Douglas N. Cogen
415-875-2409
dcogen@fenwick.com
Co-Chair
Mergers & Acquisitions
Partner
Corporate
Douglas N.
Cogen
Douglas N.
Cogen
Douglas N.
Cogen
Partner
Corporate
Co-Chair
Mergers & Acquisitions

One of the nation's leading M&A lawyers, Doug has advised companies on more than $200 billion in mergers, acquisitions and divestitures.

He also advises technology and life sciences clients on strategic and commercial transactions, corporate counseling and governance, securities matters, shareholder activism and takeover defense. He has led Fenwick’s M&A practice for over 20 years and served as a member of the firm’s executive committee for 10 years.

Doug's transactional experience spans more than 25 years and includes cross-border transactions in the software, cybersecurity, internet, life sciences, medical devices, telecommunications, networking, semiconductor, computer hardware and consumer products industries.

He is ranked by Chambers & Partners as among the world’s leading lawyers for Corporate/M&A in both the Global and USA guides. He is also recognized as a Notable Practitioner in the Nationwide Corporate/M&A–Highly Regarded listing. Client testimonials in the Chambers guides have consistently referred to Doug as “strategic”, “innovative”, and an “incredible negotiator who sees the big picture”.

Doug has served as director of Intergovernmental Relations for the New York City Planning Commission. He has also lectured on transactional law at Columbia University Law School, Stanford University Law School and the Stanford Graduate School of Business.​​​​​​​​​​​​​​

[Doug] is a brilliant strategist and adviser on very complicated matters. He is also a remarkable business guru."

Chambers USA

2022 Edition

  • Over 150 deals for Cisco Systems, including the acquisitions of:
    • Scientific-Atlanta for $6.9B
    • NDS Group for $5B
    • Acacia Communications for $4.5B
    • AppDynamics for $3.7B
    • Webex Communications for $3.2B
    • Starent Networks for $2.9B
    • Sourcefire for $2.7B
    • Duo Security for $2.3B
    • BroadSoft for $1.9B
  • VeriSign's $21B merger with Network Solutions
  • Symantec’s $10.7B sale of its Enterprise Security business to Broadcom
  • Concur’s $8.3B acquisition by SAP
  • GitHub's $7.5B acquisition by Microsoft
  • Symantec’s $7.4B sale of the Veritas information management business to The Carlyle Group
  • Excite's $7.2B merger with @Home
  • Symantec's $4.65B merger with Blue Coat
  • NetScreen Technologies' $4.3B merger with Juniper Networks
  • Macromedia's $3.4B merger with Adobe Systems
  • Symantec’s $2.3B acquisition of LifeLock
  • Fitbit's $2.1B acquisition by Google
  • ArcSight’s $1.5B acquisition by Hewlett-Packard
  • Elantec Semiconductor's $1.4B acquisition by Intersil

  • Over 150 deals for Cisco Systems, including the acquisitions of:
    • Scientific-Atlanta for $6.9B
    • NDS Group for $5B
    • Acacia Communications for $4.5B
    • AppDynamics for $3.7B
    • Webex Communications for $3.2B
    • Starent Networks for $2.9B
    • Sourcefire for $2.7B
    • Duo Security for $2.3B
    • BroadSoft for $1.9B
  • VeriSign's $21B merger with Network Solutions
  • Symantec’s $10.7B sale of its Enterprise Security business to Broadcom
  • Concur’s $8.3B acquisition by SAP
  • GitHub's $7.5B acquisition by Microsoft
  • Symantec’s $7.4B sale of the Veritas information management business to The Carlyle Group
  • Excite's $7.2B merger with @Home
  • Symantec's $4.65B merger with Blue Coat
  • NetScreen Technologies' $4.3B merger with Juniper Networks
  • Macromedia's $3.4B merger with Adobe Systems
  • Symantec’s $2.3B acquisition of LifeLock
  • Fitbit's $2.1B acquisition by Google
  • ArcSight’s $1.5B acquisition by Hewlett-Packard
  • Elantec Semiconductor's $1.4B acquisition by Intersil

