Virtual Meeting Date: Tuesday, May 12, 2020 Virtual Meeting Time: 2:00 pm CT Virtual Meeting Location: www.virtualshareholdermeeting.com/WM2020

Waste Management, Inc. (NYSE: WM) today announced that, due to increasing public health concerns posed by the COVID-19 pandemic, NOTICE IS HEREBY GIVEN that the location and time of its 2020 Annual Meeting of Stockholders (“Annual Meeting”) has been changed to an audio virtual meeting to be held on Tuesday, May 12, 2020 at 2:00 pm CT. Stockholders will not be able to attend the Annual Meeting in person this year. The only items of business are the same as set forth in the Annual Meeting notice and proxy materials previously distributed. No presentations are planned.

As described in the proxy materials, stockholders as of the close of business on March 16, 2020 (the record date for the Annual Meeting), or who hold a legal proxy for the Annual Meeting provided by their bank, broker, or nominee, are entitled to access and participate in the virtual Annual Meeting, including asking questions, examining the list of registered stockholders and voting their shares.

To attend and participate in the virtual Annual Meeting, stockholders must use the following link: www.virtualshareholdermeeting.com/WM2020 and enter the 16-digit control number found on the proxy card, voting instruction form, or notice previously provided. Those without a 16-digit control number will be admitted to the virtual Annual Meeting as guests, but guests will not have the ability to vote or otherwise participate at the virtual Annual Meeting.

All stockholders - whether attending the virtual Annual Meeting or not - are encouraged to vote and submit their proxies in advance of the meeting by one of the methods described in the proxy materials. Please note that the proxy card included with the proxy materials previously distributed will not be updated to reflect the change in location or time of the Annual Meeting and may continue to be used to vote shares in connection with the Annual Meeting. Stockholders who have sent in proxies, or submitted their proxies via telephone or internet, do not need to take any further action. A list of registered stockholders will be available to stockholders participating in the virtual Annual Meeting at www.virtualshareholdermeeting.com/WM2020.

For further information, please refer to Waste Management’s Notice of 2020 Annual Meeting of Stockholders and Proxy Statement, filed with the Securities and Exchange Commission (the “SEC”) on March 27, 2020, as well as the additional proxy materials filed with the SEC on April 17, 2020, each of which can also be accessed on the “Investors” webpage of www.wm.com. These proxy materials contain important information regarding the matters to be acted upon at the Annual Meeting, and we encourage you to read them.

ABOUT WASTE MANAGEMENT

Waste Management, based in Houston, Texas, is the leading provider of comprehensive waste management environmental services in North America. Through its subsidiaries, the Company provides collection, transfer, disposal services, and recycling and resource recovery. It is also a leading developer, operator and owner of landfill gas-to-energy facilities in the United States. The Company’s customers include residential, commercial, industrial, and municipal customers throughout North America. To learn more information about Waste Management, visit www.wm.com or www.thinkgreen.com.

Waste Management

Website www.wm.com

Analysts Ed Egl 713.265.1656 eegl@wm.com

Media Andy Izquierdo 832.710.5287 aizquierdo@wm.com

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