(Bloomberg) -- UnitedHealth Group Inc. agreed to buy Catamaran Corp. for about $12.8 billion, bulking up its drug-benefits business to get better negotiating power in talks with pharmaceutical companies over prices.

UnitedHealth will pay $61.50 a share, financing the acquisition with cash and debt, the companies said in a statement. The offer, which would be UnitedHealth’s largest purchase ever, is 27 percent more than Catamaran’s closing share price of $48.32 on Friday.

Companies that provide health insurance to their employees are becoming more reliant on drug-benefit managers to help rein in the rising cost of medications. Express Scripts Holding Co., the biggest in the industry, successfully led a campaign last year to push for discounts on $1,000-a-day treatments for hepatitis C from drugmakers Gilead Sciences Inc. and AbbVie Inc.

Continue Reading for Free

Register and gain access to:

  • Breaking benefits news and analysis, on-site and via our newsletters and custom alerts
  • Educational webcasts, white papers, and ebooks from industry thought leaders
  • Critical converage of the property casualty insurance and financial advisory markets on our other ALM sites, PropertyCasualty360 and ThinkAdvisor
NOT FOR REPRINT

© 2024 ALM Global, LLC, All Rights Reserved. Request academic re-use from www.copyright.com. All other uses, submit a request to [email protected]. For more information visit Asset & Logo Licensing.