SUMMARY

This summary highlights selected information contained in this proxy statement/prospectus, or the annexes to this proxy statement/prospectus, and does not contain all the information that may be important to you. Alliance Data and Conversant urge you to read carefully this proxy statement/prospectus and the annexes to this proxy statement/prospectus in their entirety. Additionally, important information is also contained in the documents that we incorporate by reference into this proxy statement/prospectus. See “Where You Can Find More Information” and “Information Incorporated by Reference.” We have included page references in this summary to direct you to a more complete description of the topics presented below.

The Parties

Alliance Data Systems Corporation (See page 98)

Alliance Data is a leading global provider of data-driven marketing and loyalty solutions serving large, consumer-based businesses in a variety of industries. Alliance Data offers a comprehensive portfolio of integrated outsourced marketing solutions, including customer loyalty programs, database marketing services, marketing strategy consulting, analytics and creative services, direct marketing services and private label and co-brand retail credit card programs. Alliance Data focuses on facilitating and managing interactions between its clients and their customers through all consumer marketing channels, including in-store, online, catalog, mail, telephone and email, and emerging channels such as mobile and social media. Alliance Data captures and analyzes data created during each customer interaction, leveraging the insight derived from that data to enable clients to identify and acquire new customers and to enhance customer loyalty. Alliance Data believes that its services are becoming increasingly valuable as businesses shift marketing resources away from traditional mass marketing toward more targeted marketing programs that provide measurable returns on marketing investments. Alliance Data’s client base of more than 1,300 companies consists primarily of large consumer-based businesses, including well-known brands such as Bank of Montreal, Sobeys, Shell Canada, Procter & Gamble, AstraZeneca, Hilton, Bank of America, General Motors, FedEx, Kraft, Victoria’s Secret, Lane Bryant, Pottery Barn, J. Crew and Ann Taylor. Alliance Data’s client base is diversified across a broad range of end-markets, including financial services, specialty retail, grocery stores, drug stores, petroleum retail, automotive, hospitality and travel, telecommunications and pharmaceuticals. Alliance Data believes its comprehensive suite of marketing solutions offers it a significant competitive advantage, as many of its competitors offer a more limited range of services. Alliance Data believes the breadth and quality of its service offerings have enabled it to establish and maintain long-standing client relationships.

Alliance Data was incorporated under the laws of the State of Delaware on February 23, 1995. Its corporate headquarters are located at 7500 Dallas Parkway, Suite 700, Plano, Texas 75024 and its telephone number at that address is 214-494-3000. Alliance Data’s website address is www.alliancedata.com. Information contained on Alliance Data’s website is not incorporated by reference and does not constitute a part of this proxy statement/prospectus.

Conversant, Inc. (See page 98)

Conversant offers a comprehensive range of digital marketing services across its affiliate marketing and media segments. Conversant believes the unique combination of its scale and breadth of services; vast amounts of proprietary data spanning online and offline channels; cross-device capabilities; and industry leading approach to personalized communication positions Conversant to be the digital marketing services provider of choice for major marketers and the advertising agencies that service them. Conversant’s services help marketers achieve a variety of strategic objectives, including customer relationship management, new customer acquisition and branding. In the first quarter of 2014, the company changed its corporate name from ValueClick, Inc. to Conversant, Inc.

Conversant was incorporated under the laws of the State of Delaware on October 9, 1998. Its corporate headquarters are located at 30699 Russell Ranch Road, Suite 250, Westlake Village, California 91362, and its telephone number at that address is (818) 575-4500. Conversant’s website address is www.conversantmedia.com. Information contained on Conversant’s website is not incorporated by reference and does not constitute a part of this proxy statement/prospectus.

The Merger Subsidiary (See page 99)

Amber Sub LLC, or the Merger Subsidiary, is a wholly-owned subsidiary of Alliance Data and was formed as a limited liability company under the laws of the State of Delaware on September 5, 2014 for the purpose of effecting the merger. Subject to the terms and conditions of the merger agreement and upon closing of the merger, Conversant will merge with and into the Merger Subsidiary, which will survive as a wholly-owned subsidiary of Alliance Data. At the effective time of the merger, the name of the Merger Subsidiary will change to Conversant LLC. However, if the “Reverse Merger Condition” described below is satisfied, Conversant will be the surviving entity in the merger. See “Material U.S. Federal Income Tax Consequences.”

The Merger Subsidiary has not conducted any activities other than those incidental to its formation and the matters contemplated by the merger agreement, including the preparation of applicable regulatory filings in connection with the merger.

