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Allergan

Allergan, the Irvine-based pharmaceutical giant behind Botox, was acquired by AbbVie in a $63B deal in 2020.

Allergan

Allergan was founded in 1950 as a small eye-care business in Los Angeles, acquiring critical momentum under CEO David Pyott from 1998 onward. Pyott transformed the company into a $70B market-cap leader in medical aesthetics, neuroscience, and eye health, with brands like Botox and Restasis driving revenue. The firm's headquarters moved to Irvine, California, where its footprint anchored a regional research hub for pharmaceutical development. Allergan's strategy centered on aggressive R&D investment and targeted acquisitions — it spent over $2.5 billion annually on research by 2018, with a pipeline spanning migraine treatments (Ubrelvy), glaucoma therapies, and dermal fillers. Its portfolio included branded drugs, biologic products, and medical devices sold across 100 countries, with a particularly strong presence in the US, Europe, and Asia. The firm's largest single investment came in 2015 when it acquired the generics powerhouse Allergan plc (renamed later) for $40.5 billion in a reverse merger structure. The company employed over 16,000 people at its peak (per SEC filings, 2019), with key R&D and manufacturing sites in Irvine, Dublin, and Waltham, Massachusetts. In 2019, AbbVie announced its acquisition of Allergan in a $63 billion cash-and-stock deal, closing in May 2020. Post-acquisition, the Allergan name continued as a subsidiary, with Brent Saunders — who had returned as CEO in 2018 — overseeing integration. Allergan's corporate structure during the Pyott era was unusual for its dual listing on both the New York Stock Exchange and the Tokyo Stock Exchange, reflecting its global ambitions. The firm also operated the Allergan Foundation, which donated over $20 million annually (per foundation tax filings) to healthcare access and medical research initiatives, entirely separate from its commercial operations. That foundation — now part of the AbbVie ecosystem — remains a separate entity with its own board.

General information

Firm type

other

Year founded

1950

AUM

Undisclosed

Location

Region

North America

Country

United States

City

Irvine

Corporate office

Irvine, CA, United States

Principals

Brent Saunders

CEO (2014-2018)

David Pyott

CEO (1998-2014)

Sector focus

Healthcare ServicesPharmaceuticalsMedical Devices

Frequently asked questions

Who founded Allergan and when?

Allergan was originally founded in 1950 as a small eye-care company in Los Angeles. Its transformation into a global pharmaceutical leader is largely attributed to CEO David Pyott, who led from 1998 to 2014.

What were Allergan's key drug products?

Allergan's most famous product is Botox (onabotulinumtoxinA), used for both medical and cosmetic purposes. Other major drugs include Restasis for dry eye, Ubrelvy for migraines, and the dermal filler portfolio under the Juvederm brand.

How did Allergan's acquisition by AbbVie impact its operations?

The $63 billion acquisition closed in May 2020. Allergan continues as a wholly owned subsidiary of AbbVie, with its headquarters in Irvine remaining a key R&D and manufacturing site for medical aesthetics and neuroscience drugs.

What investment stages did Allergan target as a corporate entity?

As a publicly traded pharmaceutical company, Allergan invested heavily in late-stage drug development and regulatory approvals. It also pursued strategic acquisitions of smaller biotech firms, most notably the $40.5 billion reverse merger with Actavis in 2015.

Does Allergan operate any separate philanthropic structures?

Yes, Allergan operated the Allergan Foundation, a separate charitable entity that donated over $20 million annually to healthcare access and medical research. Post-acquisition, the foundation is now part of AbbVie's philanthropic ecosystem but maintains its own board.

Is Allergan still a standalone stock after the AbbVie deal?

No. Allergan shares ceased trading on the NYSE on May 8, 2020, when the acquisition closed. Former Allergan shareholders received 0.866 AbbVie shares per Allergan share plus cash.

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