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

UnitedHealth CEO steps down as insurer suspends its financial outlook, 5 months after UnitedHealthcare boss was killed in Manhattan ambush

By
Michelle Chapman
Michelle Chapman
and
The Associated Press
The Associated Press
Down Arrow Button Icon
By
Michelle Chapman
Michelle Chapman
and
The Associated Press
The Associated Press
Down Arrow Button Icon
May 13, 2025, 7:50 AM ET
Andrew Witty, Chief Executive Officer of UnitedHealth Group, testifies at a Senate Finance Committee hearing examining cyber attacks on health care, and the Change Healthcare cyber attack, on May 1, 2024, on Capitol Hill in Washington.
Andrew Witty, Chief Executive Officer of UnitedHealth Group, testifies at a Senate Finance Committee hearing examining cyber attacks on health care, and the Change Healthcare cyber attack, on May 1, 2024, on Capitol Hill in Washington.Jacquelyn Martin—AP

UnitedHealth CEO Andrew Witty is stepping down for personal reasons and the nation’s largest health insurer suspended its full-year financial outlook due to higher-than-expected medical costs.

Recommended Video

UnitedHealth cut its 2025 forecast last month following it’s first quarterly earnings miss in more than a decade. Shares of UnitedHealth, which have plummeted 38% since the deadly Dec. 4 ambush of company executive Brian Thompson in midtown Manhattan, fell another 8% before the opening bell Tuesday.

The Minnesota company said Tuesday that Chairman Stephen Hemsley will become CEO, effective immediately.

Hemsley was UnitedHealth Group CEO from 2006 to 2017. He will remain chairman of the company’s board. Witty will serve as a senior adviser to Hemsley.

“Leading the people of UnitedHealth Group has been a tremendous honor as they work every day to improve the health system, and they will continue to inspire me,” Witty said.

UnitedHealth said that it suspended its 2025 outlook as medical costs of many Medicare Advantage beneficiaries new to UnitedHealthcare were higher than expected.

More than 50 million people have health insurance under UnitedHealth Group Inc. It also has a large pharmacy benefit manager that runs prescription drug coverage and a growing Optum segment that delivers care and provides technical support.

UnitedHealthcare is the nation’s largest provider of Medicare Advantage plans, with more than 8 million customers. Those are privately run versions of the federal government coverage program mostly for people ages 65 and older.

The company has wrestled with the media attention surrounding Luigi Mangione, who was indicted last month on a federal murder charge in the killing of UnitedHealthcare CEO Brian Thompson.

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Authors
By Michelle Chapman
See full bioRight Arrow Button Icon
By The Associated Press
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
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
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
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
Fortune Secondary Logo
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Most Popular

placeholder alt text
Success
Japanese companies are paying older workers to sit by a window and do nothing—while Western CEOs demand super-AI productivity just to keep your job
By Orianna Rosa RoyleFebruary 27, 2026
1 day ago
placeholder alt text
Success
Walmart exec says U.S. workforces needs to take inspiration from China where ‘5 year-olds are learning DeepSeek’
By Preston ForeFebruary 27, 2026
2 days ago
placeholder alt text
Personal Finance
Current price of gold as of February 27, 2026
By Danny BakstFebruary 27, 2026
1 day ago
placeholder alt text
AI
The week the AI scare turned real and America realized maybe it isn't ready for what's coming
By Nick LichtenbergFebruary 28, 2026
13 hours ago
placeholder alt text
Law
China's government intervenes to show Michigan scientists were carrying worms, not biological materials
By Ed White and The Associated PressFebruary 26, 2026
2 days ago
placeholder alt text
Middle East
Iran is now on 'death ground' amid existential threat from U.S. attacks and could 'go big' in retaliation, former NATO commander warns
By Jason MaFebruary 28, 2026
5 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.


Latest in Finance

Middle EastIran
Trump calls death of Ayatollah Ali Khamenei the ‘single greatest chance for the Iranian people to take back their Country’
By Jon Gambrell, Konstantin Toropin, Josh Boak, Aamer Madhani and The Associated PressFebruary 28, 2026
31 minutes ago
Middle EastDubai
Dubai’s worst nightmare unfolds as Iran strikes Gulf neighbors
By Dana Khraiche, Fiona MacDonald and BloombergFebruary 28, 2026
49 minutes ago
Middle EastIran
Iran’s missile barrage tests whether U.S. has enough interceptors
By Gerry Doyle and BloombergFebruary 28, 2026
1 hour ago
Middle EastIran
Iran is now on ‘death ground’ amid existential threat from U.S. attacks and could ‘go big’ in retaliation, former NATO commander warns
By Jason MaFebruary 28, 2026
5 hours ago
trump
LawTariffs
‘Why shouldn’t we get our money back too?’ Normal people are starting to demand Trump tariff refunds
By Mae Anderson and The Associated PressFebruary 28, 2026
6 hours ago
warren
InvestingBerkshire Hathaway
Berkshire Hathaway shareholders just woke up to a letter by someone other than Warren Buffett
By Josh Funk and The Associated PressFebruary 28, 2026
7 hours ago