Risk Factors (See page 28)

Before voting at the Conversant special meeting, Conversant’s stockholders should carefully consider all of the information contained in or incorporated by reference into this proxy statement/prospectus, as well as the specific factors under the heading “Risk Factors,” including the risks that:

The Merger

The Merger Agreement (See page 81)

Alliance Data and Conversant have entered into the merger agreement attached as Annex A to this proxy statement/prospectus. We encourage you to read the entire merger agreement carefully because it is the principal document governing the merger.

Effect of the Merger (See page 39)

Subject to the terms and conditions of the merger agreement, at the effective time of the merger, Conversant will merge with and into the Merger Subsidiary, with the Merger Subsidiary surviving the merger as a wholly-owned subsidiary of Alliance Data. However, if the “Reverse Merger Condition” described below is satisfied, Conversant will be the surviving entity in the merger. See “Material U.S. Federal Income Tax Consequences.” We expect that, on a fully-diluted basis, the existing stockholders of Alliance Data and the former stockholders of Conversant will own approximately 93% and 7%, respectively, of the outstanding Alliance Data common stock following the merger.

Consideration to be Received in the Merger (See page 82)

In the proposed merger, Conversant stockholders will receive for each share of Conversant common stock (other than shares (i) held by Alliance Data or any of its subsidiaries, (ii) issued pursuant to a Conversant restricted stock award grant that remains unvested upon closing of the merger, (iii) as to which the holder has properly exercised appraisal rights or (iv) as to which a valid Cash Election or Stock Election has been made) the combination, which we refer to as the Base Consideration, of (x) 0.07037 of a share, which we refer to as the Fixed Exchange Ratio, of Alliance Data common stock and (y) an amount in cash equal to $35.00 minus the product of the volume weighted average price per share of Alliance Data common stock on the New York Stock Exchange, or the NYSE, for the consecutive period of fifteen trading days ending on the close of trading on the second trading day immediately preceding the closing of the merger, which we refer to as the Parent Closing Trading Price, multiplied by the Fixed Exchange Ratio, which cash portion of the Base Consideration we refer to as the Per Share Cash Consideration. Notwithstanding the foregoing, the Per Share Cash Consideration will not exceed $18.62, which we refer to as the Per Share Cash Cap, and will not be less than $14.98, which we refer to as the Per Share Cash Minimum. In the event that the Per Share Cash Cap or Per Share Cash Minimum is reached, the Per Share Cash Consideration will be fixed at the Per Share Cash Cap or the Per Share Cash Minimum, as applicable, and the value that Conversant stockholders will receive for each share of Conversant common stock will fluctuate below or above $35.00, as applicable, to the extent that the Parent Closing Trading Price is below $232.75 or above $284.48. For more information regarding the merger consideration provisions contained in the merger agreement, see “The Merger—Consideration to be Received in the Merger.”

In lieu of the Base Consideration described above, each Conversant stockholder will have the right to elect to receive for each share of Conversant common stock eligible to receive merger consideration (1) cash equal to $35.00, except in the case in which (i) the Per Share Cash Cap or Per Share Cash Minimum has been reached, in which case, cash equal to the sum of (x) the Fixed Exchange Ratio multiplied by the Parent Closing Trading Price and (y) the Per Share Cash Consideration, which we refer to as the Cash Election, or (2) a number of shares of Alliance Data common stock equal to the sum of (x) the Fixed Exchange Ratio and (y) the quotient of the Per Share Cash Consideration divided by the Parent Closing Trading Price, which election we refer to as a Stock Election, and which consideration we refer to as the Per Share Stock Election Consideration, and, in the case of either a Cash or Stock Election, both are subject to proration as described below.

The Base Consideration otherwise payable on each share of Conversant common stock as to which either a Cash Election or Stock Election has been made, will be pooled and reallocated among all such shares of Conversant common stock as to which a Cash Election or Stock Election has been made. This pooling and reallocation means that each such share gets, to the greatest extent possible, all cash or all Alliance Data common

stock, but with the consideration payable on each such share of Conversant common stock pro rated to the extent there is not enough cash or enough Alliance Data common stock to pay pursuant to each such election (and with the difference between such pro rated amount being made up in the remaining Alliance Data common stock or cash, as applicable). The aggregate amount of cash and shares of Alliance Data common stock payable by Alliance Data in the merger shall equal the aggregate amount of cash and shares of Alliance Data common stock that would have otherwise been payable by Alliance Data if no election had been made by Conversant stockholders, and all such stockholders were to receive the Base Consideration. Shares of Conversant common stock (i) held in Conversant’s treasury, (ii) held by Alliance Data or any of its subsidiaries, (iii) issued pursuant to Conversant restricted stock award grants that remain unvested upon closing of the merger, or (iv) as to which the holder has properly exercised appraisal rights will not receive the merger consideration (except that shares of Conversant common stock that were issued pursuant to Conversant restricted stock award grants that remain unvested upon closing of the merger shall be entitled to receive the consideration described under the heading “The Merger—Treatment of Conversant Stock Options and Other Equity Awards”).

