(1)

Represents the maximum number of shares of Kinder Morgan, Inc. Class P common stock estimated to be issuable upon the completion of the mergers described herein.

(2)

The proposed maximum aggregate offering price was calculated based upon the market value of the KMP common units, the KMR shares and the EPB common units, in each case held by the public unitholders or shareholders of such entities (the securities to be converted into the right to receive the merger consideration in the mergers), in accordance with Rules 457(c) and 457(f) under the Securities Act as follows: (A) the sum of (i) the product of (a) $96.95, the average of the high and low prices per unit of the KMP common units as reported on the New York Stock Exchange on August 25, 2014 and (b) 306,326,050, the estimated maximum number of KMP common units that may be exchanged for the merger consideration in the KMP merger, (ii) the product of (a) $98.72, the average of the high and low prices per share of the KMR shares as reported on the New York Stock Exchange on August 25, 2014 and (b) 116,756,145, the estimated maximum number of KMR shares that may be exchanged for the merger consideration in the KMR merger, and (iii) the product of (a) $41.895, the average of the high and low prices per unit of the EPB common units as reported on the New York Stock Exchange on August 25, 2014 and (b) 139,720,675, the estimated maximum number of EPB common units that may be exchanged for the merger consideration in the EPB merger, minus (B) $3,948,832,697, the estimated aggregate amount of cash to be paid by the registrant as merger consideration.

(3)

Calculated by multiplying the proposed maximum aggregate offering price by 0.0001288.

SUMMARY TERM SHEET

        The following summary, together with "Questions and Answers about the KMP Special Meeting and the Proposals," highlights selected information contained in this proxy statement/prospectus. It may not contain all of the information that may be important in your consideration of the proposed KMP merger. To understand more fully the Transactions (as defined below) and the matters to be voted on at the KMP special meeting, we encourage you to read carefully this proxy statement/prospectus, its annexes and the documents we have incorporated by reference into this proxy statement/prospectus before voting. See "Where You Can Find More Information" on page 184. Where appropriate, we have set forth a section and page reference directing you to a more complete description of the topics described in this summary.

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Frequently Used Terms.  A few frequently used terms may be helpful for you to have in mind at the outset. This document refers to:

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Kinder Morgan, Inc., a Delaware corporation, as "KMI";

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Kinder Morgan Energy Partners, L.P., a Delaware limited partnership, as "KMP";

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Kinder Morgan Management, LLC, a Delaware limited liability company, as "KMR";

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El Paso Pipeline Partners, L.P., a Delaware limited partnership, as "EPB";

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Kinder Morgan G.P., Inc., a Delaware corporation and the general partner of KMP, as "KMGP";

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El Paso Pipeline GP Company, L.L.C., a Delaware limited liability company and the general partner of EPB, as "EPGP";

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the board of directors of KMI as the "KMI board";

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the board of directors KMGP as the "KMGP board";

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the board of directors of KMR, the delegate of KMGP, as the "KMR board";

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the special committee of the KMR board, both before and after the adoption of the formal resolutions forming and delegating authority to the special committee of the KMR board, as the "KMR special committee";

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the conflicts and audit committee of the KMGP board, both before and after the adoption of the formal resolutions forming and delegating authority to the conflicts and audit committee of the KMGP board, as the "KMGP conflicts committee";

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P Merger Sub LLC, a Delaware limited liability company and wholly owned subsidiary of KMI, as "P Merger Sub";

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the Class P common stock, par value $0.01 per share, of KMI as "KMI common stock";

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the common units representing limited partner interests of KMP as "KMP common units";

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the Agreement and Plan of Merger dated as of August 9, 2014, among KMP, KMI, KMGP, KMR and P Merger Sub, as the "merger agreement" or the "KMP merger agreement";

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the proposed merger pursuant to the KMP merger agreement whereby KMI will acquire directly or indirectly all of the outstanding KMP common units that KMI and its subsidiaries do not already own as the "merger" or the "KMP merger";

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the KMP unitholders (other than KMI and its affiliates) as the "unaffiliated KMP unitholders";

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the Agreement and Plan of Merger dated as of August 9, 2014, among KMR, KMI and R Merger Sub LLC, as the "KMR merger agreement";

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the proposed merger pursuant to the KMR merger agreement whereby KMI will acquire directly or indirectly all of the outstanding KMR listed shares that KMI and its subsidiaries do not already own as the "KMR merger";

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the KMR shareholders (other than KMI and its affiliates) as the "unaffiliated KMR shareholders";



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the Agreement and Plan of Merger dated as of August 9, 2014, among EPB, KMI, EPGP and E Merger Sub LLC, as the "EPB merger agreement";



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the proposed merger pursuant to the EPB merger agreement whereby KMI will acquire directly or indirectly all of the outstanding EPB common units that KMI and its subsidiaries do not already own as the "EPB merger";



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the EPB unitholders (other than EPGP and its affiliates) as the "unaffiliated EPB unitholders";



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the conflicts committee of the EPGP board, both before and after the adoption of the formal resolutions forming and delegating authority to the conflicts committee of the EPGB board, as the "EPGP conflicts committee";



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the KMP merger, the KMR merger, the EPB merger and the other transactions contemplated by the KMP merger agreement, the KMR merger agreement and the EPB merger agreement, collectively, as the "Transactions"; and



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the Support Agreement, dated as of August 9, 2014, among EPB, EPGP, KMP, KMGP, KMR and certain KMI stockholders, as the "support agreement."

