![Cellphone with business logo of US investment firm JANA Partners LLC on screen in front of company website. Focus on center-left of phone display Stock Photo - Alamy Cellphone with business logo of US investment firm JANA Partners LLC on screen in front of company website. Focus on center-left of phone display Stock Photo - Alamy](https://c8.alamy.com/comp/2EXTAM4/cellphone-with-business-logo-of-us-investment-firm-jana-partners-llc-on-screen-in-front-of-company-website-focus-on-center-left-of-phone-display-2EXTAM4.jpg)
Cellphone with business logo of US investment firm JANA Partners LLC on screen in front of company website. Focus on center-left of phone display Stock Photo - Alamy
![Exclusive: Rosenstein's JANA promotes Ostfeld to joint managing partner amid strong returns - letter | Reuters Exclusive: Rosenstein's JANA promotes Ostfeld to joint managing partner amid strong returns - letter | Reuters](https://cloudfront-us-east-2.images.arcpublishing.com/reuters/JFYETJYOZFP2HNJ7OSPGWRKDWQ.jpg)
Exclusive: Rosenstein's JANA promotes Ostfeld to joint managing partner amid strong returns - letter | Reuters
![Exclusive: Rosenstein's JANA promotes Ostfeld to joint managing partner amid strong returns - letter | Reuters Exclusive: Rosenstein's JANA promotes Ostfeld to joint managing partner amid strong returns - letter | Reuters](https://cloudfront-us-east-2.images.arcpublishing.com/reuters/NY6HUEYCRNLHBC6NZAT5QF5WFA.jpg)