424B3

The information in this preliminary prospectus supplement and the accompanying prospectus is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

We are offering $ aggregate principal amount of % Senior Notes due 2025 (the “senior notes”). The senior notes will bear interest at the rate of % per year. Interest on the senior notes is payable on and of each year, beginning on , 2015. The senior notes will mature on , 2025.

We may redeem the senior notes in whole or in part at any time prior to their maturity at the redemption prices described in this prospectus supplement. If a Change of Control Triggering Event (as defined herein) occurs, we must offer to repurchase the senior notes at a redemption price equal to 101% of the principal amount, plus accrued and unpaid interest, if any, to the date of repurchase.

The senior notes will be unsecured and will rank equally with all our other unsecured senior indebtedness. The senior notes will be fully and unconditionally guaranteed on an unsecured and unsubordinated basis by Discovery Communications, Inc., our indirect parent company. The guarantee will rank equally with all other unsecured senior indebtedness of Discovery Communications, Inc. The senior notes will be issued only in denominations of $2,000 and integral multiples of $1,000 in excess thereof.

Investing in the senior notes involves risks. See “Risk factors” beginning on page S-6.

Neither the U.S. Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The underwriters expect to deliver the senior notes on or about , 2015, through the book entry system of The Depository Trust Company and its participants, including Clearstream Banking, société anonyme, and Euroclear Bank S.A./N.V.

We have not, and the underwriters have not, authorized anyone to provide any information other than that contained or incorporated by reference in this prospectus supplement, the accompanying prospectus or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We are not, and the underwriters are not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus supplement, the accompanying prospectus or any free writing prospectus is accurate only as of their respective dates. Our business, financial condition, results of operations and prospects may have changed since those dates.

This prospectus supplement relates to a prospectus that is part of a registration statement on Form S-3 that we filed with the U.S. Securities and Exchange Commission, or SEC, utilizing a “shelf” registration process. Under this shelf registration process, we may sell debt securities described in the accompanying prospectus in one or more offerings. The accompanying prospectus provides you with a general description of the debt securities we may offer. This prospectus supplement contains specific information about the terms of this offering. This prospectus supplement may add, update or change information contained in the accompanying prospectus. To the extent that information in this prospectus supplement is inconsistent with information in the accompanying prospectus, the information in this prospectus supplement replaces the information in the accompanying prospectus and you should rely on the information in this prospectus supplement. Generally, when we refer to the prospectus, we are referring to both parts of this document combined.

Except as the context otherwise requires, or as otherwise specified or used in this prospectus supplement, the terms “we,” “our,” “us,” “the Issuer” and “DCL” refer to Discovery Communications, LLC; the terms “Discovery” and “the Guarantor” refer to Discovery Communications, Inc., together with its subsidiaries (unless the context requires otherwise); and the term “DCH” refers to Discovery Communications Holding, LLC. References to “Advance/Newhouse” refer to Advance/Newhouse Programming Partnership. References in this prospectus supplement to “U.S. dollars,” “U.S. $” or “$” are to the currency of the United States of America and references to “€” and “euro” are to the single currency introduced at the third stage of the European Monetary Union pursuant to the Treaty establishing the European Community, as amended.

The distribution of this prospectus supplement and the accompanying prospectus and the offering and sale of the senior notes in certain jurisdictions may be restricted by law. Persons who come into possession of this prospectus supplement and the accompanying prospectus should inform themselves about and observe any such restrictions. This prospectus supplement and the accompanying prospectus do not constitute, and may not be used in connection with, an offer or solicitation by anyone in any jurisdiction in which such offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to any person to whom it is unlawful to make such offer or solicitation.

You should not consider any information in this prospectus supplement or the accompanying prospectus to be investment, legal or tax advice. You should consult your own counsel, accountant and other advisors for legal, tax, business, financial and related advice regarding the purchase of the senior notes. We are not making any representation to you regarding the legality of an investment in the senior notes by you under applicable investment or similar laws.

You should read and consider all information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus before making your investment decision.

Discovery files annual, quarterly and current reports, proxy statements and other information with the SEC. Its SEC filings are available to the public over the Internet at the SEC’s website at http://www.sec.gov. Copies of certain information filed by Discovery with the SEC are also available on its website at http://www.discoverycommunications.com. The website is not a part of this prospectus supplement or the accompanying prospectus. You may also read and copy any document Discovery files at the SEC’s public reference room, 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the operation of the public reference room.

The SEC allows Discovery to incorporate by reference the information Discovery files with the SEC into this prospectus supplement and the accompanying prospectus, which means that Discovery can disclose important information to you by referring you to those documents. The information incorporated by reference is considered to be part of this prospectus supplement and the accompanying prospectus, and information that Discovery files later with the SEC will automatically update and supersede the previously filed information.

Discovery incorporates by reference in this prospectus supplement and the accompanying prospectus the documents listed below, and any future filings made with the SEC under Sections 13(a), 13(c), 14, or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), other than any portions of the respective filings that were furnished, under applicable SEC rules, rather than filed, until the completion of the offering of the senior notes:

The financial statements included in the Guarantor’s 2014 Annual Report and other SEC filings, which are incorporated into this prospectus supplement and the accompanying prospectus, have been prepared on a consolidated basis and include certain financial information related to the Issuer. DCL does not produce its own separately audited standalone or consolidated financial statements (see Note 24 (Condensed Consolidating Financial Information) to the Guarantor’s consolidated financial statements incorporated in this prospectus by reference to the 2014 Annual Report). You may request a copy of these filings, at no cost, by writing or telephoning Discovery at the following address:

Exhibits to the filings will not be sent, however, unless those exhibits have specifically been incorporated by reference into such document. Any statement contained in this prospectus supplement or the accompanying prospectus or in any document incorporated by reference in this prospectus supplement will automatically update and, where applicable, supersede any earlier information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus.

Certain statements in this prospectus supplement, the accompanying prospectus and any documents incorporated by reference herein or therein may constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding Discovery’s business, marketing and operating strategies, integration of acquired businesses, new service offerings, financial prospects, and anticipated sources and uses of capital. Words such as “anticipates,” “estimates,” “expects,” “projects,” “intends,” “plans,” “believes,” and terms of similar substance used in connection with any discussion of future operating or financial performance identify forward-looking statements. Where, in any forward-looking statement, we express an expectation or belief as to future results or events, such expectation or belief is expressed in good faith and believed to have a reasonable basis, but there can be no assurance that the expectation or belief will result or be accomplished. The following is a list of some, but not all, of the factors that could cause actual results or events to differ materially from those anticipated:

For additional risk factors, refer to Item 1A, “Risk Factors” in the 2014 Annual Report, as well as “Risk factors” beginning on page S-6. These forward-looking statements and such risks, uncertainties and other factors speak only as of the date of this prospectus supplement and we expressly disclaim any obligation or undertaking to disseminate any updates or revisions to any forward-looking statement contained herein, to reflect any change in our expectations with regard thereto, or any other change in events, conditions or circumstances on which any such statement is based.

Summary

The following summary highlights information contained elsewhere in this prospectus supplement. It may not contain all of the information that you should consider before investing in the senior notes. For a more complete discussion of the information you should consider before investing in the senior notes, you should carefully read this entire prospectus supplement and the accompanying prospectus and the documents incorporated by reference herein.

Discovery Communications, Inc.

Business overview

Discovery is a global media company that provides content across multiple distribution platforms, including pay-TV, free-to-air and broadcast television, websites, digital distribution arrangements and content licensing agreements. Discovery’s portfolio of networks includes prominent television brands such as Discovery Channel, Discovery’s most widely distributed global brand, TLC, Animal Planet, Investigation Discovery, Science and Velocity (known as Turbo outside of the U.S.). In 2014, Discovery took a controlling interest in Eurosport, a leading sports entertainment pay-TV programmer across Europe and Asia. We also operate a diversified portfolio of websites, curriculum-based educational products and services, and production studios.

Discovery’s objectives are to invest in content for its networks to build viewership, optimize distribution revenue, capture advertising sales and create or reposition branded channels and businesses that can sustain long-term growth and occupy a desired content niche with strong consumer appeal. Discovery’s content is designed to target key audience demographics and the popularity of its programming creates demand on the part of advertisers and distributors. Discovery presents its operations in three segments: U.S. Networks, consisting principally of domestic television networks and websites; International Networks, consisting primarily of international television networks and websites; and Education and Other, consisting principally of curriculum-based product and service offerings and production studios.

Company history

Discovery became a public company on September 17, 2008 in connection with Discovery Holding Company (“DHC”) and Advance/Newhouse Programming Partnership (“Advance/Newhouse”) combining their respective ownership interests in DCH and exchanging those interests for interests in Discovery (the “Discovery Formation”). As a result of the Discovery Formation, Discovery became the successor reporting entity to DHC under the Exchange Act.

Discovery has three series of common stock, Series A, Series B and Series C, which trade on The NASDAQ Global Select Market under the symbols DISCA, DISCB and DISCK, respectively.

DCL, DCH and Discovery’s principal executive offices are located at One Discovery Place, Silver Spring, Maryland 20910, and the telephone number is (240) 662-2000.

Discovery Communications, LLC

DCL is an indirect, wholly-owned subsidiary of Discovery. Substantially all of the operations of Discovery are conducted through DCL. DCL was converted into a Delaware limited liability company on May 14, 2007.

Organizational structure

The following diagram illustrates, at a summary level, the ownership interests among Discovery, DCH, DCL and Advance/Newhouse subsequent to the Discovery Formation, as well as the material debt obligations of DCL as of December 31, 2014. DCH has no material debt obligations. As of December 31, 2014, Discovery’s outstanding indebtedness consisted of its guarantees of $6.715 billion aggregate principal amount of DCL’s senior notes, $229 million of DCL’s outstanding commercial paper and $38 million of borrowings under DCL’s revolving credit facility. The diagram is in general terms and does not include intermediate subsidiaries.

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Advance/Newhouse and its affiliates have a 34% beneficial ownership interest in Discovery. Advance/Newhouse and its affiliates own all of the outstanding shares of Discovery’s preferred stock, which votes with Discovery’s common stock on an as-converted basis, except for the election of common stock directors.

Risk factors

An investment in the senior notes involves risk. Before investing in the senior notes, you should carefully consider the risks described in “Risk factors” in this prospectus supplement, as well as other information included or incorporated by reference into this prospectus supplement and the accompanying prospectus, including the risk factors set forth in Item 1A, “Risk Factors” in the 2014 Annual Report before making an investment decision.

The offering

The following is a brief summary of certain terms of this offering. For a more complete description of the terms of the senior notes, see “Description of senior notes” in this prospectus supplement and “Description of debt securities” in the accompanying prospectus.

Issuer

Discovery Communications, LLC

Guarantor

Discovery Communications, Inc.

Securities offered

$ million in aggregate principal amount of % Senior Notes due 2025.

Stated maturity date

The senior notes will mature on , 2025.

Interest rate

The senior notes will bear interest at the rate of % per annum, accruing from , 2015.

Interest payment date

Interest on the senior notes will be paid on and of each year to the holders of record on . The first interest payment on the senior notes will be made on , 2015 to holders of record on , 2015.

Ranking of the senior notes

The senior notes will be DCL’s unsecured senior obligations and will rank equally in right of payment with DCL’s existing and future unsecured and unsubordinated indebtedness. The senior notes will be effectively subordinated to DCL’s secured indebtedness to the extent of the value of the assets securing that debt and effectively subordinated to any indebtedness and other liabilities of DCL’s subsidiaries. The senior notes will be senior in right of payment to all future subordinated indebtedness of DCL.

As of December 31, 2014, on a pro forma basis after giving effect to the offering of the senior notes and the application of the estimated proceeds therefrom:

•

DCL would have had approximately $6.968 billion in aggregate principal amount of indebtedness outstanding that would have ranked equally in right of payment with the senior notes;

•

DCL would have had no secured indebtedness outstanding; and

•

DCL’s subsidiaries would have had approximately $201 million in aggregate principal amount of indebtedness outstanding. The senior notes would have been effectively subordinated to the indebtedness of DCL’s subsidiaries.

Guarantee

All payments on the senior notes, including principal and interest (and premium, if any), will be fully and unconditionally guaranteed on an unsecured and unsubordinated basis by the Guarantor.

The guarantee of the senior notes will rank equally in right of payment with all other existing and future unsecured and unsubordinated indebtedness of the Guarantor. The guarantee will be effectively subordinated to the Guarantor’s

secured indebtedness to the extent of the value of the assets securing that debt and effectively subordinated to any indebtedness and other liabilities of the Guarantor’s subsidiaries.

As of December 31, 2014, on a pro forma basis after giving effect to the offering of the senior notes and the application of the estimated proceeds therefrom:

•

the Guarantor’s outstanding indebtedness consisted of its guarantee of the senior notes offered by this prospectus supplement and the accompanying prospectus and its guarantees of $6.715 billion aggregate principal amount of DCL’s other senior notes, $229 million of DCL’s outstanding commercial paper and $38 million of borrowings under DCL’s revolving credit facility; and

•

the Guarantor’s subsidiaries, other than DCL, would have had approximately $201 million in aggregate principal amount of indebtedness outstanding, all of which would have been effectively senior to the guarantee of the senior notes.

Optional redemption

Prior to , 2024, DCL may redeem the senior notes in whole or in part at any time at the redemption prices described under “Description of senior notes—Optional redemption,” plus any accrued and unpaid interest.

On and after , 2024, DCL may redeem the senior notes in whole or in part at any time prior to their maturity at a redemption price equal to 100% of the principal amount, plus any accrued and unpaid interest.

Change of control offer to repurchase

If a Change of Control Triggering Event (as defined herein) occurs, DCL must offer to repurchase the senior notes at a redemption price equal to 101% of the principal amount, plus accrued and unpaid interest, as described under “Description of senior notes—Change of control offer to repurchase.”

Sinking fund

None.

Covenants

DCL will issue the senior notes as a separate series of debt securities under the senior indenture, dated as of August 19, 2009, among DCL, the Guarantor and U.S. Bank National Association, as trustee. The senior indenture will be supplemented by a supplemental indenture to be entered into concurrently with the delivery of the senior notes (collectively, the “indenture”). The indenture restricts, among other things:

•

DCL’s ability to incur certain liens securing debt;

•

DCL’s ability to enter into sale and leaseback transactions; and

•

the ability of DCL and Discovery to sell all or substantially all of their respective assets or merge or consolidate with or into other companies.

Form and denomination

The senior notes will be issued in the form of one or more fully-registered global securities, without coupons, in denominations of $2,000 in principal amount and integral multiples of $1,000 in excess thereof. These global securities will be

deposited with the trustee as custodian for, and registered in the name of, a nominee of The Depository Trust Company (“DTC”). Except in the limited circumstances described under “Description of senior notes—Book-entry, delivery and form,” senior notes will not be issued in certificated form or exchanged for interests in global securities.

Use of proceeds

DCL intends to use the net proceeds of this offering to repay a portion of its 3.700% Senior Notes due June 2015 and for general corporate purposes, including the acquisition of other companies or businesses, repayment and refinancing of debt, working capital, capital expenditures and the repurchase by Discovery of its capital stock. See “Use of proceeds.”

Ratio of earnings to fixed charges

See “Ratio of earnings to fixed charges.”

Trustee

U.S. Bank National Association.

Material U.S. federal tax considerations

You should consult your tax advisors concerning the U.S. federal income tax consequences of owning the senior notes in light of your own specific situation, as well as consequences arising under the laws of any other taxing jurisdiction. See “Material U.S. federal tax considerations.”

Governing law

The indenture and the senior notes will be governed by the laws of the State of New York.

Further issues

DCL may from time to time, without notice to or consent of the registered holders of the senior notes, create and issue additional senior notes, which may include senior notes of the same series, ranking equally and ratably with the senior notes offered hereby in all respects, provided that if such additional senior notes are not fungible with the original senior notes for U.S. federal income tax purposes, such additional senior notes will have separate CUSIP numbers.

An investment in the senior notes involves risks. You should carefully consider the following risks, as well as the other information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus. In particular, you should carefully consider the risks and uncertainties included in Item 1A, “Risk Factors,” of the 2014 Annual Report, which is incorporated by reference in this prospectus supplement and under the caption “Forward-looking statements.” If any of the following risks actually occurs, DCL’s and Discovery’s businesses, and your investment in the senior notes, could be negatively affected. These risks and uncertainties are not the only ones they face. Additional risks and uncertainties not presently known to DCL or Discovery, or that they currently deem immaterial, may also materially and adversely affect their business operations, results of operations, financial condition or prospects. If any of these risks materialized, our ability to pay interest on the senior notes when due or to repay the senior notes at maturity could be adversely affected, and the trading price of the senior notes could decline substantially.

The senior notes will be unsecured and, therefore, will be effectively subordinated to any secured debt of DCL. In addition, the senior notes will be guaranteed on an unsecured basis by Discovery, and therefore, the guarantee will be effectively subordinated to any secured debt of Discovery.

The senior notes will not be secured by any of DCL’s assets, and Discovery’s guarantee of the senior notes will not be secured by any of Discovery’s assets. As a result, the senior notes and the guarantee are effectively subordinated to any secured debt of DCL and Discovery, respectively, in each case to the extent of the value of the assets securing such debt. In any liquidation, dissolution, bankruptcy or other similar proceeding involving DCL, the holders of any secured debt of DCL may assert rights against DCL’s secured assets in order to receive full payment of their debt before the assets may be used to pay the holders of the senior notes. Similarly, in any liquidation, dissolution, bankruptcy or other similar proceeding involving Discovery, the holders of any secured debt of Discovery may assert their rights against Discovery’s secured assets in order to receive full payment of their debt before Discovery’s assets may be used to make payments to the holders of the senior notes under the guarantee. The terms of the indenture limit DCL’s ability to create, incur, assume or permit to exist any liens to secure any debt of DCL. However, these limitations are subject to numerous exceptions. See “Description of senior notes—Certain covenants.” In addition, the terms of the indenture do not limit Discovery’s ability to create, incur, assume or permit to exist any liens to secure any debt. As of December 31, 2014, on a pro forma basis after giving effect to the offering of the senior notes and the application of the estimated proceeds therefrom, neither DCL nor Discovery had any secured debt outstanding. See “Description of senior notes—Ranking.”

DCL conducts a substantial amount of its operations, and Discovery conducts all of its operations, through subsidiaries. DCL and Discovery may be limited in their ability to access funds from their subsidiaries to service their debt, including the senior notes. In addition, the senior notes will not be guaranteed by the subsidiaries of DCL or Discovery.

DCL conducts a substantial amount of its operations, and Discovery conducts all of its operations, through subsidiaries. Accordingly, they depend on their subsidiaries’ earnings and advances or loans made by the subsidiaries to them (and potentially dividends or distributions by the subsidiaries to them) to provide funds necessary to meet their obligations, including the payments of principal, premium, if any, and interest on the senior notes. If DCL and Discovery are unable to access the cash flows of their respective subsidiaries, they would be unable to meet their debt obligations.

