FOR IMMEDIATE RELEASE

Waste Management Announces First Quarter Earnings

Net Income Grows More Than 35 Percent and Income from Operations Margin Grows 170 Basis Points

FOR MORE INFORMATION

Waste Management

Web site

www.wm.com

Analysts

Ed Egl

713.265.1656

eegl@wm.com

Media

Toni Beck

713.394.5093

tbeck3@wm.com

HOUSTON — April 24, 2014— Waste Management, Inc. (NYSE: WM) today announced financial results for its quarter ended March 31, 2014. Revenues for the first quarter of 2014 were $3.40 billion compared with $3.34 billion for the same 2013 period. Net income ^(a) for the quarter was $228 million, or $0.49 per diluted share, compared with $168 million, or $0.36 per diluted share, for the first quarter of 2013. In the first quarter of 2013, adjusted net income was $186 million, or $0.40 per diluted share. ^(b)

David P. Steiner, President and Chief Executive Officer of Waste Management, commented, “We saw continued and strong momentum in both yield and cost controls in the first quarter of 2014 that helped drive a more than 35% improvement in reported net income, and more than 22% growth in earnings per share when looking at first quarter 2013 adjusted results. We also saw an increase of 170 basis points in our reported income from operations margin, or 140 basis points when compared to our first quarter 2013 adjusted results. Our yield was 2.6%, the highest level since 2011 and the fourth consecutive quarter over 2.0%. We also achieved SG&A cost savings of $15 million compared to the first quarter of 2013. During the first quarter, our net cash provided by operations improved to $584 million, our capital expenditures were constant at $266 million, and we had $166 million of divestiture proceeds, all of which resulted in free cash flow of $484 million, our highest amount since 2008.” ^(b)

KEY HIGHLIGHTS FOR THE FIRST QUARTER 2014

•    Revenue increased by 1.8%, or $60 million; excluding a negative $17 million in foreign currency translation, revenue would have increased 2.3%.

•    Internal revenue growth from yield for collection and disposal operations was 2.6%.

•    Core price, which consists of price increases and fees, other than the Company’s fuel surcharge, net of rollbacks, was 4.2%, up from 3.2% in the first quarter of 2013.

•    Internal revenue growth from volume was negative 1.8%, a 40 basis point sequential improvement from the fourth quarter of 2013.

•    Average recycling commodity prices were approximately 1.8% lower in the first quarter of 2014 compared with the prior year period. In total, recycling operations negatively affected earnings by less than $0.01 per diluted share when compared to the prior year period.

•    Operating expenses increased by $23 million compared to the prior year period. The majority of the increase relates to operating costs within acquired operations, primarily the Company’s Montreal acquisition. As a percent of revenue, operating expenses were 65.7% in the first quarter of 2014, as compared to 66.2% in the first quarter of 2013, an improvement of 50 basis points.

•    SG&A expenses improved by $15 million compared with the first quarter of 2013 and improved to 11.0% of revenue from 11.7% in the prior year period.

•    Net cash provided by operating activities was $584 million, an improvement of $7 million when compared to the first quarter of 2013, despite over $100 million in working capital headwinds from the payment of incentive compensation and the maturity of interest rate swaps related to a planned senior note issuance. Capital expenditures were $266 million. The Company had $166 million of divestiture proceeds in the quarter, primarily related to the sale of its China waste-to-energy joint venture.

•    Free cash flow increased $136 million to $484 million in the first quarter of 2014.^(b)

•    The Company returned $174 million to shareholders in the form of dividends.

•    The effective tax rate was approximately 29.6%. This rate was lower compared to the prior year due to a non-cash adjustment to deferred taxes resulting from a change in state tax law. The net effect of the benefit was a positive $0.02 per diluted share in the first quarter when compared to the first quarter of 2013.

Steiner concluded, “We are on target through the first quarter and encouraged by the positive momentum in our business. At the beginning of the year, we gave guidance that our 2014 free cash flow would exceed $1.3 billion. With our strong first quarter, we now expect to generate between $1.4 billion and $1.5 billion of free cash flow. With respect to the other elements of our initial full-year guidance, it is difficult to predict underlying business trends in the first quarter due to winter seasonality. However, early April volumes indicate a normal seasonal upturn, but it is only three weeks. After we see the effect on results from our seasonality through the full second quarter, we will likely refine our full-year guidance to reflect any underlying business trends.” ^(b)

(a)    For purposes of this press release, all references to “Net income” refer to the financial statement line item “Net income attributable to Waste Management, Inc.”

(b)    This press release includes adjusted net income and adjusted earnings per diluted share for the first quarter of 2013, which are non-GAAP measures as defined in Regulation G of the Securities Exchange Act of 1934, as amended, as well as a comparisons to first quarter of 2013 adjusted earnings per diluted share and adjusted income from operations margin. The Company reports its financial results in compliance with GAAP, but believes that also discussing non-GAAP measures provides investors with (i) additional, meaningful comparisons of current results to prior periods’ results by excluding items that the Company does not believe reflect its fundamental business performance and are not representative or indicative of our results of operations and (ii) financial measures the Company uses in the management of its business.

The Company’s projected full year 2014 earnings per diluted share are not based on GAAP net earnings per diluted share and are anticipated to be adjusted to exclude the effects of events or circumstances in 2014 that are not representative or indicative of the Company’s results of operations. Projected GAAP earnings per diluted share for the full year would require inclusion of the projected impact of future excluded items, including items that are not currently determinable, but may be significant, such as asset impairments and one-time items, charges, gains or losses from divestitures or litigation, or other items. Due to the uncertainty of the likelihood, amount and timing of any such items, the Company does not have information available to provide a quantitative reconciliation of adjusted projected full year earnings per diluted share to a GAAP earnings per diluted share projection.