The following table illustrates the value of the Base Consideration per share of Conversant common stock for different hypothetical Parent Closing Trading Prices (with the shaded lines defining the lower and upper boundaries of the collar).

For tabular illustrations of proration calculations for different hypothetical Cash Elections and Stock Elections that may be made by Conversant stockholders under the terms of the merger agreement, see Annex D to this proxy statement/prospectus.

The tables included or referenced above are for illustrative purposes only. The value of the merger consideration that a Conversant stockholder actually receives will be based on the actual Parent Closing Trading Price, and the mix of merger consideration that an electing Conversant stockholder actually receives will depend on the elections made by other Conversant stockholders.

Alliance Data will not issue any fractional shares of its common stock in the merger. Instead, Conversant stockholders will receive cash in lieu of any fractional shares in an amount determined by multiplying (x) the closing price of Alliance Data common stock reported on the NYSE on the trading day immediately preceding the date of the merger’s closing by (y) the fraction of a share of Alliance Data common stock to which the stockholder would otherwise be entitled.

The merger agreement provides for adjustments to the merger consideration to reflect fully the effect of any stock dividend, subdivision, reorganization, reclassification, recapitalization, stock split, reverse stock split, combination or exchange of shares, or any similar event with respect to Alliance Data common stock or Conversant common stock occurring between September 11, 2014 and the effective time of the merger.

Treatment of Conversant Stock Options and Other Equity Awards (See page 84)

Pursuant to the merger agreement, each Conversant stock option that is outstanding and unexercised immediately prior to the effective time of the merger will be converted into an option to acquire a number of shares of Alliance Data common stock, rounded down to the nearest whole share, determined by multiplying the number of shares underlying the existing Conversant stock option by the Per Share Stock Election Consideration, at an exercise price per share of Alliance Data common stock, rounded up to the nearest whole cent, equal to the per-share exercise price for the Conversant stock option immediately prior to the effective time of the merger divided by the Per Share Stock Election Consideration.

At the effective time of the merger, each outstanding Conversant restricted stock award that is not vested by its terms upon or before the closing of the merger will, pursuant to the merger agreement, be converted into a restricted stock award with respect to whole shares of Alliance Data common stock, with the number of shares of Alliance Data common stock subject to each such converted restricted stock award, rounded down to the nearest whole share, determined by multiplying the number of shares of Conversant common stock subject to the existing restricted stock award by the Per Share Stock Election Consideration. Each Conversant restricted stock award that is vested by its terms upon the closing of the merger will, at the effective time of the merger, entitle the holder thereof to the merger consideration described under “—Consideration to be Received in the Merger.” However, in connection with the merger, Conversant’s President and Chief Executive Officer John Giuliani entered into an agreement with Alliance Data to, among other things, waive his right to acceleration of his outstanding unvested restricted stock awards. Additional information regarding this agreement and Mr. Giuliani’s

restricted stock awards is included under the headings “The Merger—Interests of Directors and Executive Officers of Conversant in the Merger—Treatment of Conversant Stock Options and Other Equity Awards” and “The Merger—Letter Agreement with John Giuliani.”

Each converted stock option or restricted stock award will be issued in respect of Alliance Data common stock under the Alliance Data 2010 Omnibus Incentive Plan, subject to the same terms and conditions as the respective Conversant stock option or restricted stock award as in effect immediately prior to the effective time of the merger (taking into account the adjustments to the number of shares and exercise price). Each Conversant stock incentive plan will be terminated by the board of directors of Conversant effective as of immediately prior to the effective time of the merger.

Approval of Alliance Data’s Board of Directors (See page 48)

After careful consideration, Alliance Data’s board of directors and the managers of the Merger Subsidiary unanimously approved the merger agreement, and Alliance Data’s board of directors unanimously approved the issuance of Alliance Data common stock in the merger. The compensation committee of Alliance Data’s board of directors unanimously approved the grant of replacement equity awards to the holders of Conversant equity awards, as provided in the merger agreement. See “The Merger—Treatment of Conversant Stock Options and Other Equity Awards.”

Recommendations of the Conversant Board of Directors (See page 48)

After careful consideration, the Conversant board of directors unanimously recommends that Conversant stockholders vote (1) “FOR” the proposal to adopt the merger agreement, (2) “FOR” the proposal to approve, on an advisory (non-binding) basis, the compensation that may be paid or become payable to Conversant’s named executive officers in connection with the merger and the agreements and understandings pursuant to which such compensation may be paid or become payable, and (3) “FOR” the proposal to adjourn the Conversant special meeting, if necessary or appropriate, to solicit additional proxies in favor of the foregoing proposals.