The subsidiaries of DCL and Discovery are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay any amounts due on the senior notes or to make funds available to them to do so. In addition, the ability of the subsidiaries of DCL and Discovery to pay dividends or otherwise transfer assets to

them is subject to various restrictions under applicable law and limitations under contractual obligations. In the event of a bankruptcy, liquidation or reorganization of any of DCL’s or Discovery’s subsidiaries, holders of their indebtedness and their trade creditors will generally be entitled to payment of their claims from the assets of those subsidiaries before any assets are made available for distribution to DCL or Discovery. In addition, the indenture allows DCL and Discovery to create new subsidiaries and invest in their subsidiaries, all of whose assets you will not have any claim against.

The senior notes will be effectively subordinated to the existing and future liabilities of DCL’s subsidiaries, and the guarantee will be effectively subordinated to the existing and future liabilities of Discovery’s subsidiaries.

DCL’s and Discovery’s equity interests in their respective subsidiaries are subordinated to any debt and other liabilities and commitments of their respective subsidiaries to the extent of the value of the assets of such subsidiaries, whether or not secured. As a result, DCL and Discovery may not have direct access to the assets of their respective subsidiaries unless those assets are transferred by dividend or otherwise to them. DCL’s right to receive assets of any of its subsidiaries upon their bankruptcy, liquidation or reorganization, and therefore the right of the holders of the senior notes to participate in those assets, will be effectively subordinated to the claims of creditors of DCL’s subsidiaries. Similarly, Discovery’s right to receive assets of any of its subsidiaries upon their bankruptcy, liquidation or reorganization will be effectively subordinated to the claims of creditors of Discovery’s subsidiaries. As a result, Discovery’s obligations under the guarantee may only be satisfied with the remaining assets of its subsidiaries after creditors’ claims against such subsidiaries’ assets have been satisfied. In addition, even if DCL or Discovery were creditors of any of their respective subsidiaries, their rights as creditors would be subordinated to any security interest in the assets of their respective subsidiaries, and any debt of their respective subsidiaries secured by those assets would be senior to that held by them. As of December 31, 2014, on a pro forma basis after giving effect to the offering of the senior notes and the application of the estimated proceeds therefrom, DCL’s subsidiaries would have had approximately $201 million of indebtedness outstanding, and Discovery’s subsidiaries would have had approximately $ billion of indebtedness outstanding, including the aggregate principal amount of the senior notes. See “Description of senior notes—Ranking.”

The senior notes are a new issue of securities with no established trading market, and DCL does not intend to list them on any securities exchange. DCL has been informed by the underwriters that they intend to make a market in the senior notes after the offering is completed. However, the underwriters are not obligated to do so and may discontinue their market-making activities at any time without notice. In addition, the liquidity of the trading market in the senior notes, and the market price quoted for the senior notes, may be adversely affected by changes in the overall market for fixed income securities and by changes in Discovery’s financial performance or prospects or in the prospects for companies in its industry generally. In addition, such market-making activity will be subject to limits imposed by the Securities Act of 1933, as amended (the “Securities Act”), and the Exchange Act. As a result, there can be no assurance that an active trading market will develop for the senior notes. If no active trading market develops, you may not be able to resell your senior notes at their fair market value or at all.

Changes in our credit ratings or the debt markets could adversely affect the trading price of the senior notes.

The condition of the financial markets and prevailing interest rates have fluctuated significantly in the past and are likely to fluctuate in the future. Such fluctuations could have an adverse effect on the trading price of the senior notes.

In addition, credit rating agencies continually review their ratings for the companies that they follow, including us. A negative change in our rating could have an adverse effect on the trading price of the senior notes.

The senior notes do not restrict the ability of either DCL or Discovery to incur additional debt, repurchase its respective securities or to take other actions that could negatively impact DCL’s or Discovery’s ability to pay its obligations under the senior notes or the guarantee, respectively.

Neither DCL nor Discovery is restricted under the terms of the senior notes from incurring additional debt or repurchasing its respective securities. In addition, the limited covenants applicable to the senior notes do not require DCL or Discovery to achieve or maintain any minimum financial results relating to its respective financial position or results of operations. The ability to recapitalize, incur additional debt and take a number of other actions that are not limited by the terms of the senior notes or the guarantee could have the effect of diminishing DCL and Discovery’s ability to make payments on the senior notes or the guarantee, respectively, when due.

We may not be able to repurchase all of the senior notes upon a change of control, which would result in a default under the senior notes.

Upon the occurrence of a Change of Control Triggering Event (as defined herein), unless we have exercised our right to redeem the senior notes, each holder of senior notes will have the right to require us to repurchase all or any part of such holder’s senior notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest, if any, to the date of repurchase. If we experience a Change of Control Triggering Event, there can be no assurance that we would have sufficient financial resources available to satisfy our obligations to repurchase the senior notes. In addition, our ability to repurchase the senior notes for cash may be limited by law, or by the terms of other agreements relating to our indebtedness outstanding at that time. Our failure to repurchase the senior notes as required under the indenture governing the senior notes would result in a default under the indenture, which could have material adverse consequences for us and for holders of the senior notes. See “Description of senior notes—Change of control offer to repurchase.”

The following table sets forth Discovery’s consolidated ratio of earnings to fixed charges for the periods indicated.

DCL expects the net proceeds from this offering of senior notes to be approximately $ million after deducting the underwriting discount and its estimated expenses related to the offering. DCL intends to use the net proceeds of this offering to repay a portion of its 3.700% Senior Notes due June 2015 and for general corporate purposes, including the acquisition of other companies or businesses, repayment and refinancing of debt, working capital, capital expenditures and the repurchase by Discovery of its capital stock.

Pending application, DCL may temporarily invest the net proceeds in short-term investments.

The following table sets forth Discovery’s capitalization, on a consolidated basis, as of December 31, 2014 on a historical basis and as adjusted to give effect to the sale of the senior notes offered hereby, after deducting the underwriting discount, but before deducting the amount of estimated offering expenses. You should read this table in conjunction with the information contained in Discovery’s “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Discovery’s consolidated financial statements and related notes in the 2014 Annual Report incorporated by reference into this prospectus supplement.

We will issue the senior notes as a separate series of debt securities under the senior indenture, dated as of August 19, 2009, among us, the Guarantor and U.S. Bank National Association, as trustee. The senior indenture will be supplemented by a supplemental indenture to be entered into concurrently with the delivery of the senior notes (collectively, the “indenture”). Because this is a summary, it does not contain all the information that may be important to you. The following description of specific terms of the senior notes is qualified in its entirety by reference to the provisions of the indenture, including the definitions of certain terms contained therein and those terms made part of the indenture by reference to the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”). Capitalized and other terms not otherwise defined in this prospectus supplement have the meanings given to them in the indenture. As used in this “Description of senior notes,” “we,” “our,” “us,” and “DCL” refer to Discovery Communications, LLC, and the “Guarantor” refers to Discovery Communications, Inc. Such terms do not, unless the context otherwise indicates, include the subsidiaries of such entities. The indenture is an exhibit to the registration statement of which the prospectus attached to this prospectus supplement is part. The terms of the senior notes include those stated in the indenture and those which are made a part of the indenture by the Trust Indenture Act. A copy of the indenture is available for inspection at the office of the trustee.

The senior notes will be issued in an initial aggregate principal amount of $ million. The senior notes will be issued only in registered form, without coupons, in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof.

The senior notes will be unsecured senior obligations of DCL and, as such, will rank equally and ratably in right of payment with all other existing and future unsecured and unsubordinated indebtedness of DCL and senior in right of payment to all future subordinated indebtedness of DCL. Because the senior notes will not be secured, they will be effectively subordinated to any future secured indebtedness of DCL to the extent of the value of the collateral securing that indebtedness. The senior notes will also be effectively subordinated to any indebtedness and other liabilities of the subsidiaries of DCL.

As of December 31, 2014, DCL had approximately $6.968 billion in aggregate principal amount of indebtedness outstanding that would have ranked equally and ratably in right of payment with the senior notes offered by this prospectus supplement and the accompanying prospectus, and DCL had no secured indebtedness outstanding, and DCL’s subsidiaries had approximately $201 million in aggregate principal amount of indebtedness outstanding, which the senior notes offered by this prospectus supplement and the accompanying prospectus would have been effectively subordinated to. See “Capitalization” and “Use of proceeds” in this prospectus supplement.

Payment of the principal of (and premium, if any, on) and interest on the senior notes and all other amounts due under the indenture, will be fully and unconditionally guaranteed on an unsecured and unsubordinated basis by the Guarantor. The guarantee of the senior notes will rank equally and ratably in right of payment with all other existing and future unsecured and unsubordinated indebtedness of the Guarantor, and senior in right of payment to all future subordinated indebtedness of the Guarantor. Because the guarantee of the senior notes will not be secured, it will be effectively subordinated to any existing and future secured indebtedness of the Guarantor to the extent of the value of the collateral securing that indebtedness. The guarantee will also be effectively subordinated to any indebtedness and other liabilities of the subsidiaries of the Guarantor, other than DCL.

As of December 31, 2014, on a pro forma basis after giving effect to the offering of the senior notes and the application of the estimated proceeds therefrom, the Guarantor’s outstanding indebtedness consisted of its guarantee of the senior notes offered by this prospectus and its guarantees of $6.715 billion aggregate principal amount of DCL’s other senior notes, $229 million of DCL’s outstanding commercial paper and $38 million of borrowings under DCL’s revolving credit facility. As of December 31, 2014, the Guarantor’s subsidiaries, other than DCL, would have had approximately $201 million in aggregate principal amount of indebtedness outstanding, all of which would have been effectively senior to the guarantee of the senior notes. See “Capitalization” and “Use of proceeds” in this prospectus supplement.

We may from time to time, without notice to, or the consent of, the registered holders of the senior notes, create and issue additional senior notes ranking equally and ratably with the senior notes offered hereby in all respects (or in all respects except for the payment of interest accruing prior to the issue date of such additional senior notes or except for the first payment of interest following the issue date of such additional senior notes), so that such additional senior notes will be consolidated and form a single series with the senior notes offered hereby and will have the same terms as to status, redemption or otherwise as the senior notes offered hereby, provided that if such additional senior notes are not fungible with the original senior notes for U.S. federal income tax purposes, such additional senior notes will have a separate CUSIP number.

Prior to , 2024, the senior notes will be redeemable in whole or in part, at the option of DCL at any time and from time to time at a redemption price equal to the greater of (i) 100% of the principal amount of the senior notes to be redeemed, and (ii) as determined by the Quotation Agent (as defined below), the sum of the present values of the remaining scheduled payments of principal and interest on the senior notes to be redeemed (not including any portion of such payments of interest accrued as of the date of redemption) discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Adjusted Treasury Rate (as defined below) plus basis points, plus accrued interest on the principal amount being redeemed to the date of redemption.

On and after , 2024, the senior notes will be redeemable at DCL’s option, in whole at any time or in part from time to time, at a redemption price equal to 100% of the principal amount of the senior notes to be redeemed, plus accrued interest on the principal being redeemed to the date of redemption.

“Adjusted Treasury Rate” means, with respect to any redemption date, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such redemption date.

“Comparable Treasury Issue” means the United States Treasury security selected by the Quotation Agent as having a maturity comparable to the remaining term of the senior notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such senior notes.

“Comparable Treasury Price” means, with respect to any redemption date, (i) the average of the Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (ii) if the trustee obtains fewer than four such Reference Treasury Dealer Quotations, the average of all such quotations.

“Reference Treasury Dealer” means (i) each of J.P. Morgan Securities LLC, Citigroup Global Markets Inc. and RBS Securities Inc. and their respective successors; provided, however, that if any of the foregoing ceases to be a primary U.S. Government securities dealer in New York City (a “Primary Treasury Dealer”), DCL will substitute therefor another Primary Treasury Dealer; and (ii) any other Primary Treasury Dealers selected by DCL.

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by the trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the trustee by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third business day preceding such redemption date.

Notice of any redemption will be mailed at least 30 days but not more than 60 days before the redemption date to each holder of the senior notes to be redeemed. Unless DCL defaults in payment of the redemption price, on and after the redemption date, interest will cease to accrue on the senior notes or portions thereof called for redemption.

If less than all of the senior notes are to be redeemed, the senior notes to be redeemed shall be selected by the trustee by such method the trustee deems to be fair and appropriate in accordance with applicable depositary procedures.

If a Change of Control Triggering Event occurs, unless we have exercised our right to redeem the senior notes in full, as described under “Optional redemption,” holders of senior notes will have the right to require us to repurchase all or a portion of such holder’s senior notes pursuant to the offer described below (the “Change of Control Offer”), at a purchase price equal to 101% of the principal amount thereof plus accrued and unpaid interest, if any, to the date of repurchase, subject to the rights of holders of senior notes on the relevant record date to receive interest due on the relevant interest payment date.

Within 30 days following the date upon which the Change of Control Triggering Event occurred, or at our option, prior to any Change of Control but after the public announcement of the pending Change of Control, we will be required to send, by first class mail, a notice to holders of senior notes, with a copy to the trustee, which notice will govern the terms of the Change of Control Offer. Such notice will state, among other things, the repurchase date, which must be no earlier than 30 days nor later than 60 days from the date such notice is mailed, other than as may be required by law (the “Change of Control Payment Date”). The notice, if mailed prior to the date of consummation of the Change of Control, may state that the Change of Control Offer is conditioned on the Change of Control being consummated on or prior to the Change of Control Payment Date. Holders of senior notes electing to have their senior notes repurchased pursuant to a Change of Control Offer will be required to surrender their senior notes, with the form entitled “Option of Holder to Elect Purchase” on the reverse of the senior note completed, to the paying agent at the address specified in the notice, or transfer their senior notes to the paying agent by book-entry transfer pursuant to the applicable procedures of the paying agent, prior to the close of business on the third business day prior to the Change of Control Payment Date.

We will not be required to make a Change of Control Offer if a third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for such an offer made by us and such third party purchases all senior notes properly tendered and not withdrawn under its offer.

We will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the senior notes as a result of a Change of Control Triggering Event. To the extent that the provisions of any such securities laws or regulations conflict with the Change of Control Offer provisions of the senior notes, we will comply with those securities laws and regulations and will not be deemed to have breached our obligations under the Change of Control Offer provisions of the senior notes by virtue of any such conflict.

The definition of “Change of Control” includes a phrase relating to the direct or indirect sale, lease, transfer, conveyance or other disposition of “all or substantially all” of the assets of the Guarantor and its subsidiaries, or DCL and its subsidiaries, taken as a whole. Although there is a limited body of case law interpreting the phrase “substantially all,” there is no precise, established definition of the phrase under applicable law. Accordingly, the ability of a holder of senior notes to require us to repurchase the senior notes as a result of a sale, lease, transfer, conveyance or other disposition of less than all of the assets of the Guarantor and its subsidiaries, or DCL and its subsidiaries, taken as a whole, to another “person” (as that term is used in Section 13(d)(3) of the Exchange Act) may be uncertain.

For purposes of the Change of Control Offer discussion above, the following definitions are applicable:

“Below Investment Grade Rating Event” with respect to the senior notes means that such senior notes become rated below Investment Grade by each Rating Agency on any date from the date of the public notice by the Guarantor or DCL of an arrangement that results in a Change of Control until the end of the 60-day period following public notice by the Guarantor or DCL of the occurrence of a Change of Control (which period will be extended so long as the rating of such senior notes is under publicly announced consideration for possible downgrade by any of the Rating Agencies); provided, however, that a Below Investment Grade Rating Event

otherwise arising by virtue of a particular reduction in rating will not be deemed to have occurred in respect of a particular Change of Control (and thus will not be deemed a Below Investment Grade Rating Event for purposes of the definition of Change of Control Triggering Event), if the Rating Agencies making the reduction in rating to which this definition would otherwise apply do not announce or publicly confirm or inform the trustee in writing at its request that the reduction was the result, in whole or in part, of any event or circumstance comprised of or arising as a result of, or in respect of, the applicable Change of Control (whether or not the applicable Change of Control has occurred at the time of the Below Investment Grade Rating Event).

“Change of Control Triggering Event” means the occurrence of both a Change of Control and a Below Investment Grade Rating Event. Notwithstanding the foregoing, no Change of Control Triggering Event will be deemed to have occurred in connection with any particular Change of Control unless and until such Change of Control has actually been consummated.

“Continuing Director” means, as of any date of determination, any member of the board of directors (or equivalent body) of the Guarantor who:

“DCL” means Discovery Communications, LLC and any successor thereto permitted under the indenture.

“Guarantor” means Discovery Communications, Inc. and any successor thereto permitted under the indenture.

“Investment Grade” means a rating of BBB- or better by S&P (or its equivalent under any successor rating category of S&P), a rating of Baa3 or better by Moody’s (or its equivalent under any successor rating category of Moody’s) and a rating of BBB- or better by Fitch (or its equivalent under any successor rating category of Fitch).

“Rating Agency” means (1) each of S&P, Moody’s and Fitch; and (2) if any of S&P, Moody’s or Fitch ceases to rate the senior notes or fails to make a rating of the senior notes publicly available for reasons outside of DCL’s control, a “nationally recognized statistical rating organization” as defined in Section 3(a)(62) of the Exchange Act, selected by us (as certified by a resolution of the board of directors of the Guarantor and reasonably acceptable to the trustee) as a replacement agency for S&P, Moody’s or Fitch, or all of them, as the case may be.

“S&P” means Standard & Poor’s Ratings Services, a division of The McGraw-Hill Companies, Inc., and its successors.

“Significant Shareholder” means each of (a) Advance/Newhouse Programming Partnership, (b) the Guarantor or any of its subsidiaries and (c) any other “person” (as that term is used in Section 13(d)(3) of the Exchange Act) if 50% or more of the Voting Stock of such person is “beneficially owned” (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, by Advance/Newhouse Programming Partnership or the Guarantor or one of its subsidiaries or any combination thereof.

“Voting Stock” of any specified person as of any date means any and all shares or equity interests (however designated) of such person that are at the time entitled to vote generally in the election of the board of directors, managers or trustees of such person, as applicable.

The indenture does not contain any provisions that would limit our ability to incur indebtedness or that would afford holders of senior notes protection in the event of a sudden and significant decline in the credit quality of the Guarantor or DCL or a takeover, recapitalization or highly leveraged or similar transaction involving the Guarantor or DCL.

DCL will not, and will not permit any subsidiary to, create, incur, assume or permit to exist any lien on any property or asset, to secure any debt of DCL, any subsidiary or any other person, or permit any subsidiary to do so, without securing the senior notes equally and ratably with such debt for so long as such debt will be so secured, subject to certain exceptions. The exceptions include:

DCL will not, and will not permit any subsidiary to, enter into any arrangement with any person pursuant to which DCL or any subsidiary leases any property that has been or is to be sold or transferred by DCL or the subsidiary to such person (a “sale and leaseback transaction”), except that a sale and leaseback transaction is permitted if DCL or such subsidiary would be entitled to secure the property to be leased (without equally and ratably securing the outstanding senior notes) in an amount equal to the present value of the lease payments with respect to the term of the lease remaining on the date as of which the amount is being determined, without regard to any renewal or extension in the lease, discounted at the rate of interest set forth or implicit in the terms of the lease, compounded semi-annually (such amount is referred to as the “attributable debt”).

