Exhibit 99.1

TIME WARNER CABLE REPORTS

2013 FIRST-QUARTER RESULTS

NEW YORK, NY, April 25, 2013 – Time Warner Cable Inc. (NYSE: TWC) today reported financial results for its first quarter ended March 31, 2013.

Time Warner Cable Chief Executive Officer Glenn Britt said: “Business Services continues to perform very well, generating 25% year-over-year revenue growth, and is on track for another terrific year. In Residential Services, we’re executing on our revitalization plans to build a fundamentally stronger and more agile operation. As a result, I remain very excited about the long-term prospects for this business.”

FINANCIAL RESULTS

Revenue for the first quarter of 2013 increased 6.6% from the first quarter of 2012 to $5.5 billion. Residential services revenue increased 4.0% to $4.6 billion, business services revenue grew 25.2% to $537 million, advertising revenue increased 8.1% to $228 million and other revenue grew 62.3% to $99 million.

Revenue for the first quarter of 2013 benefited from two additional months of revenue from Insight Communications Company, Inc., which was acquired on February 29, 2012, as detailed below.

Excluding the impact from Insight revenue during the first two months of the first quarter of 2013:

Residential services revenue

Residential services revenue growth was primarily driven by an increase in high-speed data revenue, partially offset by declines in video and voice revenue.

Business services revenue

Business services revenue growth was primarily due to increases in high-speed data and voice subscribers and growth in cell tower backhaul revenue.

Advertising revenue

Advertising revenue increased primarily as a result of growth in revenue from advertising inventory sold on behalf of other video distributors.

Other revenue

Other revenue increased primarily as a result of fees from distributors of the Company’s two Los Angeles regional sports networks, which were launched on October 1, 2012.

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Adjusted Operating Income before Depreciation and Amortization (“Adjusted OIBDA”) for the first quarter of 2013 increased 2.1% from the first quarter of 2012 to $1.9 billion. The increase was driven by revenue growth, partially offset by a 9.3% increase in operating expenses.

Operating expenses grew primarily due to higher employee costs and video programming expenses, as well as the costs associated with the Company’s Los Angeles regional sports networks and the advertising inventory sold on behalf of other video distributors, both of which are included in other direct operating costs in cost of revenue.

Operating Income for the first quarter of 2013 increased 1.7% from the first quarter of 2012 to $1.1 billion driven by higher Adjusted OIBDA and a decrease in merger-related and restructuring costs, partially offset by higher depreciation and amortization expenses primarily as a result of two additional months of Insight costs associated with its property, plant and equipment and customer relationship intangible assets. The increase in depreciation expense was partially offset by certain assets acquired in the 2006 transactions with Adelphia Communications Corporation and Comcast Corporation that were fully depreciated as of July 31, 2012.

Adjusted OIBDA less Capital Expenditures for the first three months of 2013 totaled $1.1 billion, a 2.1% decrease over the first three months of 2012, due to higher capital expenditures, partially offset by higher Adjusted OIBDA. Capital Expenditures were $770 million for the first three months of 2013.

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Net Income Attributable to TWC Shareholders was $401 million, or $1.35 per basic common share and $1.34 per diluted common share, for the first quarter of 2013 compared to $382 million, or $1.21 per basic common share and $1.20 per diluted common share, for the first quarter of 2012.

Adjusted Net Income Attributable to TWC Shareholders and Adjusted Diluted EPS, which exclude certain items affecting the comparability of TWC’s results for 2013 and 2012 detailed in Note 1 to the accompanying consolidated financial statements, were $423 million and $1.41, respectively, for the first quarter of 2013 compared to $414 million and $1.30, respectively, for the first quarter of 2012. Adjusted Diluted EPS for the first quarter of 2013 benefited from lower average common shares outstanding as a result of share repurchases under the Company’s stock repurchase program.

Free Cash Flow for the first three months of 2013 decreased 7.9% to $661 million from $718 million in the first three months of 2012, due mainly to an increase in capital expenditures, partially offset by higher cash provided by operating activities. Cash Provided by Operating Activities for the first three months of 2013 was $1.4 billion, a 0.8% increase from the first three months of 2012. This increase was driven by higher Adjusted OIBDA and lower net interest payments, partially offset by an increase in working capital requirements.

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NM—Not meaningful.

Net Debt and Mandatorily Redeemable Preferred Equity, which totaled $23.6 billion as of March 31, 2013, increased slightly from December 31, 2012 as Free Cash Flow and the impact of a favorable change in exchange rates on foreign currency denominated debt were more than offset by the cash used for share repurchases and the dividend payment.

RETURN OF CAPITAL

Time Warner Cable returned $855 million to shareholders during the first quarter of 2013. Share repurchases during the first quarter of 2013 totaled $660 million or 7.1 million shares of common stock. As of March 31, 2013, $1.6 billion remained under the Company’s share repurchase authorization. Time Warner Cable also paid a regular dividend of $0.65 per share of common stock, $195 million in aggregate, during the first quarter of 2013.

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SUBSCRIBER METRICS

For definitions related to the Company’s subscriber metrics, refer to the Trending Schedules posted on the Company’s website at www.twc.com/investors.

Non-GAAP Financial Measures

The Company refers to certain financial measures that are not presented in accordance with U.S. generally accepted accounting principles (“GAAP”), including OIBDA, Adjusted OIBDA, Adjusted OIBDA less capital expenditures, Adjusted net income attributable to TWC shareholders, Adjusted Diluted EPS and Free Cash Flow. Refer to Note 2 to the accompanying consolidated financial statements for a discussion of the Company’s use of non-GAAP financial measures.