Opinion of Conversant’s Financial Advisor (See page 51 and Annex F)

In connection with the merger, Morgan Stanley & Co. LLC, Conversant’s financial advisor (which we refer to in this proxy statement/prospectus as Morgan Stanley), rendered to Conversant’s board of directors its oral opinion, subsequently confirmed in writing, that as of September 10, 2014, and based upon and subject to the various assumptions, procedures, factors, qualifications and limitations set forth in the written opinion, the consideration to be received by the holders of shares of Conversant common stock pursuant to the merger agreement was fair from a financial point of view to such holders. The full text of the written opinion of Morgan Stanley, dated as of September 10, 2014, is attached as Annex F to this proxy statement/prospectus and is incorporated by reference in this proxy statement/prospectus in its entirety. The opinion sets forth, among other things, the assumptions made, procedures followed, matters considered and limitations on the scope of the review undertaken by Morgan Stanley in rendering its opinion. The summary of the opinion of Morgan Stanley in this proxy statement/prospectus is qualified in its entirety by reference to the full text of the opinion. Morgan Stanley’s opinion is directed to Conversant’s board of directors and addresses only the fairness from a financial point of view of the consideration to be received by the holders of shares of Conversant common stock pursuant to the merger agreement as of the date of the opinion. Morgan Stanley’s opinion did not in any manner address the prices at which shares of Conversant common stock or Alliance Data common stock would trade at any time in the future, or any compensation or compensation agreements arising from (or relating to) the merger which benefit any officer, director or employee of Conversant, or any class of such persons. The opinion is addressed to the Conversant board of directors and does not constitute a recommendation to any stockholder of Conversant as to how to vote at the stockholders’ meeting to be held in connection with the transactions contemplated by the merger agreement, what elections to make with respect to the form of consideration to be received, or any other action with respect to the transactions contemplated by the merger agreement.

Interests of Conversant’s Directors and Executive Officers in the Merger (See page 65)

Conversant stockholders should be aware that the directors and executive officers of Conversant have interests in the proposed merger that are different from, or are in addition to, the interests of Conversant stockholders generally. These interests relate to the treatment of equity-based compensation awards held by directors and executive officers of Conversant in the merger, provision of severance benefits, and the indemnification of Conversant’s directors and officers by Alliance Data.

Material U.S. Federal Income Tax Consequences of the Merger (See page 76)

The federal income tax consequences of the merger will differ depending on whether the forward merger structure or reverse merger structured is used. The reverse merger structure (i.e., Conversant will be the surviving entity in the merger) will be used if the “Reverse Merger Condition” is satisfied. The forward merger structure will be used (i.e., Conversant will not be the surviving entity in the merger) if the Reverse Merger Condition is not satisfied. The Reverse Merger Condition will be satisfied if on the trading date immediately before the closing date of the merger, the aggregate value of all Alliance Data common stock to be received by all Conversant stockholders as a group in the merger would be less than 40% of the aggregate value of all consideration to be received by all Conversant stockholders as a group in, or in connection with, the merger (i.e., cash plus Alliance Data common stock). Because the structure that will ultimately be used to complete the merger will depend on a variety of factors, including, in particular, the value of Alliance Data stock as of the trading date immediately before the closing date of the merger, we will not know at the time of the stockholder meeting which structure will be used. As a result, Conversant stockholders will not know which of the alternative tax consequences described below will be applicable to them at the time they vote on the merger.

If the merger is structured as a forward merger, Alliance Data and Conversant intend for the merger to qualify as a reorganization within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as amended, or the Code, for U.S. federal income tax purposes. Assuming the merger so qualifies, for U.S. federal income tax purposes:

If the reverse merger structure is used, the merger will not qualify as a reorganization within the meaning of Section 368(a) of the Code. In that case, holders of Conversant common stock whose shares are exchanged in the merger for merger consideration will generally recognize gain or loss in an amount equal to the difference between (i) the fair market value, as of the effective time of the merger, of Alliance Data common stock received plus any cash received and (ii) the holder’s adjusted tax basis in the shares of Conversant common stock surrendered. Such gain or loss generally will be determined separately with respect to each block of Conversant shares surrendered in the merger, and generally will be long-term capital gain or loss if the holder’s holding period for the Conversant common stock surrendered exceeds one year at the effective time of the merger.

We would use the reverse merger structure to avoid the substantial corporate level tax that would result if the merger were to be structured as a forward merger and were to fail to satisfy the requirements for a reorganization under Section 368(a) of the Internal Revenue Code.