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The Transactions.  The KMP merger is part of a larger series of mergers involving KMI and its three principal subsidiaries, KMP, KMR and EPB. Each merger is contingent on the other two mergers, and at the conclusion of the mergers, KMI will have acquired directly or indirectly all of the outstanding equity interests in KMP, KMR and EPB that KMI and its subsidiaries do not already own.

As part of the Transactions, KMI will hold a special meeting of KMI stockholders, which is referred to as the "KMI special meeting," at which KMI stockholders will be asked to approve an amendment to its certificate of incorporation to increase the number of authorized shares of KMI common stock and to approve the issuance of KMI common stock in the Transactions. In connection with the merger agreements, Richard D. Kinder, Chairman and Chief Executive Officer of KMI, KMGP, KMR and EPGP, and a limited partnership controlled by him have entered into the support agreement whereby they agree to vote all of the shares of KMI common stock owned by them in favor of the three proposals to be voted on at the KMI special meeting.

To finance the cash portion of the merger consideration for the KMP and EPB mergers, KMI has entered into a commitment letter with Barclays Bank PLC, which is referred to as "Barclays Bank," pursuant to which, subject to the terms and conditions set forth in the commitment letter, Barclays Bank has committed to provide to KMI up to a $5.0 billion senior unsecured 364-day term loan facility, which is referred to as the "bridge facility."

See "Special Factors—Effects of the Transactions" beginning on page 26 and "Description of the Debt Financing for the Transactions" beginning on page 146.

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The Parties to the Merger.  KMI is a Delaware corporation with its common stock traded on the NYSE under the symbol "KMI." KMI owns the general partner interests of, and significant limited partner interests in, KMP and EPB, and significant limited liability company interests in KMR (including all of KMR's voting shares, which are not publicly traded). See "—Relationship of the Parties to the Transactions" below.

KMP is a Delaware limited partnership with its common units traded on the NYSE under the symbol "KMP." KMP is one of the largest publicly-traded pipeline limited partnerships in the United States in terms of market capitalization. KMGP is KMP's general partner and has delegated to KMR, subject to limited exceptions, all of its rights and powers to manage and control the business and affairs of KMP and its operating limited partnerships.

P Merger Sub is a wholly owned subsidiary of KMI that was formed solely in contemplation of the KMP merger.

See "The Parties to the Merger" beginning on page 116.

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The Merger.  KMI, P Merger Sub, KMP, KMGP and KMR have entered into the KMP merger agreement. Subject to the terms and conditions of the KMP merger agreement and in accordance with Delaware law, at the effective time of the KMP merger, KMI will acquire directly or indirectly all of the publicly held KMP common units through the merger of P Merger Sub, a wholly owned subsidiary of KMI, with and into KMP, with KMP as the surviving entity. Upon completion of the KMP merger, KMI will acquire all the outstanding interests in KMP that KMI or its subsidiaries do not already own, and the KMP common units will cease to be publicly traded.

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Relationship of the Parties to the Transactions.  KMI conducts most of its business through KMP and EPB. For 2013, distributions from KMP and EPB represented approximately 87% of the sum of total cash generated by (i) distributions payable to KMI by these two partnerships (on a declared basis) and (ii) distributable cash generated by assets KMI owns and its share of cash generated by its joint venture investments.

KMI directly and indirectly owns approximately 43 million units of KMP. These units, which consist of approximately 22 million common units, 5 million Class B units and 16 million i-units (corresponding to the number of KMR shares owned by KMI), represent approximately 10% of the total outstanding limited partner interests of KMP. KMI also indirectly owns all of the common stock of KMGP, the general partner of KMP, which owns an effective 2% interest in KMP and its operating partnerships and the right to receive incentive distributions from KMP pursuant to KMP's partnership agreement. Together, these limited partner and general partner interests represent approximately 12% of KMP's total equity interests and an approximate 50% economic interest in KMP, as a result of the incentive distributions.

KMGP has delegated to KMR, subject to limited exceptions, all of KMGP's rights and power to manage the business and affairs of KMP and its operating limited partnerships. KMR owns all of KMP's i-units. KMI directly or indirectly owns approximately 16 million KMR listed shares, representing approximately 13% of KMR's outstanding shares, and KMGP owns all of KMR's voting shares.

KMI indirectly owns all of the membership interests in EPGP, the general partner of EPB, as well as approximately 40% of the outstanding common units of EPB and all of EPB's incentive distribution rights.

Certain executive officers and directors of KMI are also executive officers and directors of KMGP, KMR and EPGP. Richard D. Kinder and Steven J. Kean serve as members of the boards of directors of all four companies.

See "Special Factors—Relationship of the Parties to the Transactions" beginning on page 48.

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Merger Consideration.  At the effective time of the KMP merger, each common unit of KMP issued and outstanding (excluding common units owned by KMGP, KMR or KMI or any of its other subsidiaries, which shall remain outstanding) will be converted into the right to receive, at the election of the holder, one of the following:

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$10.77 in cash without interest and 2.1931 shares of KMI common stock, which is referred to as the "mixed consideration";

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$91.72 in cash without interest, which is referred to as the "cash consideration"; or

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2.4849 shares of KMI common stock, which is referred to as the "stock consideration."

