Exhibit 99.1

ASCENT CAPITAL GROUP ANNOUNCES FINANCIAL RESULTS FOR THE THREE MONTHS AND FULL YEAR ENDED DECEMBER 31, 2013

Englewood, CO — February 26, 2014 — Ascent Capital Group, Inc. (“Ascent” or the “Company”) (Nasdaq: ASCMA) has reported results for the three months and full year ended December 31, 2013. Ascent is a holding company that owns Monitronics International, Inc. (“Monitronics”), one of the nation’s largest and fastest-growing home security alarm monitoring companies.

Headquartered in Dallas, Texas, Monitronics provides security alarm monitoring services to more than 1,000,000 residential and commercial customers as of December 31, 2013. Monitronics’ long-term monitoring contracts provide high margin recurring revenue that results in predictable and stable cash flow.

Highlights(1):

·                  Ascent’s net revenue for the three and twelve months ended December 31, 2013 increased 39.6% and 30.8%, respectively, driven by growth in the number of subscriber accounts and the related increase in monthly recurring revenue

·                  Ascent’s Adjusted EBITDA(2) for the three and twelve months ended December 31, 2013 increased 23.0% and 27.5%, respectively

·                  Ascent’s consolidated balance sheet remains strong with $174.2 million of cash and marketable securities as of December 31, 2013

·                  Monitronics’ Adjusted EBITDA for the three and twelve months ended December 31, 2013 increased 36.0% and 29.5%

·                  Monitronics subscriber accounts as of December 31, 2013 increased 28.8% to 1,046,155

·                  Average RMR per subscriber(3) as of December 31, 2013 increased 3.5% to $40.90

Ascent Chairman and Chief Executive Officer, Bill Fitzgerald stated, “2013 was another great year for our business. The acquisition of Security Networks, coupled with the continuing growth of the core account base within Monitronics, led to another quarter and year of very strong revenue and Adjusted EBITDA growth. The integration of Security Networks is progressing on plan and the dealer affiliates we added through that acquisition are contributing as expected to our core growth engine. We are very pleased with where the business stands today and are encouraged by the prospects for its continued expansion.”

“We continue to be very bullish on the residential alarm monitoring business. We like the management team and business we have created, the strong growth we have achieved, and the investment opportunities we continue to see within the sector. We remain committed to pursuing additional investments within the industry that will further strengthen our already scaled position and enhance our growth profile and shareholder value.”

(1)  Comparisons are year-over-year unless otherwise specified.

(2)  For a definition of Adjusted EBITDA and applicable reconciliations, see the Appendix to this release. Ascent’s net loss from continuing operations for the three and twelve months ended December 31, 2013 totaled $12.6 million and $22.5 million, respectively.

(3)  Calculated as the average recurring monthly revenue per subscriber.

Mike Haislip, President and Chief Executive Officer of Monitronics said, “We are pleased with our solid fourth quarter and full year 2013 results as we achieved strong operational execution across all areas of our business. Our high quality portfolio of accounts, supported by the acquisition of Security Networks, continues to perform well with total subscriber accounts up 29% for the twelve months ended December 31, 2013.”

Mr. Haislip continued, “We remain confident that the residential security market offers attractive growth opportunities and we believe it is a great time to be involved in the industry. Home automation and interactive services are being increasingly embraced by our customers, with approximately 57% of new subscribers signing up for some form of these services in the quarter. As always, we remain disciplined in our approach to managing our business. Our consistent operating performance and the relative predictability of our model give us tremendous confidence in our prospects as we move into 2014 and beyond.”

Three and Twelve Months Ended December 31, 2013 Results

Ascent Capital Group, Inc.

For the three months ended December 31, 2013, Ascent reported net revenue of $132.8 million, an increase of 39.6% compared to $95.1 million for the three months ended December 31, 2012. For the twelve months ended December 31, 2013 net revenue increased 30.8% to $451.0 million. The increase in net revenue for the three and twelve month time periods is primarily attributable to the growth in the number of Monitronics’ subscriber accounts and the increase in average RMR per subscriber which were both driven in part by the August 16, 2013 acquisition of Security Networks.