In addition, permitted sale and leaseback transactions not subject to the limitation above and the provisions described in “—Limitation on liens” above include:

Notwithstanding the foregoing, a sale and leaseback transaction regarding the real property in Silver Spring, Maryland and DCL’s headquarters building located on such property will not be subject to the limitations described above and the provisions described in “—Limitation on liens.”

Neither DCL nor the Guarantor may consolidate or merge with or into, or sell, lease, convey, transfer or otherwise dispose of its property and assets substantially as an entirety to another entity unless:

In connection with any transaction that is covered by this covenant, we must deliver to the trustee an officers’ certificate and an opinion of counsel each stating that the transaction complies with the terms of the indenture.

In the case of any such consolidation, merger, sale, transfer or other conveyance, but not a lease, in a transaction in which there is a successor entity to DCL or the Guarantor, the successor entity will succeed to, and be substituted for, DCL or the Guarantor, respectively, under the indenture and DCL or the Guarantor, respectively, will be released from its obligations under the senior notes or the guarantee, as applicable, and the indenture.

and (i) in each case, the principal amount of any such indebtedness, together with the principal amount of any other such indebtedness under which there has been a Payment Default or an Acceleration Event, aggregates $100 million or more and (ii) in the case of a Payment Default, such indebtedness is not discharged and, in the case of an Acceleration Event, such acceleration is not rescinded or annulled, within 10 days after written notice has been given by the trustee or the holders of at least 25% in principal amount of all of the outstanding senior notes.

If an Event of Default (other than the bankruptcy or insolvency provision) with respect to the senior notes occurs and is continuing, the trustee or the holders of at least 25% in principal amount of all of the outstanding senior notes may declare the principal of all the senior notes to be due and payable. When such declaration is made, such principal will be immediately due and payable. If a bankruptcy or insolvency event occurs, the principal of and accrued and unpaid interest on the senior notes will immediately become due and payable without any declaration or other act on the part of the trustee or the holders of the senior notes. The holders of a majority in principal amount of senior notes may rescind such declaration or acceleration and its consequences if the rescission would not conflict with any judgment or decree and if all existing events of default have been cured or waived (other than nonpayment of principal or interest that has become due solely as a result of acceleration).

Holders of senior notes may not enforce the indenture or the senior notes, except as provided in the indenture. The trustee may require indemnity satisfactory to it before it enforces the indenture or the senior notes. Subject to certain limitations, the holders of more than 50% in principal amount of the outstanding senior notes may direct the time, method and place of conducting any proceeding for any remedy available to the trustee or exercising any trust or power of the trustee. The trustee may withhold from holders notice of any continuing default (except a default in the payment of principal or interest) if it determines that withholding notice is in their interests.

In addition to the circumstances described under “Description of Debt Securities—Certain Terms of the Senior Debt Securities—Modification and Waiver” in the accompanying prospectus, without the consent of the holder of each senior note affected thereby, an amendment or modification of, or waiver of any provision contained in, the indenture may not:

The provisions described under “Description of Debt Securities—Certain Terms of the Senior Debt Securities—Discharge and Defeasance” in the accompanying prospectus are applicable to the senior notes. If we effect covenant defeasance with respect to the senior notes as described in the accompanying prospectus, then the covenants described above under “—Certain covenants” and “— Change of control offer to repurchase” will cease to be applicable to the senior notes.

The indenture and the senior notes will be governed by, and construed in accordance with, the laws of the State of New York.

The indenture provides that, except during the continuance of an Event of Default, the trustee will perform only such duties as are specifically set forth in such indenture. If an Event of Default has occurred and is continuing, the trustee will exercise such rights and powers vested in it under the indenture and use the same degree of care and skill in its exercise as a prudent person would exercise under the circumstances in the conduct of such person’s own affairs.

The indenture and the provisions of the Trust Indenture Act, incorporated by reference therein, contain limitations on the rights of the trustee thereunder should it become a creditor of the Guarantor, DCL or any of their subsidiaries, to obtain payment of claims in certain cases or to realize on certain property received by it in respect of any such claims, as security or otherwise. The trustee is permitted to engage in other transactions, provided that if it acquires any conflicting interest (as defined in the Trust Indenture Act), it must eliminate such conflict or resign.

The senior notes will be issued as fully-registered global senior notes which will be deposited with, or on behalf of, DTC and registered, at the request of DTC, in the name of Cede & Co. Beneficial interests in the global senior notes will be represented through book-entry accounts of financial institutions acting on behalf of beneficial owners as direct or indirect participants in DTC. Investors may elect to hold their interests in the global senior notes through either DTC (in the United States) or (in Europe) through Clearstream or through Euroclear. Investors may hold their interests in the global senior notes directly if they are participants of such systems, or indirectly through organizations that are participants in these systems. Interests held through Clearstream and

Euroclear will be recorded on DTC’s books as being held by the U.S. depositary for each of Clearstream and Euroclear (the “U.S. Depositories”), which U.S. Depositories will, in turn, hold interests on behalf of their participants’ customers’ securities accounts. Beneficial interests in the global senior notes will be held in denominations of $2,000 and multiples of $1,000 in excess thereof. Except as set forth below, the global senior notes may be transferred, in whole and not in part, only to another nominee of DTC or to a successor of DTC or its nominee.

Senior notes represented by a global senior note can be exchanged for definitive securities in registered form only if:

A global senior note that can be exchanged as described in the preceding sentence will be exchanged for definitive securities issued in authorized denominations in registered form for the same aggregate amount. The definitive securities will be registered in the names of the owners of the beneficial interests in the global senior note as directed by DTC.

We will make principal and interest payments on all senior notes represented by a global senior note to the paying agent which in turn will make payment to DTC or its nominee, as the case may be, as the sole registered owner and the sole holder of the senior notes represented by a global senior note for all purposes under the indenture. Accordingly, we, the trustee and any paying agent will have no responsibility or liability for:

DTC has advised us that its current practice is to credit participants’ accounts on each payment date with payments in amounts proportionate to their respective beneficial interests in the principal amount of such global senior note as shown on DTC’s records, upon DTC’s receipt of funds and corresponding detail information. The underwriters will initially designate the accounts to be credited. Payments by participants to owners of beneficial interests in a global senior note will be governed by standing instructions and customary practices, as is the case with securities held for customer accounts registered in “street name,” and will be the sole responsibility of those participants. Book-entry notes may be more difficult to pledge because of the lack of a physical note.

The following is a discussion of material U.S. federal income tax considerations related to the purchase, ownership and disposition of the senior notes. This discussion is based upon provisions of the Internal Revenue Code of 1986, as amended (the “Code”), the U.S. Treasury Regulations promulgated thereunder (the “U.S. Treasury Regulations”), administrative rulings and judicial decisions in effect as of the date of this prospectus supplement, any of which may subsequently be changed, possibly retroactively, or interpreted differently by the Internal Revenue Service (the “IRS”), so as to result in U.S. federal income tax consequences different from those discussed below. Except where noted, this discussion deals only with senior notes held as capital assets (generally for investment purposes) by a beneficial owner who purchases senior notes on original issuance at the initial offering price at which a substantial amount of the senior notes are sold for cash to persons other than bond houses, brokers, or similar persons or organizations acting in the capacity of underwriters, placement agents or wholesalers, to which we refer as the “issue price.” This discussion does not address all aspects of U.S. federal income tax related to the purchase, ownership and disposition of the senior notes and does not address all tax consequences that may be relevant to holders in light of their personal circumstances or particular situations, such as:

If a partnership (including any entity or arrangement treated as a partnership for U.S. federal income tax purposes) holds senior notes, the tax treatment of a partner will generally depend upon the status of the partner and the activities of the partnership. A beneficial owner that is a partnership and partners in such a partnership should consult their own tax advisors.

This discussion of material U.S. federal income tax considerations is for general information only and is not tax advice for any particular investor. This discussion does not address the tax considerations arising under the laws of any non-U.S., state, or local jurisdiction. If you are considering the purchase of senior notes, you should consult your own tax advisors concerning the U.S. federal income and estate tax consequences to you in light of your own specific situation, as well as consequences arising under the laws of any other taxing jurisdiction.

In this discussion, we use the term “U.S. holder” to refer to a beneficial owner of senior notes, that is, for U.S. federal income tax purposes:

We use the term “non-U.S. holder” to describe a beneficial owner (other than a partnership or other pass-through entity) of senior notes that is not a U.S. holder. Non-U.S. holders should consult their own tax advisors to determine the U.S. federal, state, or local and any non-U.S. or other tax consequences that may be relevant to them.

Subject to the discussion below under “Additional payments,” interest on a senior note generally will be taxable to a U.S. holder as ordinary income at the time it is received or accrued in accordance with the U.S. holder’s usual method of accounting for tax purposes. It is anticipated, and this discussion assumes, that the issue price of the senior notes will be equal to the stated principal amount or, if the issue price is less than the stated principal amount, the difference will be a de minimis amount (as set forth in the applicable U.S. Treasury Regulations) and the senior notes will not be issued with original issue discount for U.S. federal income tax purposes.

In certain circumstances, we may be obligated to pay amounts in excess of stated interest or principal on the senior notes. For example, if we are required to repurchase the senior notes in connection with a Change of Control Triggering Event as described in “Description of senior notes—Change of control offer to repurchase,” we must pay a 1% premium. The possibility of such payments may implicate special rules under U.S. Treasury Regulations governing “contingent payment debt instruments.” However, the possibility that additional payments will be made will not cause the senior notes to be contingent payment debt instruments if, as of the date the senior notes are issued, there is only a remote chance that such payments will be made or certain other exceptions apply. We have determined and intend to take the position (and this discussion assumes) that the possibility of such events occurring will not subject the senior notes to the contingent payment debt instrument rules. Our position is binding on any holder unless the holder discloses its contrary position to the IRS in the manner required by applicable Treasury Regulations. Our position is not, however, binding on the IRS. U.S. holders should consult their tax advisors regarding the tax consequences if the senior notes were treated as contingent payment debt instruments. If any additional payments are in fact made, U.S. holders generally will be required to recognize such amounts as income.

A U.S. holder generally will recognize gain or loss upon the sale, redemption or other taxable disposition of a senior note equal to the difference between the amount realized and such U.S. holder’s adjusted tax basis in the senior note. For these purposes, the amount realized does not include any amount attributable to accrued interest. Amounts attributable to accrued interest are treated as interest as described under “Payments of interest” above.

A U.S. holder’s adjusted tax basis in a senior note generally will be equal to the amount that such U.S. holder paid for the senior note. Any gain or loss recognized on a taxable disposition of a senior note will generally be capital gain or loss. If, at the time of the sale, redemption or other taxable disposition of a senior note, a U.S. holder is treated as holding the senior note for more than one year, such capital gain or loss will be long-term capital gain or loss. Otherwise, such capital gain or loss will be short-term capital gain or loss. In the case of certain non-corporate U.S. holders (including individuals), long-term capital gain generally is subject to U.S. federal income tax at a lower rate than short-term capital gain, which is taxed at ordinary income rates. A U.S. holder’s ability to deduct capital losses is subject to significant limitations under the Code.

Information reporting requirements generally will apply to payments of interest on the senior notes and to the proceeds of a sale of a senior note paid to a U.S. holder unless the U.S. holder is an exempt recipient. Backup withholding at the applicable rate (currently 28%) will apply to those payments if the U.S. holder fails to provide its correct taxpayer identification number, or certification of its exempt status, (generally by providing an IRS Form W-9 or an approved substitute), or if the U.S. holder is notified by the IRS that the U.S. holder has failed to report in full payments of interest and dividend income and is therefore subject to backup withholding. Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules will be allowed as a refund or a credit against a U.S. holder’s U.S. federal income tax liability provided that the required information is timely furnished to the IRS.

In general, payments of interest on the senior notes to a non-U.S. holder will be considered “portfolio interest” and, subject to the discussions below of income effectively connected with a U.S. trade or business, backup withholding, and FATCA, will not be subject to U.S. federal income or withholding tax, provided that:

If a non-U.S. holder cannot satisfy the requirements described above, payments of interest generally will be subject to the 30% U.S. federal withholding tax unless the non-U.S. holder provides the applicable withholding agent with a properly executed (i) IRS Form W-8BEN or W-8BEN-E (or other applicable form) claiming an exemption from or reduction in withholding under an applicable income tax treaty or (ii) IRS Form W-8ECI (or other applicable form) stating that interest paid on the senior notes is effectively connected with the non-U.S. holder’s conduct of a trade or business in the United States and includable in the non-U.S. holder’s gross income.

If (i) a non-U.S. holder is engaged in a trade or business in the United States, (ii) interest on the senior notes is effectively connected with the conduct of that trade or business and (iii) if required by an applicable income tax treaty, such interest is attributable to a U.S. permanent establishment or fixed base, then, although the non-U.S. holder will be exempt from the 30% withholding tax (provided the certification requirements discussed above are satisfied), the non-U.S. holder will be subject to U.S. federal income tax on that interest on a net-income basis at regular graduated U.S. federal income tax rates, generally in the same manner as if the non-U.S. holder were a U.S. holder. In addition, if a non-U.S. holder is a foreign corporation, it may be subject to a branch profits tax equal to 30% (or a lesser rate under an applicable income tax treaty) of its effectively connected earnings and profits for the taxable year, subject to certain adjustments.

Gain realized by a non-U.S. holder on the sale, redemption or other taxable disposition of a senior note will not be subject to U.S. income tax unless:

If a non-U.S. holder is described in the first bullet point above, it will be subject to tax on the net gain derived from the sale, redemption, or other taxable disposition of the senior note, generally in the same manner as if the non-U.S. holder were a U.S. holder. In addition, if a non-U.S. holder is a foreign corporation, it may be subject to the branch profits tax equal to 30% (or a lesser rate under an applicable income tax treaty) of its effectively connected earnings and profits for the taxable year, subject to certain adjustments. If a non-U.S. holder is an individual described in the second bullet point above, such holder will be subject to a flat 30% tax (or a lesser rate under an applicable income tax treaty) on the gain derived from the sale, redemption, or other taxable disposition, which may be offset by certain U.S.-source capital losses, even though such non-U.S. holder is not considered a resident of the United States.

Generally, the applicable withholding agent must report annually to the IRS and to non-U.S. holders the amount of interest paid to non-U.S. holders and the amount of tax, if any, withheld with respect to those payments. Copies of the information returns reporting such interest payments and withholding may also be made available to the tax authorities in the country in which a non-U.S. holder resides under the provisions of an applicable income tax treaty.

In general, a non-U.S. holder will not be subject to backup withholding with respect to payments of interest that we make or the proceeds of the sale of a senior note, provided that the certification described above in the last bullet point under “Consequences to non-U.S. holders—Payments of interest” has been received and the payor does not have actual knowledge or reason to know that the non-U.S. holder is a U.S. person, as defined under the Code.

Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules will be allowed as a refund or a credit against a non-U.S. holder’s U.S. federal income tax liability, provided that the required information is furnished timely to the IRS. The backup withholding and information reporting rules are complex, and non-U.S. holders are urged to consult their own tax advisors regarding application of these rules to their particular circumstances.

Provisions of the Code commonly referred to as the Foreign Account Tax Compliance Act, or FATCA, generally impose a 30% withholding tax on payments of interest on the senior notes and, after December 31, 2016, on payments of gross proceeds from the sale or other disposition of the senior notes (including settlement of the senior notes at maturity) if made to a foreign entity unless (i) if the foreign entity is a “foreign financial institution,” the foreign entity undertakes certain due diligence, reporting, withholding, and certification obligations, (ii) if the foreign entity is not a “foreign financial institution,” the foreign entity identifies certain of its U.S. investors, or (iii) the foreign entity is otherwise exempt from FATCA. If withholding under FATCA is required on any payment related to the senior notes, investors not otherwise subject to withholding (or that otherwise would be entitled to a reduced rate of withholding) on such payment may be required to seek a refund or credit from the IRS to obtain the benefit of such exemption (or reduction). Prospective investors are encouraged to consult their own tax advisors regarding the possible implications of FATCA on their investment in the senior notes.

Subject to the terms and conditions in the underwriting agreement among us, the Guarantor and J.P. Morgan Securities LLC, Citigroup Global Markets Inc. and RBS Securities Inc., as representatives of the several underwriters named below, we have agreed to sell to each underwriter, and each underwriter has severally agreed to purchase from us, the principal amount of the senior notes that appears opposite its name in the table below:

The obligations of the underwriters under the underwriting agreement, including their agreement to purchase senior notes from us, are several and not joint. The underwriters have agreed to purchase all of the senior notes if any of them are purchased.

The underwriters initially propose to offer the senior notes to the public at the public offering price that appears on the cover page of this prospectus supplement. In addition, the underwriters may offer the senior notes to selected dealers at the public offering price minus a concession of up to % of the principal amount of the senior notes. In addition, the underwriters may allow, and those selected dealers may reallow, a concession of up to % of the principal amount of the senior notes to certain other dealers. After the initial offering, the underwriters may change the public offering price and any other selling terms. The underwriters may offer and sell senior notes through certain of their affiliates.

The following table shows the underwriting discounts and commissions that we will pay to the underwriters in connection with this offering of senior notes (expressed as a percentage of the principal amount of the senior notes):

The senior notes are a new issue of securities for which there is no established trading market, and we do not intend to list them on any securities exchange. The underwriters have advised us that they intend to make a

market in the senior notes, as permitted by applicable laws and regulations; however, the underwriters are not obligated to do so and they may discontinue their market-making activities at any time without notice. Accordingly, an active public trading market for the senior notes may not develop, and the market price and liquidity of the senior notes may be adversely affected.

In connection with the offering, the underwriters may engage in overallotment, stabilizing transactions and syndicate covering transactions. Overallotment involves sales in excess of the offering size, which creates a short position for the underwriters. Stabilizing transactions involve bids to purchase the senior notes in the open market for the purpose of pegging, fixing or maintaining the price of the senior notes. Syndicate covering transactions involve purchases of the senior notes in the open market after the distribution has been completed in order to cover short positions. Stabilizing transactions and syndicate covering transactions may cause the price of the senior notes to be higher than it would otherwise be in the absence of those transactions. The underwriters are not required to engage in stabilizing or syndicate covering transactions and if they engage in such transactions, they may discontinue them at any time.

In relation to each Member State of the European Economic Area which has implemented the Prospectus Directive (each, a “Relevant Member State”), each underwriter has represented and agreed that with effect from and including the date on which the Prospectus Directive is implemented in that Relevant Member State (the “Relevant Implementation Date”) it has not made and will not make an offer of senior notes which are the subject of the offering contemplated by this Prospectus Supplement to the public in that Relevant Member State other than:

provided that no such offer of senior notes shall require the Company or any underwriter to publish a prospectus pursuant to Article 3 of the Prospectus Directive.

For the purposes of this provision, the expression an “offer of senior notes to the public” in relation to any senior notes in any Relevant Member State means the communication in any form and by any means of sufficient information on the terms of the offer and the senior notes to be offered so as to enable an investor to decide to purchase or subscribe for the senior notes, as the same may be varied in that Member State by any measure implementing the Prospectus Directive in that Member State, the expression “Prospectus Directive” means Directive 2003/71/EC (and amendments thereto, including the 2010 PD Amending Directive, to the extent implemented in the Relevant Member State), and includes any relevant implementing measure in the Relevant Member State and the expression “2010 PD Amending Directive” means Directive 2010/73/EU.

