneficial interests in securities.

DTC may discontinue providing its services as securities depository with respect to the securities at any time by giving reasonable notice to us. Under such circumstances, in the event that a successor depository is not obtained, securities certificates are required to be printed and delivered.

As noted above, beneficial owners of a particular series of securities generally will not receive certificates representing their ownership interests in those securities. However, if:

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•

DTC notifies us that it is unwilling or unable to continue as a depositary for the global security or securities representing such series of securities or if DTC ceases to be a clearing agency registered under the Exchange Act at a time when it is required to be registered and a successor depositary is not appointed within 90 days of the notification to us or of our becoming aware of DTC’s ceasing to be so registered, as the case may be;

•

we determine, in our sole discretion, not to have such securities represented by one or more global securities; or

•

an Event of Default has occurred and is continuing with respect to such series of securities, upon request,

we will prepare and deliver certificates for such securities in exchange for beneficial interests in the global securities. Any beneficial interest in a global security that is exchangeable under the circumstances described in the preceding sentence will be exchangeable for securities in definitive certificated form registered in the names that the depositary directs. It is expected that these directions will be based upon directions received by the depositary from its participants with respect to ownership of beneficial interests in the global securities.

We have obtained the information in this section and elsewhere in this prospectus concerning DTC and DTC’s book-entry system from sources that are believed to be reliable, but we take no responsibility for the accuracy of this information.

PLAN OF DISTRIBUTION

We may sell the securities offered pursuant to any applicable prospectus supplement, directly to one or more purchasers, through dealers, agents, or underwriters or through a combination of any of these methods of sale. We may sell the securities offered pursuant to any applicable prospectus supplement on a negotiated or competitive bid basis through underwriters or dealers or directly to other purchasers or through agents. We will name any underwriter, dealer, or agent involved in the offer and sale of the securities in the applicable prospectus supplement. We reserve the right to sell the securities directly to investors on our own behalf in those jurisdictions where and in such manner as we are authorized to do so.

Certain of the underwriters, dealers, or agents and their respective associates may be customers of, and/or engage in transactions with, and perform services for us in the ordinary course of business.

LEGAL MATTERS

Certain legal matters relating to the securities offered hereby are being passed upon for us by Locke Lord LLP, Houston, Texas. The validity of issuance of the offered securities and other matters arising under Canadian law are being passed upon for us by Bennett Jones LLP, Calgary, Alberta. Any underwriters will be advised about other matters relating to any offering by their own legal counsel that we will name in the applicable prospectus supplement.

EXPERTS

The audited financial statements and management’s assessment of the effectiveness of internal control over financial reporting incorporated by reference in this prospectus and elsewhere in the registration statement have been so incorporated by reference in reliance upon the reports of Grant Thornton LLP, independent registered public accountants, upon the authority of said firm as experts in accounting and auditing.

INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

The SEC allows us to “incorporate by reference” into this prospectus the information we file with the SEC, which means that we can disclose important business, financial and other information to you by referring you to other documents separately filed with the SEC. The information incorporated by reference is considered to be part of this prospectus from the date we file that document, and subsequent information that we file with the SEC will automatically update and, where applicable, supersede that information. Any statement contained in a previously filed document incorporated by reference will be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained in this prospectus modifies or replaces that statement.

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We incorporate by reference the following documents or information filed with the SEC and any subsequent filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act prior to completion of the offering of the securities described in this prospectus (other than, in each case, documents or information deemed to have been furnished and not filed in accordance with SEC rules):

•

Our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed on February 14, 2024;

•

Our Quarterly Reports on Form 10-Q for the quarter ended March 31, 2024, filed on April 25, 2024, the quarter ended June 30, 2024, filed on July 25, 2024, and the quarter ended September 30, 2024, filed on October 24, 2024;

•

The portions of our Definitive Management Information Circular and Proxy Statement on Schedule 14A, filed with the SEC on April 4, 2024, that are incorporated by reference into Part III of our Annual Report on Form 10-K for the fiscal year ended December 31, 2023; and

•

Our Current Reports on Form 8-K filed on February 16, 2024, February 20, 2024, February 21, 2024, February 29, 2024, May 17, 2024, June 12, 2024, June 13, 2024, and July 29, 2024.

