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

Trendingnow

1

Bolt CEO says he let go of his entire HR team for creating problems that didn’t exist: ‘Those problems disappeared when I let them go’ 

2

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

3

Meet a 21-year-old community college student who's going to China as the first American woman welder in the trades Olympics

1

Bolt CEO says he let go of his entire HR team for creating problems that didn’t exist: ‘Those problems disappeared when I let them go’ 

2

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

3

Meet a 21-year-old community college student who's going to China as the first American woman welder in the trades Olympics
FeaturesUnder Armour

Under Armour founder Kevin Plank is back as CEO, abruptly ending Stephanie Linnartz’s three-year turnaround plan two years early

By
Maria Aspan
Maria Aspan
Down Arrow Button Icon
By
Maria Aspan
Maria Aspan
Down Arrow Button Icon
March 13, 2024, 7:37 PM ET
Stephanie Linnartz is out as CEO of Under Armour after just over a year in the job.
Stephanie Linnartz is out as CEO of Under Armour after just over a year in the job. Noah Willman for Fortune

Stephanie Linnartz got even less time than expected to fix Under Armour’s many problems.

Recommended Video

Linnartz, a veteran executive who was previously No. 2 at Marriott International, left the global hotel chain last year to become CEO of Under Armour. She took over the struggling sportswear chain on Feb. 27, 2023—and, the company said today, she will be leaving the CEO role at the end of this month, after just over a year on the job. She had said that her turnaround strategy for the company would take three years to execute.

Kevin Plank, Under Armour’s controversial founder and controlling shareholder, will again become its CEO, starting April 1. The latest “boomerang” CEO to return to his former job (a group that includes Disney’s Bob Iger and Howard Schultz of Starbucks) will become his company’s fourth CEO in four years. He first “stepped down” from the job in January 2020 to become executive chairman, and he continues to own 65% of the company’s voting shares. 

Under Armour did not give a reason for the abrupt CEO change, and a spokesperson declined to comment. In a LinkedIn post, Plank thanked Linnartz for her contributions to Under Armour: “She helped advance the company forward in many important ways, including elevating our leadership talent in product, design, supply chain, consumer loyalty, and regional management,” he wrote. “Much work still needs to be done, but her leadership helped put us on the right track toward winning.”

Running Under Armour was always going to be a turnaround job—which Linnartz went into with eyes wide open. “I believe in taking calculated risks,” she told me last summer, when I profiled her for Fortune. 

“She has hit the ground running, launching a clearly articulated three-year strategy that sets us up for strategic growth,” Plank told Fortune, in an emailed comment, at the time. “I could not be more excited to have her at Under Armour and to work with her every day.” 

But the challenges Linnartz faced were steep: Under Armour has struggled to grow revenue and profits since its early heyday. Its share price has plummeted since its 2015 peak, and retail experts call its brand identity muddled at best.

Meanwhile, Plank’s politics and personal life have continued to put his company into sometimes-unflattering headlines. And Plank had remained an unavoidable presence at the company well after his departure from the CEO role, as I saw when I visited the company’s headquarters in August—where I was regaled several times with the story of how Plank started the company in his grandmother’s basement in 1996:

“Buildings and apparel lines are numbered either 96 (for the year he founded Under Armour) or 37 (for the number of KP’s college football jersey),” I wrote then. “One corridor at headquarters is decorated with an enormous photo of that jersey, next to blown-up versions of Plank’s early Under Armour business cards, next to #inspo phrases like ‘HUMBLE & HUNGRY BEGINNINGS.’” 

Founder Kevin Plank has remained an outsize presence at Under Armour.
Patrick T. Fallon—Bloomberg via Getty Images

The visible ongoing presence of a charismatic founder can be a problem for a new CEO, says Neil Saunders, a GlobalData Retail analyst who covers Under Armour. “Despite the fact that someone else is CEO, Kevin Plank is still there,” he says. “It is still a very founder-led company…and most CEOs don’t want backseat drivers.”

