Exhibit 99.1

StoneMor Partners L.P. Announces 2014 Fourth Quarter and Full Year Financial Results

LEVITTOWN, PA., March 13, 2015 —StoneMor Partners L.P. (NYSE: STON) (“StoneMor”) announced its results of operations for the three months and full year ended December 31, 2014.

Larry Miller, StoneMor’s President and CEO commented, “We are very pleased with StoneMor’s performance in 2014. Not only did we generate record revenues, both GAAP and Production-based (non-GAAP), but the year itself was transformative. Driving this transformation were the two previously announced large transactions with Service Corporation International and the Archdiocese of Philadelphia as well as the large financial commitment from a private investment fund. These three events significantly expanded our growth potential by raising our profile in the four vibrant markets of Florida, North Carolina, Pennsylvania and Virginia and by giving us the financial flexibility to consider similar transactions in the future should the opportunity arise.

“Our quarterly returns reflected solid gains in pre-need cemetery revenues which rose 29.5% (GAAP) compared to the prior year period, at-need cemetery revenues which rose 23.5% (GAAP) and funeral home revenues which rose 5.9% (GAAP), helping to drive a strong increase in operating profit. Excluding the impact of non-recurring items, the comparisons of our adjusted operating profits (non-GAAP), cash flow (GAAP) and distributable cash flow (non-GAAP) were favorable. As we look beyond the impact of one-time items such as legal settlements in 2013, higher than normal investment income in 2013, a large payment to reduce accounts payable in 2014, etc., and examine the ongoing performance of our business, we are very much where we expected to be at this point,” said Miller.

Quarterly Financial Highlights

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“As with our quarterly comparisons, our year-over-year comparisons were impacted by a combination of one-time items as well as the ongoing expenses associated with the build-out of pre-need sales programs at the Archdiocese of Philadelphia. Nevertheless, as we look at the overall performance for the company, normalizing revenue and taking into account the various one-time items, we had a tremendous year and are very well positioned for the future.”

Full Year Financial Highlights

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“We continue to build up our newly created insurance division and while the results are not yet material, we have high hopes for the eventual contributions from that business,” said Miller. “Our backlog continues to grow and cash, accounts receivable and merchandise trusts minus merchandise trust liability reached $497.1 million, reflecting a company with a very strong financial foundation. We also raised our distribution three times during the year.”

The Company reports its financial results in accordance with U.S. GAAP. However, management believes that certain non-GAAP financial measures used in managing the business may provide investors with additional information regarding underlying trends and ongoing results on a comparable basis. Specifically, management believes that production-based revenues and adjusted operating profit allow the investor to gain insight into the current operating performance of the Company. Please see the section of this press release “Non-GAAP Financial Measures” to view the reconciliation tables. Non-GAAP financial measures used by the Company should not be considered as alternatives to GAAP financial measures, and you should not consider such non-GAAP financial measures in isolation or as a substitute for an analysis of the Company’s results as reported under U.S. GAAP. Certain 2013 information has been adjusted to include the effects of retrospective adjustments resulting from the Company’s 2013 first quarter acquisition.

Investor Conference Call and Webcast

StoneMor will conduct a conference call to discuss 2014 results today, Friday, March 13, 2015 at 10:00 a.m. ET. The conference call can be accessed by calling (800) 738-1032. An audio replay of the conference call will be available by calling (800) 633-8284 through 12:00 p.m. ET on March 27, 2015. The reservation number for the audio replay is 21762581. A live webcast of

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the conference call will also be available to investors who may access the call through the investors section of www.stonemor.com. An audio replay of the conference call will also be archived on StoneMor’s website at www.stonemor.com. Additional detailed financial, statistical and business-related information is included in a financial supplement. The earnings release and the financial supplement are available at www.stonemor.com

About StoneMor Partners L.P.

StoneMor Partners L.P., headquartered in Levittown, Pennsylvania, is an owner and operator of cemeteries and funeral homes in the United States, with 303 cemeteries and 98 funeral homes in 28 states and Puerto Rico. StoneMor is the only publicly traded death care company structured as a partnership. StoneMor’s cemetery products and services, which are sold on both a pre-need (before death) and at-need (at death) basis, include: burial lots, lawn and mausoleum crypts, burial vaults, caskets, memorials, and all services which provide for the installation of this merchandise. For additional information about StoneMor Partners L.P., please visit StoneMor’s website, and the investors section, at http://www.stonemor.com.

Forward-Looking Statements

Certain statements contained in this press release, including, but not limited to, information regarding the status and progress of our operating activities, the plans and objectives of our management, assumptions regarding our future performance and plans, and any financial guidance or guidance related to our future distributions are forward-looking statements.

Generally, the words “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend (including, but not limited to our intent to maintain or increase our distributions),” “project,” “expect,” “predict” and similar expressions identify these forward-looking statements.

These forward-looking statements are made subject to certain risks and uncertainties that could cause actual results to differ materially from those stated or implied. Our major risk is related to uncertainties associated with the cash flow from our pre-need and at-need sales, our trusts, and financings, which may impact our ability to meet our financial projections, our ability to service our debt and pay distributions, and our ability to increase our distributions.

