• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
LeadershipManage This!

Who had a better day: Ellen Kullman or Jack Dorsey?

By
Jennifer Reingold
Jennifer Reingold
Down Arrow Button Icon
By
Jennifer Reingold
Jennifer Reingold
Down Arrow Button Icon
October 6, 2015, 11:59 AM ET
Photo courtesy: Paul Morigi

Oct. 5 was a big news day for corner office inhabitants. Yesterday morning, Jack Dorsey, Twitter’s prodigal son, made a triumphant return to the helm of the company he cofounded before being booted out as CEO in 2008 after a rocky tenure. Despite having another fulltime job as the CEO of soon-to-go-public Square, Dorsey was seen by Twitter’s board as the best choice for the struggling social media company, which had not had a chief executive since Dick Costolo stepped down in July. Said Twitter director Peter Currie during yesterday’s announcement: “Jack has been meeting and surpassing expectations” in his three months as interim CEO.

By the end of the day, a different—but equally high profile—CEO was out: Ellen Kullman, who had run DuPont since 2009 and who had recently become one of the only sitting CEOs to beat back a challenge from activist investor Nelson Peltz. Whether Kullman, #5 on Fortune’s Most Powerful Women list, quit or was ousted depends on who you ask, but it’s clear that she had run her course at the company; her “retirement” announcement had no official successor, she’s not moving up to become chairman, and she is leaving in less than two weeks—hardly a smooth handover.

Bad news for Kullman, great news for Dorsey, right?

Not so fast. Yes, it’s true that the market has judged both moves as positive for their companies: Twitter’s stock is up about 6% since yesterday morning, while DuPont’s has jumped an amazing 11% since last night’s surprise announcement. Observes my colleague Shawn Tully about DuPont: “When was the last time you saw a company report lowered guidance and then have the stock rise by 11%?”

But success in the C-suite is as much about expectations as it is about reality. Kullman may end up having left at the right time, while Dorsey must bear the burden of expectations that he is a changed man, and exactly the savior the company needs. He has only one way to go, and it’s probably not up.

Let’s start with DuPont. The task for whomever replaces Kullman is, to put it mildly, gargantuan. Either DuPont must do what Peltz advocated and break itself up, or it must entirely rethink its cost structure, which means cost cuts and job losses. It is safe to say that no CEO takes the job with hopes of shrinking, rather than growing, but that is exactly what DuPont faces. (Needless to say, DuPont’s new interim CEO, Ed Breen, is best known for having dismantled what Dennis Kozlowski had previously assembled at Tyco.)

Kullman, for her part, leaves as something of a folk hero for standing up to Peltz, if not as a very successful CEO. At just 59, she will doubtless have many other career options available to her (for one, she could certainly make a living in the now-burgeoning business of anti-activist defenses).

And Twitter? The company has long struggled with its raison d’etre. Although Dorsey is undoubtedly good for morale, Twitter’s problems go far beyond deciding whether or not to expand the 140 character rule. His job will be grueling at best and comes as he prepares to take his second company, Square, public. One misstep in either company will undoubtedly bring the potential of class action lawsuits, and possibly even activist investors.

I’m betting Kullman’s morning went a lot more smoothly than Dorsey’s did.

About the Author
By Jennifer Reingold
See full bioRight Arrow Button Icon

Latest in Leadership

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 Leadership

As hantavirus outbreak unfolds, the CDC is missing in action, experts say. ‘I’m very sorry to say that we are not prepared’
PoliticsHealth
As hantavirus outbreak unfolds, the CDC is missing in action, experts say. ‘I’m very sorry to say that we are not prepared’
By Mike Stobbe and The Associated PressMay 9, 2026
13 hours ago
Photo of Zak Brown
SuccessSports
Before the McLaren CEO got a $50 million payday from his team’s F1 championship, he was a high-school dropout who got his start on Wheel of Fortune
By Sasha RogelbergMay 9, 2026
14 hours ago
‘Employers are increasingly turning to degree and GPA’ in hiring: Recruiters retreat from ‘talent is everywhere,’ double down on top colleges
Future of WorkEducation
‘Employers are increasingly turning to degree and GPA’ in hiring: Recruiters retreat from ‘talent is everywhere,’ double down on top colleges
By Jake AngeloMay 9, 2026
14 hours ago
Protester at Jeffrey Epstein hearing
LawJeffrey Epstein
How Jeffrey Epstein leveraged a prestigious U.N.-affiliated nonprofit—and the Gates Foundation—to control women and keep them in his orbit
By Jessica MathewsMay 9, 2026
15 hours ago
Red flag test: former CEO explains why he rejects job candidates who say they can start right away
SuccessThe Interview Playbook
Red flag test: former CEO explains why he rejects job candidates who say they can start right away
By Orianna Rosa RoyleMay 9, 2026
16 hours ago
Qualcomm’s CEO is working with ‘pretty much all’ major AI players on top-secret devices—and powering OpenAI’s first push into hardware
AIQualcomm
Qualcomm’s CEO is working with ‘pretty much all’ major AI players on top-secret devices—and powering OpenAI’s first push into hardware
By Eva RoytburgMay 9, 2026
17 hours ago

Most Popular

'Employers are increasingly turning to degree and GPA' in hiring: Recruiters retreat from ‘talent is everywhere,’ double down on top colleges
Future of Work
'Employers are increasingly turning to degree and GPA' in hiring: Recruiters retreat from ‘talent is everywhere,’ double down on top colleges
By Jake AngeloMay 9, 2026
14 hours ago
Ted Cruz says the quiet part out loud: Trump accounts are Social Security personal accounts as GOP senator reveals 'dirty little secret'
Politics
Ted Cruz says the quiet part out loud: Trump accounts are Social Security personal accounts as GOP senator reveals 'dirty little secret'
By Jason MaMay 9, 2026
10 hours ago
You're probably safe from the Hantavirus outbreak, but here's what you absolutely must not do, experts say
Politics
You're probably safe from the Hantavirus outbreak, but here's what you absolutely must not do, experts say
By Catherina GioinoMay 8, 2026
1 day ago
A Michigan farm town voted down plans for a giant OpenAI-Oracle data center. Weeks later, construction began
Magazine
A Michigan farm town voted down plans for a giant OpenAI-Oracle data center. Weeks later, construction began
By Sharon GoldmanMay 6, 2026
4 days ago
California farmers must destroy 420,000 peach trees after Del Monte closes its canneries and cancels more than $550 million in long-term contracts
North America
California farmers must destroy 420,000 peach trees after Del Monte closes its canneries and cancels more than $550 million in long-term contracts
By Sasha RogelbergMay 7, 2026
2 days ago
The CEO of Maersk, which ships 14% of everything you buy, said the Iran war is adding $500 million in monthly costs it's trying not to pass down
Energy
The CEO of Maersk, which ships 14% of everything you buy, said the Iran war is adding $500 million in monthly costs it's trying not to pass down
By Sasha RogelbergMay 8, 2026
1 day 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.