While Linnartz had hired several new senior executives and launched a rewards program to increase customer loyalty, her strategy had not yielded immediate results: Under Armour’s most recent quarterly revenues fell 6% from a year earlier. 

“She inherited a brand that always had a lot of problems,” says Saunders. “And a year is really not enough time to make a change.”

Investors at first cheered Plank’s return: The company’s shares rose in after-hours trading, before sliding back down. Under Armour also announced that, as Plank becomes CEO, Mohamed A. El-Erian, the former PIMCO CEO, will become the nonexecutive chair of its board.

“As I look back at my past year at Under Armour, one of the things I am most proud of is the excellent talent we have brought into the organization,” Linnartz wrote in an email to Under Armour employees. She added that she wishes Plank, “the executive leadership team and all of you much success in the years ahead.”

The CEO-in-Chief speaks. Fortune sits down with President Trump on tariffs, the Intel stake, Boeing's record orders, and what the markets should expect next. Read the interview
About the Author
By Maria Aspan
LinkedIn iconTwitter icon

Maria Aspan is a former senior writer at Fortune, where she wrote features primarily focusing on gender, finance, and the intersection of business and government policy.

See full bioRight Arrow Button Icon

Latest in Features

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 Features

Anduril CEO Brian Schimpf
MagazineDefense
Inside Anduril: Meet the quiet engineer-CEO building America’s $31 billion weapons startup
By Allie GarfinkleMay 6, 2026
14 days ago
A Michigan farm town voted down plans for a giant OpenAI-Oracle data center. Weeks later, construction began
MagazineData centers
A Michigan farm town voted down plans for a giant OpenAI-Oracle data center. Weeks later, construction began
By Sharon GoldmanMay 6, 2026
14 days ago
The American Express CEO defied haters who said he’d never have the top job—winning with millennials and Gen Z and trouncing the competition
MagazineAmerican Express
The American Express CEO defied haters who said he’d never have the top job—winning with millennials and Gen Z and trouncing the competition
By Shawn TullyMay 6, 2026
14 days ago
Photo of Marc Benioff
Magazinecommunication
Salesforce CEO Marc Benioff turned his earnings call into a vodcast. Why other Fortune 500 CEOs might follow
By Rachel VentrescaMay 6, 2026
14 days ago
Intel Chief Exec, Lip-Bu Tan, on stage
EuropeIntel
Intel’s share price just blew the doors off. One man thinks he knows the reason why
By Kamal AhmedApril 27, 2026
23 days ago
Who owns ideas in the AI age?
MagazinePublishing
Who owns ideas in the AI age?
By Francesca CassidyApril 8, 2026
1 month ago

Most Popular

Bolt CEO says he let go of his entire HR team for creating problems that didn’t exist: ‘Those problems disappeared when I let them go’ 
Workplace Culture
Bolt CEO says he let go of his entire HR team for creating problems that didn’t exist: ‘Those problems disappeared when I let them go’ 
By Preston ForeMay 19, 2026
19 hours 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
8 days ago
Meet a 21-year-old community college student who's going to China as the first American woman welder in the trades Olympics
Future of Work
Meet a 21-year-old community college student who's going to China as the first American woman welder in the trades Olympics
By Mike Householder and The Associated PressMay 17, 2026
3 days ago
Current price of oil as of May 19, 2026
Personal Finance
Current price of oil as of May 19, 2026
By Joseph HostetlerMay 19, 2026
1 day ago
Spirit Airlines apologizes to all the Americans who can't afford any summer vacation flights as it shuts down
Travel & Leisure
Spirit Airlines apologizes to all the Americans who can't afford any summer vacation flights as it shuts down
By Rio Yamat and The Associated PressMay 18, 2026
2 days ago
Employers are quietly pausing 401(k) matches again. The last time this happened was the 2008 recession and Covid
Personal Finance
Employers are quietly pausing 401(k) matches again. The last time this happened was the 2008 recession and Covid
By Courtney Vinopal and HR BrewMay 18, 2026
2 days 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.