  • Loxo Oncology’s $8B acquisition by Eli Lilly
  • Cepheid’s $4B acquisition by Danaher​
  • Audentes Therapeutics’ $3B acquisition by Astellas Pharma
  • Amunix’s $1.2B acquisition by Sanofi
  • Agilent Technologies’ $1.5B acquisition of Varian
  • Dermira’s $1.1B acquisition by Eli Lilly​
  • Connetics' $930M merger with Stiefel Laboratories
  • Veracyte’s $600M acquisition of Decipher Biosciences

  • Loxo Oncology’s $8B acquisition by Eli Lilly
  • Cepheid’s $4B acquisition by Danaher​
  • Audentes Therapeutics’ $3B acquisition by Astellas Pharma
  • Amunix’s $1.2B acquisition by Sanofi
  • Agilent Technologies’ $1.5B acquisition of Varian
  • Dermira’s $1.1B acquisition by Eli Lilly​
  • Connetics' $930M merger with Stiefel Laboratories
  • Veracyte’s $600M acquisition of Decipher Biosciences

  • Clif Bar & Company's $2.9B acquisition by Mondelēz
  • Fitbit’s $2.1B acquisition by Google
  • Diamond Foods’ $1.3B acquisition by Snyder’s-Lance
  • Diamond Foods’ $615M acquisition of Kettle Chips
  • Cisco Systems’ $590M acquisition of Pure Digital
  • Cisco Systems’ $500M acquisition of Linksys
  • Diamond Foods’ acquisition of the Pop Secret business from General Mills

  • Clif Bar & Company's $2.9B acquisition by Mondelēz
  • Fitbit’s $2.1B acquisition by Google
  • Diamond Foods’ $1.3B acquisition by Snyder’s-Lance
  • Diamond Foods’ $615M acquisition of Kettle Chips
  • Cisco Systems’ $590M acquisition of Pure Digital
  • Cisco Systems’ $500M acquisition of Linksys
  • Diamond Foods’ acquisition of the Pop Secret business from General Mills
Doug represents companies and boards of directors in significant corporate transactions and governance issues, and sits as co-chair of the firm's M&A practice.
Doug represents companies and boards of directors in significant corporate transactions and governance issues, and sits as co-chair of the firm's M&A practice.

[Doug] is strategic...thinks on his feet and is always looking out for clients' backs but aiming to get a deal done."

Chambers Global

2022 Edition

[Doug] is strategic...thinks on his feet and is always looking out for clients' backs but aiming to get a deal done."

Chambers Global

2022 Edition

Recognition Recognition Recognition

Recognition Recognition Recognition

Recognition
Chambers USA and Chambers Global

2006-2022

Leading lawyer for Corporate/M&A law

Law360

2019

“MVP of the Year” for Technology

The Deal

2018

“Lawyer of the Year” for technology and telecom dealmaking

Legal 500

2018 - 2022

“Hall of Fame”

The Daily Journal

2006, 2013, 2018

Top 100 Attorneys in California

Lawdragon

2021 - 2022

500 Leading Dealmakers in America

  • Leading Lawyer, United States - M&A/Corporate, The Legal 500, 2014 – 2019
  • “Deal Maker of the Year,” Finance Monthly, 2015, 2017
  • Listed, Top 50 Global M&A Lawyers, Global M&A Network, 2014
  • M&A Lawyer of the Year, Global M&A Network, 2010
  • Ranked, M&A, Who’s Who Legal, 2014 – 2022
  • Ranked, Corporate Governance, Who’s Who Legal, 2018 – 2022
  • “Elite Dealmaker,” IFLR1000, 2018
  • Best Lawyers in America, M&A, U.S. News - Best Lawyers, 2011 – 2021
  • Northern California “Super Lawyer,” Super Lawyers, 2006 – 2021

Recognition
Chambers USA and Chambers Global

2006-2022

Leading lawyer for Corporate/M&A law

Law360

2019

“MVP of the Year” for Technology

The Deal

2018

“Lawyer of the Year” for technology and telecom dealmaking

Legal 500

2018 - 2022

“Hall of Fame”

The Daily Journal

2006, 2013, 2018

Top 100 Attorneys in California

Lawdragon

2021 - 2022

500 Leading Dealmakers in America

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