UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of report (date of earliest event reported): June 25, 2015

ENERGIZER HOLDINGS, INC.

(EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

533 Maryville University Drive

St. Louis, Missouri 63141

(Address of Principal Executive Offices, Including Zip Code)

(314) 985-2000

(Registrant’s Telephone Number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

On or about June 25, 2015, in connection with the implementation of the previously announced spin-off of the Household Products business of Energizer Holdings, Inc. (the “Company”) to the Company’s shareholders (the “Spin-Off”), we entered into certain agreements with Energizer SpinCo, Inc. (“New Energizer”), our wholly-owned subsidiary that will hold the Household Products business, to (i) effect our legal and structural separation from New Energizer; (ii) govern the relationship between us and New Energizer up to and after the completion of the Spin-Off; and (iii) allocate between us and New Energizer various assets, liabilities and obligations, including, among other things, employee benefits, intellectual property and tax-related assets and liabilities.

Separation Agreement

On June 25, 2015, the Company entered into a Separation and Distribution Agreement with New Energizer (the “Separation Agreement”). The Separation Agreement sets forth certain agreements with New Energizer regarding the principal actions to be taken in connection with the Spin-Off. It also sets forth other agreements that will govern certain aspects of New Energizer’s relationship with the Company following the Spin-Off. The following description of the Separation Agreement is qualified in its entirety by reference to the full text of the Separation Agreement, which is filed as Exhibit 2.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Transfer of Assets and Assumption of Liabilities

The Separation Agreement identifies the assets to be transferred, the liabilities to be assumed and the contracts to be assigned to each of the Company and New Energizer as part of the Spin-Off, and provides for when and how these transfers, assumptions and assignments will occur. Certain of the necessary transfers, assumptions and assignments are being or have been accomplished through an internal reorganization of the Company. In the final step of the internal reorganization, New Energizer will transfer approximately $1 billion in cash to the Company in connection with the Company’s contribution of certain assets (described below) to New Energizer immediately prior to the completion of the Spin-Off, which the Company will use to repay existing third-party debt. In particular, the Separation Agreement provides that, among other things, subject to the terms and conditions contained therein:

The Separation Agreement contemplates that certain liabilities will be shared by the Company and New Energizer. These liabilities include (i) liabilities related to certain types of shareholder litigation related to the Spin-Off and not relating to the business of either New Energizer or the Company, (ii) liabilities relating to certain financing transactions consummated prior to the effective time of the distribution that do not specifically relate to either New Energizer or the Company, (iii) liabilities relating to the employment, service, termination of employment or termination of service of certain former Company employees located outside of the United States and whose employment was not specifically allocated to either the Household Products business or the Personal Care business, and certain benefit plans with respect to such employees, (iv) liabilities related to any untrue statement or omission or alleged untrue statement or omission of material fact in the Information Statement or in certain offering materials relating to the financing transactions consummated prior to the Spin-Off; and (v) liabilities related to certain litigation matters that do not primarily relate to the Household Products business or the Personal Care business.

Except as expressly set forth in the Separation Agreement or any ancillary agreement, neither the Company nor New Energizer will make any representation or warranty as to the assets, business or liabilities transferred, licensed or assumed as part of the Spin-Off, as to any approvals or notifications required in connection with the transfers, as to the value of or the freedom from any security interests of any of the assets transferred, as to the absence or presence of any defenses or right of setoff or freedom from counterclaim with respect to any claim or other asset of either the Company or New Energizer, or as to the legal sufficiency of any assignment, document or instrument delivered to convey title to any asset or thing of value to be transferred in connection with the Spin-Off or any other representations or warranties. Except as expressly set forth in the Separation Agreement or any ancillary agreement, all assets will be transferred on an “as is,” “where is” basis, and the respective transferees will bear the economic and legal risks that any conveyance will prove to be insufficient to vest in the transferee good and marketable title, free and clear of all security interests, that any necessary consents or governmental approvals are not obtained, or that any requirements of law, agreements, security interests, or judgments are not complied with.

