Exhibit 99.1

SiriusXM Reports Second Quarter 2015 Results and Increases Guidance

NEW YORK – July 28, 2015 – SiriusXM today announced second quarter 2015 operating and financial results, including record second quarter revenue of $1.12 billion, up 8% versus the second quarter of 2014.

Net income in the second quarter of 2015 was $103 million, including a pre-tax $108 million charge to settle certain royalty litigation, versus $120 million in the second quarter of 2014. Net income per diluted common share was $0.02 in the second quarter of 2015 and 2014. Adjusted EBITDA was $415 million in the second quarter of 2015, up 12% from $370 million in the second quarter of 2014.

Adjusted net income was $170 million in the second quarter of 2015, up 29% from $131 million in the second quarter of 2014. Adjusted net income per diluted common share was $0.03 in the second quarter of 2015 compared to $0.02 in the second quarter of 2014. Adjusted net income excludes the impact of the settlement of certain royalty litigation during the second quarter of 2015.

“After another quarter of exceptional execution and subscriber growth, we are increasing our subscriber guidance for the second time this year to approximately 1.8 million net additions. We are also increasing guidance for revenue, adjusted EBITDA and free cash flow. Self-pay net additions of 519,000 were the strongest second quarter result since 2007, and our quarterly self-pay churn rate of 1.6% was outstanding. The economy continues to get stronger, our execution has never been better, and demand for our differentiated content bundle remains very high,” said Jim Meyer, Chief Executive Officer, SiriusXM.

“We are focused on delivering the best, most compelling and most entertaining audio content available. Listeners are attracted to our diverse and exclusive content, such as our broadcasts of the Grateful Dead’s historic concerts in Chicago, our two live exclusive subscriber concerts by Pitbull and James Taylor, and broadcasts of leading music festivals including Coachella, Bonnaroo, and The Electric Daisy Carnival. This fall we will bring our subscribers an exclusive channel created with the talented Andy Cohen, and launch our new exclusive 24/7 original headline news channel with FOX News,” added Meyer.

SECOND QUARTER 2015 HIGHLIGHTS

“We repurchased 144 million shares for $560 million during the second quarter, and this year through yesterday we have repurchased 338 million shares for approximately $1.3 billion. Our growing free cash flow, low leverage and undrawn credit facility allow us to continue investing in growth, while providing flexibility to pursue strategic opportunities and return capital to shareholders,” noted David Frear, Chief Financial Officer, SiriusXM.

INCREASED 2015 GUIDANCE

“Our performance in the first half has been phenomenal on all fronts,” Frear added. “As a result, we are increasing guidance across the board for subscribers, revenue, adjusted EBITDA, and free cash flow. Our adjusted EBITDA guidance includes approximately $19 million of incremental expense from the reported royalty litigation settlement that will be reflected in the second half of 2015. Reported free cash flow in the second half of 2015 will exclude the cash payment we expect to make this month under the settlement.”

Our full year 2015 guidance is as follows:

SECOND QUARTER 2015 RESULTS

SIRIUS XM HOLDINGS INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(UNAUDITED)

SIRIUS XM HOLDINGS INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

SIRIUS XM HOLDINGS INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED)

Key Operating Metrics

The following table contains our key operating metrics based on our adjusted results of operations for the three and six months ended June 30, 2015 and 2014, respectively. Subscribers and subscription related revenues and expenses associated with our connected vehicle services are not included in our subscriber count or subscriber-based operating metrics:

Glossary

Adjusted EBITDA – EBITDA is defined as net income before interest and investment income (loss); interest expense, net of amounts capitalized; income tax expense and depreciation and amortization. We adjust EBITDA to exclude the impact of other income and expense, loss on extinguishment of debt, loss on change in value of derivatives as well as certain other charges discussed below. This measure is one of the primary Non-GAAP financial measures on which we (i) evaluate the performance of our on-going core operating results period over period, (ii) base our internal budgets and (iii) compensate management. As such, adjusted EBITDA is a Non-GAAP financial performance measure that excludes (if applicable): (i) certain adjustments as a result of the purchase price accounting for the Sirius and XM merger, (ii) depreciation and amortization, (iii) share-based payment expense and (iv) other significant operating expense (income) that does not relate to the on-going performance of our business. The purchase price accounting adjustments include: (i) the elimination of deferred revenue associated with the investment in XM Canada, (ii) recognition of deferred subscriber revenues not recognized in purchase price accounting, and (iii) elimination of the benefit of deferred credits on executory contracts, which are primarily attributable to third party arrangements with programming providers. We believe adjusted EBITDA is a useful measure of the underlying trend of our operating performance, which provides useful information about our business apart from the costs associated with our physical plant, capital structure and purchase price accounting. We believe investors find this Non-GAAP financial measure useful when analyzing our results and comparing our operating performance to the performance of other communications, entertainment and media companies. We believe investors use current and projected adjusted EBITDA to estimate our current and prospective enterprise value and to make investment decisions. Because we fund and build-out our satellite radio system through the periodic raising and expenditure of large amounts of capital, our results of operations reflect significant charges for depreciation expense. The exclusion of depreciation and amortization expense is useful given significant variation in depreciation and amortization expense that can

