Warren T. Lazarow


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Warren Lazarow is nationally and internationally recognized as one of the market’s leading advisors to technology-focused companies and investors. Warren primarily focuses his practice on the corporate representation of public and private technology companies, venture capital and private equity firms, and investment banks. He is a boardroom-level advisor who frequently serves as outside general counsel, helping management teams, boards of directors, and investors shape and execute their business strategies, and providing experienced counsel on legal issues ranging from day-to-day corporate and regulatory matters to high-stakes strategic matters. Over the course of his career, Warren has handled more than 200 M&A transactions ranging from US$1 million to US$10 billion; more than 100 public offerings of equity, debt, and convertible securities, raising more than US$2.6 billion; and more than 1,000 private financings spanning initial seed financings, venture capital financings, growth capital financings, private equity financings, and recapitalizations.

Warren served as Chair of O’Melveny’s Global Corporate Department from September 2010 to March 2017 and continued as the Department’s Co-Chair until February 2021, marking more than a decade of leadership in total. He is currently a member of the Firm’s Executive Committee. Warren has been chosen four times for inclusion on Forbes Magazine’s prestigious “Midas List” of the technology industry’s Top 100 Dealmakers Worldwide. Law firm rankings publications, including Chambers & Partners (USA and Global guides), Legal 500, Global Counsel, IFLR, and Practical Law Company, have awarded him high rankings in listings of top lawyers for “Corporate/M&A,” “Capital Markets,” “Communications/Technology,” “Venture Capital and Emerging Companies,” and “Private Equity - Buyouts: $10 billion and above.” Legal 500, in its “Venture Capital and Emerging Companies” section, describes Warren as “highly recommended by clients in the [technology] space for his ‘truly significant experience’” and the “key person in the [industry] for all manner of corporate legal issues.” Chambers and Partners notes that Warren is “praised for his practical and intelligent advice” and that he is “particularly known for his representation of technology companies in the emerging companies space.” Numerous business and legal media outlets, including PE Hub Wire, FeedBlitz, The Deal, TechCrunch, The Daily Deal, Private Equity Law360, Term Sheet, The Recorder, The New York Times, The Wall Street Journal, BusinessWeek, Silicon Valley Business Journal, MSNBC, VentureBeat and CNN, have quoted Warren or covered transactions on which he has worked. He has spoken on issues impacting technology companies before audiences throughout the US, Japan, China, Singapore, Indonesia, Korea, Taiwan, Israel, and Europe.



  • French
  • Hebrew

Honors & Awards


  • Brooklyn Law School Annual Alumni Association, Co-Alumni of the Year Award, 2008

Professional Recognition

  • Recognized by Best Lawyers® for Venture Capital Law in Menlo Park, CA (2022-2023); Warren has been listed in Best Lawyers® since 2012
  • Recognized by IFLR1000® (2019 - 2022) as a Notable Practitioner in Technology & Telecommunications and Private Equity
  • Named by The Legal 500 US to its list of “Recommended Lawyers” (2008-2020)
  • Ranked on the ICFM list of top 500 leading lawyers in the world (2015)
  • Named by California Law Business to its list of “California’s Top 25 Lawyers Under the Age of 45”
  • Named by San Jose Magazine to its list of “Top Lawyers in the Silicon Valley”
  • Named by Global Counsel to its list of “Highly Recommended Lawyers for Private Equity/Venture Capital”
  • Named by Madison Who’s Who Among Executives and Professionals to its “Honors Edition”


Bar Admissions

  • California
  • New York


  • Brooklyn Law School, J.D., 1986: Notes Editor, Brooklyn Law Review; American Jurisprudence Award in Civil Procedure; Morris Scholarship
  • Princeton University, Princeton School of Public and International Affairs, A.B., 1982: cum laude

Professional Activities


  • American Bar Association
  • New York State Bar Association
  • California Bar Association

Board of Directors

  • Zyzzyva, a non-profit dedicated to fostering a lively community around the contemporary arts in the San Francisco Bay Area

Board of Governors

  • University Cottage Club, Princeton University


  • “The SEC’s Regulation of the Financial Press: The Legal and Constitutional Implications of the Misappropriation Theory,” Brooklyn Law Review
  • “Technology M&A Case Strategies: Acquisition of Clear Shape Technologies by Cadence Design Systems,” Aspatore Books

Press Releases

O’Melveny Advises Zeda on US$52 Million Series B Funding

March 7, 2023

O’Melveny Advises Roostify in Acquisition by CoreLogic

February 22, 2023

O’Melveny Advises Acceldata in US$50 Million Series C Funding

February 9, 2023

O’Melveny Advises Fluence Analytics in Acquisition by Yokogawa Electric

February 2, 2023

Eighty Five O’Melveny Lawyers Recognized by Best Lawyers in America ® 2023

August 24, 2022

O’Melveny Represents Eridan Communications, Inc. in US$46 Million Series B Funding

May 16, 2022

O’Melveny Represents Underwriters in SolarEdge Stock Offering

March 18, 2022

O’Melveny Advises Menlo Microsystems in US$150 Million Funding Round

March 9, 2022

O’Melveny Advises Earnipay in Series Seed Preferred Financing

February 17, 2022

O’Melveny Advises Blackstone Products in US$900 Million Business Combination with Ackrell SPAC Partners to Make Blackstone a Public Company

December 23, 2021

O’Melveny Advises Lantronix in Underwritten Offering of Common Stock

November 23, 2021

More than 50 O’Melveny Lawyers Recognized by Best Lawyers in America® 2022

August 20, 2021

O’Melveny Advises Spectro Cloud in $20 Million Series A Funding Round

July 29, 2021

O’Melveny Advises Lantronix in Agreement to Acquire Transition Networks and Net2Edge from Communications Systems Inc. for Up to US$32 Million

April 29, 2021

In the News

Global Legal Chronicle: CoreLogic’s Acquisition of Roostify

February 24, 2023

Global Legal Chronicle: Acceldata’s $50 Million Series C Funding Round

February 11, 2023

Global Legal Chronicle: Yokogawa Electric’s Acquisition of Fluence Analytics

February 7, 2023

Global Legal Chronicle: SolarEdge Technologies, Inc.’s SolarEdge Stock Offering

March 25, 2022

Law360: Don’t Miss It: Davis Polk, Paul Weiss Guide Week’s Hot Deals

March 11, 2022

Global Legal Chronicle: Menlo Microsystems’ US$150 Million Funding Round

March 11, 2022

ICLG: African Fintech Concludes USD 4 Million Series A Round

February 22, 2022

Law.com: Morning Minute: The News and Analysis You Need to Start Your Day

December 30, 2021

Private Equity Wire: O’Melveny Advises Spectro Cloud in US$20m Series A Funding

July 30, 2021

Mergermarket: Direct listings attract interest as market awaits primary pioneer

April 5, 2021

Alerts and Publications