Private company

JANA Partners

Logo: https://www.crunchbase.com/organization/jana-partners, Non-free logo, via Wikipedia3

American activist investment firm

JANA Partners LLC (JANA or JANA Partners) is an investment manager specializing in event-driven investing. It was founded in 2001 by Barry Rosenstein.2 It employed 100 people.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

2001Founded1

See how the biggest companies compare on our leaderboards

JANA Partners LLC (JANA or JANA Partners) is an investment manager specializing in event-driven investing. It was founded in 2001 by Barry Rosenstein.2

Corporate structure

JANA Partners sits at the top of its group. 276 entities, 47 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • JANA Partners
    • Adobe Subsidiary · San Jose, California, United States
      • Adbemx Software, S. de R.L. de C.V. Subsidiary · Mexico
      • Adobe (Thailand) Company Limited Subsidiary · Thailand
      • Adobe Assets, LLC Subsidiary · Delaware, United States
      • Adobe Canada Services Corporation Subsidiary · Canada
      • Adobe Colombia SAS Subsidiary · Colombia
      • Adobe Corporate LLC Subsidiary · Delaware, United States
      • Adobe Creative Cloud Subsidiary
      • Adobe Development ARM LLC Subsidiary · Armenia
      • Adobe Holdings LLC Subsidiary · Delaware, United States
      • Adobe Labs, Inc. Subsidiary · Delaware, United States
      • Adobe Research (Schweiz) AG Subsidiary · Switzerland
      • Adobe Software (Shanghai) Company Limited Subsidiary · China
      • ADOBE SOFTWARE TRADING COMPANY LIMITED Subsidiary · Dublin, Ireland
        • ADOBE SYSTEMS CANADA INC. Subsidiary · Ottawa, Ontario, Canada
        • ADOBE SYSTEMS SOFTWARE IRELAND LIMITED Subsidiary · Saggart, Ireland
      • Adobe Systems (Schweiz) GmbH Subsidiary · Switzerland
      • Adobe Systems Belgium BV Subsidiary · Belgium
      • ADOBE SYSTEMS BENELUX B.V. Subsidiary · Amsterdam, Netherlands
      • Adobe Systems Brasil Limitada Subsidiary · Brazil
      • Adobe Systems Canada Inc. Subsidiary · Canada
      • Adobe Systems Danmark ApS Subsidiary · Denmark
      • Adobe Systems Europe Limited. Subsidiary · United Kingdom
      • Adobe Systems Federal LLC Subsidiary · Delaware, United States
      • Adobe Systems France SAS Subsidiary · France
      • Adobe Systems Hong Kong Limited Subsidiary · Hong Kong
      • Adobe Systems Iberica SL Subsidiary · Spain
      • ADOBE SYSTEMS INDIA PRIVATE LIMITED Subsidiary · Noida, India
      • and 27 more
    • Apple Inc. Subsidiary · Cupertino, California, United States
    • Home Depot Supply Subsidiary · Atlanta, Georgia, United States
      • Core & Main Subsidiary · St Louis, Missouri, United States
    • Jack in the Box Subsidiary · San Diego, California, United States
      • Del Taco Holdings, Inc. Subsidiary · Delaware, United States
      • Del Taco LLC Subsidiary · California, United States
      • Different Rules, LLC Subsidiary · Delaware, United States
      • DT/COSTA MESA RESTAURANT CO. Subsidiary · California, United States
      • F&C Restaurant Holding Co. Subsidiary · Delaware, United States
      • Jack in the Box Franchisee Finance, LLC Subsidiary · Delaware, United States
      • Jack in the Box Franchisee Relief Financing, LLC Subsidiary · Delaware, United States
      • Jack in the Box Funding, LLC Subsidiary · Delaware, United States
      • Jack in the Box Properties, LLC Subsidiary · Delaware, United States
      • Jack in the Box SPV Guarantor, LLC Subsidiary · Delaware, United States
      • JIB Stored Value Cards, LLC Subsidiary · Virginia, United States
      • Kerry Foods International LLC Subsidiary · California, United States
      • Sagittarius Restaurants LLC Subsidiary · Delaware, United States
    • Pinnacle Foods Subsidiary · Parsippany, New Jersey, United States
    • Teva Pharmaceutical Industries Ltd. Subsidiary · Tel Aviv, Israel
      • Teva Czech Industries 100% · Opava, Czechia
      • Cephalon Subsidiary · Frazer
      • Teva Pharmaceuticals (Australia) Subsidiary · Macquarie Park, Australia
      • Teva Pharmaceuticals (France) Subsidiary · Courbevoie, France