result from the potential variations in estimated useful lives, all of which can vary widely across different industries or among companies within the same industry. We believe the exclusion of share-based payment expense is useful given share-based payment expense is not directly related to the operational conditions of our business. We also believe the exclusion of the pre-1972 sound recordings legal settlement is useful as it does not represent an expense incurred as part of normal operations for the period. The portion of the pre-1972 sound recordings legal settlement related to the future period of July 2015 through December 2017 will not be excluded from adjusted EBITDA in future periods as the royalty expense will relate to the on-going performance of our business.

Adjusted EBITDA has certain limitations in that it does not take into account the impact to our statements of comprehensive income of certain expenses, including share-based payment expense and certain purchase price accounting for the Sirius and XM merger. We endeavor to compensate for the limitations of the Non-GAAP measure presented by also providing the comparable GAAP measure with equal or greater prominence and descriptions of the reconciling items, including quantifying such items, to derive the Non-GAAP measure. Investors that wish to compare and evaluate our operating results after giving effect for these costs, should refer to net income as disclosed in our unaudited consolidated statements of comprehensive income. Since adjusted EBITDA is a Non-GAAP financial performance measure, our calculation of adjusted EBITDA may be susceptible to varying calculations; may not be comparable to other similarly titled measures of other companies; and should not be considered in isolation, as a substitute for, or superior to measures of financial performance prepared in accordance with GAAP. The reconciliation of net income to the adjusted EBITDA is calculated as follows:

Adjusted Net Income and Adjusted Earnings Per Share - We define these Non-GAAP financial measures as our actual net income adjusted to exclude the impact of certain purchase price accounting adjustments, the loss on change in value of derivatives, and the pre-1972 sound recordings legal settlement, net of income tax expense. Adjusted earnings per share is derived from adjusted net income divided by our weighted average common shares outstanding. The following table reconciles our actual income before income taxes to our adjusted net income for the three and six months ended June 30, 2015 and 2014:

Adjusted Revenues and Operating Expenses - We define this Non-GAAP financial measure as our actual revenues and operating expenses adjusted to exclude the impact of certain purchase price accounting adjustments from the merger of Sirius and XM and share-based payment expense. We use this Non-GAAP financial measure to manage our business, to set operational goals and as a basis for determining performance-based compensation for our employees. The following tables reconcile our actual revenues and operating expenses to our adjusted revenues and operating expenses for the three and six months ended June 30, 2015 and 2014:

(a) Purchase price accounting adjustments included above exclude the incremental depreciation and amortization associated with the $785,000 stepped up basis in property, equipment and intangible assets as a result of the merger of Sirius and XM. The increased depreciation and amortization for the three months ended June 30, 2015 was $9,000.

(a) Purchase price accounting adjustments included above exclude the incremental depreciation and amortization associated with the $785,000 stepped up basis in property, equipment and intangible assets as a result of the merger of Sirius and XM. The increased depreciation and amortization for the three months ended June 30, 2014 was $10,000.

(a) Purchase price accounting adjustments included above exclude the incremental depreciation and amortization associated with the $785,000 stepped up basis in property, equipment and intangible assets as a result of the merger of Sirius and XM. The increased depreciation and amortization for the six months ended June 30, 2015 was $18,000.

(a) Purchase price accounting adjustments included above exclude the incremental depreciation and amortization associated with the $785,000 stepped up basis in property, equipment and intangible assets as a result of the merger of Sirius and XM. The increased depreciation and amortization for the six months ended June 30, 2014 was $20,000.

Adjusted Cash Operating Expenses - We define this Non-GAAP financial measure as our actual operating expenses adjusted to exclude the impact of certain purchase price accounting adjustments from the merger of Sirius and XM, depreciation and amortization expense, share-based payment expense, and the pre-1972 sound recordings legal settlement. The following table reconciles our actual operating expenses to our adjusted cash operating expenses for the three and six months ended June 30, 2015 and 2014:

ARPU - is derived from total earned subscriber revenue, advertising revenue and other subscription-related revenue, excluding revenue associated with our connected vehicle business, divided by the number of months in the period, divided by the daily weighted average number of subscribers for the period. Other subscription-related revenue includes the U.S. Music Royalty Fee. ARPU is calculated as follows (in thousands, except per subscriber amounts):

Average self-pay monthly churn - is defined as the monthly average of self-pay deactivations for the period divided by the average number of self-pay subscribers for the period.

Customer service and billing expenses, per average subscriber - is derived from total customer service and billing expenses, excluding connected vehicle customer service and billing expenses and share-based payment expense, divided by the number of months in the period, divided by the daily weighted average number of subscribers for the period. We believe the exclusion of share-based payment expense in our calculation of customer service and billing expenses, per average subscriber, is useful as share-based payment expense is not directly related to the operational conditions that give rise to variations in the components of our customer service and billing expenses. Customer service and billing expenses, per average subscriber, is calculated as follows (in thousands, except per subscriber amounts):

Free cash flow and free cash flow per diluted share - are derived from cash flow provided by operating activities, capital expenditures and restricted and other investment activity. The calculation for free cash flow and free cash flow per diluted share are as follows (in thousands,

except per share data):

New vehicle consumer conversion rate - is defined as the percentage of owners and lessees of new vehicles that receive our satellite radio service and convert to become self-paying subscribers after the initial promotion period. At the time satellite radio enabled vehicles are sold or leased, the owners or lessees generally receive trial subscriptions ranging from three to twelve months. We measure conversion rate three months after the period in which the trial service ends. The metric excludes rental and fleet vehicles.

Subscriber acquisition cost, per installation - or SAC, per installation, is derived from subscriber acquisition costs and margins from the sale of radios and accessories, divided by the number of satellite radio installations in new vehicles and shipments of aftermarket radios for the period. SAC, per installation, is calculated as follows (in thousands, except per installation amounts):

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About SiriusXM

Sirius XM Holdings Inc. (NASDAQ: SIRI) is the world’s largest radio broadcaster measured by revenue and has 28.4 million subscribers. SiriusXM creates and broadcasts commercial-free music; premier sports talk and live events; comedy; news; exclusive talk and entertainment; and the most comprehensive Latin music, sports and talk programming in radio. SiriusXM is available in vehicles from every major car company in the U.S. and from retailers nationwide as well as at shop.siriusxm.com. SiriusXM

programming is available through the SiriusXM Internet Radio App for smartphones and other connected devices as well as online at siriusxm.com. SiriusXM also provides premium traffic, weather, data and information services for subscribers in cars, trucks, RVs, boats and aircraft through SiriusXM Traffic™, SiriusXM Travel Link, NavTraffic®, NavWeather™, SiriusXM Aviation, SiriusXM Marine™, Sirius Marine Weather, XMWX Aviation™, and XMWX Marine™. SiriusXM holds a minority interest in SiriusXM Canada which has more than 2 million subscribers.

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This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about future financial and operating results, our plans, objectives, expectations and intentions with respect to future operations, products and services; and other statements identified by words such as “will likely result,” “are expected to,” “will continue,” “is anticipated,” “estimated,” “believe,” “intend,” “plan,” “projection,” “outlook” or words of similar meaning. Such forward-looking statements are based upon the current beliefs and expectations of our management and are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are difficult to predict and generally beyond our control. Actual results may differ materially from the results anticipated in these forward-looking statements. 

The following factors, among others, could cause actual results to differ materially from the anticipated results or other expectations expressed in the forward-looking statements: our competitive position versus other radio and audio entertainment providers; our ability to attract and retain subscribers, which is uncertain; our dependence upon the auto industry; general economic conditions; failure of our satellites, which, in most cases, are not insured; the interruption or failure of our information and communications systems; the security of the personal information about our customers; royalties we pay for music rights, which increase over time; the unfavorable outcome of pending or future litigation; our failure to realize benefits of acquisitions; rapid technological and industry change; failure of third parties to perform; changes in consumer protection laws and their enforcement; failure to comply with FCC requirements and other government regulations; and our indebtedness. Additional factors that could cause our results to differ materially from those described in the forward-looking statements can be found in our Annual Report on Form 10-K for the year ended December 31, 2014, which is filed with the Securities and Exchange Commission (the “SEC”) and available at the SEC’s Internet site (http://www.sec.gov). The information set forth herein speaks only as of the date hereof, and we disclaim any intention or obligation to update any forward looking statements as a result of developments occurring after the date of this communication.

E - SIRI

Contact Information for Investors and Financial Media:

Investors:

Hooper Stevens

212 901 6718

hooper.stevens@siriusxm.com

Media:

Patrick Reilly

212 901 6646

patrick.reilly@siriusxm.com