We expect to deliver the senior notes against payment for the senior notes on or about the date specified in the last paragraph of the cover page of this prospectus supplement, which will be the fifth business day following the date of the pricing of the senior notes. Under Rule 15c6-1 of the Exchange Act, trades in the secondary market generally are required to settle in three business days, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade senior notes on the date of pricing or the next succeeding business day will be required, by virtue of the fact that the senior notes initially will settle in T+5, to specify an alternate settlement arrangement to prevent a failed settlement.

To the extent any underwriter that is not a U.S. registered broker-dealer intends to effect sales of senior notes in the United States, it will do so through one or more U.S. registered broker-dealers in accordance with the applicable U.S. securities laws and regulations.

The underwriters and certain of their affiliates have provided from time to time, and may provide in the future, investment and commercial banking and financial advisory services to us, Discovery and our respective affiliates in the ordinary course of business, including acting as underwriters or managers of our respective securities offerings. They have received and may continue to receive customary fees and commissions for these transactions. Certain of the underwriters or their affiliates currently serve as lenders and/or agents under Discovery’s revolving credit facility.

In addition, in the ordinary course of their business activities, the underwriters and their affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers. Such investments and securities activities may involve securities and/or instruments of ours or our affiliates. If any of the underwriters or their affiliates have a lending relationship with us, certain of those underwriters or their affiliates routinely hedge, and certain other of those underwriters or their affiliates may hedge, their credit exposure to us consistent with their customary risk management policies. Typically, these underwriters and their affiliates would hedge such exposure by entering into transactions which consist of either the purchase of credit default swaps or the creation of short positions in our securities, including potentially the senior notes offered hereby. Any such credit default swaps or short positions could adversely affect future trading prices of the senior notes offered hereby. The underwriters and their affiliates may also make investment recommendations and/or publish or express independent research views in respect of such securities or financial instruments and may hold, or recommend to clients that they acquire, long and/or short positions in such securities and instruments.

Certain legal matters in connection with the senior notes offered hereby and the guarantee will be passed upon for us by Wilmer Cutler Pickering Hale and Dorr LLP and for the underwriters by Davis Polk & Wardwell LLP.

The consolidated financial statements and management’s assessment of the effectiveness of internal control over financial reporting (which is included in Management’s Report on Internal Control over Financial Reporting) incorporated in this prospectus by reference to the Annual Report on Form 10-K for the year ended December 31, 2014 have been so incorporated in reliance on the report, which as of December 31, 2014 contains an explanatory paragraph on the effectiveness of internal control over financial reporting due to the exclusion of certain elements of internal control over financial reporting of the Eurosport International business that the registrant acquired, of PricewaterhouseCoopers LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

(guaranteed to the extent provided herein by Discovery Communications Holding, LLC

We may issue securities from time to time in one or more offerings. This prospectus describes the general terms of these securities and the general manner in which these securities will be offered. We will provide the specific terms of these securities in supplements to this prospectus. The prospectus supplements will also describe the specific manner in which these securities will be offered and may also supplement, update or amend information contained in this document. You should read this prospectus and any applicable prospectus supplement before you invest.

We may offer these securities in amounts, at prices and on terms determined at the time of offering. The securities may be sold directly to you, through agents or through underwriters and dealers. If agents, underwriters or dealers are used to sell the securities, we will name them and describe their compensation in a prospectus supplement.

Discovery Communications, Inc. has three series of common stock, Series A, Series B and Series C, which trade on the Nasdaq Global Select Market under the symbols DISCA, DISCB and DISCK, respectively.

Investing in these securities involves certain risks. See the information included and incorporated by reference in this prospectus and the accompanying prospectus supplement for a discussion of the factors you should carefully consider before deciding to purchase these securities.

Our principal executive offices are located at One Discovery Place, Silver Spring, Maryland 20910, and our telephone number is (240) 662-2000.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

Unless the context otherwise indicates, references in this prospectus to “we”, “our” and “us” refer, collectively, to Discovery Communications, Inc., a Delaware corporation, and its consolidated subsidiaries; the term “Discovery” means Discovery Communications, Inc.; the term “DCH” means Discovery Communications Holding, LLC, a Delaware limited liability company that is an indirect wholly-owned consolidated subsidiary of Discovery; and the term “DCL” means Discovery Communications, LLC, a Delaware limited liability company that is an indirect wholly-owned consolidated subsidiary of Discovery.

This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission, which we refer to as the SEC, utilizing a “shelf” registration process. Under this shelf registration process, we may from time to time sell any combination of the securities described in this prospectus in one or more offerings. Discovery may offer any of the following securities: debt securities, Series A common stock, Series C common stock, preferred stock, depositary shares, stock purchase contracts, stock purchase units and warrants. DCH may offer debt securities guaranteed by DCL and/or Discovery. DCL may offer debt securities guaranteed by DCH and/or Discovery.

This prospectus provides you with a general description of the securities we may offer. Each time we sell securities, we will provide one or more prospectus supplements that will contain specific information about the terms of the offering. The prospectus supplement may also add, update or change information contained in this prospectus. You should read both this prospectus and the accompanying prospectus supplement together with the additional information described under the heading “Where You Can Find More Information” beginning on page 2 of this prospectus.

You should rely only on the information contained in or incorporated by reference in this prospectus, any accompanying prospectus supplement or in any related free writing prospectus filed by us with the SEC. We have not authorized anyone to provide you with different information. This prospectus and the accompanying prospectus supplement do not constitute an offer to sell or the solicitation of an offer to buy any securities other than the securities described in the accompanying prospectus supplement or an offer to sell or the solicitation of an offer to buy such securities in any circumstances in which such offer or solicitation is unlawful. You should assume that the information appearing in this prospectus, any prospectus supplement and the documents incorporated by reference is accurate only as of their respective dates. Our business, financial condition, results of operations and prospects may have changed materially since those dates.

Discovery files annual, quarterly and current reports, proxy statements and other information with the SEC. Its SEC filings are available to the public over the Internet at the SEC’s website at http://www.sec.gov. Copies of certain information filed by Discovery with the SEC are also available on its website at http://www.discoverycommunications.com. Discovery’s website is not a part of this prospectus and is not incorporated by reference into this prospectus. You may also read and copy any document Discovery files at the SEC’s public reference room, 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the operation of the public reference room.

This prospectus is part of a registration statement we filed with the SEC. This prospectus omits some information contained in the registration statement in accordance with SEC rules and regulations. You should review the information and exhibits in the registration statement for further information on us and our consolidated subsidiaries and the securities we are offering. Statements in this prospectus concerning any document we filed as an exhibit to the registration statement or that we otherwise filed with the SEC are not intended to be comprehensive and are qualified by reference to these filings. You should review the complete document to evaluate these statements.

The SEC allows us to incorporate by reference much of the information we file with them, which means that we can disclose important information to you by referring you to those publicly available documents. The information that we incorporate by reference in this prospectus is considered to be part of this prospectus. Because we are incorporating by reference future filings with the SEC, this prospectus is continually updated and those future filings may modify or supersede some of the information included or incorporated in this prospectus. This means that you must look at all of the SEC filings that we incorporate by reference to determine if any of the statements in this prospectus or in any document previously incorporated by reference have been modified or superseded. This prospectus incorporates by reference the documents listed below (File No. 001-34177) and any future filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended, or the Exchange Act (in each case, other than those documents or the portions of those documents not deemed to be filed) until the offering of the securities under the registration statement is terminated or completed:

You may request a copy of these filings, at no cost, by writing or telephoning us at the following address or telephone number:

Certain statements included or incorporated by reference in this prospectus, as well as in other public statements we may make, constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding our business, marketing and operating strategies, integration of acquired businesses, new service offerings, financial prospects and anticipated sources and uses of capital. Words such as “anticipates,” “estimates,” “expects,” “projects,” “intends,” “plans,” “believes” and words and terms of similar substance used in connection with any discussion of future operating or financial performance identify forward-looking statements. Where, in any forward-looking statement, we express an expectation or belief as to future results or events, such expectation or belief is expressed in good faith and believed to have a reasonable basis, but there can be no assurance that the expectation or belief will result or be achieved or accomplished. The following is a list of some, but not all, of the factors that could cause actual results or events to differ materially from those anticipated:

Therefore, actual outcomes and results may differ materially from what is expressed in our forward-looking statements and from our historical financial results due to the factors discussed above and elsewhere in this prospectus or in our other SEC filings. Forward-looking statements should not be relied upon as representing our expectations or beliefs as of any time subsequent to the time this prospectus is filed with the SEC. Unless specifically required by law, we undertake no obligation to revise the forward-looking statements contained in this prospectus to reflect events after the time it is filed with the SEC. The factors discussed above are not intended to be a complete summary of all risks and uncertainties that may affect our businesses. We cannot anticipate all potential economic, operational and financial developments that may adversely affect our operations and our financial results.

Forward-looking statements should not be viewed as predictions, and should not be the primary basis upon which investors evaluate us. Any investor in Discovery, DCH or DCL should consider all risks and uncertainties disclosed in our SEC filings, described above under the section entitled “Where You Can Find More Information,” all of which are accessible on the SEC’s website at www.sec.gov. We note that all website addresses given in this prospectus are for information only and are not intended to be an active link or to incorporate any website information into this document.

Discovery is a global nonfiction media and entertainment company that provides programming across multiple distribution platforms throughout the world. We distribute customized programming, in over 40 languages, in the U.S. and over 200 other countries and territories. Our global portfolio of networks includes prominent television brands such as Discovery Channel, one of the first nonfiction networks and our most widely distributed global brand, TLC and Animal Planet. We also have a diversified portfolio of websites and other digital media services, develop and sell curriculum-based products and services and provide postproduction audio services.

Our objectives are to invest in content for our networks to build viewership, optimize distribution revenue, capture advertising sales and create or reposition additional branded channels and businesses that can sustain long-term growth and occupy a desired programming niche with strong consumer appeal. Our strategy is to optimize the distribution, ratings and profit potential of each of our branded networks. In addition to growing distribution and advertising revenues for our branded networks, we are extending content distribution across new platforms, including brand-aligned websites, mobile devices, VOD, broadband channels and on-line streaming, which provide promotional platforms for our television programming and serve as additional outlets for advertising and distribution revenues.

Our content spans genres including science, exploration, survival, natural history, sustainability, technology, docu-series, anthropology, paleontology, history, space, archaeology, health and wellness, engineering, adventure, lifestyles, forensics, civilizations and current events. Our programming tends to maintain its relevance for an extended period of time. As a result, a significant amount of our content translates well across international borders and is made even more accessible through extensive use of dubbing and subtitles in local languages. We also create local programming tailored to individual market preferences.

We have an extensive library of content and own all or most rights to the majority of our programming and footage, which enables us to exploit our library to launch new brands and services into new markets quickly. Our programming can be re-edited and updated in a cost-effective manner to provide topical versions of subject matter that can be utilized around the world. Substantially all of our programming is produced in high definition format.

Our media content is designed to target key audience demographics and the popularity of our programming creates a reason for advertisers to purchase commercial time on our channels. Audience ratings are a key driver in generating advertising revenue and creating demand on the part of cable television operators, direct-to-home satellite operators and other content distributors to deliver our programming to their customers.

Discovery has three series of common stock, Series A, Series B and Series C, which trade on the Nasdaq Global Select Market under the symbols DISCA, DISCB and DISCK, respectively. Its principal executive offices are located at One Discovery Place, Silver Spring, MD 20190, and the telephone number is (240) 662-2000.

We became a public company on September 17, 2008 in connection with Discovery Holding Company (“DHC”) and Advance/Newhouse Programming Partnership (“Advance/Newhouse”) combining their respective ownership interests in DCH and exchanging those interests with and into Discovery (the “Discovery Formation”). DCH owned and operated various television networks, website properties and other digital media services throughout the world and sold curriculum-based education products and services. As a result of the Discovery Formation, DHC and DCH became wholly-owned subsidiaries of Discovery, with Discovery becoming the successor reporting entity to DHC under the Exchange Act. We were incorporated in Delaware on April 28, 2008.

DCH is an indirect wholly-owned subsidiary of Discovery and the sole owner of DCL. DCH was organized in Delaware on April 13, 2007. Its principal executive offices are located at One Discovery Place, Silver Spring, MD 20910, and its telephone number is (240) 662-2000.

DCL is an indirect wholly-owned subsidiary of Discovery. Substantially all of the operations of Discovery are conducted through DCL. DCL was converted into a Delaware limited liability company on May 14, 2007. Its principal executive offices are located at One Discovery Place, Silver Spring, MD 20910, and its telephone number is (240) 662-2000.

The following table sets forth selected financial information which has been revised to reflect the adoption of a new accounting principle. Effective January 1, 2012, we adopted the Financial Accounting Standards Board’s Accounting Standards Update (“ASU”) No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income, as amended by ASU 2011-12, Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05. As described in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2012, these updates revise the manner in which entities present comprehensive income in their financial statements. The following selected financial information revises our annual information for the periods presented to apply the new presentation required by this pronouncement.

The following table sets forth the ratio of earnings to fixed charges and the ratio of earnings to combined fixed charges and preferred stock dividends for Discovery for the periods indicated.

We intend to use the net proceeds from the sale of the securities for general corporate purposes unless otherwise indicated in the applicable prospectus supplement. General corporate purposes may include the acquisition of companies or businesses, repayment and refinancing of debt, working capital and capital expenditures. We may temporarily invest the net proceeds in investment-grade, interest-bearing securities until they are used for their stated purpose. We have not determined the amount of net proceeds to be used specifically for such purposes. As a result, management will retain broad discretion over the allocation of net proceeds.

Discovery, DCH and/or DCL, each of which we refer to in this section as an issuer, may offer, from time to time, unsecured general obligations, which may be senior or subordinated. We refer to the senior unsecured general obligations as senior debt securities, the subordinated unsecured general obligations as the subordinated debt securities and the senior debt securities and the subordinated debt securities collectively as debt securities. The following description summarizes the general terms and provisions of the debt securities to which any prospectus supplement may relate. We will describe the specific terms of the debt securities and the extent, if any, to which the general provisions summarized below may apply to any series of debt securities in the prospectus supplement relating to the series and any applicable free writing prospectus that we authorize to be delivered.

DCL may issue senior debt securities from time to time, in one or more series, under the senior indenture, dated as of August 19, 2009 (as amended or supplemented from time to time, the “DCL senior indenture”) among DCL, Discovery, as guarantor, and U.S. Bank National Association, as senior trustee. Discovery and DCH may issue senior debt securities from time to time, in one or more series, under a senior indenture to be entered into between the applicable issuer and a senior trustee named in a prospectus supplement. The DCL senior indenture and forms of senior indenture for Discovery and DCH are filed as exhibits to this registration statement. Each issuer may issue subordinated debt securities from time to time, in one or more series, under a subordinated indenture between the applicable issuer and a subordinated trustee named in a prospectus supplement. The forms of subordinated indenture for each issuer are filed as exhibits to this registration statement. If Discovery, DCH and/or DCL guarantees the senior debt securities or subordinated debt securities issued by any of the other issuers, that guarantor will also become a party to the issuer’s senior indenture or subordinated indenture, as applicable. The DCL senior indenture, the forms of senior indenture for Discovery and DCH and the subordinated indentures are referred to individually as an indenture and collectively as the indentures and, together, the senior trustee and the subordinated trustee are referred to as the debt trustees. This prospectus briefly outlines some of the provisions of the indentures. The following summary of the material provisions of the indentures is qualified in its entirety by the provisions of the indentures, including definitions of certain terms used in the indentures. Wherever we refer to particular sections or defined terms of the indentures, those sections or defined terms are incorporated by reference in this prospectus or the applicable prospectus supplement. You should review the indentures that are filed as exhibits to the registration statement of which this prospectus forms a part for additional information.

None of the indentures will limit the amount of debt securities that may be issued by any of the issuers. The applicable indenture will provide that debt securities may be issued up to an aggregate principal amount authorized from time to time by the issuer and may be payable in any currency or currency unit designated by the issuer or in amounts determined by reference to an index.

The senior debt securities will constitute unsecured and unsubordinated obligations of the issuer and will rank pari passu with the issuer’s other unsecured and unsubordinated obligations. The subordinated debt securities will constitute the issuer’s unsecured and subordinated obligations and will be junior in right of payment to the issuer’s Senior Indebtedness (including senior debt securities), as described under the heading “—Certain Terms of the Subordinated Debt Securities—Subordination.”

The debt securities will be the issuer’s unsecured obligations. Any secured debt or other secured obligations will be effectively senior to the debt securities to the extent of the value of the assets securing such debt or other obligations.

The applicable prospectus supplement and/or free writing prospectus will include any additional or different terms of the debt securities being offered, including the following terms:

The issuer may from time to time, without notice to or the consent of the holders of any series of debt securities, create and issue further debt securities of any such series ranking equally with the debt securities of such series in all respects (or in all respects other than the payment of interest accruing prior to the issue date of such further debt securities or except for the first payment of interest following the issue date of such further debt securities). Such further debt securities may be consolidated and form a single series with the debt securities of such series and have the same terms as to status, redemption or otherwise as the debt securities of such series.

You may present debt securities for exchange and you may present debt securities for transfer in the manner, at the places and subject to the restrictions set forth in the debt securities and the applicable prospectus supplement. The issuer will provide you those services without charge, although you may have to pay any tax or other governmental charge payable in connection with any exchange or transfer, as set forth in the indenture.

Debt securities will bear interest at a fixed rate or a floating rate. Debt securities bearing no interest or interest at a rate that at the time of issuance is below the prevailing market rate (original issue discount securities) may be sold at a discount below their stated principal amount. U.S. federal income tax considerations applicable

to any such discounted debt securities or to certain debt securities issued at par which are treated as having been issued at a discount for U.S. federal income tax purposes will be described in the applicable prospectus supplement.

The issuer may issue debt securities with the principal amount payable on any principal payment date, or the amount of interest payable on any interest payment date, to be determined by reference to one or more currency exchange rates, securities or baskets of securities, commodity prices or indices. You may receive a payment of principal on any principal payment date, or a payment of interest on any interest payment date, that is greater than or less than the amount of principal or interest otherwise payable on such dates, depending on the value on such dates of the applicable currency, security or basket of securities, commodity or index. Information as to the methods for determining the amount of principal or interest payable on any date, the currencies, securities or baskets of securities, commodities or indices to which the amount payable on such date is linked and certain related tax considerations will be set forth in the applicable prospectus supplement.

Covenants. Unless otherwise indicated in a prospectus supplement, the senior debt securities will not contain any financial or restrictive covenants, including covenants restricting either the issuer or any of the issuer’s subsidiaries from incurring, issuing, assuming or guarantying any indebtedness secured by a lien on any of the issuer’s or its subsidiaries’ property or capital stock, or restricting either the issuer or any of the issuer’s subsidiaries from entering into sale and leaseback transactions.

Consolidation, Merger and Sale of Assets. Unless we indicate otherwise in a prospectus supplement, the issuer may not consolidate with or merge into any other person, in a transaction in which the issuer is not the surviving corporation, or convey, transfer or lease its properties and assets substantially as an entirety to any person, unless:

No Protection in the Event of a Change in Control. Unless otherwise indicated in a prospectus supplement with respect to a particular series of senior debt securities, the senior debt securities will not contain any provisions which may afford holders of the senior debt securities protection in the event the issuer has a change in control or in the event of a highly leveraged transaction (whether or not such transaction results in a change in control).