The Separation Agreement provides that, subject to limited exceptions, in the event that the transfer or assignment of certain assets and liabilities to New Energizer or the Company, as applicable, does not occur prior to the Spin-Off, then until such assets or liabilities are able to be transferred or assigned, New Energizer or the Company, as applicable, will hold such assets on behalf and for the benefit of the other party and will pay, perform and discharge such liabilities, for which the other party will advance to New Energizer or the Company, or reimburse New Energizer or the Company, as applicable, for all commercially reasonable payments made in connection with the performance and discharge of such liabilities.

Intellectual Property License

Under the Separation Agreement, New Energizer will grant the Company a license to use certain information (such as technical, financial, employee and business information) and other intellectual property assets (such as tangible works of expression and copyrights therein, know-how, trade secrets and other similar rights and assets, software, advertising and promotional materials, rights of publicity and privacy, moral rights and other similar rights, but not rights in patents, trademarks, service marks or other indicia of origin) that New Energizer owns following the Spin-Off but that had been used or held for use in the Personal Care business prior to the Spin-Off. The license to these information and other intellectual property assets will be worldwide, fully paid-up and royalty-free. Subject to certain limited termination rights, including in the event of an uncured breach of a material term applicable to the licensed assets, the license grant to these information and other intellectual property assets will be perpetual and irrevocable.

The Company will also grant New Energizer a license to use certain information (such as technical, financial, employee or business information) and other intellectual property assets (such as tangible works of expression and copyrights therein, software, know-how, trade secrets and other similar rights and assets, advertising and promotional materials, rights of publicity and privacy, moral rights and other similar rights, but not rights in patents, trademarks, service marks or other indicia of origin) that the Company owns following the Spin-Off but that had been used or held for use in the Household Products business prior to the Spin-Off. The license to these information and other intellectual property assets will be worldwide, fully paid-up and royalty-free. Subject to certain limited termination rights, including in the event of an uncured breach of a material term applicable to the licensed assets, the license grant to these information and other intellectual property assets will also be perpetual and irrevocable.

Subsidiaries of the Company and New Energizer, during such time as they retain such subsidiary status, will have the right to exploit the licensed assets to the same extent as their respective parent companies.

The Distribution

The Separation Agreement will also govern the rights and obligations of the parties regarding the distribution following the completion of the Spin-Off. On the distribution date, assuming all of the conditions to the Spin-Off are satisfied, the Company will distribute to its shareholders that held Company common stock as of the close of business on June 16, 2015, the record date for the distribution, one share of New Energizer common stock for each share of Company common stock so held.

Conditions to the Distribution

The Separation Agreement provides that the distribution is subject to satisfaction (or waiver by the Company) of certain conditions, including, among other things, the completion of the internal reorganization, the receipt of an opinion of tax counsel, the completion of related financing transactions, and the other conditions set forth in the Separation Agreement. The Company will have the sole and absolute discretion to determine the terms of, and to determine whether to proceed with, the distribution and, to the extent that it determines to so proceed, to determine the record date for the distribution, the distribution date and the distribution ratio.

Claims

In general, each party to the Separation Agreement will assume liability for all claims, demands, proceedings and similar legal matters primarily relating to, arising out of or resulting from its own assets, business or its assumed or retained liabilities, as well as, following the effective time of the distribution, any such legal matters primarily relating to, arising out of or resulting from actions under the control of such party or its subsidiaries, and will indemnify the other party for any liability to the extent arising out of or resulting from such assumed or retained legal matters as described below under “—Indemnification.”

Releases

The Separation Agreement provides that New Energizer and its affiliates will release and discharge the Company and its affiliates from all liabilities retained or assumed by New Energizer and its affiliates as part of the Spin-Off, and from all liabilities existing or arising from acts and events occurring or failing to occur, and all conditions existing, at or before the effective time of the distribution, including all liabilities existing or arising in connection with the implementation of the Spin-Off and the distribution, except as expressly set forth in the Separation Agreement. The Company and its affiliates will release and discharge New Energizer and its affiliates from all liabilities retained or assumed by the Company and its affiliates as part of the Spin-Off, and from all liabilities existing or arising from acts and events occurring or failing to occur, and all conditions existing, at or before the effective time of the distribution, including all liabilities existing or arising in connection with the implementation of the Spin-Off and the distribution, except as expressly set forth in the Separation Agreement.

