Waste Connections, Inc. (TSX/NYSE:WCN) ("Waste Connections" or the "Company") today announced that its Board of Directors has declared a regular quarterly cash dividend of $0.35 U.S. per common share of the Company. The regular quarterly cash dividend will be paid on May 21, 2026 to shareholders of record at the close of business on May 6, 2026. The Board intends to review the quarterly dividend each October, with a long-term objective of increasing the amount of the dividend.

Shareholders of Waste Connections whose common shares are held by a bank or broker that participates in U.S. depositary DTC will receive payment of their dividends in U.S. dollars. Shareholders of Waste Connections whose common shares are held by a bank or broker that participates in Canadian depositary CDS will receive payment of their dividends in Canadian dollars, calculated based on the Bank of Canada's daily average exchange rate on May 6, 2026. Shareholders of Waste Connections who hold their shares in direct registration with Computershare, the Company's transfer agent, will receive payment of their dividends in Canadian dollars if they are residents of Canada, as reflected in Waste Connections' shareholders register, and will receive their dividend payments in U.S. dollars if they are not residents of Canada, including if they are residents of the U.S.

About Waste Connections

Waste Connections (wasteconnections.com) is 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. The Company serves approximately nine million residential, commercial and industrial customers in mostly exclusive and secondary markets across 46 states in the U.S. and six provinces in Canada. Waste Connections also provides non-hazardous oilfield 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. Waste Connections views its Environmental, Social and Governance ("ESG") efforts as integral to its business, with initiatives consistent with its objective of long-term value creation and focused on reducing emissions, increasing resource recovery of both recyclable commodities and clean energy fuels, reducing reliance on off-site disposal for landfill leachate, further improving safety and enhancing employee engagement. Visit wasteconnections.com/sustainability for more information and updates on our progress towards targeted achievement.

Safe Harbor and Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995 ("PSLRA"), including "forward-looking information" within the meaning of applicable Canadian securities laws. These forward-looking statements are neither historical facts nor assurances of future performance and reflect Waste Connections' current beliefs and expectations regarding future events and operating performance. These forward-looking statements are often identified by the words "may," "might," "believes," "thinks," "expects," "estimate," "continue," "intends" or other words of similar meaning. All of the forward-looking statements included in this press release are made pursuant to the safe harbor provisions of the PSLRA and applicable securities laws in Canada. Forward-looking statements involve risks and uncertainties. Forward-looking statements in this press release include, but are not limited to, statements about the timing and amount of cash dividends. Important factors that could cause actual results to differ, possibly materially, from those indicated by the forward-looking statements include, but are not limited to, risk factors detailed from time to time in the Company's filings with the SEC and the securities commissions or similar regulatory authorities in Canada. You should not place undue reliance on forward-looking statements, which speak only as of the date of this press release. Waste Connections undertakes no obligation to update the forward-looking statements set forth in this press release, whether as a result of new information, future events, or otherwise, unless required by applicable securities laws.

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Mary Anne Whitney / (832) 442-2253

maryannew@wasteconnections.com

Joe Box / (832) 442-2153

joe.box@wasteconnections.com

Waste Connections Announces Regular Quarterly Cash Dividend