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The Boston Globe

Business

Shire in $4.2 billion deal to buy ViroPharma

Irish firm seeks to boost its drugs for rare diseases

LONDON — The drug maker Shire PLC, seeking to strengthen its portfolio of treatments for rare diseases, said Monday that it would buy ViroPharma Inc. for about $4.2 billion in cash.

The Dublin-based drug maker would pay $50 for each share of ViroPharma, a bio-pharmaceutical company based in Exton, Pa. That represents a 27 percent premium on the company’s closing price Friday, the last trading day before the deal was announced.

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