• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI

2

Former top Russian official admits the country is over Putin and can 'imagine a future without him' — even elites bail as Kremlin seizes their assets 

3

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises

1

Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI

2

Former top Russian official admits the country is over Putin and can 'imagine a future without him' — even elites bail as Kremlin seizes their assets 

3

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
FinanceAllergan

Allergan CEO: How to survive an activist attack

By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
February 12, 2015, 7:00 AM ET

If Allergan CEO David Pyott were to do it all over again, he says he would be just as aggressive.

Last year, Allergan became the target of a coordinated hostile takeover bid from activist investor Bill Ackman and rival pharmaceutical company Valeant. The M&A battle was one of the most contentious in recent memory. To fend off the attack, Allergan (AGN) said Valeant’s financial reports were opaque and potentially misleading. It called Valeant’s business model unsustainable. And, eventually, it sued Valeant (VRX) and Ackman, accusing both of them of fraud and insider trading.

“I was quoted as saying Valeant is vile,” says Pyott.

And he says he would do it all again.

In an interview with Fortune, Pyott says the decision to go on the attack was his own, but he admits that having good advisors around him helped solidify his counterattack. He says his stance immediately won him private praise from some long-term shareholders.

Pyott says he knew Valeant CEO Michael Pearson before the company’s became entangled and that, as early as 2013, Pearson was interested in acquiring Allergan. He ran the numbers and says that he concluded that Valeant couldn’t make a successful hostile bid on its own. He didn’t know, however, that Valeant had teamed up with Ackman until a Wall Street Journal reporter called him looking for a response shortly before the bid was announced.

Almost immediately, Pyott says defending his company against the Ackman-Valeant combo was his full time job for most of 2014, spending 90% of his time on the hostile attack. He handed over day-to-day operations at Allergan to his top deputy. In that period, Allergan’s board met 34 times, mostly on Sundays, to strategize.

In the end, the effort paid off. Allergan was eventually acquired by Activis (ACT) for $219 a share, far more than the original $152 a share offer that Valeant and Ackman had offered. And Pyott says he ended up with a buyer that values investment in research and development as much as he does. Valeant would likely have cut R&D at Allergan—which is most famous for developing Botox—by 95%.

Over the past few months, Pyott says he has received several calls from CEOs who have either come under attack by activist shareholders or are worried they might be. They call to pick his brain or offer him congratulations. He says he was even recently asked to address a corporate board on the subject.

When a reporter recently joked that he could probably make a lot of money as a consultant to companies undergoing activist attack, Pyott responded that he probably could, but no thanks. Instead, he’s looking at helping to start a hospital in Africa, which is as far away as he can get from Bill Ackman and other activists.

About the Author
By Stephen Gandel
See full bioRight Arrow Button Icon

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Finance

Markets are jittery as the global oil crisis bleeds into a global debt selloff, while Trump weighs new military options on Iran
EnergyOil
Markets are jittery as the global oil crisis bleeds into a global debt selloff, while Trump weighs new military options on Iran
By Jason MaMay 17, 2026
3 hours ago
Gundlach says it’s ‘just not possible’ for the Fed to cut rates
EconomyFederal Reserve
Gundlach says it’s ‘just not possible’ for the Fed to cut rates
By Jordan Fitzgerald, Sam Kim and BloombergMay 17, 2026
6 hours ago
Supply shocks weren’t random. They were strategic—and should be seen as ‘supply coercion’ instead, former Fed official says 
Economysupply chains
Supply shocks weren’t random. They were strategic—and should be seen as ‘supply coercion’ instead, former Fed official says 
By Jason MaMay 17, 2026
6 hours ago
U.S. says China to buy $17 billion of agricultural goods annually
EconomyChina
U.S. says China to buy $17 billion of agricultural goods annually
By Yash Roy and BloombergMay 17, 2026
8 hours ago
The top foreign holders of U.S. debt may soon dump Treasury bonds and bring their money back home, potentially spiking borrowing costs
EconomyDebt
The top foreign holders of U.S. debt may soon dump Treasury bonds and bring their money back home, potentially spiking borrowing costs
By Jason MaMay 17, 2026
9 hours ago
BlackRock private credit fund’s valuations are probed by DOJ
InvestingDepartment of Justice
BlackRock private credit fund’s valuations are probed by DOJ
By Olivia Fishlow, Ava Benny-Morrison and BloombergMay 17, 2026
11 hours ago

Most Popular

Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI
AI
Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI
By Jake AngeloMay 16, 2026
2 days ago
Former top Russian official admits the country is over Putin and can 'imagine a future without him' — even elites bail as Kremlin seizes their assets 
Politics
Former top Russian official admits the country is over Putin and can 'imagine a future without him' — even elites bail as Kremlin seizes their assets 
By Jason MaMay 16, 2026
1 day ago
The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
Politics
The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
By Jake AngeloMay 12, 2026
5 days ago
The top foreign holders of U.S. debt may soon dump Treasury bonds and bring their money back home, potentially spiking borrowing costs
Economy
The top foreign holders of U.S. debt may soon dump Treasury bonds and bring their money back home, potentially spiking borrowing costs
By Jason MaMay 17, 2026
9 hours ago
SpaceX heads into a record-shattering IPO with the 'deepest moat that exists today' as investors vow to 'never bet against Elon'
Innovation
SpaceX heads into a record-shattering IPO with the 'deepest moat that exists today' as investors vow to 'never bet against Elon'
By Jason MaMay 16, 2026
1 day ago
'No one was coming to save me': How Reese Witherspoon built a $900 million company from a problem Hollywood wouldn't fix
Success
'No one was coming to save me': How Reese Witherspoon built a $900 million company from a problem Hollywood wouldn't fix
By Sydney LakeMay 17, 2026
15 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.