Skip to content
City PM
  • Germany
  • France
  • Europe
  • Markets
  • Business
  • Opinion
  • DE
  • Germany
  • France
  • Europe
  • Markets
  • Business
  • Opinion
  • DE
Monday 04 April 2016 11:28 pm

Allergan shares tumble in after hours trading as US Treasury takes further steps to curb ‘inversion’ deals

By: Caitlin Morrison

Add as a preferred source on Google

Shares in Dublin-based pharmaceutical company Allergan have slumped by almost 20 per cent in after-hours trading, after the US Treasury said it was taking steps to curb so-called 'inversion deals' in which US firms reincorporate overseas following an acquisition.

Allergan has agreed to be bought by Pfizer in a $160bn (£112bn) deal that would see Pfizer move its headquarters to Ireland. While the Treasury's attempts to clamp down on inversion deals were announced last year it did not block the deal – with some onlookers speculating that the two pharma firms would not be caught up in the new rules.

However, the US Treasury has announced that it would be making it more difficult for companies to invert by putting a three-year limit on foreign companies stocking up on American assets to avoid ownership requirements for a later inversions deal.

"For years, companies have been taking advantage of a system that allows them to move their tax residences overseas to avoid U.S. taxes without making significant changes in their business operations," said Treasury secretary Jacob J. Lew.

"After an inversion, many of these companies continue to take advantage of the benefits of being based in the United States – including our rule of law, skilled workforce, infrastructure, and research, and development capabilities – all while shifting a greater tax burden to other businesses and American families."

Lew added that the Treasury has taken action twice already to make it harder for companies to invert and reduce the economic benefits of doing so.

"These prior actions had a real impact and have helped slow the pace of these transactions," he continued.

"Today, we are taking further action to make it more difficult to invert. Some companies are serial inverters. They acquire multiple US firms in stock-based transactions over a short period of time. This increases their size and reduces the negative tax consequences of a subsequent inversion. Today’s action takes away a significant amount of the tax benefits of these serial inversions."

Share this article

  • Facebook
  • X
  • LinkedIn
  • WhatsApp
  • Email

Similarly tagged content:

Sections

  • News

Categories

  • Business

Related Topics

  • International

Trending Articles

  • Exclusive: Big Four giant KPMG to cut more jobs

  • Music tycoon Simon Cowell sued by prominent City lawyer

  • Tesco ‘in talks’ to exit eastern Europe

  • The former African gold miner taking on the billionaire Issa brothers

  • Easyjet agrees to £5.7bn Apollo takeover

More from City PM

  • LSE draws up ‘worst case scenario’ US listing flight risk

    Markets
    London Stock Exchange building exterior with financial district skyline, symbolizing global market activity and economic t...
  • Burnham’s choice of Chancellor will define his premiership

    Opinion
    Ed Miliband speaking at a podium during a press conference, addressing energy policy reforms and climate change initiatives.
  • UK firms ‘bracing for change’ as Trump revives tariff threat over Big Tech tax

    Tech
    Donald Trump addressing media at a press event, wearing a suit and tie, with reporters and cameras in the background.
  • Banks ‘not ready’ for motor finance scheme, says City watchdog

    Banking
    Nikhil Rathi, chief executive of the FCA.
  • Sky owner Comcast announces plan to split

    Business
    Rachel Reeves and Comcast
  • ‘Sh*tloads to come’: London takeover spree set to accelerate

    Investing
    GettyImages 2211256637 showing a significant event or figure relevant to recent news updates in the business sector
  • Regulator wins decade-long pricing tussle with Pfizer

    Legal
    Hikma reported a jump in profit for 2024
  • Virgin Media slapped with £28m fine for stopping customers cancelling deals

    Telecoms
    Vans parked at a bustling city intersection surrounded by tall buildings and pedestrians, highlighting urban transportatio...

City PM — European politics, business and analysis.

Europe

  • Germany
  • France
  • Europe
  • UK & Ireland

Topics

  • Business
  • Markets
  • AI
  • Technology
  • Opinion
  • Energy

More

  • Politics
  • Economics
  • Fintech
  • Legal
  • Sport
  • Life

Company

  • About City PM
  • Editorial Policy
  • Corrections
  • Contact
  • Terms of Use
  • Privacy Policy
  • Cookie Policy
© 2026 City PM · Published by CityPM Media, Bahnhofstrasse 65, 8001 Zürich, Switzerland
About · Editorial Policy · Corrections · Contact · Privacy · Facebook