Exhibit 99.4

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

(Dollar amounts presented in millions, except per share amounts)

On December 18, 2013, Perrigo Company plc (“New Perrigo”), formerly known as Perrigo Company Limited and the successor registrant to Perrigo Company (“Perrigo”) acquired Elan Corporation, plc (“Elan”) pursuant to a definitive agreement dated July 28, 2013. At the close of the Transaction (as defined herein), Perrigo and Elan became subsidiaries of New Perrigo. See Note 1 to this unaudited pro forma condensed combined financial information for additional information on the Transaction.

The unaudited pro forma condensed combined financial information is presented to illustrate the effects of the acquisition of Elan by Perrigo and the contemporaneous financing transactions.

The unaudited pro forma condensed combined balance sheet as of September 28, 2013 and the unaudited pro forma condensed combined statements of operations for the three months ended September 28, 2013 and for the fiscal year ended June 29, 2013 are based upon, derived from, and should be read in conjunction with, the historical audited financial statements of Perrigo (which are available in Perrigo’s Form 10-K for the fiscal year ended June 29, 2013), the historical audited financial statements of Elan (which are available in Elan’s Annual Report on Form 20-F/A for the year ended December 31, 2012, as amended), the historical unaudited financial information of Perrigo for the three-month period ended September 28, 2013 (which is available in Perrigo’s Form 10-Q for the period ended September 28, 2013), the historical unaudited financial information of Elan for the six-month periods ended June 30, 2013 and June 30, 2012 (which is available in Elan’s Form 6-K furnished with the SEC on August 20, 2013), and the historical unaudited financial information of Elan for the three-month period ended September 30, 2013 (which is available in Elan’s Form 6-K furnished with the SEC on October 24, 2013).

The acquisition of Elan has been accounted for as a business combination using the acquisition method of accounting under the provisions of Accounting Standards Codification (“ASC”) 805, “Business Combinations”, (“ASC 805”). The unaudited pro forma condensed combined financial information set forth below gives effect to the following:

The pro forma adjustments are based upon available information and certain assumptions which management believes are reasonable under the circumstances and which are described in the accompanying notes to the unaudited pro forma condensed combined financial information. Actual results may differ materially from the assumptions within the accompanying unaudited pro forma condensed combined financial information. Under ASC 805, generally all assets acquired and liabilities assumed are recorded at their acquisition date fair value. For pro forma purposes, the fair value of Elan’s identifiable tangible and intangible assets acquired and liabilities assumed are based on a preliminary estimate of fair value. Any excess of the purchase price over the fair value of identified assets acquired and liabilities assumed will be recognized as goodwill. Management believes the fair values recognized for the assets acquired and liabilities assumed are based on reasonable estimates and assumptions.

The unaudited pro forma condensed combined statements of operations for the three-months ended September 28, 2013 and the fiscal year ended June 29, 2013 assume the completion of the acquisition and related incurrence of debt and pay down of existing debt occurred on July 1, 2012. The unaudited pro forma condensed combined balance sheet as of September 28, 2013 assumes those transactions occurred on September 28, 2013. The unaudited pro forma condensed combined financial information has been prepared by management in accordance with the regulations of the SEC and is not necessarily indicative of the combined financial position or results of operations that would have been realized had the acquisition occurred as of the dates indicated, nor is it meant to be indicative of any anticipated combined financial position or future results of operations that New Perrigo will experience after

the acquisition. In addition, the accompanying unaudited pro forma condensed combined statement of operations does not include any expected cost savings, operating synergies, or revenue enhancements, which may be realized subsequent to the acquisition or the impact of any non-recurring activity and one-time transaction-related or integration-related costs. No material transactions existed between Perrigo and Elan during the pro forma period.

This unaudited pro forma condensed combined financial information should be read in conjunction with the accompanying notes and assumptions as well as the historical consolidated financial statements and related notes of Perrigo and Elan.

New Perrigo

Unaudited Pro Forma Condensed

Combined Balance Sheet

As of September 28, 2013

See the accompanying notes to the unaudited pro forma condensed combined balance sheet.

New Perrigo

Unaudited Pro Forma Condensed Combined Statement of Operations

For the Three Months Ended September 28, 2013

See the accompanying notes to the unaudited pro forma condensed combined statement of operations.

New Perrigo

Unaudited Pro Forma Condensed Combined Statement of Operations

For the Fiscal Year Ended June 29, 2013

See the accompanying notes to the unaudited pro forma condensed combined statement of operations.