We will furnish without charge to you, upon written or oral request, a copy of any or all of the documents incorporated by reference, including exhibits to these documents. You should direct any requests for documents to:

Waste Connections, Inc.
Attn: Investor Relations
3 Waterway Square Place, Suite 110
The Woodlands, TX 77380
(832) 442-2200

WHERE YOU CAN FIND MORE INFORMATION

We are subject to the information reporting requirements of the Exchange Act, and, in accordance with these requirements, we are required to file Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act. In addition, we are required to file proxy statements pursuant to Section 14 of the Exchange Act. The reports and other information filed by us with the SEC are available to the public at the SEC’s website at www.sec.gov. In addition, you may obtain these materials on our website at www.wasteconnections.com. Information contained on our website is not and should not be deemed a part of this prospectus or any other report or filing filed with the SEC.

We have filed with the SEC a registration statement on Form S-3, including all amendments, exhibits, annexes and schedules thereto and all documents incorporated by reference therein, pursuant to the Securities Act, and the rules and regulations promulgated thereunder, with respect to the securities offered hereby. This prospectus, which constitutes a part of the registration statement, does not contain all the information contained in the registration statement, parts of which are omitted in accordance with the rules and regulations of the SEC. The full registration statement may be obtained from the SEC or us as provided above.

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PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.

The following table itemizes the expenses incurred by the registrant in connection with the issuance and registration of the securities registered hereunder.

SEC registration fee	$	(1)
FINRA filing fee	$	(2)
Printing and engraving expenses	$	(2)
Legal fees and expenses	$	(2)
Accounting fees and expenses	$	(2)
Blue Sky fees and expenses	$	(2)
Trustee fees and expenses	$	(2)
Fees of rating agencies	$	(2)
Miscellaneous fees and expenses	$	(2)
Total	$	(2)

(1)

Under Rules 456(b) and 457(r) under the Securities Act, the SEC registration fee will be paid at the time of any particular offering of securities under the registration statement, and is therefore not currently determinable.

(2)

These fees are calculated based on the securities offered and the number of issuances and accordingly cannot be estimated at this time.

Item 15. Indemnification of Directors and Officers.

Under the Business Corporations Act (Ontario) (the “OBCA”), a corporation may indemnify a director or officer, a former director or officer or another individual who acts or acted at the corporation’s request as a director or officer, or an individual acting in a similar capacity, of another entity, against all costs, charges and expenses, including an amount paid to settle an action or satisfy a judgment, reasonably incurred by the individual in respect of any civil, criminal, administrative, investigative or other proceeding in which the individual is involved because of that association with the corporation or other entity. We may not indemnify an individual under the OBCA unless the individual acted honestly and in good faith with a view to the best interests of the Company, or, as the case may be, to the best interests of another entity for which the individual acted as director or officer or in a similar capacity at our request and in the case of a criminal or administrative action or proceeding that is enforced by a monetary penalty, the individual had reasonable grounds for believing that the individual’s conduct was lawful. The indemnification may be made in connection with a derivative action only with court approval. The aforementioned individuals are entitled to indemnification from the Company in respect of all costs, charges and expenses, including an amount paid to settle an action or satisfy a judgment, reasonably incurred by the individual in connection with the defense of any civil, criminal, administrative, investigative or other proceeding if they were not judged by a court or other competent authority to have committed any fault or omitted to do anything that the individual ought to have done and acted in accordance with the conditions set out above. We may advance money to the individual for the costs, charges and expenses of a proceeding, and in the case of a derivative action, only with court approval; however, the individual must repay the advanced money if the individual does not fulfill the conditions set out above.

Our by-law requires us to indemnify our directors and officers, former directors or officers or other persons who act or acted at our request as a director or officer of a body corporate of which we are or were a shareholder or creditor, and the heirs and legal representatives of such person to the extent permitted by the OBCA. As permitted by the OBCA, our by-law provides that we may purchase and maintain insurance for the benefit of any person referred to in the preceding sentence.

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	Exhibit Number			Description
	23.3			Consent of Grant Thornton LLP.
	24.1			Power of Attorney (included on the signature page to this registration statement).
	25.1			Statement of Eligibility of Trustee on Form T-1.
	107			Filing Fee Table.

To be filed by amendment or as an exhibit to a report filed under the Exchange Act and incorporated herein by reference.

Item 17. Undertakings

(a) The undersigned registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by section 10(a)(3) of the Securities Act of 1933;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the SEC pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement.

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

Provided, however, that paragraphs (a)(1)(i), (a)(1)(ii) and (a)(1)(iii) of this section do not apply if the registration statement is on Form S-3 or Form F-3 and the information required to be included in a post‑effective amendment by those paragraphs is contained in reports filed with or furnished to the SEC by the registrant pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is part of the registration statement.