The Company also discusses free cash flow and provides a projection of free cash flow, which is a non-GAAP measure, because it believes that it is indicative of our ability to pay our quarterly dividends, repurchase common stock, fund acquisitions and other investments and, in the absence of refinancings, to repay our debt obligations. Free cash flow is not intended to replace “Net cash provided by operating activities,” which is the most comparable U.S. GAAP measure. However, the Company believes free cash flow gives investors useful insight into how the Company views its liquidity. Nevertheless, the use of free cash flow as a liquidity measure has material limitations because it excludes certain expenditures that are required or that the Company has committed to, such as declared dividend payments and debt service requirements. The Company’s definition of free cash flow may not be comparable to similarly titled measures presented by other companies, and therefore is not subject to comparison. The Company defines free cash flow as:

•    Net cash provided by operating activities

•    Less, capital expenditures

•    Plus, proceeds from divestitures of businesses and other assets (net of cash divested).

The quantitative reconciliations of free cash flow for the quarter and adjusted first quarter of 2013 net income, earnings per diluted share, and income from operations margin to the most comparable GAAP measures are included in the accompanying schedules. Non-GAAP measures should not be considered a substitute for financial measures presented in accordance with GAAP, and investors are urged to take into account GAAP measures as well as non-GAAP measures in evaluating the Company.

The Company will host a conference call at 10:00 AM (Eastern) today to discuss the first quarter 2014 results. Information contained within this press release will be referenced and should be considered in conjunction with the call.

The conference call will be webcast live from the Investor Relations section of Waste Management’s website www.wm.com. To access the conference call by telephone, please dial (877) 710-6139 approximately 10 minutes prior to the scheduled start of the call. If you are calling from outside of the United States or Canada, please dial (706) 643-7398. Please utilize conference ID number 10543459 when prompted by the conference call operator.

A replay of the conference call will be available on the Company’s website www.wm.com and by telephone from approximately 1:00 PM (Eastern) Thursday, April 24, 2014 through 5:00 PM (Eastern) on Thursday, May 8, 2014. To access the replay telephonically, please dial (855) 859-2056, or from outside of the United States or Canada dial (404) 537-3406, and use the replay conference ID number 10543459.

The Company, from time to time, provides estimates of financial and other data, comments on expectations relating to future periods and makes statements of opinion, view or belief about current and future events. This press release contains a number of such forward-looking statements, including but not limited to statements regarding, 2014 earnings per diluted share and earnings growth or improvement; 2014 free cash flow; second quarter of 2014 trends and results; future revisions to full-year guidance; and future results from pricing, capital discipline and cost control and reduction initiatives. You should view these statements with caution. They are based on the facts and circumstances known to the Company as of the date the statements are made. These forward-looking statements are subject to risks and uncertainties that could cause actual results to be materially different from those set forth in such forward-looking statements, including but not limited to, increased competition; pricing actions; failure to implement our optimization, growth, and cost savings initiatives and overall business strategy; environmental and other regulations; commodity price fluctuations; disposal alternatives and waste diversion; declining waste volumes; failure to develop and protect new technology; significant environmental or other incidents resulting in liabilities and brand damage; weakness in economic conditions; failure to obtain and maintain necessary permits; labor disruptions; impairment charges; and negative outcomes of litigation or governmental proceedings. Please also see the Company’s filings with the SEC, including Part I, Item 1A of the Company’s most recently filed Annual Report on Form 10-K, for additional information regarding these and other risks and uncertainties applicable to our business. The Company assumes no obligation to update any forward-looking statement, including financial estimates and forecasts, whether as a result of future events, circumstances or developments or otherwise.

ABOUT WASTE MANAGEMENT

Waste Management, Inc., based in Houston, Texas, is the leading provider of comprehensive waste management services in North America. Through its subsidiaries, the company provides collection, transfer, recycling and resource recovery, and disposal services. It is also a leading developer, operator and owner of waste-to-energy and 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.

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Operating revenues

Costs and expenses:

Operating

Selling, general and administrative

Depreciation and amortization

Restructuring

(Income) expense from divestitures, asset impairments and unusual items

Income from operations

Other income (expense):

Interest expense

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Equity in net losses of unconsolidated entities

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Provision for income taxes

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Less: Net income attributable to noncontrolling interests

Net income attributable to Waste Management, Inc.

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Cash dividends declared per common share

EPS Calculation:

Net income attributable to Waste Management, Inc.

Number of common shares outstanding at end of period

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Weighted average basic common shares outstanding

Dilutive effect of equity-based compensation awards and other contingently issuable shares

Weighted average diluted common shares outstanding

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Waste Management, Inc. stockholders’ equity

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Proceeds from divestitures of businesses and other assets (net of cash divested)

Income from Operations as a percent of Revenues and Operating EBITDA as a percent of Revenues

Operating revenues, as reported

Income from operations, as reported

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Operating EBITDA and Operating EBITDA as a percent of Revenues, as reported

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Asset impairments and unusual items

Restructuring charges

Income from operations, as adjusted

Depreciation and amortization

Adjusted Operating EBITDA and Adjusted Operating EBITDA as a percent of Revenues