Events of Default. An event of default for any series of senior debt securities is defined under the senior indenture as being:

The default by the issuer under any other debt, including any other series of debt securities, is not a default under the senior indenture.

If an event of default other than an event of default specified in the last two bullet points above occurs with respect to a series of senior debt securities and is continuing under the senior indenture, then, and in each and every such case, either the trustee or the holders of not less than 25% in aggregate principal amount of such series then outstanding under the senior indenture (each such series voting as a separate class) by written notice to the issuer and to the trustee, if such notice is given by the holders, may, and the trustee at the request of such holders shall, declare the principal amount of and accrued interest, if any, on such senior debt securities to be immediately due and payable.

If an event of default specified in the last two bullet points above occurs with respect to the issuer and is continuing, the entire principal amount of, and accrued interest, if any, on each series of senior debt securities then outstanding shall become immediately due and payable.

Upon a declaration of acceleration, the principal amount of and accrued interest, if any, on such senior debt securities shall be immediately due and payable. Unless otherwise specified in the prospectus supplement relating to a series of senior debt securities originally issued at a discount, the amount due upon acceleration shall include only the original issue price of the senior debt securities, the amount of original issue discount accrued to the date of acceleration and accrued interest, if any.

Upon certain conditions, declarations of acceleration may be rescinded and annulled and past defaults may be waived by the holders of at least a majority in aggregate principal amount of all the senior debt securities of such series affected by the default, each series voting as a separate class. Furthermore, subject to various provisions in the senior indenture, the holders of at least a majority in aggregate principal amount of a series of senior debt securities, by notice to the trustee, may waive an existing default or event of default with respect to such senior debt securities and its consequences, except a default in the payment of principal of or interest on such senior debt securities or in respect of a covenant or provision of the senior indenture which cannot be modified or amended without the consent of the holders of each such senior debt security. Upon any such waiver, such default shall cease to exist, and any event of default with respect to such senior debt securities shall be deemed to have been cured, for every purpose of the senior indenture; but no such waiver shall extend to any subsequent or other default or event of default or impair any right consequent thereto. For information as to the waiver of defaults, see “—Modification and Waiver.”

The holders of at least a majority in aggregate principal amount of a series of senior debt securities may direct the time, method and place of conducting any proceeding for any remedy available to the trustee or

exercising any trust or power conferred on the trustee with respect to such senior debt securities. However, the trustee may refuse to follow any direction that conflicts with law or the senior indenture that may involve the trustee in personal liability, or that the trustee determines in good faith may be unduly prejudicial to the rights of holders of such series of senior debt securities not joining in the giving of such direction and may take any other action it deems proper that is not inconsistent with any such direction received from holders of such series of senior debt securities. A holder may not pursue any remedy with respect to the senior indenture or any series of senior debt securities unless:

These limitations, however, do not apply to the right of any holder of a senior debt security to receive payment of the principal of or interest, if any, on such senior debt security, or to bring suit for the enforcement of any such payment, on or after the due date for the senior debt securities, which right shall not be impaired or affected without the consent of the holder.

The senior indenture requires certain of the issuer’s officers to certify, on or before a fixed date in each year in which any senior debt security is outstanding, as to their knowledge of the issuer’s compliance with all conditions and covenants under the senior indenture.

Discharge and Defeasance. The senior indenture provides that the issuer (a) may be discharged from its obligations in respect of the debt securities (“defeasance and discharge”), or (b) may cease to comply with certain restrictive covenants (“covenant defeasance”), including those described under “—Consolidation, Merger and Sale of Assets”, when the issuer has irrevocably deposited with the trustee, in trust, (i) sufficient funds to pay the principal of and interest to stated maturity (or redemption) on, the debt securities or (ii) such amount of direct obligations of, or obligations guaranteed by, the government which issued the currency in which the debt securities of such series are denominated, as will, together with the predetermined and certain income to accrue thereon without consideration of any reinvestment, be sufficient to pay when due the principal of and interest to stated maturity (or redemption) on, the debt securities. Such defeasance and discharge and covenant defeasance are conditioned upon, among other things, the issuer’s delivery of an opinion of counsel that the holders of the debt securities will not recognize income, gain or loss for United States federal income tax purposes as a result of such defeasance, and will be subject to tax in the same manner as if no defeasance and discharge or covenant defeasance, as the case may be, had occurred. In the case of defeasance and discharge only, such opinion of counsel must be based on a ruling of the Internal Revenue Service or other change in applicable federal income tax law.

Modification and Waiver. The issuer and the trustee may amend or supplement the senior indenture or the senior debt securities without the consent of any holder:

Other amendments and modifications of the senior indenture or the senior debt securities issued may be made, and the issuer’s compliance with any provision of the senior indenture with respect to any series of senior debt securities may be waived, with the consent of the holders of not less than a majority of the aggregate principal amount of the outstanding senior debt securities of all series affected by the amendment or modification (voting as one class); provided, however, that each affected holder must consent to any modification, amendment or waiver that:

It shall not be necessary for the holders to approve the particular form of any proposed amendment, supplement or waiver, but it shall be sufficient if the holders’ consent approves the substance thereof. After an amendment, supplement or waiver under this section of the senior indenture becomes effective, the trustee must give to the holders affected thereby certain notice briefly describing the amendment, supplement or waiver. Any failure by the trustee to give such notice, or any defect therein, shall not, however, in any way impair or affect the validity of any such supplemental indenture or waiver.

No Personal Liability of Incorporators, Stockholders, Officers, Directors, Members. The senior indenture provides that no recourse shall be had under or upon any obligation, covenant or agreement of the issuer’s in the senior indenture or any supplemental indenture, or in any of the senior debt securities or because of the creation of any indebtedness represented thereby, against any incorporator, stockholder, officer, director or member, past, present or future, of the issuer or of any predecessor or successor entity thereof under any law, statute or constitutional provision or by the enforcement of any assessment or by any legal or equitable proceeding or otherwise. Each holder, by accepting the senior debt securities, waives and releases all such liability.

Concerning the Trustee. The senior indenture provides that, except during the continuance of a default, the trustee will not be liable, except for the performance of such duties as are specifically set forth in the senior indenture. If an event of default has occurred and is continuing, the trustee will exercise such rights and powers vested in it under the senior indenture and will use the same degree of care and skill in its exercise as a prudent person would exercise under the circumstances in the conduct of such person’s own affairs.

The indenture and the provisions of the Trust Indenture Act of 1939, as amended, incorporated by reference therein, contain limitations on the rights of the trustee thereunder should it become a creditor of Discovery, DCH, DCL or any of their subsidiaries, to obtain payment of claims in certain cases or to realize on certain property received by it in respect of any such claims, as security or otherwise. The trustee is permitted to engage in other transactions, provided that if it acquires any conflicting interest (as defined), it must eliminate such conflict or resign.

The issuer may have normal banking relationships with the trustee under the senior indenture in the ordinary course of business.

Unclaimed Funds. All funds deposited with the trustee or any paying agent for the payment of principal, interest, premium or additional amounts in respect of the senior debt securities that remain unclaimed for two years after the maturity date of such senior debt securities will be repaid to us. Thereafter, any right of any noteholder to such funds shall be enforceable only against us, and the trustee and paying agents will have no liability therefor.

Governing Law. The senior indenture and the debt securities will be governed by, and construed in accordance with, the internal laws of the State of New York.

Other than the terms of the subordinated indenture and subordinated debt securities relating to subordination and the remedies and procedures upon an event of default described above under “— Certain Terms of the Senior Debt Securities — Events of Default,” or otherwise as described in the prospectus supplement relating to a particular series of subordinated debt securities, the terms of the subordinated indenture and subordinated debt securities are identical in all material respects to the terms of the senior indenture and senior debt securities.

Additional or different subordination terms may be specified in the prospectus supplement applicable to a particular series.

Subordination. The indebtedness evidenced by the subordinated debt securities is subordinate to the prior payment in full of all of the issuer’s Senior Indebtedness, as defined in the subordinated indenture. During the continuance beyond any applicable grace period of any default in the payment of principal, premium, interest or

any other payment due on any of the issuer’s Senior Indebtedness, the issuer may not make any payment of principal of, or premium, if any, or interest on the subordinated debt securities. In addition, upon any payment or distribution of the issuer’s assets upon any dissolution, winding up, liquidation or reorganization, the payment of the principal of, or premium, if any, and interest on the subordinated debt securities will be subordinated to the extent provided in the subordinated indenture in right of payment to the prior payment in full of all the issuer’s Senior Indebtedness. Because of this subordination, if the issuer dissolves or otherwise liquidates, holders of its subordinated debt securities may receive less, ratably, than holders of the issuer’s Senior Indebtedness. The subordination provisions do not prevent the occurrence of an event of default under the subordinated indenture.

The term “Senior Indebtedness” of a person means with respect to such person the principal of, premium, if any, interest on, and any other payment due pursuant to any of the following, whether outstanding on the date of the subordinated indenture or incurred by that person in the future:

unless, in the case of any particular indebtedness, lease, renewal, extension or refunding, the instrument or lease creating or evidencing it or the assumption or guarantee relating to it expressly provides that such indebtedness, lease, renewal, extension or refunding is not superior in right of payment to the subordinated debt securities. The issuer’s senior debt securities constitute Senior Indebtedness for purposes of the subordinated debt indenture.

Parent Guarantee. Unless the applicable prospectus supplement states otherwise, Discovery will fully and unconditionally guarantee (the “Discovery parent guarantee”) to each holder of debt securities issued by DCH or DCL pursuant to this prospectus the due and punctual payment of the principal of, and any premium and any interest on, those debt securities, when and as the same becomes due and payable, whether at maturity, upon acceleration or otherwise. In addition, if indicated in the applicable prospectus supplement, DCH will fully and unconditionally guarantee (the “DCH parent guarantee” and together with the Discovery parent guarantee, the “parent guarantees”) the due and punctual payment of the principal of, and any premium and any interest on debt securities issued by DCL. The related prospectus supplement will describe the parent guarantees, including the terms under which the parent guarantees will be provided. The parent guarantees will be unsecured and, with respect to parent guarantees of senior debt securities, will rank equally with all other unsecured and unsubordinated obligations of DCH and/or Discovery as applicable, and with respect to parent guarantees of subordinated debt securities, will rank equally with all other unsecured and subordinated obligations of DCH and/or Discovery as applicable.

Subsidiary Guarantee. Unless otherwise indicated in a prospectus supplement, none of the debt securities will be guaranteed by any subsidiaries of the issuer. If the applicable prospectus supplement specifies otherwise, however, DCL may fully and unconditionally guarantee to each holder of debt securities issued by Discovery or DCH and DCL (each, a “subsidiary guarantor”) may fully and unconditionally guarantee to each holder of debt

securities issued by Discovery (each, a “subsidiary guarantee”), the due and punctual payment of the principal of, and any premium and any interest on, those debt securities, when and as the same becomes due and payable, whether at maturity, upon acceleration or otherwise. None of the issuers’ other subsidiaries is now required, or will be required by the indentures, to guarantee any series of the debt securities. The related prospectus supplement will describe the subsidiary guarantee and the terms under which such subsidiary guarantee will be provided. The subsidiary guarantees will be unsecured and, with respect to subsidiary guarantees of senior debt securities, will rank equally with all other unsecured and unsubordinated obligations of the respective subsidiary guarantor, and, with respect to the subsidiary guarantee of subordinated debt securities, will rank equally with all other unsecured and subordinated obligations of the respective subsidiary guarantor.

The subsidiary guarantees will provide that the obligations of each subsidiary guarantor will be limited as necessary to prevent that subsidiary guarantee from constituting a fraudulent conveyance. The subsidiary guarantees of the debt securities may be subject to review under United States federal or state fraudulent transfer law, which could limit their enforceability. To the extent that a United States court were to find that (x) the subsidiary guarantees were incurred with intent to hinder, delay or defraud any present or future creditor, or a subsidiary guarantor contemplated insolvency with a design to prefer one or more creditors to the exclusion in whole or in part of others, or (y) the subsidiary issuing the subsidiary guarantee did not receive fair consideration or reasonably equivalent value for issuing its subsidiary guarantees and any subsidiary guarantor (i) was insolvent, (ii) was rendered insolvent by reason of the issuance of the subsidiary guarantees, (iii) was engaged or about to engage in a business or transaction for which the remaining assets of a subsidiary guarantor constituted unreasonably small capital to carry on its business or (iv) intended to incur, or believed that it would incur, debts beyond its ability to pay such debts as they matured, that court could avoid or subordinate the subsidiary guarantees in favor of a subsidiary guarantor’s other creditors. If the subsidiary guarantees were subordinated by a court, payments of principal and interest on the debt securities generally would be subject to the prior payment in full of all other indebtedness of the subsidiary guarantor. Among other things, a legal challenge of the subsidiary guarantees on fraudulent conveyance grounds may focus on the benefits, if any, realized by the subsidiary guarantor as a result of the issuance by the issuer of the debt securities. The extent (if any) to which a particular subsidiary guarantor may be deemed to have received such benefits may depend on the use of the proceeds of any offering of debt securities which are guaranteed by the subsidiary guarantors, including the extent (if any) to which such proceeds or benefits therefrom are contributed to the subsidiary guarantor. The measure of insolvency for purposes of the foregoing will vary depending on the law of the applicable jurisdiction. Generally, however, an entity would be considered insolvent if the sum of its debts (including contingent or unliquidated debts) is greater than all of its property at a fair valuation or if the present fair saleable value of its assets is less than the amount that will be required to pay its probable liability under its existing debts as such debts become absolute and matured. There can be no assurance, however, that a court would determine that any particular subsidiary guarantor received fair consideration or reasonably equivalent value for issuing its subsidiary guarantee.

The following is a description of the material terms and provisions of Discovery’s common stock. It may not contain all the information that is important to you. You can access complete information by referring to Discovery’s restated charter and bylaws.

Under Discovery’s restated charter, it has authority to issue 3,800,000,000 shares designated as common stock, par value $0.01 per share. Discovery’s common stock is divided into three series. Discovery has authorized 1,700,000,000 shares of Series A common stock, 100,000,000 shares of Series B common stock, and 2,000,000,000 shares of Series C common stock. As of June 13, 2012, 146,064,502 shares of Series A common stock, 6,570,067 shares of Series B common stock and 98,760,433 shares of Series C common stock were issued and outstanding.

The holders of Series A common stock, Series B common stock and Series C common stock have equal rights, powers and privileges, except as otherwise described below.

The holders of Series A common stock are entitled to one vote for each share held, and the holders of Series B common stock are entitled to ten votes for each share held, on all matters voted on by stockholders, including elections of directors (other than the directors to be elected by the holders of Series A convertible preferred stock, as provided in “Description of Preferred Stock— Series A Convertible Preferred Stock and Series C Convertible Preferred Stock — Series A Preferred Stock Directors” below). The holders of Series C common stock are not entitled to any voting powers, except as required by Delaware law. If the vote or consent of holders of Series C common stock is required for a matter by Delaware law, the holders of Series C common stock will be entitled to 1/100th of a vote for each share held. Subject to any preferential rights of holders of Series A convertible preferred stock and any other outstanding series of Discovery’s preferred stock created by Discovery’s board from time to time, the holders of outstanding shares of Series A common stock, Series B common stock, Series A convertible preferred stock, and each series of any other preferred stock entitled to vote thereon, if any, will vote as one class with respect to all matters to be voted on by stockholders of Discovery (excluding, with respect to the holders of Series A convertible preferred stock, the election of the directors to be elected by the holders of common stock). In addition, the consent of holders of 75% of the then-outstanding shares of Series B common stock, voting together as a separate class, is required for any issuance of shares of Series B common stock by Discovery (except in limited circumstances).

Subject to any preferential rights of any outstanding series of Discovery’s preferred stock created by Discovery’s board from time to time, the holders of Discovery’s common stock are entitled to such dividends as may be declared from time to time by Discovery’s board from funds available therefor. Except as otherwise described under “— Distributions,” whenever a dividend is paid to the holders of one of series of common stock, Discovery will also pay to the holders of the other series of common stock an equal per share dividend.

Each share of Series B common stock is convertible, at the option of the holder, into one share of Series A common stock. Series A common stock and Series C common stock are not convertible.

Distributions made in shares of Series A common stock, Series B common stock, Series C common stock or any other security with respect to Series A common stock, Series B common stock or Series C common stock may be declared and paid only as follows:

Discovery may not reclassify, subdivide or combine any series of its common stock without reclassifying, subdividing or combining the other series of its common stock, on an equal per share basis.

The foregoing distribution provisions were structured to ensure that all holders of Discovery common stock are treated equally in a distribution, while protecting the relative voting rights associated with each of the Series A and Series B shares of Discovery common stock. The distribution provisions permit holders of each series to receive a distribution of shares of the same series because such a distribution would not affect any series’ relative voting rights. The distribution provisions also permit Series C shares to be distributed to all holders of Discovery common stock because the relative voting power of the holders of Discovery Series A and Series B common stock would not be diluted by a distribution of non-voting stock. However, the distribution provisions do not permit either Series A shares or Series B shares to be distributed to all holders of Discovery common stock because the voting power of the holders of the higher voting series of stock would be diluted by the distribution of their series of voting stock to lower voting or non-voting series of stock. Lastly, the distribution provisions relating to other Discovery securities or non- Discovery stock replicate, to the extent practicable, the protections afforded to the various series of Discovery common stock described above.

Discovery’s preferred stock holders may be entitled including the liquidation preference granted to holders of Series A convertible preferred stock and Series C convertible preferred stock as described in the section “Description of Preferred Stock— Series A Convertible Preferred Stock and Series C Convertible Preferred Stock — Liquidation Preference” below, the holders of Series A common stock, Series B common stock, Series C common stock and Series A convertible preferred stock and Series C convertible preferred stock will share equally, on a share for share basis (and in case of holders of Series A convertible preferred stock and Series C convertible preferred stock, on an as converted into common stock basis), in Discovery’s assets remaining for distribution to the holders of Discovery’s common stock.

Discovery’s restated charter and bylaws provide that, subject to any rights of the holders of any series of Discovery’s preferred stock to elect additional directors and rights of holders of Series A convertible preferred stock to elect Series A preferred stock directors, the number of Discovery’s directors will not be less than three or greater than fifteen directors. The members of Discovery’s board (other than those who may be elected by holders of Discovery’s preferred stock or Series A preferred stock directors), which we refer to as common stock directors, are divided into three classes. Each class of common stock directors consists, as nearly as possible, of a number of directors equal to one-third of the then authorized number of common stock directors. The term of office of Discovery’s Class I directors expires at the annual meeting of Discovery stockholders in 2015. The term of office of Discovery’s Class II directors expires at the annual meeting of Discovery stockholders in 2013. The term of office of Discovery’s Class III directors expires at the annual meeting of Discovery stockholders in 2014. At each annual meeting of Discovery stockholders, the successors of that class of common stock directors whose term expires at that meeting will be elected to hold office for a term expiring at the annual meeting of Discovery stockholders held in the third year following the year of their election. The directors of each class will hold office until their respective successors are elected and qualified or until such director’s earlier death, resignation or removal.

