Ora Grinberg

Associate, Tax  

Mountain View 650.335.7845


Ora Grinberg focuses her practice on U.S. corporate and international taxation. She represents clients in tax planning and tax controversy matters, with an emphasis on international tax planning, cross-border and domestic mergers, and acquisitions and restructurings. Her clients come from a diverse set of industries and geographic jurisdictions (including both domestic and foreign entities) and range in size from startups to large Fortune 500 companies.

Ora was awarded the inaugural Euromoney’s Americas Rising Stars Award for Best in Tax and Tax Disputes in 2018. Ora also appears in Euromoney’s 2017 and 2018 Expert Guides: Rising Stars, in the Tax category. She was also recognized by California Super Lawyers as a Rising Star in 2018.

Ora has substantial experience representing buyers and sellers in domestic and cross-border merger and acquisition transactions. She regularly represents serial acquirers and has extensive experience advising on sophisticated corporate transactions. In some noteworthy transactions, Ora represented:

  • Imperva in its $2.1 billion acquisition by Thoma Bravo
  • Cloudera in its $5.2 billion merger of equals with Hortonworks
  • Cray in its $1.3 billion acquisition by Hewlett Packard Enterprise
  • Cisco in numerous transactions, including its $3.7 billion acquisition of AppDynamics (for which Fenwick & West was honored with the M&A Atlas Global Tech Deal of the Year award), its $2.35 billion acquisition of Duo Security, its $1.9 billion acquisition of Broadsoft (for which Fenwick was honored with the M&A Atlas Technology M&A Deal of the Year award), its $1.4 billion acquisition of Jasper Technologies, its $700 million acquisition of Acano and the sale of its Service Provider Video Software Solutions Business to Permira
  • Symantec in the $7.4 billion sale of its worldwide information management business (for which Fenwick was honored with the M&A Atlas Global Private Equity Deal of the Year award)
  • Symantec in the sale of its worldwide Website Security Business by DigiCert
  • Diamond Foods in its approximately $1.9 billion acquisition by Snyder’s-Lance
  • Shutterfly in its $825 million acquisition of Lifetouch

Ora regularly speaks at conferences for professional tax groups and frequently leads workshops on Business Law Basics for new entrepreneurs and small businesses. Her recent publications include, “In with the New – In with the Old: TJCA Allows for Full Expensing of New and Old Depreciable Property; Lower Tax Rates for Certain Sales to Foreign Buyers​” (Legal Media Group’s Expert Guides: Rising Stars, 2018). She regularly provides pro bono services to various nonprofit organizations and low-income individuals. For the last 8 years, Ora has volunteered for Tax-Aid as a tax expert and has served as co-site manager for the last 7 years.

During law school, Ora served as a supervising and senior executive editor for the Berkeley Business Law Journal and was a recipient of the Berkeley Law and Economics Fellowship.​​