1. Description of Transactions

On December 18, 2013, pursuant to the agreement, dated July 28, 2013 (the “Transaction Agreement”), between Perrigo, Elan, Leopard Company (“MergerSub”), Habsont Limited and New Perrigo, (a) New Perrigo acquired Elan (the “Acquisition”) pursuant to a scheme of arrangement under Section 201, and a capital reduction under Sections 72 and 74, of the Irish Companies Act of 1963 (the “Scheme”) and (b) MergerSub merged with and into Perrigo, with Perrigo as the surviving corporation in the merger (the “Merger” and, together with the Acquisition, the “Transactions”). Following the consummation of the Transactions, each of Perrigo and Elan became wholly owned subsidiaries of New Perrigo.

Pursuant to the terms of the Transaction Agreement, each Elan ordinary share (“Elan Ordinary Shares”) and each Elan American Depositary Share (“Elan ADSs” and, together with the Elan Ordinary Shares, the “Elan Shares”) was converted into the right to receive $6.25 in cash and 0.07636 of a New Perrigo Ordinary Share, and each of Perrigo’s common shares (the “Perrigo Common Shares”) was converted into the right to receive $0.01 in cash and one New Perrigo Ordinary Share.

The issuance of New Perrigo Ordinary Shares in connection with the Transactions was registered under the Securities Act of 1933, as amended (the “Securities Act”), pursuant to New Perrigo’s registration statement on Form S-4 (File No. 333-190859) (the “Registration Statement”) filed with the SEC and declared effective on October 9, 2013. The definitive joint proxy statement/prospectus of Perrigo and Elan, dated October 15, 2013 that forms a part of the Registration Statement contains additional information about the Transactions and the other transactions contemplated by the Transaction Agreement, including a description of the treatment of equity awards and information concerning the interests of directors, executive officers and affiliates of Perrigo and Elan in the Transactions.

In connection with the acquisition, the following financing transactions were entered into:

New Perrigo used the proceeds from borrowings under the Unsecured Senior Notes and Term Loan Credit Agreement to finance, in part, (a) the repayment of existing indebtedness of Perrigo and (b) the transactions and fees and expenses in connection therewith (including in connection with hedging obligations).

2. Basis of Presentation

The unaudited pro forma condensed combined balance sheet gives effect to the acquisition of Elan as if the acquisition occurred on September 28, 2013, which is the last day of the first quarter of Perrigo’s 2014 fiscal year. The pro forma adjustments to reflect the acquired assets and assumed liabilities of Elan are based on the fair value of Elan’s assets and liabilities. The historical Elan statements of operations information is based upon the periods from July 1, 2013 to September 30, 2013 and July 1, 2012 to June 30, 2013, respectively. Management is not aware of any material transactions entered into by Elan on September 29 or September 30, 2013.

The equity consideration transferred was based on the fair value of Perrigo common shares on the acquisition date (December 18, 2013) of $155.34 per share.

The unaudited pro forma condensed combined financial information was prepared using the acquisition method of accounting and was based on the historical financial information of Perrigo and Elan. The acquisition method of accounting, based on ASC 805, uses the fair value concepts defined in ASC 820, “Fair Value Measurement” (“ASC 820”). The historical consolidated financial information has been adjusted in the accompanying unaudited pro forma condensed combined financial information to give effect to pro forma events that are (i) directly attributable to the acquisition, (ii) factually supportable, and (iii) with respect to the unaudited pro forma condensed combined statements of operations, expected to have a continuing impact on the consolidated results.

ASC 820 defines fair value, establishes the framework for measuring fair value for any asset acquired or liability assumed under U.S. GAAP, expands disclosures about fair value measurements and specifies a hierarchy of valuation techniques based on the nature of the inputs used to develop the fair value measures. Fair value is defined in ASC 820 as “the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date”. This is an exit price concept for the valuation of an asset or liability. Market participants are assumed to be buyers or sellers in the most advantageous market for the asset or liability. Fair value measurement for an asset assumes the highest and best use by these market participants, and as a result, assets may be required to be recorded which are not intended to be used or sold and/or to value assets at a fair value measurement that do not reflect management’s intended use for those assets. Fair value measurements can be highly subjective and it is possible the application of reasonable judgment could develop different assumptions resulting in a range of alternative estimates using the same facts and circumstances. ASC 805 requires, among other things, that most assets acquired and liabilities assumed in a business combination be recognized at their fair values as of the acquisition date. Assets acquired and liabilities assumed in a business combination that arise from contingencies must be recognized at fair value if fair value can be reasonably estimated. If the fair value of an asset or liability that arises from a contingency cannot be determined, the asset or liability would be recognized in accordance with ASC 450, “Disclosure of Certain Loss Contingencies” (“ASC 450”). If the fair value is not determinable and the ASC 450 criteria are not met, no asset or liability would be recognized.