(2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(4) That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

(i) Each prospectus filed by the registrant pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

(ii) Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5), or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii), or (x) for the purpose of providing the information required by section 10(a) of the Securities Act of 1933 shall be deemed to be part of and included in the registration statement

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as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which that prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date;

(5) That, for the purpose of determining liability of the registrant under the Securities Act of 1933 to any purchaser in the initial distribution of the securities: The undersigned registrant undertakes that in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i) Any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424;

(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

(iv) Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

(b) The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant’s annual report pursuant to section 13(a) or section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(c) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the SEC such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

(d) The undersigned registrant hereby undertakes to file an application for the purpose of determining the eligibility of the trustee to act under subsection (a) of section 310 of the Trust Indenture Act (“Act”) in accordance with the rules and regulations prescribed by the Commission under section 305(b)(2) of the Act.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in The Woodlands, State of Texas, on this 24th day of October, 2024.

Waste Connections, Inc.

By:

/s/ Ronald J. Mittelstaedt

Name: Ronald J. Mittelstaedt
Title: President and Chief Executive Officer

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENT, that each person whose signature appears below constitutes and appoints Ronald J. Mittelstaedt, Mary Anne Whitney and Patrick J. Shea, and each or any of them, his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this registration statement and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, or his or her substitute or their substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated:

/s/ Ronald J. Mittelstaedt Ronald J. Mittelstaedt	President and Chief Executive Officer and Director (principal executive officer)	October 24, 2024
/s/ Mary Anne Whitney Mary Anne Whitney	Executive Vice President and Chief Financial Officer (principal financial officer)	October 24, 2024
/s/ Matthew S. Black Matthew S. Black	Senior Vice President — Chief Accounting Officer (principal accounting officer)	October 24, 2024
/s/ Andrew E. Bertone Andrea E. Bertone	Director	October 24, 2024
/s/ Edwared E. Guillet Edward E. Guillet	Director	October 24, 2024
/s/ Michael W. Harlan Michael W. Harlan	Director	October 24, 2024
/s/ Elise L. Jordan Elise L. Jordan	Director	October 24, 2024
/s/ Cherylyn H. LeBon Cherylyn H. LeBon	Director	October 24, 2024

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	Exhibit Number			Description
	1.1*			Underwriting Agreement.
	4.1*			Form of Debt Security.
	4.2			Indenture, dated as of November 16, 2018, by and between Waste Connections, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 of the registrant’s Form 8-K filed on November 16, 2018).
	4.3			First Supplemental Indenture, dated as of November 16, 2018, by and between Waste Connections, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 of the registrant’s Form 8-K filed on November 16, 2018).
	4.4			Second Supplemental Indenture, dated as of April 16, 2019, by and between Waste Connections, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 of the registrant’s Form 8-K filed on April 16, 2019).
	4.5			Third Supplemental Indenture, dated as of January 23, 2020, by and between Waste Connections, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 of the registrant’s Form 8-K filed on January 23, 2020).
	4.6			Fourth Supplemental Indenture, dated as of March 13, 2020, by and between Waste Connections, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 of the registrant’s Form 8-K filed on March 13, 2020).
	4.7			Fifth Supplemental Indenture, dated as of September 20, 2021, by and between Waste Connections, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 of the Registrant’s Form 8-K filed on September 20, 2021).
	4.8			Sixth Supplemental Indenture, dated as of March 9, 2022, by and between Waste Connections, Inc. and U.S. Bank Trust Company, National Association, as trustee (incorporated by reference to Exhibit 4.2 of the Registrant’s Form 8-K filed on March 9, 2022).
	4.9			Seventh Supplemental Indenture, dated as of August 18, 2022, by and between Waste Connections, Inc. and U.S. Bank Trust Company National Association, as trustee (incorporated by reference to Exhibit 4.2 of the Registrant’s Form 8-K filed on August 18, 2022).
	4.10			Eighth Supplemental Indenture, dated as of February 21, 2024, by and between Waste Connections, Inc. and U.S. Bank Trust Company, National Association, as trustee (incorporated by reference to Exhibit 4.2 of the Registrant’s Form 8-K filed on February 21, 2024).
	4.11			Ninth Supplemental Indenture, dated as of June 13, 2024, by and between Waste Connections, Inc. and U.S. Bank Trust Company, National Association, as trustee (incorporated by reference to Exhibit 4.2 of the Registrant’s Form 8-K filed on June 13, 2024).
	5.1			Opinion of Locke Lord LLP.
	5.2			Opinion of Bennett Jones LLP.
	23.1			Consent of Locke Lord LLP (contained in Exhibit 5.1 hereto).
	23.2			Consent of Bennett Jones LLP (contained in Exhibit 5.2 hereto).

	/s/ Susan Lee Susan Lee			Director			October 24, 2024
	/s/ Carl D. Sparks Carl D. Sparks			Director			October 24, 2024