Discovery’s restated charter provides that, subject to the rights of the holders of any series of Discovery’s preferred stock, Discovery’s common stock directors may be removed from office only for cause (as defined in Discovery’s restated charter) upon the affirmative vote of the holders of at least a majority of the aggregate voting power of Discovery’s outstanding capital stock entitled to vote at an election of directors, voting together as a single class.

Discovery’s restated charter provides that, subject to the rights of the holders of any series of Discovery’s preferred stock, vacancies in the offices of common stock directors resulting from death, resignation, removal, disqualification or other cause, and newly created directorships resulting from any increase in the number of directors on Discovery’s board, will be filled only by the affirmative vote of a majority of the remaining common stock directors then in office (even though less than a quorum) or by the sole remaining common stock director. Any director so elected will hold office for the remainder of the full term of the class of directors in which the vacancy occurred or to which the new directorship is assigned, and until that director’s successor will have been elected and qualified or until such director’s earlier death, resignation or removal. No decrease in the number of directors constituting Discovery’s board will shorten the term of any incumbent director, except as may be provided in the restated charter of Discovery or in any certificate of designation with respect to a series of Discovery’s preferred stock with respect to any additional director elected by the holders of that series of Discovery’s preferred stock.

These provisions would preclude a third party from removing incumbent directors and simultaneously gaining control of Discovery’s board by filling the vacancies created by removal with its own nominees. Under the classified board provisions described above, it would take at least two elections of directors (and in certain circumstances three elections) for any individual or group to gain control of Discovery’s board. Accordingly, these provisions could discourage a third party from initiating a proxy contest, making a tender offer or otherwise attempting to gain control of Discovery.

Discovery’s restated charter provides that, (except (i) as otherwise provided in the terms of any series of preferred stock or (ii) with respect to an action taken by the holders of Series B common stock when voting together as a separate class), any action required to be taken or which may be taken at any annual meeting or special meeting of stockholders may not be taken without a meeting and may not be effected by any consent in writing by such holders. Holders of Series A convertible preferred stock voting as a separate class on any Special Class Vote Matter (as defined below under “Description of Preferred Stock — Series A Convertible Preferred Stock and Series C Convertible Preferred Stock — Special Class Vote Matters”) or on the election or removal of Series A preferred stock directors are permitted to act by written consent. Except as otherwise required by law and subject to the rights of the holders of any series of Discovery’s preferred stock, special meetings of Discovery stockholders for any purpose or purposes may be called only by Discovery’s Secretary at the request of at least 75% the directors of Discovery’s board then in office. No business other than that stated in the notice of special meeting will be transacted at any special meeting.

Discovery’s bylaws establish an advance notice procedure for stockholders to make nominations of candidates for election as directors or to bring other business before an annual meeting of Discovery stockholders.

All nominations by stockholders or other business to be properly brought before a meeting of stockholders will be made pursuant to timely notice in proper written form to Discovery’s Secretary. To be timely, a stockholder’s notice must be given to Discovery’s Secretary at Discovery’s offices as follows:

(1) with respect to an annual meeting of Discovery stockholders that is called for a date not more than 30 days before or 60 days after the anniversary date of the immediately preceding annual meeting of Discovery stockholders, such notice will be given no earlier than the close of business on the 90th day prior to such anniversary and no later than the close of business on the 60th day prior to such anniversary;

(2) with respect to an annual meeting of Discovery stockholders that is called for a date which is more than 30 days before or 60 days after the anniversary date of the immediately preceding annual meeting of Discovery stockholders, such notice will be given no earlier than the close of business on the 100th day prior to the current annual meeting and not later than the close of business on the later of (A) the 70th day prior to the current annual meeting or (b) the 10th day following the day on which Discovery first publicly announces the date of the current annual meeting; and

(3) with respect to an election to be held at a special meeting of Discovery stockholders, not earlier than the close of business on the 90th day prior to such special meeting and not later than the close of business on the later of the 60th day prior to such special meeting or the 10th day following the day on which public announcement is first made of the date of the special meeting.

The public announcement of an adjournment or postponement of a meeting of Discovery stockholders does not commence a new time period (or extend any time period) for the giving of any such stockholder notice. However, if the number of directors to be elected to Discovery’s board at any meeting is increased, and Discovery does not make a public announcement naming all of the nominees for director or specifying the size of the increased board at least 100 days prior to the anniversary date of the immediately preceding annual meeting, a stockholder’s notice will also be considered timely, but only with respect to nominees for any new positions created by such increase, if it will be delivered to Discovery’s Secretary at Discovery’s offices not later than the close of business on the 10th day following the day on which Discovery first made the relevant public announcement.

Discovery’s restated charter provides that, subject to the rights of the holders of any series of Discovery’s preferred stock and rights of holders of Series A convertible preferred stock with respect to the Special Class Vote Matters, the affirmative vote of the holders of at least 80% of the aggregate voting power of Discovery’s outstanding capital stock generally entitled to vote upon all matters submitted to Discovery stockholders, voting together as a single class, is required to adopt, amend or repeal any provision of Discovery’s restated charter or the addition or insertion of other provisions in the certificate, provided that the foregoing voting requirement will not apply to any adoption, amendment, repeal, addition or insertion (1) as to which Delaware law does not require the consent of Discovery stockholders or (2) which has been approved by at least 75% of the members of Discovery’s board then in office. Subject to the rights of holders of Series A convertible preferred stock to approve the amendments of any material bylaw provisions, Discovery’s restated charter further provides that the affirmative vote of the holders of at least 80% of the aggregate voting power of Discovery’s outstanding capital stock generally entitled to vote upon all matters submitted to Discovery stockholders, voting together as a single class, is required to adopt, amend or repeal any provision of Discovery’s bylaws, provided that the foregoing voting requirement will not apply to any adoption, amendment or repeal approved by the affirmative vote of not less than 75% of the members of Discovery’s board then in office.

In addition to the Special Class Vote Matters and supermajority voting provisions discussed under “— Amendments” above, Discovery’s restated charter provides that, subject to the rights of the holders of any series of Discovery’s preferred stock, the affirmative vote of the holders of at least 80% of the aggregate voting power of Discovery’s outstanding capital stock generally entitled to vote upon all matters submitted to Discovery stockholders, voting together as a single class, is required for:

On September 17, 2008, the Discovery board of directors declared a dividend of preferred share purchase rights to holders of record of Discovery’s common stock and holders of record of Discovery’s convertible preferred stock as of immediately after the effectiveness of the merger (the “Record Date”). The dividend consisted of one Series A Right for each share of Series A common stock outstanding or Series A convertible preferred stock outstanding on the Record Date, one Series B Right for each share of Series B common stock outstanding on the Record Date and one Series C Right for each share of Series C common stock outstanding or Series C convertible preferred stock outstanding on the Record Date. Each Series A Right represents the right to purchase 1/1000th of a share of Discovery’s Series A Junior Participating Preferred Stock, par value $.01 per share (the “Series A Junior Preferred Stock”), each Series B Right represents the right to purchase 1/1000th of a share of Discovery’s Series B Junior Participating Preferred Stock, par value $.01 per share (the “Series B Junior Preferred Stock”) and each Series C Right (collectively with the Series A Rights and the Series B Rights, the “Rights”) represents the right to purchase 1/1000th of a share of Discovery’s Series C Junior Participating Preferred Stock, par value $.01 per share (the “Series C Junior Preferred Stock” and, collectively with the Series A Junior Preferred Stock and the Series B Junior Preferred Stock, the “Junior Preferred Stock”).

The description and terms of the Rights are set forth in a Rights Agreement, dated as of September 17, 2008 and amended as of December 10, 2008, as the same may be further amended from time to time (the “Rights Agreement”), between Discovery and Computershare Trust Company, N.A., as Rights Agent (the “Rights Agent”).

Until the earlier to occur of (i) 10 days following a public announcement that a person or group of affiliated or associated persons has become an “Acquiring Person” (as described below) or (ii) 10 business days (or such later date as may be determined by action of the board of directors of Discovery prior to such time as any person or group of affiliated or associated persons becomes an Acquiring Person) following the commencement of, or announcement of an intention to make, a tender offer or exchange offer the consummation of which would result in a person or group of affiliated or associated persons becoming an Acquiring Person (the earlier of such dates being called the “Distribution Date”), the Rights will be evidenced, with respect to any of the common stock certificates or Convertible Preferred Stock certificates outstanding as of the Record Date, by such common stock certificate or Convertible Preferred Stock certificate together with the Summary of Rights included in Amendment No. 1 to the Rights Agreement between Discovery and Computershare Trust Company, N.A. dated December 10, 2008 and incorporated by reference herein, or in the case of uncertificated shares, the balances indicated in the book-entry account system of the transfer agent for the common stock or the Convertible Preferred Stock. Except in certain situations, a person or group of affiliated or associated persons becomes an “Acquiring Person” upon acquiring beneficial ownership of 10% or more of the outstanding shares of common stock. Notwithstanding the foregoing, generally, where a person or group of affiliated or associated persons has a Schedule 13G on file with the SEC pursuant to the requirements of Rule 13d-1 under the Exchange Act, and only for so long as such person or group of affiliated or associated persons continues to report on Schedule 13G, does not acquire beneficial ownership of shares of Series A common stock representing 10% or more of the outstanding shares of common stock (for purposes of calculating the shares of Series A common stock beneficially owned by a person, treating any shares of Series B common stock beneficially owned as having been converted into shares of Series A common stock) and does not acquire beneficial ownership of 5% or more of the outstanding shares of Series B common stock, such person or group of affiliated or associated persons becomes an Acquiring Person upon acquiring beneficial ownership of 20% or more of the outstanding shares of common stock.

The Rights Agreement provides that, until the Distribution Date (or earlier expiration of the Rights), the Rights will be transferred with and only with the common stock or the Convertible Preferred Stock. Until the Distribution Date (or earlier expiration of the Rights), new common stock certificates or Convertible Preferred Stock certificates issued after the Record Date upon transfer or new issuances of common stock or Convertible Preferred Stock will contain a notation incorporating the Rights Agreement by reference. Until the Distribution Date (or earlier expiration of the Rights), the transfer of any shares of common stock or Convertible Preferred Stock outstanding as of the Record Date, even without such notation or a copy of this Summary of Rights, will also constitute the transfer of the Rights associated with such shares of common stock or Convertible Preferred Stock. As soon as practicable following the Distribution Date, separate certificates evidencing the Series A Rights (“Series A Rights Certificates”), the Series B Rights (“Series B Rights Certificates”) and the Series C Rights (“Series C Rights Certificates” and, collectively with the Series A Right Certificates and the Series B Right certificates, the “Rights Certificates”) will be mailed to holders of record of the Series A common stock, the Series B common stock, the Series C common stock, the Series A Convertible Preferred Stock and the Series C Convertible Preferred Stock, respectively (other than any Acquiring Person or any Associate or Affiliate of an Acquiring Person), as of the close of business on the Distribution Date, and thereafter such separate Rights Certificates alone will evidence the Rights.

The Rights are not exercisable until the Distribution Date. The Rights will expire on September 17, 2018 (the “Final Expiration Date”), unless the Final Expiration Date is advanced or extended or unless the Rights are earlier redeemed or exchanged by Discovery, in each case as described below.

The Purchase Price payable to exercise the Rights, and the number of shares of Junior Preferred Stock or other securities or property issuable upon any such exercise are subject to adjustment from time to time to

prevent dilution (i) in the event of a stock dividend on, or a subdivision, combination or reclassification of, the Junior Preferred Stock, (ii) upon the grant to holders of the Junior Preferred Stock of certain rights, options or warrants to subscribe for or purchase Junior Preferred Stock at a price, or securities convertible into Junior Preferred Stock with a conversion price, less than the then-current market price of the Junior Preferred Stock or (iii) upon the distribution to holders of the Junior Preferred Stock of evidences of indebtedness or assets (excluding regular periodic cash dividends or dividends payable in Junior Preferred Stock) or of subscription rights or warrants (other than those referred to above).

The number of outstanding Rights associated with each share of common stock is subject to adjustment in the event of a stock dividend on the common stock payable in shares of common stock or subdivisions, consolidations or combinations of the common stock occurring, in any such case, prior to the Distribution Date. The number of outstanding Rights associated with each share of Convertible Preferred Stock is subject to adjustment in the event of a stock dividend on the Convertible Preferred Stock payable in shares of Convertible Preferred Stock or subdivisions, consolidations or combinations of the Convertible Preferred Stock occurring, in any such case, prior to the Distribution Date.

Shares of Junior Preferred Stock purchasable upon exercise of the Rights will not be redeemable. Each share of Junior Preferred Stock will be entitled, when, as and if declared, to a minimum preferential quarterly dividend payment of the greater of (a) $10.00 per share of Junior Preferred Stock, and (b) an amount per share of Junior Preferred Stock equal to 1,000 times the dividend declared per share of the applicable series of common stock. In the event of liquidation, dissolution or winding up of Discovery, the holders of the Junior Preferred Stock will be entitled to a minimum preferential payment of the greater of (a) $10.00 per share (plus any accrued but unpaid dividends), and (b) an amount equal to 1,000 times the payment made per share of the applicable series of common stock. Each share of Junior Preferred Stock will have 1,000 times the number of votes each share of the applicable series of common stock has on matters such series is entitled to vote on, which shall be voted together with the applicable series of common stock (and, accordingly, the Series C Junior Preferred Stock, like the Series C common stock, will not ordinarily have any voting power). Finally, in the event of any merger, consolidation or other transaction in which outstanding shares of common stock are converted or exchanged, each share of Junior Preferred Stock will be entitled to receive 1,000 times the amount received per share of the applicable series of common stock. These rights are protected by customary antidilution provisions.

Because of the nature of the Junior Preferred Stock’s dividend, liquidation and voting rights, the value of the 1/1000th interest in a share of Junior Preferred Stock purchasable upon exercise of each Series A Right, Series B Right and Series C Right should approximate the value of one share of Series A common stock, Series B common stock and Series C common stock, respectively.

In the event that any person or group of affiliated or associated persons becomes an Acquiring Person, each holder of a Right, other than Rights beneficially owned by the Acquiring Person (which will thereupon become void), will thereafter have the right to receive upon exercise of a Right that number of shares of Series A common stock (in the case of a Series A Right), Series B common stock (in the case of a Series B Right) or Series C common stock (in the case of a Series C Right), having a market value equal to two times the exercise price of the Right.

In the event that, after a person or group has become an Acquiring Person, Discovery is acquired in a merger or other business combination transaction, or 50% or more of its consolidated assets or earning power are sold, proper provisions will be made so that each holder of a Right (other than Rights beneficially owned by an Acquiring Person, which will have become void) will thereafter have the right to receive upon the exercise of a Right that number of shares of common stock of the person with whom Discovery has engaged in such transaction (or its parent) that at the time of such transaction have a market value equal to two times the exercise price of the Right.

At any time after any person or group becomes an Acquiring Person and prior to the earlier of one of the events described in the previous paragraph or the acquisition by such Acquiring Person of shares of common

stock representing 50% or more of the total number of votes entitled to be cast generally by the holders of the common stock then outstanding, the board of directors of Discovery may exchange the Rights (other than Rights owned by such Acquiring Person, which will have become void), in whole or in part, for shares of common stock or Junior Preferred Stock (or a series of Discovery’s preferred stock having equivalent rights, preferences and privileges), at an exchange ratio of one share of common stock, or a fractional share of Junior Preferred Stock (or other preferred stock) equivalent in value thereto, per Right.

With certain exceptions, no adjustment in the Purchase Price will be required until cumulative adjustments require an adjustment of at least 1% in such Purchase Price. No fractional shares of Junior Preferred Stock or common stock will be issued (other than fractions of Junior Preferred Stock which are integral multiples of 1/1000th of a share of Junior Preferred Stock, which may, at the election of Discovery, be evidenced by depositary receipts), and in lieu thereof an adjustment in cash will be made based on the current market price of the Junior Preferred Stock or the common stock.

At any time prior to the time an Acquiring Person becomes such, the board of directors of Discovery may redeem the Rights in whole, but not in part, at a price of $.01 per Right (the “Redemption Price”) payable, at the option of Discovery, in cash, shares of common stock or such other form of consideration as the board of directors of Discovery shall determine. The redemption of the Rights may be made effective at such time, on such basis and with such conditions as the board of directors of Discovery in its sole discretion may establish. Immediately upon any redemption of the Rights, the right to exercise the Rights will terminate and the only right of the holders of Rights will be to receive the Redemption Price.

For so long as the Rights remain redeemable, Discovery may, except with respect to the Redemption Price, amend the Rights Agreement in any manner. After the Rights are no longer redeemable, Discovery may, except with respect to the Redemption Price, amend the Rights Agreement in any manner that does not adversely affect the interests of holders of the Rights.

Until a Right is exercised or exchanged, the holder thereof, as such, will have no rights as a stockholder of Discovery, including, without limitation, the right to vote or to receive dividends.

At the closing of the Discovery Formation, Discovery and Advance/Newhouse entered into a registration rights agreement.

Pursuant to the registration rights agreement, subject to certain limitations and restrictions, Advance/Newhouse has the right to require Discovery to use its reasonable efforts to register the shares of Discovery common stock issuable upon conversion of the convertible preferred stock issued in the Discovery Formation. Advance/Newhouse has the right to demand up to three such registrations, subject to certain conditions. Discovery will be responsible for customary registration expenses incurred in connection with any such registration. Subject to certain limitations and restrictions, Advance/Newhouse has the right to assign any or all of its registration rights to any member of its stockholder group and to third parties. Any such transferee is required to agree to be bound by the registration rights agreement and such transfer is to be effected in accordance with applicable securities laws. Advance/Newhouse may effect an underwritten public offering with respect to shares included in a shelf registration statement so long as the gross proceeds to the selling holders are expected to exceed $100,000,000. Advance/Newhouse will be permitted to select one co-lead bookrunning managing underwriter for such public offering reasonably acceptable to Discovery and Discovery will select the remaining co-lead bookrunning managers.

Advance/Newhouse also has piggy-back registration rights to participate in any primary or secondary offering of shares of Discovery common stock by Discovery, whether for its own account or for the account of any other stockholders.

The registration rights agreement also contains customary provisions relating to blackout periods and indemnification

The transfer agent for Discovery’s common stock is Computershare Trust Company, N.A.

The following summary contains a description of the general terms and provisions of the preferred stock that Discovery may issue. Other terms of any series of preferred stock will be described in the prospectus supplement relating to that series of preferred stock. The terms of any series of preferred stock may differ from the terms described below. Certain provisions of the preferred stock described below and in any applicable prospectus supplement are not complete. You should refer to Discovery’s restated charter and bylaws and the certificate of designation in connection with the offering of a particular series of preferred stock.