Among other exceptions, these releases will not extend to obligations or liabilities under any agreements between the parties that remain in effect following the Spin-Off, which agreements include, but are not limited to, the Separation Agreement, the Transition Services Agreement, the Tax Matters Agreement, the Employee Matters Agreement, the reciprocal Trademark License Agreements, the documents by which the internal reorganization is effected and the transfer documents in connection with the Spin-Off.

Indemnification

In the Separation Agreement, New Energizer agreed to indemnify, defend and hold harmless the Company, each of the Company’s affiliates and each of the Company and its affiliates’ respective former and current directors, officers and employees, from and against all liabilities relating to, arising out of or resulting from, directly or indirectly:

The Company agreed to indemnify, defend and hold harmless New Energizer, each of New Energizer’s affiliates and each of New Energizer and New Energizer’s affiliates’ respective former and current directors, officers and employees from and against all liabilities relating to, arising out of or resulting from, directly or indirectly:

Expenses

Except as expressly set forth in the Separation Agreement or in any ancillary agreement, all costs and expenses incurred in connection with the separation incurred prior to the distribution date and remaining unpaid as of the distribution date, or incurred after the distribution date, in each case including costs and expenses in connection with the separation, the Registration Statement, and the other related ancillary agreements, will be paid by the party incurring such fees or expenses (provided that certain costs and expenses in connection with obtaining third party consents for the assignment of certain agreements will be paid by the party to which such agreement is being assigned).

Termination

The Separation Agreement provides that it and all of the other agreements between the parties relating to the Spin-Off and distribution may be amended or terminated, and the Spin-Off and distribution may be amended, modified or abandoned, at any time prior to the effective time of the distribution in the sole discretion of the Company without the approval of any person, including New Energizer. In the event of a termination of the Separation Agreement, no party, nor any of its directors, officers, agents or employees, will have any liability of any kind to the other party or any other person. After the effective time of the distribution, the Separation Agreement may not be terminated except by an agreement in writing signed by both the Company and New Energizer.

Transition Services Agreement

On June 25, 2015, the Company and New Energizer entered into a Transition Services Agreement in connection with the Spin-Off pursuant to which the Company and New Energizer and their respective affiliates will provide each other, on an interim, transitional basis, various services, including, but not limited to, treasury administration,

employee benefits administration, information technology services, services related to the wind-down of business operations in certain countries outside the United States, non-exclusive distribution and importation services for their products in certain countries outside the United States, regulatory, general administrative services and other support services. The following description of the Transition Services Agreement is qualified in its entirety by reference to the full text of the Transition Services Agreement, which is filed as Exhibit 2.4 to this Current Report on Form 8-K and is incorporated by reference herein. These services will be provided at predetermined rates, generally based on the cost of the service plus an agreed-upon margin. The agreement also provides for the allocation of certain one-time costs related to the Spin-Off.

The services generally will commence on the distribution date and continue for up to two years following the distribution date. Subject to limited exceptions, the receiving party may terminate any particular service by giving prior written notice to the provider of such service and paying any applicable wind-down charges.

Tax Matters Agreement

On June 26, 2015, the Company and New Energizer entered into a Tax Matters Agreement that governs the parties’ respective rights, responsibilities and obligations with respect to tax matters, including responsibility for taxes, entitlement to refunds, allocation of tax attributes, preparation of tax returns, certain tax elections, control of tax contests, cooperation, and certain other tax matters. The following description of the Tax Matters Agreement is qualified in its entirety by reference to the full text of the Tax Matters Agreement, which is filed as Exhibit 2.2 to this Current Report on Form 8-K and is incorporated by reference herein.