      • Teva Pharmaceuticals (Hungary) Subsidiary · Budapest, Hungary
      • Teva Pharmaceuticals (Ireland) Subsidiary · Dundalk, Ireland
      • Teva Pharmaceuticals (United States) Subsidiary · North Wales, United States
      • Teva Takeda Pharma Subsidiary · Nakamura-ku, Japan
      • Actavis Group PTC ehf Subsidiary · Iceland
      • ACTAVIS PHARMA DEVELOPMENT CENTRE PRIVATE LIMITED Subsidiary · Mumbai, India
      • Actavis Pharma Holding 4 ehf Subsidiary · Iceland
      • Arrow International Limited Subsidiary · Malta
      • IVAX International Subsidiary
      • Mepha Pharma AG Subsidiary · Switzerland
      • Merckle GmbH Subsidiary · Germany
      • Norton Healthcare Limited Subsidiary · United Kingdom
      • Pliva Hrvatska d.o.o. Subsidiary · Croatia
      • Ratiopharm GmbH Subsidiary · Germany
      • Salomon, Levin & Elstein Ltd. Subsidiary · Israel
      • TAPI Czech Industries Subsidiary · Czechia
      • TAPI NL B.V. Subsidiary · Netherlands
      • Teva Actavis Holding B.V. Subsidiary · Netherlands
      • Teva Biotech GmbH Subsidiary · Germany
      • Teva Canada Limited Subsidiary · Canada
      • Teva Capital Services Switzerland GmbH Subsidiary · Switzerland
      • and 15 more
    • Tiffany & Co. Subsidiary · New York, New York, United States
      • TCO (NL) Logistics B.V. Subsidiary · Parsippany, New Jersey, United States
      • Tiffany & Co. Foundation Subsidiary
    • AerCap Stake · 8.1% · Dublin, Ireland
      • AERCAP IRELAND ASSET INVESTMENT 1 LIMITED Subsidiary · Shannon, Ireland
      • AERCAP IRELAND FUNDING 1 LIMITED Subsidiary · Shannon, Ireland
      • AERCAP IRELAND LIMITED Subsidiary · Shannon, Ireland
        • AERCAP IRELAND CAPITAL DESIGNATED ACTIVITY COMPANY Shannon, Ireland
          • 2 more
        • AERCAP LEASING 3034 LIMITED Subsidiary · Shannon, Ireland
        • AerFi Sverige AB Subsidiary · Stockholm, Sweden
        • AERFUNDING 1 LIMITED Subsidiary · Hamilton, Bermuda
        • AERVENTURE EXPORT LEASING LIMITED Subsidiary · Shannon, Ireland
        • ANDES AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • BALLYFIN AVIATION LIMITED Subsidiary · Shannon, Ireland
        • BURGUNDY AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • CASH MANAGER LIMITED Subsidiary · Shannon, Ireland
        • CELTAGO FUNDING LIMITED Subsidiary · Shannon, Ireland
        • CELTAGO II FUNDING LIMITED Subsidiary · Shannon, Ireland
        • CLOUDFUNDING II LIMITED Subsidiary · Shannon, Ireland
        • CLOUDFUNDING LIMITED Subsidiary · Shannon, Ireland
        • CUTTLEFISHFUNDING LIMITED Subsidiary · Shannon, Ireland
        • FANSIPAN AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • FLOTLEASE MSN 973 LIMITED Subsidiary · Shannon, Ireland
        • FLYFUNDING LIMITED Subsidiary · Shannon, Ireland
        • GEMINISTREAM AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • GLIDE FUNDING LIMITED Subsidiary · Shannon, Ireland
        • HARMONIC AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • IRIDIUM FUNDING LIMITED Subsidiary · Shannon, Ireland
        • JADE AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • JASMINE AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • JASPER AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • LEOSTREAM AIRCRAFT LEASING LIMITED Subsidiary · Shannon, Ireland
        • and 17 more
      • AERCAP LEASING 946 LIMITED Subsidiary · Shannon, Ireland
      • BALLYFIN AVIATION II LIMITED Subsidiary · Shannon, Ireland
      • CELESTIAL AVIATION SERVICES LIMITED Subsidiary · Shannon, Ireland
      • FODIATORFUNDING DESIGNATED ACTIVITY COMPANY Subsidiary · Shannon, Ireland
      • GLADIUS FUNDING LIMITED Subsidiary · Shannon, Ireland
      • VERDE AIRCRAFT FINANCE LIMITED Subsidiary · Shannon, Ireland

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What JANA Partners reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.1

The story

Founded by Barry Rosenstein in 2001.1

Leadership

Who has led JANA Partners, and when. Pick a name to see everywhere that person has worked.

Board members and other officers (1)

Subsidiaries and ownership

Also owns

From Wikidata.1

Timeline

  1. 2001Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3