The tax consequences to Conversant stockholders of the merger are described in greater detail in the section entitled “Material U.S. Federal Income Tax Consequences.” You are urged to consult with your own tax advisor as to the tax consequences of the merger in your particular circumstances, including the applicability and effect of the alternative minimum tax and any state, local or foreign and other tax laws and of changes in those laws.

Accounting Treatment of the Merger (See page 70)

Each of Alliance Data and Conversant prepares its financial statements in accordance with United States generally accepted accounting principles, or GAAP. The merger will be accounted for using the acquisition method of accounting with Alliance Data treated as the acquirer of Conversant for accounting purposes. This means that the assets, liabilities and commitments of Conversant, the accounting acquiree, are adjusted to their estimated fair value at the acquisition date. Under the acquisition method of accounting, definite-lived intangible assets are amortized over their remaining useful lives. Goodwill and other indefinite-lived intangible assets are tested for impairment at least annually.

Appraisal Rights (See page 72)

Alliance Data stockholders do not have appraisal rights in connection with the merger.

Subject to the closing of the merger, record holders of Conversant common stock who do not vote in favor of the Merger Proposal and otherwise comply fully with the requirements and procedures of Section 262 of the General Corporation Law of the State of Delaware, or the DGCL, are entitled to exercise their rights of appraisal, which generally entitle stockholders to receive a cash payment equal to the fair value of their Conversant common stock in connection with the merger. Notwithstanding the foregoing, holders of shares of Conversant common stock that choose to make an election with respect to the form of merger consideration they wish to receive will be deemed to waive their rights of appraisal. The full text of Section 262 of the DGCL is attached as Annex C to this proxy statement/prospectus.

Regulatory Approvals Required for the Merger (See page 70)

Alliance Data, Conversant and the Merger Subsidiary have each agreed to use reasonable best efforts in order to obtain all regulatory approvals required in order to complete the merger. These approvals include antitrust filings with the U.S. Department of Justice and the U.S. Federal Trade Commission and expiration or termination of the required waiting periods. Alliance Data and Conversant each filed pre-merger notification and report forms with the U.S. antitrust authorities pursuant to the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, or the HSR Act, and, in accordance with the merger agreement, requested “early termination” of the waiting period, which request for “early termination” was granted on September 24, 2014. On September 24, 2014, Alliance Data and John Giuliani, Conversant’s President and Chief Executive Officer, each filed notifications pursuant to the HSR Act with respect to Mr. Giuliani’s receipt of Alliance Data common stock upon closing of the merger and requested “early termination” of the waiting period, which began on September 24, 2014.

Alliance Data and Conversant are also required to file with the antitrust regulators in Germany. The companies submitted their notification to the Federal Cartel Office, or the FCO, in Germany on September 29, 2014. Under German law, the FCO has until October 29, 2014, which is one month from the filing of a complete notification, to conduct an initial review of the merger. The FCO may take an additional three months to further investigate the merits of the acquisition. The FCO may give its authorization before the end of the waiting periods described above. The merger cannot be consummated before receiving authorization from the FCO or the expiration of the applicable waiting period.

Conditions to Closing of the Merger (See page 90)

Alliance Data and Conversant expect to complete the merger after all the conditions to the merger in the merger agreement are satisfied or waived, including receipt of the requisite stockholder approval at the Conversant special meeting and all required regulatory approvals. Alliance Data and Conversant currently expect to complete the merger in the fourth quarter of 2014. However, it is possible that factors outside of the parties’ control could require that the merger be completed at a later time or not completed at all.

The obligation of each party to complete the merger is subject to the satisfaction or waiver of several conditions set forth in the merger agreement, which are summarized below:

The obligation of Conversant to complete the merger is subject to the satisfaction or waiver of the following additional conditions:

The obligation of Alliance Data to complete the merger is subject to the satisfaction or waiver of the following additional conditions:

The merger agreement provides that any or all of the additional conditions described above may be waived, in whole or in part, by Alliance Data or Conversant, to the extent legally allowed. Neither Alliance Data nor Conversant currently expects to waive any material condition to the closing of the merger.

Timing of the Merger (See page 81)

The merger is expected to be completed in the fourth quarter of 2014, subject to the receipt of necessary regulatory approvals and the satisfaction or waiver of other closing conditions.