Under the Tax Matters Agreement, the Company generally will be responsible for all U.S. federal and most state income taxes (and will be entitled to all related refunds of taxes) imposed on the Company and its subsidiaries (including New Energizer and its subsidiaries) with respect to taxable periods (or portions thereof) that end on or prior to the distribution date, except that New Energizer will be responsible for such taxes to the extent they result from any breach of any representation or covenant made by New Energizer in the Tax Matters Agreement or other Spin-Off-related agreements. New Energizer generally will be responsible for all federal and state income taxes (and will be entitled to all related refunds of taxes) imposed on New Energizer and its subsidiaries with respect to taxable periods (or portions thereof) that begin after the distribution date, and all foreign taxes and state income taxes imposed with respect to separate tax returns of subsidiaries of New Energizer for any taxable period, except that the Company is responsible for such taxes to the extent they result from any breach by the Company of any of its representations or covenants in the Tax Matters Agreement or other Spin-Off-related agreements.

The Tax Matters Agreement provides special rules that allocate tax liabilities in the event either (i) the distribution together with certain related transactions, or (ii) any internal separation transaction that is intended to so qualify, fails to qualify as a transaction that is generally tax-free for U.S. federal income tax purposes under Sections 368(a)(1)(D) and 355 of the Code (each, a “Separation Taxable Event”). Under the Tax Matters Agreement, the Company and New Energizer generally will be responsible for any taxes and related amounts imposed on either of the parties as a result of a Separation Taxable Event to the extent that such Separation Taxable Event is attributable to a breach of the relevant representations or covenants made by that party in the Tax Matters Agreement or an acquisition of such party’s equity securities or assets.

In addition, the Tax Matters Agreement will impose certain restrictions on New Energizer and its subsidiaries during the two-year period following the distribution that are intended to prevent a Separation Taxable Event. Specifically, during such period, except in specific circumstances, New Energizer and its subsidiaries are generally prohibited from: (i) ceasing to conduct the Household Products businesses, (ii) entering into certain transactions or series of transactions pursuant to which all or a portion of the shares of New Energizer common stock would be acquired or all or a portion of certain assets of New Energizer and its subsidiaries would be acquired, (iii) liquidating, merging or consolidating with any other person, (iv) issuing equity securities beyond certain thresholds, (iv) repurchasing New Energizer shares other than in certain open-market transactions, or (v) taking or failing to take any other action that would cause a Separation Taxable Event.

Under the Tax Matters Agreement, the Company generally will have the right to control any audits or other tax proceedings with respect to any Company consolidated federal income tax return, and any consolidated, combined or unitary state income tax returns for taxable periods (or portions thereof) that end on or prior to the distribution date, provided that New Energizer has specified participation rights with respect to any such audit or tax proceeding with respect to a Separation Taxable Event that could result in additional taxes for which New Energizer is liable under the Tax Matters Agreement.

Employee Matters Agreement

On June 25, 2015, the Company and New Energizer entered into an Employee Matters Agreement in connection with the Spin-Off to allocate liabilities and responsibilities relating to U.S. employment matters, U.S. employee compensation and benefits plans and programs, and other related matters. The Employee Matters Agreement governs certain compensation and employee benefit obligations with respect to the current and former employees of each company in the United States. The treatment of employment matters and benefit plans and programs maintained outside of the United States is generally subject to the provisions of the applicable local law, the documents and agreements entered into in connection with the internal reorganization and the Separation Agreement (except as specifically stated below). The following description of the Employee Matters Agreement is qualified in its entirety by reference to the full text of the Employee Matters Agreement, which is filed as Exhibit 2.3 to this Current Report on Form 8-K and is incorporated by reference herein.

The Employee Matters Agreement provides that, unless otherwise specified, the Company is responsible for liabilities associated with employees who will be employed by the Company following the Spin-Off (“Company Employees”) and former employees whose last employment was with the business remaining with the Company after the Spin-Off (“Company Former Employees”), and New Energizer is responsible for liabilities associated with employees who will be employed by New Energizer following the Spin-Off (“New Energizer Employees”) and former employees whose last employment was with New Energizer’s business (“New Energizer Former Employees”). Consistent with the foregoing, New Energizer is responsible for liabilities associated with bonus awards that become due to employees who will be employed by New Energizer following the Spin-Off (including the Company’s named executive officers).