3. Accounting Policies

Acquisition accounting rules require evaluation of certain assumptions, estimates or determination of financial statement classifications which are completed during the measurement period as defined in current accounting standards. The accounting policies of Perrigo and acquisition accounting rules may materially vary from those of Elan. During the preparation of this unaudited pro forma condensed combined financial information, management has performed a preliminary analysis and is not aware of any material differences, and accordingly, this unaudited pro forma condensed combined financial information assumes no material differences in accounting policies between the two companies. During the measurement period, management will conduct a final review of Elan’s accounting policies in an effort to determine if differences in accounting policies require adjustment or reclassification of Elan’s results of operations or reclassification of assets or liabilities to conform to Perrigo’s accounting policies and classifications or are required by acquisition accounting rules. As a result of that review, management may identify differences that, when conformed, could have a material impact on these unaudited pro forma condensed combined financial statements.

4. Reconciliation of Elan’s Historical Statement of Operations

A reconciliation of Elan’s historical statement of operations for the twelve months ended June 30, 2013 is as follows:

The historical statement of operations of Elan includes certain charges and credits which management believes will not have a continuing impact on the combined business. These have not been removed from the unaudited pro forma condensed combined statement of operations, as they are not directly attributable to the Transaction. Further information on the above charges and credits can be found in Elan’s Form 20-F/A filed on June 28, 2013 and Elan’s Form 6-K furnished to the SEC on August 20, 2013.

5. Unaudited Pro Forma Condensed Combined Balance Sheet Adjustments

The allocation of the purchase price discussed below is preliminary. An independent third-party appraiser assisted in performing a preliminary valuation. The final allocation of the purchase price will be determined at a later date and is dependent on a number of factors, including the final evaluation of the fair value of Elan’s tangible and identifiable intangible assets acquired and liabilities assumed. Such final adjustments, including increases or decreases to amortization resulting from the allocation of purchase price to amortizable tangible and intangible assets, may be material.

The consideration and preliminary allocation of the purchase price to the fair value of Elan’s assets acquired and liabilities assumed as if the acquisition date were September 28, 2013 is presented as follows:

The fair value of identifiable intangible assets is determined primarily using the “income approach”, which is a valuation technique that provides an estimate of the fair value of an asset based on market participant expectations of the cash flows an asset would generate over its remaining useful life. Some of the more significant assumptions inherent in the development of the identifiable intangible asset valuations, from the perspective of a market participant, include the estimated revenues that will be received for each product, the appropriate discount rate selected in order to measure the risk inherent in each future cash flow stream, the assessment of each asset’s life cycle, competitive trends impacting each asset’s cash flow stream, as well as other factors. No assurances can be given that the underlying assumptions used to prepare the discounted cash flow analysis will not change or the timely completion of each project to commercial success will occur. For these and other reasons, actual results may vary significantly from estimated results. The methodologies and significant assumptions utilized to preliminarily value the intangible assets were as follows:

Cash paid to vested Elan share option and Elan share award holders as consideration represents the cash paid to settle share options and share awards attributable to pre-combination service which is recognized as part of the purchase consideration transferred. The remaining portion has been expensed in the post-combination period and has been reflected as a reduction of retained earnings in the unaudited condensed combined pro forma balance sheet.

6. Unaudited Pro Forma Condensed Combined Statement of Operations Adjustments For The Three Months Ended September 28, 2013

Amortization expense has been calculated on a preliminary basis using the straight-line method over the estimated useful life.

The interest rates used for purposes of preparing the accompanying unaudited pro forma condensed combined financial statements may be considerably different than the actual interest rates incurred based on market conditions at the time of the refinancing. If the interest rate on New Perrigo’s Term Loan Credit Agreement were to increase or decrease by 1/8th of a percent, New Perrigo’s pro forma net income would increase or decrease by $0.3.

The interest rates under the Unsecured Senior Notes offered by New Perrigo are as follows:

7. Unaudited Pro Forma Condensed Combined Statement of Operations Adjustments For The Fiscal Year Ended June 29, 2013

Amortization expense has been calculated on a preliminary basis using the straight-line method over the estimated useful life.

The interest rates used for purposes of preparing the accompanying unaudited pro forma condensed combined financial statements may be considerably different than the actual interest rates incurred based on market conditions at the time of the refinancing. If the interest rate on New Perrigo’s Credit Agreement Term Loan were to increase or decrease by 1/8th of a percent, New Perrigo’s pro forma net income would increase or decrease by $1.0.

The interest rates under the Unsecured Senior Notes issued by New Perrigo are expected to be as follows:

8. Earnings per Share

The unaudited pro forma condensed combined basic and diluted earnings per share calculations are based on the consolidated basic and diluted weighted average shares of Perrigo. The pro forma basic and diluted weighted average shares outstanding are a combination of historic Perrigo common shares and the shares issued as part of the Transaction at an exchange ratio of 0.07636 New Perrigo Ordinary Share per Elan Share.