Any election by a holder to receive the cash consideration or the stock consideration will be subject to proration to ensure that the aggregate amount of cash paid and the aggregate number of shares of

KMI common stock issued in the KMP merger is the same as would be paid and issued if each KMP common unit had been converted into the right to receive the mixed consideration. See "Special Factors—KMP Unitholders Making Elections—Proration and Adjustment Procedures" on page 100 for more information on the proration and adjustment procedures.

KMI will not issue any fractional shares of KMI common stock in the KMP merger. Instead, each holder of KMP common units who otherwise would have received a fractional share of KMI common stock will be entitled to receive, from the exchange agent appointed by KMI pursuant to the KMP merger agreement, a cash payment, without interest, in lieu of such fractional share representing such holder's proportionate interest, if any, in the proceeds from the sale by the exchange agent (reduced by reasonable and customary fees of the exchange agent attributable to such sale) in one or more transactions of a number of shares of KMI common stock equal to the aggregate amount of fractional shares of KMI common stock otherwise issuable.

Because the exchange ratios were fixed at the time the KMP merger agreement was executed and because the market value of KMI common stock and KMP common units will fluctuate during the pendency of the Transactions, KMP unitholders cannot be sure of the value of the KMP merger consideration they elect to receive relative to the value of the KMP common units that they are exchanging. See "Risk Factors—Risk Factors Relating to the Merger." KMP unitholders are urged to obtain current market quotations for the KMI common stock when they make their elections.

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Interests of Certain Persons in the Transactions.  In considering the recommendations of the KMGP conflicts committee, the KMR board and the KMGP board, KMP unitholders should be aware that some of the executive officers and directors of KMR and KMGP have interests in the Transactions that may differ from, or may be in addition to, the interests of KMP unitholders generally. These interests include:

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KMR and KMGP have the same directors and executive officers.

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Certain members of the KMR and KMGP boards are members of the KMI board and many executive officers of KMR and KMGP are executive officers of KMI.

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The directors and officers of KMR and KMGP are entitled to continued indemnification and insurance coverage under the KMP merger agreement, and in the case of the non-employee directors, indemnification agreements.

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The non-employee directors on the KMR and KMGP boards, who serve as the members of the KMGP conflicts committee, have been offered the opportunity to become members of the KMI board after the KMP merger.

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All directors and certain executive officers of KMR and KMGP beneficially own units or shares of one or more of the parties to the Transactions, and these directors and executive officers will receive the applicable merger consideration upon completion of the Transactions.

For more detail about these interests, see "Special Factors—Interests of Certain Persons in the Transactions" beginning on page 95.

The KMGP conflicts committee, the KMR board and the KMGP board were aware of these interests and considered them, among other matters, prior to providing their respective approvals and recommendations with respect to the KMP merger agreement.

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KMP Special Meeting; Unitholders Entitled to Vote; Vote Required.  The KMP special meeting will be held on [          ], [          ], 2014 at [          ] a.m. local time, at the Kinder Morgan Building, 1001 Louisiana Street, Houston, Texas 77002. The record date for the KMP special meeting is [                        ], 2014. Only holders of KMP units at the close of business on the record date are entitled to notice of, and to vote at, the KMP special meeting or any adjournment or postponement thereof. Approval of the KMP merger agreement requires the affirmative vote of a majority of the

outstanding KMP units. Pursuant to the terms of the KMP partnership agreement, KMGP may adjourn the special meeting without limited partner action as described under "The KMP Special Meeting—Adjournments." Adjournment of the KMP special meeting by KMP limited partner action requires (i) if a quorum does not exist, the affirmative vote of the holders of a majority of the KMP units present in person or by proxy at the KMP special meeting or (ii) if a quorum does exist, the affirmative vote of a majority of the outstanding KMP units. See "The KMP Special Meeting" beginning on page 117.

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Unit Ownership of KMI and of KMGP's and KMR's Directors and Executive Officers.  As of [          ], 2014, the record date, KMI and its subsidiaries (other than KMR) held and were entitled to vote, in the aggregate, KMP common units and Class B units, and KMR shares corresponding to i-units, representing approximately [          ]% of the outstanding units of KMP, and the directors and executive officers of KMGP and KMR held and were entitled to vote, in the aggregate, KMP common units and KMR shares corresponding to i-units representing approximately [          ]% of the outstanding units of KMP. KMI has agreed in the KMP merger agreement that, subject to limited exceptions, it and its subsidiaries would vote their KMP units and KMR shares FOR the KMP merger agreement proposal, and we believe that KMI and its subsidiaries intend to vote their KMP units and KMR shares FOR the adjournment proposal. We believe KMGP's and KMR's directors and executive officers intend to vote all of their units and shares FOR the merger agreement proposal and FOR the adjournment proposal. KMR will submit the KMP merger proposal and the KMP adjournment proposal to a vote of KMR shareholders to determine how KMR will vote the KMP i-units at the KMP special meeting. See "The KMP Special Meeting—Unit Ownership of and Voting by KMI and KMGP's and KMR's Directors and Executive Officers" beginning on page 118.

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Recommendation of the KMGP Conflicts Committee, the KMR Board and the KMGP Board and Their Reasons for the Merger.  The KMGP conflicts committee, the KMR board and the KMGP board considered the benefits of the KMP merger agreement, the KMP merger and the related transactions as well as the associated risks and (i) determined that the KMP merger is fair and reasonable to, and in the best interests of, KMP, after determining that the KMP merger is fair and reasonable to, and in the best interests of, the unaffiliated KMP unitholders and (ii) approved the KMP merger, the KMP merger agreement and the execution, delivery and performance of the KMP merger agreement. The KMGP conflicts committee's determination that the KMP merger is fair and reasonable to KMP constitutes "Special Approval," as such term is defined by the KMP partnership agreement. For a discussion of the many factors considered by the KMGP conflicts committee, the KMGP board and the KMR board in making their determination and approval, please read "Special Factors—Recommendation of the KMGP Conflicts Committee, the KMR Board and the KMGP Board and Their Reasons for the Merger."

The KMGP conflicts committee, the KMR board and the KMGP board each recommend that KMP unitholders vote FOR the approval of the KMP merger agreement and FOR the adjournment of the KMP special meeting if necessary to solicit additional proxies if there are not sufficient votes to approve the KMP merger agreement at the time of the KMP special meeting.

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Opinion of Jefferies LLC.  The KMGP conflicts committee's financial advisor, Jefferies LLC, which is referred to as "Jefferies," has conducted financial analyses and delivered a written opinion to the KMGP conflicts committee to the effect that, as of the date of the KMP merger agreement and based upon and subject to the assumptions made, procedures followed, factors considered and limitations upon the review undertaken by Jefferies as set forth in its opinion, from a financial point of view, the merger consideration is fair to the KMP unitholders (other than KMI and its affiliates (other than KMP)).

The full text of Jefferies' written opinion, dated as of August 9, 2014, is attached hereto as Annex B and is incorporated by reference herein in its entirety. Jefferies' written opinion sets forth, among other things, the assumptions made, procedures followed, factors considered and limitations upon the

review undertaken by Jefferies in rendering its opinion. You are encouraged to read the opinion carefully and in its entirety. This description of the opinion is qualified in its entirety by reference to the full text of the opinion. Jefferies written opinion is addressed to the KMGP conflicts committee, is directed only to the merger consideration and does not constitute a recommendation to any KMP unitholder as to how such unitholder should vote with respect to the merger or any other matter. See "Special Factors—Opinion of Jefferies LLC" beginning on page 61.

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Conditions to Completion of the Merger.  KMI and KMP currently expect to complete the Transactions during the fourth quarter of 2014, subject to receipt of required unitholder, stockholder and regulatory approvals and the satisfaction or waiver of the other conditions to the KMP merger.

As more fully described in this proxy statement/prospectus and in the KMP merger agreement, each party's obligation to complete the KMP merger depends on a number of conditions being satisfied or, where legally permissible, waived, including the following:

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the KMP merger agreement must have been approved by the affirmative vote of a majority of the outstanding KMP units;



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the adoption of the amendment to KMI's certificate of incorporation, which is referred to as the "charter amendment proposal," to increase the number of authorized shares of KMI common stock must have been approved by the affirmative vote of a majority of the outstanding shares of KMI common stock;



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the issuance of shares of KMI common stock pursuant to the KMP merger, the EPB merger and the KMR merger, which is referred to as the "stock issuance proposal," must have been approved by the affirmative vote of a majority of the shares of KMI common stock present at the KMI special meeting;



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any waiting period applicable to the transactions contemplated by the KMP merger agreement under the HSR Act must have been terminated or must have expired (the Antitrust Division and the FTC granted early termination of the applicable waiting period under the HSR Act on August 22, 2014);



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no law, injunction, judgment or ruling enacted, promulgated, issued, entered, amended or enforced by any governmental authority (each a "restraint") shall be in effect enjoining, restraining, preventing or prohibiting consummation of the transactions contemplated by the KMP merger agreement or making the consummation of the transactions contemplated by the KMP merger agreement illegal;



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the registration statement of which this proxy statement/prospectus forms a part must have been declared effective under the Securities Act and must not be subject to any stop order suspending the effectiveness of the registration statement or proceedings initiated or threatened by the SEC for that purpose;



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the KMI common stock deliverable to the KMP unitholders as contemplated by the KMP merger agreement must have been approved for listing on the NYSE, subject to official notice of issuance;



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all of the conditions set forth in the KMR merger agreement and the EPB merger agreement must have been satisfied or irrevocably waived (if permitted under applicable law) in writing by the applicable party thereto (other than (x) those conditions that by their terms are to be satisfied by actions taken at the closing under the KMR merger agreement and the EPB merger agreement, as applicable, and (y) this same condition set forth in each of the KMR merger agreement and the EPB merger agreement) and the parties thereto must be ready, willing and able to consummate the KMR merger and the EPB merger, and the KMR merger and the EPB merger must be consummated substantially concurrently with the KMP merger such that the KMR merger will be consummated first, followed by the KMP merger and then the EPB merger; and

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KMI and KMP must have received an opinion of Bracewell & Giuliani LLP that, for U.S. federal income tax purposes, at least 90% of the gross income of KMP for the four most recent complete calendar quarters ending before the closing for which the necessary financial information is available is from sources treated as "qualifying income" within the meaning of Section 7704(d) of the Internal Revenue Code of 1986, as amended, which is referred to as the "Code."

The obligations of KMI and P Merger Sub to effect the KMP merger are subject to the satisfaction or waiver of the following additional conditions:

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the representations and warranties of KMP, KMR and KMGP being true and correct both when made and at and as of the date of the closing, subject to certain standards, including materiality and material adverse effect qualifications, as described under "Proposal 1: The Merger Agreement—Conditions to Completion of the Merger" beginning on page 123; and



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KMP, KMR and KMGP having performed in all material respects all obligations required to be performed by each of them under the KMP merger agreement.

The obligation of KMP to effect the KMP merger is subject to the satisfaction or waiver of the following additional conditions:

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the representations and warranties of KMI being true and correct both when made and at and as of the date of the closing, subject to certain standards, including materiality and material adverse effect qualifications, as described under "Proposal 1: The Merger Agreement—Conditions to Completion of the Merger" beginning on page 123, and receipt by KMP of an officer's certificate signed on behalf of KMI by an executive officer of KMI to that effect; and



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KMI and P Merger Sub having performed in all material respects all obligations required to be performed by each of them under the KMP merger agreement and receipt by KMP of an officer's certificate signed on behalf of KMI by an executive officer of KMI to that effect.

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Changes in Board or Committee Recommendations.  The KMP merger agreement contains provisions regarding the applicable board of directors' or committee's change in its recommendation with respect to the KMP merger agreement.

KMP Adverse Recommendation Change.    The KMP merger agreement provides that KMP will not, through the KMR board, the KMGP conflicts committee or the KMGP board, make a KMP adverse recommendation change (as defined under "Proposal 1: The Merger Agreement—KMGP Recommendation and KMP Adverse Recommendation Change").

Notwithstanding the foregoing or any other term in the KMP merger agreement to the contrary, subject to certain conditions (more fully described in "Proposal 1: The Merger Agreement—KMGP Recommendation and KMP Adverse Recommendation Change"), the KMR board, the KMGP conflicts committee or the KMGP board may, at any time prior to obtaining the approval of the KMR merger agreement by the KMP unitholders, make a KMR adverse recommendation change in response to a KMP intervening event or a KMP superior proposal, if any of them makes a good faith determination that the failure to change its recommendation would not be in the best interests of KMP, after determining that it would not be in the best interests of the unaffiliated KMP unitholders.

See "Proposal 1: The Merger Agreement—KMGP Recommendation and KMP Adverse Recommendation Change" beginning on page 126 for more detailed information.

KMI Adverse Recommendation Change.    The KMP merger agreement provides that KMI will not, through the KMI board of directors, make a KMI adverse recommendation change (as defined under "Proposal 1: The Merger Agreement—KMI Recommendation and KMI Adverse Recommendation Change").

Notwithstanding the foregoing or any other term in the KMP merger agreement to the contrary, subject to certain conditions (more fully described in "Proposal 1: The Merger Agreement—KMI Recommendation and KMI Adverse Recommendation Change"), the KMI board may, at any time prior to KMI's stockholders approving the stock issuance proposal and charter amendment proposal, make a KMI adverse recommendation change in response to a KMI intervening event or a KMI superior proposal, if the KMI board makes a good faith determination that the failure to change its recommendation would be inconsistent with its fiduciary duties to KMI stockholders under applicable law.

See "Proposal 1: The Merger Agreement—KMI Recommendation and KMI Adverse Recommendation Change" beginning on page 128 for more detailed information.

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Risks Relating to the Merger and Ownership of KMI Common Stock.  KMP unitholders should consider carefully all the risk factors together with all of the other information included or incorporated by reference in this proxy statement/prospectus before deciding how to vote. Risks relating to the KMP merger and ownership of KMI common stock are described in the section titled "Risk Factors" beginning on page 105. Some of these risks include, but are not limited to, those described below:

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Completion of the KMP merger is contingent upon completion of the KMR merger and the EPB merger, and vice versa. No merger will occur unless all three mergers occur.

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The KMP merger is subject to other substantial conditions and may not be consummated even if the required KMI stockholder and KMP unitholder approvals are obtained.

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Because the exchange ratios are fixed, KMP unitholders who will receive KMI common stock as part of the merger consideration cannot be sure of the market value of the KMI common stock they will receive relative to the value of the KMP common units they exchange.

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The tax liability of a KMP unitholder as a result of the KMP merger could be more than expected and could exceed the cash received by such unitholder in the KMP merger.

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The KMP merger agreement contains provisions that limit KMP's ability to pursue alternatives to the KMP merger and, in specified circumstances, could require KMP to pay a termination fee of $817 million to KMI.

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All directors and certain executive officers of KMGP and KMR have certain interests in the Transactions that are different from those of KMP unitholders generally.

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The KMI common stock to be received by KMP unitholders as a result of the KMP merger has different rights from KMP common units.

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The market price of the KMI common stock may be volatile, and KMI stockholders could lose a significant portion of their investments.

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Holders of KMI common stock may not receive the anticipated level of dividends under KMI's dividend policy or any dividends at all.

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Regulatory Approvals Required for the Merger.  The following is a summary of the material regulatory requirements for completion of the KMP merger. There can be no guarantee if and when any of the consents or approvals required for the KMP merger will be obtained or as to the conditions that such consents and approvals may contain.

Under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, which is referred to as the "HSR Act", and related rules, certain transactions, including the KMP merger, may not be completed until notifications have been given and information furnished to the Antitrust Division of the United States Department of Justice, which is referred to as the "Antitrust Division", and the United States Federal Trade Commission, which is referred to as the "FTC", and all statutory waiting period requirements under the HSR Act have been satisfied. On August 15, 2014, KMI and

KMP filed HSR Act Notification and Report Forms, which are referred to as the "HSR Forms," with the Antitrust Division and the FTC. The Antitrust Division and the FTC granted early termination of the applicable waiting period under the HSR Act on August 22, 2014.

At any time before or after the effective time of the KMP merger, the Antitrust Division or the FTC could take action under the antitrust laws, including seeking to rescind the KMP merger or to seek other remedies. In addition, U.S. state attorneys general could take action under the antitrust laws as they deem necessary or desirable in the public interest, including without limitation seeking to enjoin the completion of the KMP merger or permitting completion subject to regulatory concessions or conditions. Private parties may also seek to take legal action under the antitrust laws under some circumstances. There can be no assurance that a challenge to the KMP merger on antitrust grounds will not be made or, if such a challenge is made, that it would not be successful.

Under the Investment Canada Act, which is referred to as the "ICA," certain transactions involving the acquisition of Canadian businesses by non-Canadians may not be completed unless the transaction has been reviewed by the Investment Review Division of Industry Canada, which is referred to as the "IRD," and the Minister of Industry is satisfied, or has been deemed to be satisfied, that the investment is likely to be of "net benefit to Canada." The KMP merger may require review under the ICA. A non-Canadian proposing a transaction that is reviewable must make an application to the IRD setting out particulars of the proposed transaction. There is then an initial waiting period of up to 45 days, with a possible further extension of 30 days (further extensions are possible upon consent of the non-Canadian proponent and the Minister of Industry). If it is determined that the KMP merger is subject to review, KMI will submit its application in due course.

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Termination of the Merger Agreement.  KMI and KMP may terminate the KMP merger agreement at any time prior to the effective time of the KMP merger by mutual written consent authorized by the KMI board of directors and the KMGP conflicts committee.

In addition, either KMI or KMP may terminate the KMP merger agreement at any time prior to the effective time by written notice to the other party if:

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the closing of the KMP merger has not occurred on or before May 11, 2015, subject to certain exceptions discussed in "Proposal 1: The Merger Agreement—Termination" beginning on page 134;



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any restraint is in effect and has become final and nonappealable that enjoins or prohibits the consummation of the transactions contemplated by the KMP merger agreement or makes the consummation of the transactions contemplated by the KMP merger agreement illegal, subject to certain exceptions discussed in "Proposal 1: The Merger Agreement—Termination" beginning on page 134;



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the approval of the KMP merger agreement by the KMP unitholders is not obtained at the KMP special meeting;



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the approval of the stock issuance proposal and the charter amendment proposal by the KMI stockholders is not obtained at the KMI special meeting; or



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either the EPB merger agreement or the KMR merger agreement is terminated in accordance with its terms.

KMI also may terminate the KMP merger agreement if a KMP adverse recommendation change occurs or KMP, KMR or KMGP materially breaches or fails to perform any of its representations, warranties, covenants or agreements contained in the KMP merger agreement such that certain closing conditions would not be satisfied, or if such breach or failure is capable of being cured, such breach or failure has not been cured within 30 days following delivery of written notice by KMI and KMI is not then in any material breach.

KMP also may terminate the KMP merger agreement if a KMI adverse recommendation change occurs or KMI materially breaches or fails to perform any of its representations, warranties, covenants or agreements contained in the KMP merger agreement such that certain closing conditions would not be satisfied, or if such breach or failure is capable of being cured, such breach or failure has not been cured within 30 days following delivery of written notice by KMP and none of KMGP, KMR or KMP is then in any material breach.

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Expenses and Termination Fees Relating to the Merger.  Generally, all fees and expenses incurred in connection with the Transactions will be the obligation of the respective party incurring such fees and expenses.

The KMP merger agreement provides that KMP is required to pay a termination fee of $817 million to KMI in cash, if the KMP merger agreement is terminated by:

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KMI, as a result of the KMGP conflicts committee, KMR board or KMGP board having effected a KMP adverse recommendation change due to a superior proposal; or



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KMP or KMI, as a result of the KMP unitholders not approving the KMP merger agreement at a meeting of the KMP unitholders or any adjournment or postponement of such meeting where a KMP adverse recommendation change due to a superior proposal has occurred.

The KMP merger agreement provides that KMI is required to pay a termination fee of $817 million to KMP, if the KMP merger agreement is terminated by:

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KMP, as a result of the KMI board having effected a KMI adverse recommendation change due to a superior proposal; or



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KMP or KMI, as a result of the KMI stockholders not approving the stock issuance proposal and charter amendment proposal at a meeting of the stockholders of KMI or any adjournment or postponement of such meeting where a KMI adverse recommendation change due to a superior proposal has occurred.

In the event KMI is required to pay KMP a termination fee, such termination fee will be payable through an irrevocable waiver of a portion of KMGP's incentive distributions over a period of eight calendar quarters.

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Comparison of Rights of KMI Stockholders and KMP Unitholders.  A limited partnership is inherently different from a corporation. Ownership interests in a limited partnership are therefore fundamentally different from ownership interests in a corporation. KMP unitholders will own KMI common stock following the completion of the KMP merger, and their rights associated with the KMI common stock will be governed by KMI's certificate of incorporation and bylaws and Delaware corporation law, which differ in a number of respects from the KMP partnership agreement and Delaware limited partnership law. See "Comparison of Rights of KMI Stockholders and KMP Unitholders" beginning on page 161.

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No Solicitation of Competing Proposals.  

KMP

The KMP merger agreement contains detailed provisions prohibiting KMP, KMR and KMGP from seeking a KMP alternative proposal to the KMP merger. Under these "no solicitation" provisions, KMP, KMR and KMGP have agreed that they will not, and will cause their respective subsidiaries and use reasonable best efforts to cause their and their subsidiaries' respective directors, officers, employees, investment bankers, financial advisors, attorneys, accountants, agents and other

representatives (collectively, their "representatives") not to, directly or indirectly, except as permitted by the KMP merger agreement:

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solicit, initiate, knowingly facilitate, knowingly encourage (including by way of furnishing confidential information) or knowingly induce or take any other action intended to lead to any inquiries or any proposals that constitute the submission of an KMP alternative proposal; or



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enter into any confidentiality agreement, merger agreement, letter of intent, agreement in principle, unit purchase agreement, asset purchase agreement or unit exchange agreement, option agreement or other similar agreement relating to a KMP alternative proposal.

KMP, KMR and KMGP have agreed that they will not, and will cause their respective subsidiaries and use reasonable best efforts to cause their respective representatives to immediately cease and cause to be terminated any discussions or negotiations with any person with respect to an alternative proposal, request the return or destruction of all confidential information previously provided to such parties and prohibit any access by any confidential information relating to a possible KMP alternative proposal.

Notwithstanding the restrictions above, the KMP merger agreement provides that, under specified circumstances at any time prior to obtaining the approval of KMP's unitholders of the KMP merger agreement, if KMP has received a written KMP alternative proposal that the KMGP conflicts committee believes is bona fide and the KMGP conflicts committee, after consultation with its financial advisors and outside legal counsel, determines in good faith that such KMP alternative proposal constitutes or could reasonably be expected to lead to or result in a KMP superior proposal and such KMP alternative proposal does not result from a material breach of the non-solicitation provisions in the KMP merger agreement, then KMP, KMGP and KMR may:

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furnish information with respect to KMP and its subsidiaries to any third party making such KMP alternative proposal; and



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participate in discussions or negotiations regarding such KMP alternative proposal.

KMP, KMGP and KMR also have agreed in the KMP merger agreement that they (i) will promptly, and in any event within 24 hours after receipt, advise KMI, orally and in writing, if any proposal, offer or inquiry is received by, any information is requested (other than requests for information in the ordinary course of business) from, or any discussions or negotiations are sought to be initiated with them in respect of any KMP alternative proposal and indicate the identity of the person making any such KMP alternative proposal, offer or inquiry and (ii) will provide KMI the material terms of any such KMP alternative proposal, request or inquiry and the terms and conditions thereof (including providing KMI with copies of any written materials received from or on behalf of such person making such proposal, offer or inquiry). In addition, KMP, KMGP and KMR have agreed to promptly keep KMI reasonably informed of all material developments affecting the status and terms of any such proposals, offers, inquiries or requests (and promptly, in any event within 24 hours, provide KMI with copies of any additional written materials received by KMP, KMGP or KMR or that KMP, KMGP or KMR has delivered to any third party making an KMP alternative proposal that relate to such proposals, offers, inquiries or requests) and the status of any such discussions or negotiations.

KMI

The KMP merger agreement contains detailed provisions prohibiting KMI from seeking a KMI alternative proposal to the KMP merger agreement. Under these "no solicitation" provisions, KMI has agreed that it will not, and it will cause its subsidiaries and use reasonable best efforts to cause

their respective representatives not to, directly or indirectly, except as permitted by the KMP merger agreement:

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solicit, initiate, knowingly facilitate, knowingly encourage (including by way of furnishing confidential information) or knowingly induce or take any other action intended to lead to any inquiries or any proposals that constitute the submission of a KMI alternative proposal; or



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enter into any confidentiality agreement, merger agreement, letter of intent, agreement in principle, unit purchase agreement, asset purchase agreement or unit exchange agreement, option agreement or other similar agreement relating to a KMI alternative proposal.

KMI has agreed that it will, and will cause its subsidiaries and use reasonable best efforts to cause their respective representatives to, immediately cease and cause to be terminated any discussions or negotiations with any person with respect to a KMI alternative proposal, request the return or destruction of all confidential information previously provided to such parties and prohibit any access to any confidential information relating to a possible KMI alternative proposal.

Notwithstanding the foregoing restrictions, the KMP merger agreement provides that, under specified circumstances at any time prior to obtaining the approval of KMI's stockholders of the stock issuance proposal and the charter amendment proposal, if KMI has received a written KMI alternative proposal that the KMI board believes is bona fide and the KMI board, after consultation with its financial advisors and outside legal counsel, determines in good faith that such KMI alternative proposal constitutes or could reasonably be expected to lead to or result in a KMI superior proposal and such KMI alternative proposal does not result from a material breach of the non-solicitation provisions in the KMP merger agreement, then KMI may:

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furnish information with respect to KMI and its respective subsidiaries, as applicable, to any third party making such KMI alternative proposal; and



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participate in discussions or negotiations regarding such KMI alternative proposal.

KMI also has agreed in the KMP merger agreement that it (i) will promptly, and in any event within 24 hours after receipt, advise KMP, KMGP and KMR, orally and in writing, if any proposal offer or inquiry is received by, any information is requested (other than requests for information in the ordinary course of business) from, or any discussions or negotiations are sought to be initiated with it in respect of any KMI alternative proposal and indicate the identity of the person making any such alternative proposal, offer or inquiry and (ii) will provide KMP, KMGP and KMR the material terms of any such alternative proposal, request or inquiry and the terms and conditions thereof (including providing KMI with copies of any written materials received from or on behalf of such person making such proposal, offer or inquiry). In addition, KMI has agreed to promptly keep KMP, KMGP and KMR reasonably informed of all material developments affecting the status and terms of any such proposals, offers, inquiries or requests (and promptly, in any event within 24 hours, provide KMP, KMGP and KMR with copies of any additional written materials received by KMI or that KMI has delivered to any third party making a KMI alternative proposal that relate to such proposals, offers, inquiries or requests) and the status of any such discussions or negotiations.

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No Appraisal Rights.  KMP unitholders will not have appraisal rights in connection with the KMP merger under Delaware law or pursuant to the KMP partnership agreement or KMP merger agreement. See "Special Factors—No Appraisal Rights" on page 99.

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Material U.S. Federal Income Tax Consequences of the Merger.  The receipt of KMI common stock, cash or a combination of KMI common stock and cash in exchange for KMP common units pursuant to the KMP merger will be a taxable transaction for U.S. federal income tax purposes to U.S. holders (as defined in "Material U.S. Federal Income Tax Consequences").

A U.S. holder who receives KMI common stock, cash or a combination of KMI common stock and cash in exchange for KMP common units pursuant to the KMP merger will recognize gain or loss in an amount equal to the difference between:

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the sum of (i) the amount of any cash received, (ii) the fair market value of any KMI common stock received, and (iii) such U.S. holder's share of KMP's nonrecourse liabilities immediately prior to the KMP merger; and



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such U.S. holder's adjusted tax basis in the KMP common units exchanged therefor (which includes such U.S. holder's share of KMP's nonrecourse liabilities immediately prior to the KMP merger).

Gain or loss recognized by a U.S. holder will generally be taxable as capital gain or loss. However, a portion of this gain or loss, which portion is likely to be substantial, will be separately computed and taxed as ordinary income or loss under Section 751 of the Code to the extent attributable to assets giving rise to depreciation recapture or other "unrealized receivables" or to "inventory items" owned by KMP and its subsidiaries. Passive losses that were not deductible by a U.S. holder in prior taxable periods because they exceeded a U.S. holder's share of KMP's income may become available to offset a portion of the gain recognized by such U.S. holder.

The U.S. federal income tax consequences of the KMP merger to a KMP unitholder will depend on such unitholder's own personal tax situation. Accordingly, we strongly urge you to consult your tax advisor for a full understanding of the particular tax consequences of the KMP merger to you.

Please read "Material U.S. Federal Income Tax Consequences" beginning on page 142 for a more complete discussion of certain U.S. federal income tax consequences of the KMP merger.

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Accounting Treatment of the Merger.  The KMP merger will be accounted for in accordance with Financial Accounting Standards Board Accounting Standards Codification 810, Consolidation—Overall—Changes in a Parent's Ownership Interest in a Subsidiary. As KMI controls KMP and will continue to control KMP after the KMP merger, the changes in KMI's ownership interest in KMP will be accounted for as an equity transaction and no gain or loss will be recognized in KMI's consolidated statements of income resulting from the KMP merger.

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Selected Historical Consolidated Financial Data of KMI.  The following selected historical consolidated financial data as of and for each of the years ended December 31, 2013, 2012, 2011, 2010 and 2009 are derived from KMI's audited consolidated financial statements. The selected historical consolidated financial data as of and for each of the six month periods ended June 30, 2014 and 2013 are derived from KMI's unaudited consolidated financial statements. You should read the following data in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operations" and the consolidated financial statements and the related notes thereto set forth in KMI's Annual Report on Form 10-K for the year ended December 31, 2013 and KMI's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2014 incorporated by reference into this proxy statement/prospectus. See "Where You Can Find More Information."

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Selected Historical Consolidated Financial Data of KMP.  The following selected historical consolidated financial data as of and for each of the years ended December 31, 2013, 2012, 2011, 2010 and 2009 are derived from KMP's audited consolidated financial statements. The selected historical consolidated financial data as of and for each of the six month periods ended June 30, 2014 and 2013 are derived from KMP's unaudited consolidated financial statements. You should read the

following data in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operations" and the consolidated financial statements and the related notes thereto set forth in KMP's Annual Report on Form 10-K for the year ended December 31, 2013 and KMP's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2014 incorporated by reference into this proxy statement/prospectus. See "Where You Can Find More Information."

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Selected Unaudited Pro Forma Condensed Combined Financial Information.  The following table sets forth selected unaudited pro forma condensed combined financial information for KMI after giving effect to the Transactions. The selected unaudited pro forma condensed combined financial information is derived from the unaudited pro forma condensed combined financial statements included in this proxy statement/prospectus. For a complete discussion of the pro forma adjustments underlying the amounts in the table below, please read the section titled "Unaudited Pro Forma Condensed Combined Financial Statements" beginning on page 187.

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Unaudited Comparative Per Share/Unit Information.  The following table sets forth: (a) certain historical per share information of KMI; (b) certain historical per unit information of KMP; and (c) unaudited pro forma combined and equivalent pro forma combined per share information after giving effect to the Transactions.

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Comparative Stock and Unit Prices; Comparative Dividends and Distributions.  KMI common stock is listed on the NYSE under the ticker symbol "KMI." KMP common units are listed on the NYSE under the ticker symbol "KMP." The table below sets forth, for the calendar quarters indicated, the high and low sale prices per share of KMI common stock and per KMP common unit, respectively, on the NYSE. The table also shows the amount of per share cash dividends and per unit cash distributions declared on KMI common stock and KMP common units, respectively, for the calendar quarters indicated.