Under Discovery’s restated charter, Discovery has authority to issue 200,000,000 shares of preferred stock, par value $0.01 per share. Discovery currently has two designated series of preferred stock. Discovery has authorized 75,000,000 shares of Series A convertible preferred stock and 75,000,000 shares of Series C convertible preferred stock. The remaining 50,000,000 authorized shares of preferred stock are undesignated as to series and are issuable in accordance with the provisions of the restated charter. As of June 13, 2012, 71,107,312 shares of Series A convertible preferred stock and 57,374,821 shares of Series C convertible preferred stock were issued and outstanding. We are not registering the resale of the outstanding Series A convertible preferred stock or the outstanding Series C convertible preferred, nor are we registering the issuance of additional shares of Series A convertible preferred stock or Series C convertible preferred stock pursuant to this prospectus.

Pursuant to Discovery’s restated charter, Discovery is authorized to issue “blank check” preferred stock, which may be issued in one or more series upon authorization of its board of directors. Discovery’s board of directors is authorized to fix the designation of the series, the number of authorized shares of the series, dividend rights and terms, conversion rights, voting rights, redemption rights and terms, liquidation preferences, and any other rights, powers, preferences and limitations applicable to each series of the preferred stock. The authorized shares of Discovery’s preferred stock are available for issuance without further action by Discovery’s stockholders, unless such action is subject to the approval of the holders of Series A convertible preferred stock or required by applicable law or the rules of any stock exchange or automated quotation system on which Discovery’s securities may be listed or traded. If the approval of Discovery’s stockholders is not required for the issuance of shares of Discovery’s preferred stock, Discovery’s board may determine not to seek stockholder approval.

A series of Discovery’s preferred stock could, depending on the terms of such series, impede the completion of a merger, tender offer or other takeover attempt. Discovery’s board of directors will make any determination to issue such shares based upon its judgment as to the best interests of Discovery’s stockholders. Discovery’s board of directors, in so acting, could issue Discovery’s preferred stock having terms that could discourage an acquisition attempt through which an acquirer may be able to change the composition of Discovery’s board of directors, including a tender offer or other transaction that some, or a majority, of Discovery stockholders might believe to be in their best interests or in which stockholders might receive a premium for their stock over the then-current market price of the stock.

The preferred stock has the terms described below unless otherwise provided in the prospectus supplement relating to a particular series of the preferred stock. You should read the prospectus supplement relating to the particular series of the preferred stock being offered for specific terms, including:

The preferred stock will, when issued, be fully paid and nonassessable. Unless otherwise specified in the prospectus supplement, each series of the preferred stock will rank equally as to dividends and liquidation rights in all respects with each other series of preferred stock. The rights of holders of shares of each series of preferred stock will be subordinate to those of Discovery’s general creditors.

As described under “Description of Depositary Shares,” Discovery may, at its option, with respect to any series of preferred stock, elect to offer fractional interests in shares of preferred stock, and provide for the issuance of depositary receipts representing depositary shares, each of which will represent a fractional interest in a share of the series of the preferred stock. The fractional interest will be specified in the prospectus supplement relating to a particular series of the preferred stock.

Unless otherwise specified in the prospectus supplement, the preferred stock will, with respect to dividend rights and rights upon Discovery’s liquidation, dissolution or winding up of its affairs, rank:

Holders of the preferred stock of each series will be entitled to receive, when, as and if declared by Discovery’s board of directors, cash dividends at such rates and on such dates described in the prospectus supplement. Different series of preferred stock may be entitled to dividends at different rates or based on different methods of calculation. The dividend rate may be fixed or variable or both. Dividends will be payable to the holders of record as they appear on Discovery’s stock books on record dates fixed by Discovery’s board of directors, as specified in the applicable prospectus supplement.

Dividends on any series of the preferred stock may be cumulative or noncumulative, as described in the applicable prospectus supplement. If Discovery’s board of directors does not declare a dividend payable on a dividend payment date on any series of noncumulative preferred stock, then the holders of that noncumulative

preferred stock will have no right to receive a dividend for that dividend payment date, and Discovery will have no obligation to pay the dividend accrued for that period, whether or not dividends on that series are declared payable on any future dividend payment dates. Dividends on any series of cumulative preferred stock will accrue from the date Discovery initially issues shares of such series or such other date specified in the applicable prospectus supplement.

No full dividends may be declared or paid or funds set apart for the payment of any dividends on any parity securities unless dividends have been paid or set apart for payment on the preferred stock. If full dividends are not paid, the preferred stock will share dividends pro rata with the parity securities.

No dividends may be declared or paid or funds set apart for the payment of dividends on any junior securities unless full cumulative dividends for all dividend periods terminating on or prior to the date of the declaration or payment will have been paid or declared and a sum sufficient for the payment set apart for payment on the preferred stock.

Upon any voluntary or involuntary liquidation, dissolution or winding up of Discovery’s affairs, then, before it makes any distribution or payment to the holders of any common stock or any other class or series of its capital stock ranking junior to the preferred stock in the distribution of assets upon any liquidation, dissolution or winding up of its affairs, the holders of each series of preferred stock shall be entitled to receive out of assets legally available for distribution to stockholders, liquidating distributions in the amount of the liquidation preference per share set forth in the applicable prospectus supplement, plus any accrued and unpaid dividends thereon. Such dividends will not include any accumulation in respect of unpaid noncumulative dividends for prior dividend periods. Unless otherwise specified in the prospectus supplement, after payment of the full amount of their liquidating distributions, the holders of preferred stock will have no right or claim to any of Discovery’s remaining assets. Upon any such voluntary or involuntary liquidation, dissolution or winding up, if Discovery’s available assets are insufficient to pay the amount of the liquidating distributions on all outstanding preferred stock and the corresponding amounts payable on all other classes or series of its capital stock ranking on parity with the preferred stock and all other such classes or series of shares of capital stock ranking on parity with the preferred stock in the distribution of assets, then the holders of the preferred stock and all other such classes or series of capital stock will share ratably in any such distribution of assets in proportion to the full liquidating distributions to which they would otherwise be entitled.

Upon liquidation, dissolution or winding up and if Discovery has made liquidating distributions in full to all holders of preferred stock, it will distribute its remaining assets among the holders of any other classes or series of capital stock ranking junior to the preferred stock according to their respective rights and preferences and, in each case, according to their respective number of shares. For such purposes, Discovery’s consolidation or merger with or into any other corporation, trust or entity, or the sale, lease or conveyance of all or substantially all of its property or business will not be deemed to constitute a liquidation, dissolution or winding up of its affairs.

If so provided in the applicable prospectus supplement, the preferred stock will be subject to mandatory redemption or redemption at Discovery’s option, as a whole or in part, in each case upon the terms, at the times and at the redemption prices set forth in such prospectus supplement.

The prospectus supplement relating to a series of preferred stock that is subject to mandatory redemption will specify the number of shares of preferred stock that shall be redeemed by Discovery in each year commencing after a date to be specified, at a redemption price per share to be specified, together with an amount equal to all accrued and unpaid dividends thereon to the date of redemption. Unless the shares have a cumulative

dividend, such accrued dividends will not include any accumulation in respect of unpaid dividends for prior dividend periods. Discovery may pay the redemption price in cash or other property, as specified in the applicable prospectus supplement. If the redemption price for preferred stock of any series is payable only from the net proceeds of the issuance of shares of Discovery’s capital stock, the terms of such preferred stock may provide that, if no such shares of its capital stock shall have been issued or to the extent the net proceeds from any issuance are insufficient to pay in full the aggregate redemption price then due, such preferred stock shall automatically and mandatorily be converted into the applicable shares of Discovery’s capital stock pursuant to conversion provisions specified in the applicable prospectus supplement.

Notwithstanding the foregoing, Discovery will not redeem any preferred stock of a series unless:

However, at any time Discovery may purchase or acquire preferred stock of that series (1) pursuant to a purchase or exchange offer made on the same terms to holders of all outstanding preferred stock of such series or (2) by conversion into or exchange for shares of Discovery’s capital stock ranking junior to the preferred stock of such series as to dividends and upon liquidation.

If fewer than all of the outstanding shares of preferred stock of any series are to be redeemed, Discovery will determine the number of shares that may be redeemed pro rata from the holders of record of such shares in proportion to the number of such shares held or for which redemption is requested by such holder or by any other equitable manner that Discovery determines. Such determination will reflect adjustments to avoid redemption of fractional shares.

Unless otherwise specified in the prospectus supplement, Discovery will mail notice of redemption at least 30 days but not more than 60 days before the redemption date to each holder of record of preferred stock to be redeemed at the address shown on its stock transfer books. Each notice shall state:

If notice of redemption has been given and Discovery has set aside the funds necessary for such redemption in trust for the benefit of the holders of any shares so called for redemption, then from and after the redemption date, dividends will cease to accrue on such shares, and all rights of the holders of such shares will terminate, except the right to receive the redemption price.

Holders of preferred stock will not have any voting rights, except as required by law or as indicated in the applicable prospectus supplement.

Unless otherwise provided for any series of preferred stock, no consent or vote of the holders of shares of preferred stock or any series thereof shall be required for any amendment to the restated charter that would increase the number of authorized shares of preferred stock or the number of authorized shares of any series thereof or decrease the number of authorized shares of preferred stock or the number of authorized shares of any series thereof (but not below the number of authorized shares of preferred stock or such series, as the case may be, then outstanding).

The terms and conditions, if any, upon which any series of preferred stock is convertible into Series A common stock or Series C common stock will be set forth in the applicable prospectus supplement relating thereto. Such terms will include the number of shares of Series A common stock or Series C common stock into which the shares of preferred stock are convertible, the conversion price, rate or manner of calculation thereof, the conversion period, provisions as to whether conversion will be at Discovery’s option or at the option of the holders of the preferred stock, the events requiring an adjustment of the conversion price and provisions affecting conversion in the event of the redemption.

The transfer agent and registrar for the preferred stock will be set forth in the applicable prospectus supplement.

Series A Convertible Preferred Stock and Series C Convertible Preferred Stock

The holders of Discovery’s Series A convertible preferred stock and Series C convertible preferred stock have the rights, powers and privileges described below.

In connection with any matter as to which the holders of Series A common stock and Series B common stock are entitled to vote other than the election of common stock directors, holders of Series A convertible preferred stock and, if holders of Series C common stock are entitled to vote pursuant to Delaware law, the holders of Series C convertible preferred stock, have the right to vote with holders of common stock on an as converted to common stock basis, voting together as a single class on all matters to be voted on by stockholders of Discovery (excluding the election of common stock directors).

So long as Advance/Newhouse or any of the direct or indirect subsidiaries of Advance Publications, Inc. or Newhouse Broadcasting Corporation (collectively referred to as the “ ANPP Stockholder Group”) or any ANPP Permitted Transferee (as defined below) owns or has the right to vote such number of shares of Series A convertible preferred stock constituting at least 80% of the number of shares equal to the sum of (x) the number

of shares of Series A convertible preferred stock issued to the ANPP Stockholder Group in the Transaction plus (y) the number of shares of Series A convertible preferred stock released to the ANPP Stockholder Group from escrow (such number of shares, the “Base Amount”), Discovery’s restated charter requires the consent of the holders of a majority of such shares of Series A convertible preferred stock (“Majority Holders”) before Discovery or any of its subsidiaries can take any of the actions described below (any such action, a “Special Class Vote Matter”).

The term “ANPP Permitted Transferee” means a person (who is not a member of the ANPP Stockholder Group) that acquires record and beneficial ownership of all outstanding shares of Series A convertible preferred stock from one or more members of the ANPP Stockholder Group or another ANPP Permitted Transferee, provided that the shares of Series A convertible preferred stock, Series C convertible preferred stock and Discovery common stock beneficially owned by such transferee and its affiliates immediately following such transfer do not exceed the Maximum Amount.

The term “Maximum Amount” means a number of shares of Discovery common stock equal to (x) 7.5% of the sum of (A) the number of shares of Discovery common stock (including shares issuable on conversion of Series A convertible preferred stock or Series C convertible preferred stock (other than escrow shares)) outstanding immediately following the effective time of the merger, (B) the number of shares of Discovery common stock issuable upon conversion of Series A convertible preferred stock and Series C convertible preferred stock released to the ANPP Stockholder Group from escrow, and (C) the number of shares of Discovery common stock issuable upon exercise of options of Discovery, which options were converted in the merger from options to acquire shares of DHC common stock; plus (y) the number of shares of Discovery common stock issuable upon conversion of the shares of Series A convertible preferred stock and Series C convertible preferred stock issued to Advance/New house in the Transaction; plus (z) any shares of Series A convertible preferred stock and Series C convertible preferred stock released from escrow. The Maximum Amount is subject to adjustment upon certain transfers of shares of Series A convertible preferred stock or Series C convertible preferred stock (or shares of common stock issuable upon conversion thereof). The Maximum Amount will be deemed to have been exceeded if after the date shares of Series A convertible preferred stock and Series C convertible preferred stock were initially issued to Advance/New house, any member of the ANPP Stockholder Group or any ANPP Permitted Transferee acquires shares of common stock or transfers shares of Series A convertible preferred stock or Series C convertible preferred stock to any third party and such transaction results in an increase in the aggregate voting power held by the ANPP Stockholder Group, ANPP Permitted Transferee, or such transferee and their respective affiliates collectively following such transaction by greater than 1% of the aggregate voting power held by the ANPP Stockholder Group immediately after the effective time of the merger. For purposes of calculating such aggregate voting power, escrow shares will be excluded, any shares of Series A convertible preferred stock released from escrow will be included, and the number of shares of Discovery common stock issuable upon exercise of options of Discovery outstanding immediately after the merger, will be included.

The holders of the Series A convertible preferred stock have the right to elect three members of the board of directors and two such directors must qualify as independent directors as defined by the applicable rules and regulations of Nasdaq or the SEC. The shares of common stock are not entitled to vote in the election of such directors.

Any vacancy in the office of a preferred stock director will be filled solely by the holders of the Series A convertible preferred stock entitled to appoint such director. A preferred stock director may be removed without cause by the written consent of the holders of a majority of the then outstanding shares of the Series A convertible preferred stock and may be removed with cause (as defined in Discovery’s restated charter) upon the affirmative vote of the holders of a majority of the total voting power of the then outstanding shares of Discovery’s common stock and Series A convertible preferred stock and any other series of preferred stock entitled to vote upon the election of common stock directors voting together as a single class.

Subject to the prior preferences and other rights of any senior stock, whenever a cash dividend is paid to the holders of Discovery common stock, Discovery will also pay to the holders of the Series A convertible preferred stock and Series C convertible preferred stock an equal per share cash dividend on an as converted to common stock basis.

Each share of Series A convertible preferred stock is initially convertible, at the option of the holder, into one share of Series A common stock, subject to adjustments in such conversion rate to provide for dividends, distributions, rights or warrants granted to holders of Discovery’s common stock and any reclassification, consolidation, merger, sale or transfer or change in Discovery’s common stock. Each share of Series C convertible preferred stock is initially convertible, at the option of the holder, into one share of Series C common stock, subject to adjustments in such conversion rate to provide for dividends, distributions, rights or warrants granted to holders of Discovery’s common stock and any reclassification, consolidation, merger, sale or transfer or change in Discovery’s common stock.

Generally, each share of Series A and Series C convertible preferred stock will automatically convert into the applicable series of common stock if such share is transferred to a third party and such transfer is not a permitted transfer. In addition, all of the outstanding Series A and Series C convertible preferred stock will automatically convert into the applicable series of common stock at such time as the number of outstanding shares of Series A convertible preferred stock is less than 80% of the Base Amount.

In the event of Discovery’s liquidation, dissolution and winding up, after payment or provision for payment of Discovery’s debts and liabilities and subject to the prior payment with respect to any stock ranking senior to Series A convertible preferred stock or Series C convertible preferred stock, the holders of Series A convertible preferred stock and Series C convertible preferred stock will receive, before any payment or distribution is made to the holders of any common stock or other junior stock, an amount (in cash or property) equal to $.01 per share. Following payment of such amount and the payment in full of all amounts owing to the holders of securities ranking senior to Discovery’s common stock, holders of Series A convertible preferred stock and Series C convertible preferred stock will be entitled to share ratably, on an as-converted to common stock basis, with the holders of Discovery’s common stock, as to any amounts remaining for distribution to such holders.

Discovery may, at its option, elect to offer fractional shares of preferred stock, which we call depositary shares, rather than full shares of preferred stock. If we do, we will issue to the public receipts, called depositary receipts, for depositary shares, each of which will represent a fraction, to be described in the applicable prospectus supplement, of a share of a particular series of preferred stock. Unless otherwise provided in the prospectus supplement, each owner of a depositary share will be entitled, in proportion to the applicable fractional interest in a share of preferred stock represented by the depositary share, to all the rights and preferences of the preferred stock represented by the depositary share. Those rights include dividend, voting, redemption, conversion and liquidation rights.

The shares of preferred stock underlying the depositary shares will be deposited with a bank or trust company selected by Discovery to act as depositary, under a deposit agreement between Discovery, the depositary and the holders of the depositary receipts. The depositary will be the transfer agent, registrar and dividend disbursing agent for the depositary shares.

The depositary shares will be evidenced by depositary receipts issued pursuant to the depositary agreement. Holders of depositary receipts agree to be bound by the deposit agreement, which requires holders to take certain actions such as filing proof of residence and paying certain charges.

The summary of terms of the depositary shares contained in this prospectus is not complete. You should refer to the form of the deposit agreement, Discovery’s restated charter and the certificate of designation for the applicable series of preferred stock that are, or will be, filed with the SEC.

The depositary will distribute all cash dividends or other cash distributions, if any, received in respect of the preferred stock underlying the depositary shares to the record holders of depositary shares in proportion to the numbers of depositary shares owned by those holders on the relevant record date. The relevant record date for depositary shares will be the same date as the record date for the underlying preferred stock.

If there is a distribution other than in cash, the depositary will distribute property (including securities) received by it to the record holders of depositary shares, unless the depositary determines that it is not feasible to make the distribution. If this occurs, the depositary may, with Discovery’s approval, adopt another method for the distribution, including selling the property and distributing the net proceeds from the sale to the holders.

If a series of preferred stock underlying the depositary shares has a liquidation preference, in the event of the voluntary or involuntary liquidation, dissolution or winding up of Discovery, holders of depositary shares will be entitled to receive the fraction of the liquidation preference accorded each share of the applicable series of preferred stock, as set forth in the applicable prospectus supplement.

Unless the related depositary shares have been previously called for redemption, upon surrender of the depositary receipts at the office of the depositary, the holder of the depositary shares will be entitled to delivery, at the office of the depositary to or upon his or her order, of the number of whole shares of the preferred stock and any money or other property represented by the depositary shares. If the depositary receipts delivered by the holder evidence a number of depositary shares in excess of the number of depositary shares representing the

number of whole shares of preferred stock to be withdrawn, the depositary will deliver to the holder at the same time a new depositary receipt evidencing the excess number of depositary shares. In no event will the depositary deliver fractional shares of preferred stock upon surrender of depositary receipts. Holders of preferred stock thus withdrawn may not thereafter deposit those shares under the deposit agreement or receive depositary receipts evidencing depositary shares therefor.

Whenever Discovery redeems shares of preferred stock held by the depositary, the depositary will redeem as of the same redemption date the number of depositary shares representing shares of the preferred stock so redeemed, so long as Discovery has paid in full to the depositary the redemption price of the preferred stock to be redeemed plus an amount equal to any accumulated and unpaid dividends on the preferred stock to the date fixed for redemption. The redemption price per depositary share will be equal to the redemption price and any other amounts per share payable on the preferred stock multiplied by the fraction of a share of preferred stock represented by one depositary share. If less than all the depositary shares are to be redeemed, the depositary shares to be redeemed will be selected by lot or pro rata or by any other equitable method as may be determined by the depositary.