Ascent’s total cost of services for the three and twelve months ended December 31, 2013 increased 58.3% and 48.3% to $23.2 million and $74.1 million, respectively. The increase for the three and twelve months ended December 31, 2013 is primarily attributable to increases in cellular and service costs at Monitronics. Cellular costs have increased due to more accounts being monitored across the cellular network, which often include interactive and home automation services. This has also resulted in higher service costs as existing subscribers upgrade their systems. Also contributing to the increase for the three and twelve months ended December 31, 2013 was the inclusion of $5.6 million and $8.2 million in Security Networks costs, respectively.

Selling, general & administrative (“SG&A”) expenses for the three months ended December 31, 2013 increased 36.0% to $26.9 million, and increased 24.5% to $92.0 million for the full year 2013. The increases are primarily attributable to increases in Monitronics SG&A costs as well as the inclusion of Security Networks SG&A of $4.3 million and $6.5 million for the three and twelve months ended December 31, 2013, respectively. The increase in Monitronics SG&A is attributable to increased payroll and other expenses due to Monitronics’ subscriber growth in 2013. For the full year, Monitronics also incurred acquisition and integration costs of $2.5 million and $1.3 million, respectively, related to the professional services and other costs incurred in connection with the Security Networks acquisition. Additionally, for the full year, Ascent’s consolidated stock-based compensation expense increased approximately $2.9 million, related to restricted stock and option awards granted to certain executives of Ascent in late 2012 and throughout 2013.

For the three months ended December 31, 2013, Ascent’s Adjusted EBITDA increased 23.0% to $86.3 million. For the full year 2013, Ascent’s Adjusted EBITDA increased 27.5% to $304.5 million. The increases in Adjusted EBITDA for both periods was primarily due to revenue and subscriber growth at Monitronics, partially offset by higher operating and service costs. Additionally, the percentage increase

in Adjusted EBITDA for the three months ended December 31, 2013 was impacted by a gain on sale of Ascent real estate of approximately $7.4 million recognized in the three months ended December 31, 2012.

Ascent reported a net loss from continuing operations for the three and twelve months ended December 31, 2013 of $12.6 million and $22.5 million, respectively, compared to a net loss from continuing operations of $585,000 and $25.0 million for the same periods in 2012.

Monitronics International, Inc.

For the three and twelve months ended December 31, 2013, Monitronics reported net revenue of $132.8 million and $451.0 million, increases of 39.6% and 30.8%, respectively. The increase in net revenue for the three and twelve month time periods is primarily attributable to growth in the number of Monitronics’ subscriber accounts and the increase in average RMR per subscriber. The growth in subscriber accounts reflects the effects of the acquisition of Security Networks in August 2013, which included over 200,000 subscriber accounts, the acquisition of over 136,000 accounts through Monitronics’ authorized dealer program subsequent to December 31, 2012, and the purchase of approximately 18,200 accounts in various bulk buys over the last 12 months. Average RMR per subscriber increased from $39.50 as of December 31, 2012 to $40.90 as of December 31, 2013. Partially offsetting the increase in net revenue for the twelve months ended December 31, 2013 is the negative impact of a $2.7 million fair value adjustment that reduced deferred revenue acquired in the Security Networks acquisition.

Monitronics’ total cost of services for the three and twelve months ended December 31, 2013 increased 58.3% and 48.3% to $23.2 million and $74.1 million, respectively. The increase for the three and twelve months ended December 31, 2013 is primarily attributable to increases in cellular and service costs.  Cellular costs have increased due to more accounts being monitored across the cellular network, which often include interactive and home automation services.  This has also resulted in higher service costs as existing subscribers upgrade their systems.  Also contributing to the increase for the three and twelve months ended December 31, 2013 was the inclusion of $5.6 million and $8.2 million in Security Networks costs, respectively.