No Solicitation of Other Offers; No Change of Board Recommendation (See page 92)

The merger agreement contains “no solicitation” provisions that, subject to certain exceptions, require Conversant to, and to cause each of its controlled affiliates to, and use its reasonable best efforts to cause each of its and its controlled affiliates’ representatives to:

However, prior to the approval of the Merger Proposal by Conversant stockholders, if Conversant receives an unsolicited written Company Takeover Proposal that (i) Conversant’s board of directors determines in good faith to be bona fide, (ii) did not result from Conversant’s or its representatives breach or violation of, or failure to perform the “no solicitations” provisions, and (iii) Conversant’s board of directors determines in good faith constitutes or could reasonably be expected to lead to a Company Superior Proposal (as such term is defined in the merger agreement and described in more detail under the heading “The Merger Agreement”) and that the failure to take such action would be inconsistent with the directors’ fiduciary duties under applicable law, then Conversant and its representatives may:

Termination of the Merger Agreement (See page 95)

Either Alliance Data or Conversant may terminate the merger agreement at any time prior to the effective time of the merger if:

Alliance Data may terminate the merger agreement if:

Conversant may terminate the merger agreement if:

Termination Fee (See page 96)

In the merger agreement, Conversant has agreed to pay Alliance Data a termination fee equal to $65.0 million if the merger agreement is terminated:

This termination fee could discourage other companies from seeking to acquire or merge with Conversant.

Listing of Alliance Data Common Stock; Delisting and Deregistration of Conversant Common Stock (See page 75)

Prior to the closing of the merger, Alliance Data has agreed to use its reasonable best efforts to cause the shares of Alliance Data common stock to be issued in the merger to be approved for listing on the NYSE. This approval is a condition to both Conversant’s and Alliance Data’s obligation to complete the merger. If the merger is completed, Conversant common stock will cease to be listed on The NASDAQ Global Select Market, and its shares will be deregistered under the Exchange Act.

Comparison of Stockholders’ Rights (See page 120)

Conversant stockholders, whose rights are currently governed by Conversant’s second amended and restated certificate of incorporation and Conversant’s amended and restated bylaws, will become stockholders of Alliance Data and their rights will be governed by the second amended and restated certificate of incorporation of Alliance Data and the fourth amended and restated bylaws of Alliance Data. These differences are described in detail under “Comparison of Stockholders’ Rights.”

Dividends (See page 26)

Under the terms of the merger agreement, each of Alliance Data and Conversant is prohibited from paying dividends on its common stock and from repurchasing shares of its common stock during the pendency of the merger.

Litigation Related to the Merger (See page 75)

On September 12, 2014, a putative stockholder class action complaint, captioned Palkon v. Conversant, Inc., et al., No. 56-2014-00457860-CU-BT-VTA (Superior Court, Ventura County), was filed against Conversant, Conversant’s directors, Alliance Data and the Merger Subsidiary in the Superior Court of the State of California in Ventura County. Additionally, on September 16, 2014, a second putative stockholder class action complaint, captioned Leinoff v. Conversant, Inc., et al., No. BC-557818 (Superior Court, Los Angeles County), was filed against Conversant, Conversant’s directors, Alliance Data and the Merger Subsidiary in the Superior Court of the State of California in Los Angeles County. On September 19, 2014, a third putative stockholder class action complaint, captioned Blaze v. Conversant, Inc., et al., No. BC-558100 (Superior Court, Los Angeles County), was filed against Conversant, Conversant’s directors, Alliance Data and the Merger Subsidiary, also in the Superior Court of the State of California in Los Angeles County. On September 26, 2014, a fourth putative class action stockholder complaint, captioned Feliciano v. Buzby, et al., No. 10174 (Chancery Court, Delaware) was filed against Conversant, Conversant’s directors, Alliance Data and the Merger Subsidiary in the Court of Chancery of the State of Delaware. On September 30, 2014, a fifth putative stockholder class action complaint, captioned Naclerio v. Conversant, Inc., et al., No. BC559187 (Superior Court, Los Angeles County) was filed against Conversant, Conversant’s directors, Alliance Data, and the Merger Subsidiary, also in the Superior Court of the State of California in Los Angeles County.

Each lawsuit alleges that members of the Conversant board of directors breached their fiduciary duties in connection with the proposed sale of Conversant to Alliance Data. Each complaint also alleges that Conversant, Alliance Data and the Merger Subsidiary aided and abetted the alleged breach of fiduciary duty. The complaints seek, among other things, injunctive relief and other equitable relief, in addition to unspecified fees and costs. Conversant, Conversant’s directors, Alliance Data and the Merger Subsidiary believe these lawsuits are without merit and intend to defend against each of them vigorously.

The Meeting

The Conversant Special Meeting (See page 100)

At the Conversant special meeting, Conversant stockholders will be asked to vote on the following proposals:

Closing of the merger is conditioned on, among other things, the adoption by Conversant stockholders of the merger agreement.