In addition, the Employee Matters Agreement provides that each outstanding Company restricted stock equivalent award held by New Energizer Employees and New Energizer Former Employees following the Spin-Off (including the Company’s named executive officers) will be reissued and converted, at the time of the distribution, into a restricted stock equivalent award in respect of New Energizer common stock. Such awards held by Company Employees and Company Former Employees (including the Company’s named executive officers) will also be reissued, at the time of the distribution, into a restricted stock equivalent award in respect of Company common stock, with an adjustment in a manner to reflect the intrinsic value of such award. In order to preserve the aggregate value of such reissued and converted award immediately before and immediately after the distribution, the number of shares of New Energizer common stock (or Company common stock, if applicable in the conversion) subject to each reissued and converted award will be equal to the product of (x) the number of shares of Company common stock that would have been provided upon the settlement of the corresponding Company award, multiplied by (y) a fraction, the numerator of which is the volume weighted average price of Company common stock on the “regular-way” market during the five-trading-day period prior to the effective time of the distribution, and the denominator of which is the volume weighted average price of New Energizer common stock (or Company common stock, whichever is applicable in the conversion) during the five-trading-day period following the effective time of the distribution. Volume weighted average price will be the Bloomberg volume weighted average price function for the respective shares as reported by the Treasury department. Otherwise, the reissued and converted restricted stock equivalent awards will be subject to substantially the same terms, vesting conditions and other restrictions that applied to the original Company restricted stock equivalent award immediately before the Spin-Off; provided that any performance-based restricted stock equivalent awards that would otherwise vest in November 2016 based on achievement of certain performance-criteria will be converted to time-based vesting instead of performance-based vesting in the conversion. Any similar awards held by employees and former employees outside of the United States shall be treated in a manner similar to the foregoing.

Each non-employee director of the Company who is to be a member of the board of directors of either the Company or New Energizer after the Spin-Off (but not both) will be given the choice, prior to the Spin-Off, to have his or her restricted stock equivalent awards and units in the Company stock fund of the Company deferred compensation plan treated, effective as of the Spin-Off, as follows: (i) such awards or units will be reissued as or converted into awards or units, as applicable, relating to the common stock of the company of which he or she is a director following the Spin-Off and otherwise adjusted in accordance with the conversion methodology applicable to

employee awards described above, (ii) such awards or units will continue to relate to the number of shares of Company common stock subject to the award immediately prior to the Spin-Off, and in accordance with the distribution ratio applicable to shareholders generally, the director will be granted additional awards or units that relate to an equal number of shares of New Energizer common stock, or (iii) such awards or units will be reissued or converted such that half of the aggregate value of such awards or units (determined using the conversion methodology above) is reissued as or converted into awards or units related to Company common stock and the other half of the aggregate value of such awards or units is reissued or converted into awards or units related to New Energizer common stock. Each non-employee director of the Company who is to be a member of the board of directors of both the Company and New Energizer after the Spin-Off may elect, prior to the Spin-Off, alternatives (ii) or (iii) (but not (i)) with respect to his or her restricted stock equivalent awards and units in the Company stock fund of the Company deferred compensation plan. Except as described above, all awards and units reissued or converted as described above will be subject to substantially the same terms, vesting conditions and other restrictions that applied to the original Company awards or units immediately before the Spin-Off. Any such awards or units to be settled in or otherwise based on the value of New Energizer or Company common stock will be assumed and settled under the plans of the company for which the director serves as a director immediately following Spin-Off. Notwithstanding the foregoing, each non-employee director of the Company who is to be a member of the board of directors of both the Company and New Energizer shall have any awards or units denominated in Company common stock assumed and settled under the plans of the Company and shall have any awards or units denominated in New Energizer common stock assumed and settled under the plans of New Energizer following Spin-Off.

Company Employees will continue to participate in the Company’s defined benefit pension plan and defined contribution plan, as applicable. New Energizer will establish a defined benefit pension plan and a defined contribution plan effective on the Spin-Off. The Company will transfer from its defined benefit plan any assets and liabilities representing any benefits accrued by New Energizer Employees and New Energizer Former Employees to the New Energizer defined benefit plan. In addition, the Company will transfer from its defined contribution plan any assets and liabilities (including participant loans) representing any benefits accrued by New Energizer Employees and Former Employees to the New Energizer defined contribution plan. However, in no event shall New Energizer or any New Energizer benefit plan assume any assets or liabilities with respect to or otherwise be responsible for the American Safety Razor Company Salaried Employees’ Retirement Plan or the ASR Staunton Employees’ Retirement Plan.

