AmerisourceBergen Corporation (NYSE: ABC) today announced that it priced $500 million aggregate principal amount of its 3.25% Senior Notes due March 1, 2025 and $500 million aggregate principal amount of its 4.25% Senior Notes due March 1, 2045 (collectively, the “Notes”), in an underwritten registered public offering. The offering is being made pursuant to an effective shelf registration statement AmerisourceBergen filed with the Securities and Exchange Commission (the “SEC”) on November 27, 2012. The offering is expected to close on February 20, 2015, subject to customary closing conditions. AmerisourceBergen intends to use the net proceeds from the offering, together with the net proceeds from the recently announced $1 billion senior unsecured term loan credit facility and cash on hand, to finance the previously disclosed proposed acquisition (the “Acquisition”) of MWI Veterinary Supply, Inc. (“MWI”), and to pay related fees and expenses, including the retirement of all outstanding indebtedness of MWI. The offering is not contingent on the consummation of the Acquisition which, if completed, will occur subsequent to the closing of the offering. In the event that the Acquisition is not completed on or before May 15, 2015, or, if prior to such time, the acquisition agreement is terminated, other than in connection with the consummation of the Acquisition, and is not otherwise amended or replaced, then the Notes are subject to mandatory redemption, in whole but not in part, at a redemption price equal to 101% of the aggregate principal amount of the Notes, plus accrued and unpaid interest to, but not including, the redemption date. The Notes offering is expected to close prior to the consummation of the Acquisition.

The joint book-running managers for the offering are Merrill Lynch, Pierce, Fenner & Smith Incorporated and Wells Fargo Securities, LLC. Earlier today, AmerisourceBergen filed a preliminary prospectus supplement and an accompanying prospectus with the SEC in connection with the offering of the Notes. Copies of these materials can be made available by contacting: Merrill Lynch, Pierce, Fenner & Smith Incorporated at 222 Broadway, New York, New York 10038, Attention: Prospectus Department, or by telephone at 1-800-294-1322; or Wells Fargo Securities, LLC at 608 2nd Avenue, South Minneapolis, MN 55402, Attention: WFS Customer Service, or by telephone at 1-800-645-3751, or by email at wfscustomerservice@wellsfargo.com. Electronic copies of the preliminary prospectus supplement and accompanying prospectus are also available on the SEC’s Web site at www.sec.gov.

This news release shall not constitute an offer to sell or the solicitation of an offer to buy the Notes, nor shall there be any sale of the Notes in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About AmerisourceBergen

AmerisourceBergen is one of the largest global pharmaceutical sourcing and distribution services companies, helping both healthcare providers and pharmaceutical and biotech manufacturers improve patient access to products and enhance patient care. With services ranging from drug distribution and niche premium logistics to reimbursement and pharmaceutical consulting services, AmerisourceBergen delivers innovative programs and solutions across the pharmaceutical supply channel. With over $120 billion in annual revenue, AmerisourceBergen is headquartered in Valley Forge, PA, and employs approximately 14,000 people. AmerisourceBergen is ranked #28 on the Fortune 500 list.

AmerisourceBergen's Cautionary Note Regarding Forward-Looking Statements

Certain of the statements contained in this press release are "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Words such as "expect," "likely," "outlook," "forecast," "would," "could," "should," "can," "will," "project," "intend," "plan," "continue," "sustain," "synergy," "on track," "believe," "seek," "estimate," "anticipate," "may," "possible," "assume," variations of such words, and similar expressions are intended to identify such forward-looking statements. These statements are based on management's current expectations and are subject to uncertainty and change in circumstances. These statements are not guarantees of future performance and are based on assumptions that could prove incorrect or could cause actual results to vary materially from those indicated. Among the factors that could cause actual results to differ materially from those projected, anticipated, or implied are the following: changes in pharmaceutical market growth rates; price inflation in branded and generic pharmaceuticals and price deflation in generics; declining economic conditions, increased costs of maintaining, or reductions in AmerisourceBergen's ability to maintain, adequate liquidity and financing sources, and interest rate and foreign currency exchange rate fluctuations; the disruption of AmerisourceBergen's cash flow and ability to return value to its stockholders in accordance with its past practices, disruption of or changes in vendor, payer and customer relationships and terms, and the reduction of AmerisourceBergen's operational, strategic or financial flexibility; volatility and disruption of the capital and credit markets; economic, business, competitive and/or regulatory developments in countries where AmerisourceBergen does business and/or operates outside of the United States; supplier bankruptcies, insolvencies or other credit failures; customer bankruptcies, insolvencies or other credit failures; the loss of one or more key customer or supplier relationships resulting in changes to the customer or supplier mix; the retention of key customer or supplier relationships under less favorable economics or the adverse resolution of any contract or other dispute with customers or suppliers; risks associated with the strategic, long-term relationship among Walgreen Co., Alliance Boots GmbH, and AmerisourceBergen, including the occurrence of any event, change or other circumstance that could give rise to the termination, cross-termination or modification of any of the transaction documents among the parties (including, among others, the distribution agreement or the generics agreement), an impact on AmerisourceBergen's earnings per share resulting from the issuance of the warrants to subsidiaries of Walgreen Co. and Alliance Boots GmbH (the "Warrants"), an inability to realize anticipated benefits (including benefits resulting from participation in the Walgreens Boots Alliance Development GmbH joint venture), AmerisourceBergen's inability to implement its hedging strategy to mitigate the potentially dilutive effect of the issuance of its common stock under its special share repurchase program due to its financial performance, the current and future share price of its common stock, its expected cash flows, competing priorities for capital, and overall market conditions; increasing governmental regulations regarding the pharmaceutical supply channel; federal and state government enforcement initiatives to detect and prevent suspicious orders of controlled substances and the diversion of controlled substances, federal and state prosecution of alleged violations of related laws and regulations, and any related litigation, including shareholder derivative lawsuits or other disputes relating to our distribution of controlled substances; changes in federal and state legislation or regulatory action affecting pharmaceutical product pricing or reimbursement policies, including under Medicaid and Medicare, and the effect of such changes on AmerisourceBergen's customers; frequent changes to laws and regulations in respect of healthcare fraud and abuse and the increased scrutiny of the federal government related thereto; qui tam litigation for alleged violations of fraud and abuse laws and regulations and/or any other laws and regulations governing the marketing, sale, purchase and/or dispensing of pharmaceutical products or services and any related litigation, including shareholder derivative lawsuits; the acquisition of businesses that do not perform as AmerisourceBergen expects or that are difficult for it to integrate or control or AmerisourceBergen's inability to successfully complete any other transaction that it may wish to pursue from time to time; risks associated with the acquisition of MWI Veterinary Supply, Inc. (“MWI”), including the anticipated changes in the business environment in which AmerisourceBergen or MWI operates and in AmerisourceBergen’s future operating results relating to the potential benefits of a transaction with MWI and the ability of AmerisourceBergen and MWI to complete the transactions contemplated by the merger agreement, including the parties’ ability to satisfy the conditions to the transaction set forth in the merger agreement, uncertainties as to the timing of the tender offer and the subsequent merger, the possibility that various conditions to the consummation of the tender offer or the merger may not be satisfied or waived, and the effects of disruption from the transactions on the respective businesses of AmerisourceBergen and MWI and the fact that the announcement and pendency of the transactions may make it more difficult to establish or maintain relationships with employees, suppliers and other business partners; risks associated with international business operations, including non-compliance with the U.S. Foreign Corrupt Practices Act, anti-bribery laws and economic sanctions and import laws and regulations; risks generally associated with the sophisticated information systems on which AmerisourceBergen relies, including significant breakdown or interruption of such systems; risks generally associated with data privacy regulation and the international transfer of personal data; changes in tax laws or legislative initiatives that could adversely affect AmerisourceBergen's tax positions and/or AmerisourceBergen's tax liabilities or adverse resolution of challenges to AmerisourceBergen's tax positions; natural disasters or other unexpected events that affect AmerisourceBergen's operations; and other economic, business, competitive, legal, tax, regulatory and/or operational factors affecting AmerisourceBergen's business generally. Certain additional factors that management believes could cause actual outcomes and results to differ materially from those described in forward-looking statements are set forth (i) in Item 1A (Risk Factors) and Item 1 (Business) in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2014 and elsewhere in that report and (ii) in other reports.

Additional Information

This communication is for informational purposes only and is neither an offer to purchase nor a solicitation of an offer to sell shares of MWI common stock. AmerisourceBergen has filed with the SEC a tender offer statement on Schedule TO regarding the tender offer described herein, and MWI has filed with the SEC a solicitation/recommendation statement on Schedule 14D-9 regarding such tender offer. MWI’s stockholders are strongly advised to read these tender offer materials, as well as any other documents relating to the tender offer and the associated transactions that are filed with the SEC, carefully and in their entirety, as they may be amended from time to time, because they contain important information about the tender offer that MWI’s stockholders should consider prior to making any decisions with respect to the tender offer. Stockholders of MWI may obtain a free copy of these documents at the website maintained by the SEC at www.sec.gov, by directing a request to the Information Agent at (866) 277-8239 or MWIV@georgeson.com.