The board of directors of Conversant unanimously recommends that you vote (1) “FOR” the proposal to adopt the merger agreement, which is necessary to effect the merger, (2) “FOR” the proposal to approve, on an

advisory (non-binding) basis, the compensation that may be paid or become payable to Conversant’s named executive officers in connection with the merger and the agreements and understandings pursuant to which such compensation may be paid or become payable, and (3) “FOR” the proposal to adjourn the Conversant special meeting, if necessary or appropriate, to solicit additional proxies in favor of the foregoing proposals.

All Conversant stockholders of record at the close of business on the record date are entitled to vote at the special meeting of Conversant stockholders. As of the close of business on the record date, shares of Conversant common stock were issued and outstanding.

If a quorum is present, the affirmative vote of a majority of the outstanding shares of Conversant common stock entitled to vote on the proposal at the special meeting is required to adopt the merger agreement. If a quorum is present, the affirmative vote of the holders of a majority of the votes cast on the proposal at the special meeting, in person or by proxy, is required to approve the proposal to approve on an advisory (non-binding) basis the compensation that may be paid or become payable to Conversant’s named executive officers in connection with the merger. Whether or not a quorum is present, the affirmative vote of the holders of a majority of the shares entitled to vote at the special meeting and present in person or by proxy is required to adjourn the special meeting.

Voting by Conversant Directors and Executive Officers (See page 101)

Concurrently with the execution of the merger agreement, each of Conversant’s directors and executive officers executed a Voting Agreement with Alliance Data that requires, among other things and subject to the terms and conditions and exceptions contained in the Voting Agreement, such Conversant directors and executive officers to (i) vote in favor of (and to grant a proxy to Alliance Data, or one of Alliance Data’s designated representatives, to vote in favor of) adoption of the merger agreement, the merger and the other transactions contemplated thereby, (ii) vote against any Company Takeover Proposal (as defined in the merger agreement), or any proposal or transaction involving Conversant or amendments to organizational documents of Conversant that would reasonably be expected to materially impede, interfere with, delay or adversely affect the merger or the other transactions contemplated by the merger agreement or change the voting rights of any class of capital stock of Conversant and (iii) not transfer such directors’ or officers’ shares of Conversant common stock prior to the earliest to occur of certain events, including the closing of the merger or the termination of the merger agreement, subject to certain permitted transfers to permitted transferees who agree to become bound by the Voting Agreement. As of September 11, 2014, Conversant’s directors and executive officers beneficially owned shares of, or securities convertible into or exercisable for, Conversant common stock representing approximately 6.5% of the outstanding shares of Conversant common stock on a fully-diluted basis. As of the record date for the Conversant special meeting, Conversant’s directors and executive officers beneficially owned shares of, or securities convertible into or exercisable for, Conversant common stock representing approximately      % of the outstanding shares of Conversant common stock on a fully-diluted basis. A copy of the full text of the Voting Agreement is attached as Annex B to this proxy statement/prospectus.

SELECTED HISTORICAL FINANCIAL DATA OF ALLIANCE DATA

The following table sets forth Alliance Data’s selected historical consolidated financial and other data for the periods ended and as of the dates indicated. The income statement, cash flow and certain operating data for the fiscal years ended December 31, 2013, 2012 and 2011 and the balance sheet data as of December 31, 2013 and 2012 have been derived from Alliance Data’s audited consolidated financial statements incorporated by reference into this proxy statement/prospectus. The income statement, cash flow and certain operating data for the fiscal years ended December 31, 2010 and 2009 and the balance sheet data as of December 31, 2011, 2010 and 2009 have been derived from Alliance Data’s audited consolidated financial statements that are not incorporated by reference into this proxy statement/prospectus. The income statement, cash flow and certain operating data for the six months ended June 30, 2014 and 2013 and the balance sheet data as of June 30, 2014 have been derived from Alliance Data’s unaudited condensed consolidated financial statements incorporated by reference into this proxy statement/prospectus. The balance sheet data as of June 30, 2013 has been derived from Alliance Data’s unaudited condensed consolidated financial statements that are not incorporated by reference into this proxy statement/prospectus. The data presented below should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the consolidated financial statements and the related notes contained in Alliance Data’s most recent Annual Report on Form 10-K and its Quarterly Report on Form 10-Q for the six months ended June 30, 2014, incorporated by reference into this proxy statement/prospectus. See “Where You Can Find More Information” and “Information Incorporated By Reference” beginning on page 133 of this proxy statement/prospectus.