In connection with the Spin-Off, New Energizer will establish an excess benefit plan, supplemental executive retirement plan, and a deferred compensation plan with terms substantially similar to the existing Company excess benefit, supplemental executive retirement, and deferred compensation plans. New Energizer will assume under such New Energizer plans any liabilities representing any benefits accrued by New Energizer Employees and New Energizer Former Employees under such Company plans.

New Energizer will also establish welfare benefit plans and employment practices that are no less favorable in the aggregate as those maintained by the Company for the New Energizer Employees and New Energizer Former Employees. The Company will retain all covered welfare benefit liabilities for New Energizer Employees and New Energizer Former Employees which occur on or before the Spin-Off. The Company will retain existing covered retiree welfare and COBRA liabilities for Company Employees and Company Former Employees after the Spin-Off, and New Energizer will assume retiree welfare and COBRA liabilities associated with New Energizer Employees and New Energizer Former Employees after the Spin-Off.

New Energizer will establish medical and dependent care flexible spending accounts similar to those maintained by the Company. New Energizer will credit the flexible spending accounts of New Energizer Employees and New Energizer Former Employees with an amount equal to the balance of such participant’s account under the Company flexible spending accounts immediately prior to the Spin-Off. The Company shall pay New Energizer the net aggregate balance if such amount is positive, and New Energizer shall pay the Company the net aggregate balance if such amount is negative.

The Company and New Energizer will each retain responsibility for leave of absence obligations related to their respective employees. New Energizer will assume liability for the Collective Bargaining Agreement between Energizer Battery Manufacturing, Inc. and EMD Facility, Marietta, Ohio and United Steelworkers Local 10069P

effective May 1, 2013 – April 30, 2016. All workers’ compensation liabilities known as of the Spin-Off will be scheduled and responsibility for such liabilities allocated to the Company or New Energizer, as applicable, and any such claim that is not scheduled shall be allocated to the Company or New Energizer based on whether the claim is by a Company Employee or Company Former Employee or New Energizer Employee or New Energizer Former Employee. In addition, claims and litigation are the responsibility of the Company or New Energizer in the manner allocated in the Separation Agreement and schedules thereto.

Reciprocal Trademark License Agreements

On June 25, 2015, the Company and a subsidiary of New Energizer entered into a Trademark License Agreement in connection with the Spin-Off, pursuant to which the New Energizer subsidiary will provide the Company with a two-year transitional license to use and display certain New Energizer trademarks (including ENERGIZER, EVEREADY and the Energizer logo) in connection with, among other things: advertising, marketing, sales and promotional materials, products and product packaging, inventory and business names. Similarly, on June 25, 2015, New Energizer and certain subsidiaries of the Company entered into a Trademark License Agreement in connection with the Spin-Off, pursuant to which the Company subsidiaries will provide New Energizer with a two-year transitional license to use and display certain Company trademarks (including SCHICK and WILKINSON-SWORD) in connection with, among other things: advertising, marketing, sales, promotional materials, products and product packaging, inventory, and business names.

These transitional trademark licenses are worldwide, fully paid-up and royalty-free. Each of the licensors agreed to exercise quality control over the licensee’s use of the licensed trademarks. Subject to certain limited termination rights, including in the event of an uncured breach of a material term applicable to the licensed trademarks, the transitional trademark licenses are irrevocable. Upon certain termination events, an additional sell-off period of up to one year will apply for inventory in existence as of the distribution date. Under these trademark license agreements, subsidiaries of the Company and New Energizer, during such time as they retain such subsidiary status, have the right to exploit the licensed assets to the same extent as their respective parent companies.

The descriptions of the reciprocal Trademark License Agreement are qualified in their entirety by reference to the full text of the Trademark License Agreements, which are filed as Exhibits 10.1 and 10.2, respectively, to this Current Report on Form 8-K and incorporated by reference herein.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Current Report on Form 8-K to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: June 29, 2015

EXHIBIT INDEX