After the date fixed for redemption, depositary shares called for redemption will no longer be deemed to be outstanding and all rights of the holders of depositary shares will cease, except the right to receive the moneys payable upon redemption and any money or other property to which the holders of the depositary shares were entitled upon redemption upon surrender to the depositary of the depositary receipts evidencing the depositary shares.

Upon receipt of notice of any meeting at which the holders of the preferred stock are entitled to vote, the depositary will mail the information contained in the notice of meeting to the record holders of the depositary receipts relating to that preferred stock. The record date for the depositary receipts relating to the preferred stock will be the same date as the record date for the preferred stock. Each record holder of the depositary shares on the record date will be entitled to instruct the depositary as to the exercise of the voting rights pertaining to the number of shares of preferred stock represented by that holder’s depositary shares. The depositary will endeavor, insofar as practicable, to vote the number of shares of preferred stock represented by the depositary shares in accordance with those instructions, and Discovery will agree to take all action that may be deemed necessary by the depositary in order to enable the depositary to do so. The depositary will not vote any shares of preferred stock except to the extent it receives specific instructions from the holders of depositary shares representing that number of shares of preferred stock.

Discovery will pay all transfer and other taxes and governmental charges arising solely from the existence of the depositary arrangements. Discovery will pay charges of the depositary in connection with the initial deposit of the preferred stock and any redemption of the preferred stock. Holders of depositary receipts will pay transfer, income and other taxes and governmental charges and such other charges (including those in connection with the receipt and distribution of dividends, the sale or exercise of rights, the withdrawal of the preferred stock and the transferring, splitting or grouping of depositary receipts) as are expressly provided in the deposit agreement to be for their accounts. If these charges have not been paid by the holders of depositary receipts, the depositary may refuse to transfer depositary shares, withhold dividends and distributions and sell the depositary shares evidenced by the depositary receipt.

The form of depositary receipt evidencing the depositary shares and any provision of the deposit agreement may be amended by agreement between Discovery and the depositary. However, any amendment that materially

and adversely alters the rights of the holders of depositary shares, other than fee changes, will not be effective unless the amendment has been approved by the holders of at least a majority of the outstanding depositary shares. The deposit agreement may be terminated by the depositary or Discovery only if:

The depositary may resign at any time by delivering to Discovery notice of its election to do so, and Discovery may remove the depositary at any time. Any resignation or removal of the depositary will take effect upon Discovery’s appointment of a successor depositary and its acceptance of such appointment. The successor depositary must be appointed within 60 days after delivery of the notice of resignation or removal and must be a bank or trust company having its principal office in the United States and having the requisite combined capital and surplus as set forth in the applicable agreement.

The depositary will forward to holders of depositary receipts all notices, reports and other communications, including proxy solicitation materials received from Discovery, that are delivered to the depositary and that Discovery is required to furnish to the holders of the preferred stock. In addition, the depositary will make available for inspection by holders of depositary receipts at the principal office of the depositary, and at such other places as it may from time to time deem advisable, any reports and communications Discovery delivers to the depositary as the holder of preferred stock.

Neither Discovery nor the depositary will be liable if either of them is prevented or delayed by law or any circumstance beyond Discovery’s control in performing its obligations. Discovery’s obligations and those of the depositary will be limited to performance in good faith of its and their duties thereunder. Discovery and the depositary will not be obligated to prosecute or defend any legal proceeding in respect of any depositary shares or preferred stock unless satisfactory indemnity is furnished. Discovery and the depositary may rely upon written advice of counsel or accountants, on information provided by persons presenting preferred stock for deposit, holders of depositary receipts or other persons believed to be competent to give such information and on documents believed to be genuine and to have been signed or presented by the proper party or parties.

Discovery may issue stock purchase contracts, including contracts obligating holders to purchase from or sell to Discovery, and obligating Discovery to sell to or purchase from the holders, a specified number of shares of Discovery’s common stock, preferred stock or depositary shares at a future date or dates, which we refer to in this prospectus as stock purchase contracts. The price per share of common stock, preferred stock or depositary shares and the number of shares of each may be fixed at the time the stock purchase contracts are issued or may be determined by reference to a specific formula set forth in the stock purchase contracts. The stock purchase contracts may be issued separately or as part of units, often known as stock purchase units, consisting of one or more stock purchase contracts and beneficial interests in

securing the holders’ obligations to purchase the common stock, preferred stock or depositary shares under the stock purchase contracts. The stock purchase contracts may require Discovery to make periodic payments to the holders of the stock purchase units or vice versa, and these payments may be unsecured or prefunded on some basis. The stock purchase contracts may require holders to secure their obligations under those contracts in a specified manner, including without limitation by pledging their interest in another stock purchase contract.

The applicable prospectus supplement will describe the terms of the stock purchase contracts and stock purchase units, including, if applicable, collateral or depositary arrangements.

Discovery may issue warrants to purchase debt securities, preferred stock, depositary shares or common stock. Discovery may offer warrants separately or together with one or more additional warrants, debt securities, preferred stock, depositary shares or common stock, or any combination of those securities in the form of units, as described in the applicable prospectus supplement. If Discovery issues warrants as part of a unit, the accompanying prospectus supplement will specify whether those warrants may be separated from the other securities in the unit prior to the expiration date of the warrants. The applicable prospectus supplement will also describe the following terms of any warrants:

Each debt security, depositary share, stock purchase contract, stock purchase unit and warrant will be represented either by a certificate issued in definitive form to a particular investor or by one or more global securities representing the entire issuance of securities. Unless the applicable prospectus supplement provides otherwise, certificated securities in definitive form and global securities will be issued in registered form. Definitive securities name you or your nominee as the owner of the security, and in order to transfer or exchange these securities or to receive payments other than interest or other interim payments, you or your nominee must physically deliver the securities to the trustee, registrar, paying agent or other agent, as applicable. Global securities name a depositary or its nominee as the owner of the debt securities, depositary shares, stock purchase contracts, stock purchase units or warrants represented by these global securities. The depositary maintains a computerized system that will reflect each investor’s beneficial ownership of the securities through an account maintained by the investor with its broker/dealer, bank, trust company or other representative, as we explain more fully below.

Discovery may issue registered debt securities, depositary shares, stock purchase contracts, stock purchase units and warrants, and DCH and DCL may issue registered debt securities, in the form of one or more fully registered global securities that will be deposited with a depositary or its nominee identified in the applicable prospectus supplement and registered in the name of that depositary or nominee. In those cases, one or more registered global securities will be issued in a denomination or aggregate denominations equal to the portion of the aggregate principal or face amount of the securities to be represented by registered global securities. Unless and until it is exchanged in whole for securities in definitive registered form, a registered global security may not be transferred except as a whole by and among the depositary for the registered global security, the nominees of the depositary or any successors of the depositary or those nominees.

If not described below, any specific terms of the depositary arrangement with respect to any securities to be represented by a registered global security will be described in the prospectus supplement relating to those securities. We anticipate that the following provisions will apply to all depositary arrangements.

Ownership of beneficial interests in a registered global security will be limited to persons, called participants, that have accounts with the depositary or persons that may hold interests through participants. Upon the issuance of a registered global security, the depositary will credit, on its book-entry registration and transfer system, the participants’ accounts with the respective principal or face amounts of the securities beneficially owned by the participants. Any dealers, underwriters or agents participating in the distribution of the securities will designate the accounts to be credited. Ownership of beneficial interests in a registered global security will be shown on, and the transfer of ownership interests will be effected only through, records maintained by the depositary, with respect to interests of participants, and on the records of participants, with respect to interests of persons holding through participants. The laws of some states may require that some purchasers of securities take physical delivery of these securities in definitive form. These laws may impair your ability to own, transfer or pledge beneficial interests in registered global securities.

So long as the depositary, or its nominee, is the registered owner of a registered global security, that depositary or its nominee, as the case may be, will be considered the sole owner or holder of the securities represented by the registered global security for all purposes under the applicable indenture, deposit agreement, stock purchase contract, unit agreement or warrant agreement. Except as described below, owners of beneficial interests in a registered global security will not be entitled to have the securities represented by the registered global security registered in their names, will not receive or be entitled to receive physical delivery of the securities in definitive form and will not be considered the owners or holders of the securities under the applicable indenture, deposit agreement, stock purchase contract, unit agreement or warrant agreement. Accordingly, each person owning a beneficial interest in a registered global security must rely on the procedures

of the depositary for that registered global security and, if that person is not a participant, on the procedures of the participant through which the person owns its interest, to exercise any rights of a holder under the applicable indenture, deposit agreement, stock purchase contract, unit agreement or warrant agreement. We understand that under existing industry practices, if we request any action of holders or if an owner of a beneficial interest in a registered global security desires to give or take any action that a holder is entitled to give or take under the applicable indenture, deposit agreement, stock purchase contract, unit agreement or warrant agreement, the depositary for the registered global security would authorize the participants holding the relevant beneficial interests to give or take that action, and the participants would authorize beneficial owners owning through them to give or take that action or would otherwise act upon the instructions of beneficial owners holding through them.

Principal, premium, if any, and interest payments on debt securities, and any payments to holders with respect to depositary shares, warrants, stock purchase contracts or stock purchase units, represented by a registered global security registered in the name of a depositary or its nominee will be made to the depositary or its nominee, as the case may be, as the registered owner of the registered global security. None of Discovery, DCH, DCL, the trustees, the warrant agents, the unit agents or any other agent of Discovery, DCH or DCL, agent of the trustees or agent of the warrant agents or unit agents will have any responsibility or liability for any aspect of the records relating to payments made on account of beneficial ownership interests in the registered global security or for maintaining, supervising or reviewing any records relating to those beneficial ownership interests.

We expect that the depositary for any of the securities represented by a registered global security, upon receipt of any payment to holders of principal, premium, interest or other distribution of underlying securities or other property on that registered global security, will immediately credit participants’ accounts in amounts proportionate to their respective beneficial interests in that registered global security as shown on the records of the depositary. We also expect that payments by participants to owners of beneficial interests in a registered global security held through participants will be governed by standing customer instructions and customary practices, as is now the case with the securities held for the accounts of customers or registered in “street name,” and will be the responsibility of those participants.

If the depositary for any of the securities represented by a registered global security is at any time unwilling or unable to continue as depositary or ceases to be a clearing agency registered under the Exchange Act, and a successor depositary registered as a clearing agency under the Exchange Act is not appointed by us within 90 days, we will issue securities in definitive form in exchange for the registered global security that had been held by the depositary. Any securities issued in definitive form in exchange for a registered global security will be registered in the name or names that the depositary gives to the relevant trustee, warrant agent, unit agent or other relevant agent of ours or theirs. It is expected that the depositary’s instructions will be based upon directions received by the depositary from participants with respect to ownership of beneficial interests in the registered global security that had been held by the depositary.

In addition, we may issue the securities as a dividend or distribution or in a subscription rights offering to our existing security holders.

We may directly solicit offers to purchase securities, or agents may be designated to solicit such offers. We will, in the prospectus supplement relating to such offering, name any agent that could be viewed as an underwriter under the Securities Act, and describe any commissions that we must pay. Any such agent will be acting on a best efforts basis for the period of its appointment or, if indicated in the applicable prospectus supplement, on a firm commitment basis. This prospectus may be used in connection with any offering of our securities through any of these methods or other methods described in the applicable prospectus supplement.

The distribution of the securities may be effected from time to time in one or more transactions:

Each prospectus supplement will describe the method of distribution of the securities and any applicable restrictions.

The prospectus supplement with respect to the securities of a particular series will describe the terms of the offering of the securities, including the following:

If any underwriters or agents are utilized in the sale of the securities in respect of which this prospectus is delivered, we will enter into an underwriting agreement or other agreement with them at the time of sale to them, and we will set forth in the prospectus supplement relating to such offering the names of the underwriters or agents and the terms of the related agreement with them.

If a dealer is utilized in the sale of the securities in respect of which the prospectus is delivered, we will sell such securities to the dealer, as principal. The dealer may then resell such securities to the public at varying prices to be determined by such dealer at the time of resale.

If we offer securities in a subscription rights offering to our existing security holders, we may enter into a standby underwriting agreement with dealers, acting as standby underwriters. We may pay the standby underwriters a commitment fee for the securities they commit to purchase on a standby basis. If we do not enter into a standby underwriting arrangement, we may retain a dealer-manager to manage a subscription rights offering for us.

Agents, underwriters, dealers and other persons may be entitled under agreements which they may enter into with us to indemnification by us against certain civil liabilities, including liabilities under the Securities Act, and may be customers of, engage in transactions with or perform services for us in the ordinary course of business.

If so indicated in the applicable prospectus supplement, we will authorize underwriters or other persons acting as our agents to solicit offers by certain institutions to purchase securities from us pursuant to delayed delivery contracts providing for payment and delivery on the date stated in the prospectus supplement. Each contract will be for an amount not less than, and the aggregate amount of securities sold pursuant to such contracts shall not be less nor more than, the respective amounts stated in the prospectus supplement. Institutions with whom the contracts, when authorized, may be made include commercial and savings banks, insurance companies, pension funds, investment companies, educational and charitable institutions and other institutions, but shall in all cases be subject to our approval. Delayed delivery contracts will not be subject to any conditions except that:

Certain agents, underwriters and dealers, and their associates and affiliates may be customers of, have borrowing relationships with, engage in other transactions with, and/or perform services, including investment banking services, for us or one or more of our respective affiliates in the ordinary course of business.

In order to facilitate the offering of the securities, any underwriters may engage in transactions that stabilize, maintain or otherwise affect the price of the securities or any other securities the prices of which may be used to determine payments on such securities. Specifically, any underwriters may overallot in connection with the offering, creating a short position for their own accounts. In addition, to cover overallotments or to stabilize the price of the securities or of any such other securities, the underwriters may bid for, and purchase, the securities or any such other securities in the open market. Finally, in any offering of the securities through a syndicate of underwriters, the underwriting syndicate may reclaim selling concessions allowed to an underwriter or a dealer for distributing the securities in the offering if the syndicate repurchases previously distributed securities in transactions to cover syndicate short positions, in stabilization transactions or otherwise. Any of these activities may stabilize or maintain the market price of the securities above independent market levels. Any such underwriters are not required to engage in these activities and may end any of these activities at any time.

Under Rule 15c6-1 of the Exchange Act, trades in the secondary market generally are required to settle in three business days, unless the parties to any such trade expressly agree otherwise. The applicable prospectus supplement may provide that the original issue date for your securities may be more than three scheduled business days after the trade date for your securities. Accordingly, in such a case, if you wish to trade securities on any date prior to the third business day before the original issue date for your securities, you will be required, by virtue of the fact that your securities initially are expected to settle in more than three scheduled business days after the trade date for your securities, to make alternative settlement arrangements to prevent a failed settlement.

The securities may be new issues of securities and may have no established trading market. The securities may or may not be listed on a national securities exchange. We can make no assurance as to the liquidity of or the existence of trading markets for any of the securities.

Unless the applicable prospectus supplement indicates otherwise, the validity of the securities in respect of which this prospectus is being delivered will be passed upon by Wilmer Cutler Pickering Hale and Dorr LLP.


	Price to public(1)	Underwriting discounts and commissions	Proceeds, before expenses

Per Senior Note	%	%	%
Total	$	$	$


	Page

About this prospectus supplement		S-ii

Where you can find more information and incorporation by reference		S-iii

Forward-looking statements		S-iv

Summary		S-1

Risk factors		S-6

Ratio of earnings to fixed charges		S-9

Use of proceeds		S-10

Capitalization		S-11

Description of senior notes		S-12

Material U.S. federal tax considerations		S-23

Underwriting		S-28

Legal matters		S-31

Experts		S-31


	Page

About This Prospectus		1

Where You Can Find More Information		2

Incorporation by Reference		2

Forward-Looking Statements		3

About the Registrants		5

Selected Financial Data		7

Ratio of Earnings to Fixed Charges and Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends		8

Use of Proceeds		9

Description of Debt Securities		10

Description of Common Stock		19

Description of Preferred Stock		28

Description of Depositary Shares		36

Description of Stock Purchase Contracts and Stock Purchase Units		39

Description of Warrants		40

Forms of Securities		41

Plan of Distribution		43

Legal Matters		45

Experts		46


	As of December 31, 2014
(Amounts in millions, except par values)	Actual			As adjusted
Cash and cash equivalents	$	367		$		⁽¹⁾


Debt:
3.700% Senior Notes due June 2015		850			850
5.625% Senior Notes due August 2019		500			500
5.050% Senior Notes due June 2020		1,300			1,300
4.375% Senior Notes due June 2021		650			650
2.375% Senior Notes due March 2022		365			365
3.300% Senior Notes due May 2022		500			500
3.250% Senior Notes due April 2023		350			350
6.350% Senior Notes due June 2040		850			850
4.950% Senior Notes due May 2042		500			500
4.875% Senior Notes due April 2043		850			850
% Senior Notes due 2025 offered hereby		—
$1.5 billion Revolving Loan due June 2019		38			38
Commercial Paper		229			229
Capital lease obligations		187			187
Unamortized discount		(16	)			⁽²⁾

Debt, net		7,153
Redeemable noncontrolling interests		747			747

Equity:
Series A convertible preferred stock, $0.01 par value; 75 shares authorized; 71 shares issued		1			1
Series C convertible preferred stock, $0.01 par value; 75 shares authorized; 42 shares issued		1			1
Series A common stock, $0.01 par value; 1,700 shares authorized; 151 shares issued		1			1
Series B convertible common stock, $0.01 par value; 100 shares authorized; 7 shares issued		—			—
Series C common stock, $0.01 par value; 2,000 shares authorized; 375 shares issued		4			4
Additional paid-in capital		6,917			6,917
Treasury stock, at cost		(4,763	)		(4,763	)
Retained earnings		3,809			3,809
Accumulated other comprehensive (loss) income		(368	)		(368	)

Total Discovery Communications, Inc. stockholders’ equity		5,602			5,602
Noncontrolling interests		2			2

Total equity		5,604			5,604

Total capitalization	$	13,504		$


Underwriters		Principal amount of senior notes
J.P. Morgan Securities LLC		$
Citigroup Global Markets Inc.
RBS Securities Inc.
BNP Paribas Securities Corp.
Goldman, Sachs & Co.
Wells Fargo Securities, LLC

Total		$


BNP PARIBAS		Goldman, Sachs & Co.		Wells Fargo Securities


	For the Years Ended
	December 31, 2011			December 31, 2010			December 31, 2009
Net income	$	1,133		$	669		$	564
Other comprehensive income, net of tax:
Currency translation adjustments, net		10			(19	)		27
Market value adjustments and reclassifications for securities and derivatives, net		—			7			30

Comprehensive income		1,143			657			621
Comprehensive income attributable to noncontrolling interests		(1	)		(16	)		(15	)

Comprehensive income attributable to Discovery Communications, Inc. stockholders	$	1,142		$	641		$	606


J.P. Morgan		Citigroup		RBS