Our additional risks and uncertainties, include, but are not limited to, the following: uncertainties associated with future revenue and revenue growth; uncertainties associated with the integration or anticipated benefits of our recent acquisitions or any future acquisitions; our ability to complete and fund additional acquisitions; the effect of economic downturns; the impact of our significant leverage on our operating plans; the decline in the fair value of certain equity and debt securities held in our trusts; our ability to attract, train and retain an adequate number of sales people; uncertainties associated with the volume and timing of pre-need sales of cemetery services and products; increased use of cremation; changes in the death rate; changes in the political or regulatory environments, including potential changes in tax accounting and trusting policies; our ability to successfully implement a strategic plan relating to achieving operating improvements, strong cash flows and further deleveraging; our ability to successfully compete in the cemetery and funeral home industry; litigation or legal proceedings that could expose us to significant liabilities and damage our reputation; the effects of cyber security attacks due to our significant reliance on information technology; uncertainties relating to the financial condition of third-party insurance companies that fund our pre-need funeral contracts; and various other uncertainties associated with the death care industry and our operations in particular.

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When considering forward-looking statements, you should keep in mind the risk factors and other cautionary statements set forth in our Annual Report on Form 10-K and our other reports filed with the SEC. Except as required under applicable law, we assume no obligation to update or revise any forward-looking statements made herein or any other forward-looking statements made by us, whether as a result of new information, future events or otherwise.

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Non-GAAP Financial Measures

Production Based Revenue

We present production based revenue because management believes it provides for a useful measure of both the value of contracts written and investment and other income generated during a given period and is a critical component of adjusted operating profit.

Production based revenue is a non-GAAP financial measure that may not be consistent with other similar non-GAAP financial measures presented by other publicly traded companies.

Adjusted Operating Profit

We present Adjusted Operating Profit because management believes it provides for a useful measure of economic value added by presenting an effective matching of the value of current and future revenue sources generated within a given period to the cost of producing such revenue and managing our day to day operations within that same period. It is a significant measure that we believe is an indicator of eventual profit generated within a given period of time.

Adjusted Operating Profit is a non-GAAP financial measure that may not be consistent with other similar non-GAAP financial measures presented by other publicly traded companies.

Adjusted Operating Cash Generated

We present adjusted operating cash generated revenue because management believes it provides for a useful measure of the amount of cash generated that is available to make capital expenditures and partner distributions once all cash flow timing issues have been settled.

Adjusted operating cash generated is a non-GAAP financial measure that may not be consistent with other similar non-GAAP financial measures presented by other publicly traded companies.

Distributable Free Cash Flow

We present Distributable Free Cash Flow because management believes this information is a useful adjunct to Net Cash Provided by (Used in) Operating Activities under GAAP. Distributable Free Cash Flow is a significant liquidity metric that we believe is an indicator of our ability to generate cash flow during any quarter at a level sufficient to pay the quarterly distribution to the holders of our common units and for other purposes, such as repaying debt and expanding through strategic investments.

Distributable Free Cash Flow is similar to quantitative standards of free cash flow used throughout the deathcare industry and to quantitative standards of distributable cash flow used throughout the investment community with respect to publicly traded partnerships, but is not intended to be a prediction of the future. However, our calculation of distributable free cash flow may not be consistent with calculations of free cash flow, distributable cash flow or other similarly titled measures of other companies. Distributable Free Cash Flow should not be used as a substitute for the GAAP measure of cash flows from operating, investing, or financing activities.

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Production Based Partners’ Capital

We present production based partners’ capital as a means to provide better insight into the value that our activities contribute to the enterprise. Because a portion of our revenues and direct selling expenses are captured on our balance sheet until we deliver the underlying goods or services, we believe that by including these items in our view of partners’ capital, we gain better insight into the value creation.

Backlog

We define backlog as deferred cemetery revenues and investment income less deferred selling and obtaining costs. It does not include deferred unrealized gains and losses on merchandise trust assets.

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Reconciliation of Production Based Revenue (non-GAAP) and Adjusted Operating

Profit (non-GAAP) to Revenue (GAAP) and Operating Profit (GAAP)

The tables above analyze our results of operations and the changes therein for the three months and twelve months ended December 31, 2014, as compared to the same periods last year. The tables are structured so that our readers can determine whether changes were based upon changes in the level of merchandise and services and other revenues generated during the periods and/ or changes in the timing when merchandise and services were delivered.

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Critical Financial Measures

Reconciliation of Adjusted Operating Profit (non-GAAP) to Operating Profit (GAAP)

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Reconciliation of Production Based Revenues (non-GAAP) to Revenues (GAAP)

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Reconciliation of Adjusted Operating Cash Flows (non-GAAP) and Distributable Free

Cash Flow (Non-GAAP) to Operating Cash Flows (GAAP)

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Production Based Partners’ Capital

Selected Net Assets

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StoneMor Partners L.P.

Consolidated Balance Sheet

(in thousands)

See accompanying notes to the Consolidated Financial Statements in the Annual Report to be filed on Form 10-K for the year ended December 31, 2014.

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StoneMor Partners L.P.

Consolidated Statement of Operations

(in thousands, except per unit data)

See accompanying notes to the Consolidated Financial Statements in the Annual Report to be filed on Form 10-K for the year ended December 31, 2014.

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StoneMor Partners L.P.

Consolidated Statement of Cash Flows

(in thousands)

See accompanying notes to the Consolidated Financial Statements in the Annual Report to be filed on Form 10-K for the year ended December 31, 2014.

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