Monitronics’ SG&A costs for the three months and twelve months ended December 31, 2013 increased 42.2% to $23.2 million and 28.5% to $77.2 million. The increased Monitronics SG&A costs for the three and twelve months ended December 31, 2013 are attributable to increased payroll and other expenses due to Monitronics subscriber growth in 2013, as well as the inclusion of Security Networks SG&A of $4.3 million and $6.5 million, respectively.  For the full year, SG&A expense also includes acquisition and integration costs of $2.5 million and $1.3 million, respectively, related to professional services and other costs incurred in connection with the Security Networks acquisition.

Monitronics’ Adjusted EBITDA for the three months ended December 31, 2013 was $87.8 million, an increase of 36.0% versus the three months ended December 31, 2012. For the twelve months ended December 31, 2013, Monitronics’ Adjusted EBITDA increased 29.5% to $305.3 million. The increase in Adjusted EBITDA for the quarter and full year is primarily due to revenue and subscriber growth at Monitronics driven by accounts acquired through Monitronics’ authorized dealer program, the acquisition of Security Networks and various bulk account purchases over the last twelve months. Monitronics’ Adjusted EBITDA as a percentage of revenue was 66.1% in the quarter ended December 31, 2013, compared to 67.9% for the three months ended December 31, 2012. Monitronics’ Adjusted EBITDA as a percentage of revenue for the twelve months ended December 31, 2013 totaled 67.7%, compared to 68.3% for the year-ago period.

Monitronics reported net losses for the three and twelve months ended December 31, 2013 of $10.3 million and $17.6 million, respectively.

The table below presents subscriber data for the twelve months ended December 31, 2013 and 2012:

(a)         Canceled accounts that are contractually guaranteed to be refunded from holdback.

(b)         Includes 2,064 subscriber accounts that were proactively cancelled during 2013 which were active with both Monitronics and Security Networks upon acquisition.

During the three months ended December 31, 2013, Monitronics acquired 37,341 subscriber accounts. Acquired contracts for the twelve months ended December 31, 2013 include 203,898 accounts acquired in the Security Networks acquisition, which was completed on August 16, 2013, and the acquisition of over 136,000 accounts through Monitronics’ authorized dealer program subsequent to December 31, 2012, and the purchase of approximately 18,200 accounts in various bulk buys over the last 12 months.

Monitronics’ trailing twelve month attrition for the period ending December 31, 2013 was 12.3% compared to 12.2% for the year ended December 31, 2012.

Ascent Liquidity and Capital Resources

At December 31, 2013, on a consolidated basis, Ascent had $44.7 million of cash and cash equivalents and $129.5 million of marketable securities. The company may use a portion of these assets to decrease debt obligations or fund stock repurchases, strategic acquisitions or investment opportunities.

During the twelve months ended December 31, 2013, Monitronics used cash of $234.9 million to fund subscriber account acquisitions, excluding accounts acquired in the Security Networks acquisition and net of holdback and guarantee obligations.

At December 31, 2013, the existing long-term debt principal balance of $1.6 billion includes Monitronics’ Senior Notes, Credit Facility and Credit Facility revolver and Ascent’s Convertible Notes. The Convertible Notes have an outstanding principal balance of $103.5 million as of December 31, 2013 and mature on July 15, 2020. Monitronics’ Senior Notes have an outstanding principal balance of $585.0 million as of December 31, 2013 and mature on April 1, 2020. The Credit Facility term loans have an outstanding principal balance of $907.5 million as of December 31, 2013 and require principal payments of approximately $2.3 million per quarter with the remaining outstanding balance becoming due on

March 23, 2018. The Credit Facility revolver has an outstanding balance of $19.5 million as of December 31, 2013 and becomes due on December 22, 2017.

Conference Call

Ascent will host a conference call today, February 26, 2014, at 5:00 p.m. ET. To access the call please dial (888) 462-5915 from the United States, or (760) 666-3831 from outside the U.S. The conference call I.D. number is 59199384. Participants should dial in 5 to 10 minutes before the scheduled time and must be on a touch-tone telephone to ask questions.

A replay of the call can be accessed through April 5, 2014 by dialing (800) 585-8367 from the U.S., or (404) 537-3406 from outside the U.S. The conference call I.D. number is 59199384.

This call will also be available as a live webcast which can be accessed at Ascent’s Investor Relations Website at http://www.ascentcapitalgroupinc.com/Investor-Relations.aspx.

Forward Looking Statements

This press release includes certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements about business strategies, acquisition opportunities, market potential, consumer demand for interactive and home automation services, the integration of Security Networks’ operations, future financial prospects and other matters that are not historical facts. These forward-looking statements involve many risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements, including, without limitation, possible changes in market acceptance of our services, technological innovations in the alarm monitoring industry, competitive issues, continued access to capital on terms acceptable to Ascent, our ability to capitalize on acquisition opportunities, general market and economic conditions, and changes in law and government regulations. These forward-looking statements speak only as of the date of this press release, and Ascent expressly disclaims any obligation or undertaking to disseminate any updates or revisions to any forward-looking statement contained herein to reflect any change in Ascent’s expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based. Please refer to the publicly filed documents of Ascent, including the most recent Form 10-K for additional information about Ascent and about the risks and uncertainties related to Ascent’s business which may affect the statements made in this press release.

About Ascent Capital Group, Inc.

Ascent is a holding company and owns 100 percent of its operating subsidiary, Monitronics International Inc., one of the nation’s largest, fastest-growing home security alarm monitoring companies, headquartered in Dallas, TX, and certain former subsidiaries of Ascent Media Group, LLC.

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Contact:

Erica Bartsch

Sloane & Company

212-446-1875

ebartsch@sloanepr.com

ASCENT CAPITAL GROUP, INC. AND SUBSIDIARIES

Consolidated Balance Sheets

Amounts in thousands, except share amounts

ASCENT CAPITAL GROUP, INC. AND SUBSIDIARIES

Consolidated Statements of Operations and Comprehensive Income (Loss)

Amounts in thousands, except per share amounts

 ASCENT CAPITAL GROUP, INC. AND SUBSIDIARIES

Consolidated Statements of Cash Flows

Amounts in thousands

Adjusted EBITDA

We evaluate the performance of our operations based on financial measures such as revenue and “Adjusted EBITDA.”  Adjusted EBITDA is defined as net income (loss) before interest expense, interest income, income taxes, depreciation, amortization (including the amortization of subscriber accounts and dealer network), realized and unrealized gain/(loss) on derivative instruments, restructuring charges, stock-based and other non-cash long-term incentive compensation, and other non-cash or nonrecurring charges.   Ascent Capital believes that Adjusted EBITDA is an important indicator of the operational strength and performance of its business, including the business’ ability to fund its ongoing acquisition of subscriber accounts, its capital expenditures and to service its debt.  In addition, this measure is used by management to evaluate operating results and perform analytical comparisons and identify strategies to improve performance.   Adjusted EBITDA is also a measure that is customarily used by financial analysts to evaluate the financial performance of companies in the security alarm monitoring industry and is one of the financial measures, subject to certain adjustments, by which Monitronics’ covenants are calculated under the agreements governing their debt obligations.  Adjusted EBITDA does not represent cash flow from operations as defined by generally accepted accounting principles (“GAAP”), should not be construed as an alternative to net income or loss and is indicative neither of our results of operations nor of cash flows available to fund all of our cash needs.  It is, however, a measurement that Ascent Capital believes is useful to investors in analyzing its operating performance.  Accordingly, Adjusted EBITDA should be considered in addition to, but not as a substitute for, net income, cash flow provided by operating activities and other measures of financial performance prepared in accordance with GAAP.  Adjusted EBITDA is a non-GAAP financial measure.  As companies often define non-GAAP financial measures differently, Adjusted EBITDA as calculated by Ascent Capital should not be compared to any similarly titled measures reported by other companies.

The following table provides a reconciliation of Ascent Capital’s total Adjusted EBITDA to net loss from continuing operations

(amounts in thousands):

The following table provides a reconciliation of Monitronics’ total Adjusted EBITDA to net loss (amounts in thousands):