About Time Warner Cable

Time Warner Cable Inc. (NYSE: TWC) is among the largest providers of video, high-speed data and voice services in the United States, connecting more than 15 million customers to entertainment, information and each other. Time Warner Cable Business Class offers data, video and voice services to businesses of all sizes, cell tower backhaul services to wireless carriers and enterprise-class, cloud-enabled hosting, managed applications and services. Time Warner Cable Media, the advertising arm of Time Warner Cable, offers national, regional and local companies innovative advertising solutions. More information about the services of Time Warner Cable is available at www.twc.com, www.twcbc.com and www.twcmedia.com.

Additional details on financial and subscriber metrics are included in the Trending Schedules and Presentation Slides posted on the Company’s Investor Relations website at www.twc.com/investors.

Information on Conference Call

Time Warner Cable’s earnings conference call can be heard live at 8:30 am ET on Thursday, April 25, 2013. To listen to the call, visit www.twc.com/investors.

Caution Concerning Forward-Looking Statements

This document includes certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on management’s current expectations or beliefs, and are subject to uncertainty and changes in circumstances. Actual results may vary materially from those expressed or implied by the statements herein due to changes in economic, business, competitive, technological, strategic and/or regulatory factors, and other factors affecting the operations of Time Warner Cable Inc. More detailed information about these factors may be found in filings by Time Warner Cable Inc. with the Securities and Exchange Commission, including its most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q. Time Warner Cable is under no obligation to, and expressly disclaims any such obligation to, update or alter its forward-looking statements, whether as a result of new information, future events, or otherwise.

Contacts:

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TIME WARNER CABLE INC.

CONSOLIDATED BALANCE SHEET

(Unaudited)

See accompanying notes.

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TIME WARNER CABLE INC.

CONSOLIDATED STATEMENT OF OPERATIONS

(Unaudited)

See accompanying notes.

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TIME WARNER CABLE INC.

CONSOLIDATED STATEMENT OF CASH FLOWS

(Unaudited)

See accompanying notes.

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TIME WARNER CABLE INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The following items affected the comparability of Time Warner Cable Inc.’s (“TWC” or the “Company”) results for the three months ended March 31, 2013 and 2012:

In discussing its performance, the Company may use certain measures that are not calculated and presented in accordance with U.S. generally accepted accounting principles (“GAAP”). These measures include OIBDA, Adjusted OIBDA, Adjusted OIBDA less capital expenditures, Adjusted net income attributable to TWC shareholders, Adjusted Diluted EPS and Free Cash Flow, which the Company defines as follows:

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TIME WARNER CABLE INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(Unaudited)

Management uses OIBDA and Adjusted OIBDA, among other measures, in evaluating the performance of the Company’s business because they eliminate the effects of (i) considerable amounts of noncash depreciation and amortization and (ii) items not within the control of the Company’s operations managers (such as income tax provision, other income (expense), net, and interest expense, net). Adjusted OIBDA further eliminates the effects of certain noncash items identified in the definition of Adjusted OIBDA above. Adjusted OIBDA less capital expenditures also allows management to evaluate performance including the effect of capital spending decisions. Adjusted OIBDA and Adjusted OIBDA less capital expenditures are also significant performance measures used in the Company’s annual incentive compensation programs. Adjusted net income attributable to TWC shareholders and Adjusted Diluted EPS are considered important indicators of the operational strength of the Company as these measures eliminate amounts that do not reflect the fundamental performance of the Company. The Company utilizes Adjusted Diluted EPS, among other measures, to evaluate its performance both on an absolute basis and relative to its peers and the broader market. Management believes that Free Cash Flow is an important indicator of the Company’s ability to generate cash, reduce net debt, pay dividends, repurchase common stock and make strategic investments, after the payment of cash taxes, interest and other cash items. In addition, all of these measures are commonly used by analysts, investors and others in evaluating the Company’s performance and liquidity.

These measures have inherent limitations. For example, OIBDA and Adjusted OIBDA do not reflect capital expenditures or the periodic costs of certain capitalized assets used in generating revenue. To compensate for such limitations, management evaluates performance through Adjusted OIBDA less capital expenditures and Free Cash Flow, which reflect capital expenditure decisions, and net income attributable to TWC shareholders, which reflects the periodic costs of capitalized assets. Adjusted OIBDA and Adjusted OIBDA less capital expenditures do not reflect any of the items noted as exclusions in the definition of Adjusted OIBDA above. To compensate for these limitations, management evaluates performance through OIBDA and net income attributable to TWC shareholders, which do reflect such items. OIBDA, Adjusted OIBDA and Adjusted OIBDA less capital expenditures also fail to reflect the significant costs borne by the Company for income taxes and debt

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TIME WARNER CABLE INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(Unaudited)

servicing costs, the results of the Company’s equity investments and other non-operational income or expense. Additionally, Adjusted net income attributable to TWC shareholders and Adjusted Diluted EPS do not reflect certain charges that affect the operating results of the Company and they involve judgment as to whether items affect fundamental operating performance. Management compensates for these limitations by using other analytics such as a review of net income attributable to TWC shareholders. Free Cash Flow, a liquidity measure, does not reflect payments made in connection with investments and acquisitions, which reduce liquidity. To compensate for this limitation, management evaluates such investments and acquisitions through other measures such as return on investment analyses.

These non-GAAP measures should be considered in addition to, not as substitutes for, the Company’s Operating Income, net income attributable to TWC shareholders and various cash flow measures (e.g., cash provided by operating activities), as well as other measures of financial performance and liquidity reported in accordance with GAAP, and may not be comparable to similarly titled measures used by other companies.

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