Alliance Data uses adjusted EBITDA and adjusted EBITDA, net as an integral part of our internal reporting to measure the performance of its reportable segments and to evaluate the performance of its senior management. Adjusted EBITDA and adjusted EBITDA, net are each considered an important indicator of the operational strength of its businesses. Adjusted EBITDA eliminates the uneven effect across all business segments of considerable amounts of non-cash depreciation of tangible assets and amortization of intangible assets, including certain intangible assets that were recognized in business combinations. A limitation of this measure, however, is that it does not reflect the periodic costs of certain capitalized tangible and intangible assets used in generating revenues in Alliance Data’s businesses. Management evaluates the costs of such tangible and intangible assets, such as capital expenditures, investment spending and return on capital and therefore the effects are excluded from adjusted EBITDA. Adjusted EBITDA also eliminates the non-cash effect of stock compensation expense. Stock compensation expense is not included in the measurement of segment adjusted EBITDA provided to the chief operating decision maker for purposes of assessing segment performance and decision making with respect to resource allocations. In addition to the above, adjusted EBITDA, net also excludes the interest associated with financing our credit card and loan receivables, which represents securitization funding costs and interest on deposits, and the percentage of the adjusted EBITDA attributable to the non-controlling interest. Alliance Data believes that adjusted EBITDA and adjusted EBITDA, net provide useful information to our investors regarding our performance and overall results of operations. Adjusted EBITDA and adjusted EBITDA, net are not intended to be performance measures that should be regarded as an alternative to, or more meaningful than, either operating income or net income as indicators of operating performance or to cash flows from operating activities as a measure of liquidity. In addition, adjusted EBITDA and adjusted EBITDA, net are not intended to represent funds available for dividends, reinvestment or other discretionary uses, and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP.

The adjusted EBITDA and adjusted EBITDA, net measures presented by Alliance Data herein may not be comparable to similarly titled measures presented by other companies, and may not be identical to corresponding measures used in its various agreements.

SELECTED HISTORICAL FINANCIAL DATA OF CONVERSANT

The following table sets forth Conversant’s summary selected historical consolidated financial and other data for the periods ended and as of the dates indicated. The consolidated statements of operations for the fiscal years ended December 31, 2013, 2012 and 2011 and the balance sheet data as of December 31, 2013 and 2012 have been derived from Conversant’s audited consolidated financial statements incorporated by reference into this proxy statement/prospectus. The consolidated statements of operations data for the fiscal years ended December 31, 2010 and 2009 and the consolidated balance sheet data as of December 31, 2011, 2010 and 2009 have been derived from Conversant’s unaudited consolidated financial statements that are not incorporated by reference into this proxy statement/prospectus and as recast for discontinued operations and the reclassification of certain expenses. The consolidated statement of operations for the six months ended June 30, 2014 and 2013 and the balance sheet data as of June 30, 2014 have been derived from Conversant’s unaudited condensed consolidated financial statements incorporated by reference into this proxy statement/prospectus. The balance sheet data as of June 30, 2013 has been derived from Conversant’s unaudited condensed consolidated financial statements that are not incorporated by reference into this proxy statement/prospectus. The data presented below should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the consolidated financial statements and the related notes contained in Conversant’s most recent Annual Report on Form 10-K and its Quarterly Report on Form 10-Q for the six months ended June 30, 2014, incorporated by reference into this proxy statement/prospectus, and unaudited pro forma condensed combined financial information and related notes included elsewhere in this proxy statement/prospectus.

CONSOLIDATED STATEMENT OF OPERATIONS DATA⁽¹⁾

The results of operations of the following dispositions and disposal groups are reflected in discontinued operations for all periods:

Consolidated Balance Sheet Data

Adjusted EBITDA as a Non-GAAP Performance Measure

In evaluating its business, Conversant considers earnings from continuing operations before interest, income taxes, depreciation, amortization, stock-based compensation and acquisition related costs, which it refers to as Adjusted EBITDA, a non-GAAP financial measure, as a key indicator of financial operating performance and as a measure of the ability to generate cash for operational activities and future capital expenditures. Conversant uses Adjusted EBITDA in evaluating the overall performance of its business operations. Conversant believes that this measure may also be useful to investors because it eliminates the effects of period-to-period changes in income from interest on our cash equivalents, note receivable and borrowings and the costs associated with income tax expense, capital investments, acquisitions and stock-based compensation, which are not directly attributable to the underlying performance of Conversant’s continuing business operations. Investors should not consider this measure in isolation or as a substitute for income from operations, or cash flow from operations determined under GAAP or any other measure for determining operating performance that is calculated in accordance with GAAP. In addition, because Adjusted EBITDA is a non-GAAP measure, it may not necessarily be comparable to similarly titled measures employed by other companies.

The following is a reconciliation of Conversant’s net income from continuing operations to Adjusted EBITDA: