David A. Westenberg - Wilmer Cutler Pickering Hale and Dorr LLP

David A. Westenberg

Listed in Best Lawyers since 2007

David Westenberg is a partner in the Corporate Practice Group and the Capital Markets Group. He joined the firm in 1983.


Mr. Westenberg has focused on the software, Internet and information technology industries for more than twenty years, guiding numerous start-up clients from formation through venture financing and on to successful acquisitions or IPOs. As outside corporate counsel to many public and private companies, Mr. Westenberg advises clients on a wide variety of corporate, securities, disclosure and governance matters. His transactional experience includes more than 50 IPOs and other capital markets transactions, as well as a large number of venture capital financings and M&A transactions. He is the author of Initial Public Offerings: A Practical Guide to Going Public (Practising Law Institute), a comprehensive yet practical guide to the IPO process that has been hailed for its unprecedented breadth, depth and ease of use and was dubbed the "bible of the IPO market" by The New York Times (The Deal Professor, January 19, 2010).

Harvard UniversityJ.D. 1983

Client Comments

"David is one of the most knowledgeable and prepared attorneys with whom I have worked. He is extremely organized and detailed in his approach to our issues. He has an excellent understanding of our company and can tailor the issues specifically to meet our needs in a cost-efficient manner. He is also quite personable and enjoyable with which to work. I would highly recommend David Westenberg to anyone."

-Terry O'Hara
TargetRx, Inc.

Office Location

60 State Street
Boston, MA 02109
United States

Lawyer of the Year Awards

2015 Lawyer of the Year in Information Technology Law of the Boston Metro Area2012 Lawyer of the Year in Technology Law of the Boston Metro Area
David A. Westenberg has earned a Lawyer of the Year award for 2015!David A. Westenberg has earned a Lawyer of the Year award for 2012!

Practice Areas

Corporate Law (Corporate Compliance, Corporate Finance, Corporate Governance, General Corporate, Information Technology, IPO, Mergers & Acquisitions, Publicly-Held Companies, Securities, Technology, Venture Capital)
Information Technology Law (Hardware, Internet, Software, Technology, Transactions)
Mergers and Acquisitions Law (Emerging Business, Private Placements, Securities, Transactions)
Technology Law (Corporate, Entrepreneurial, Information Technology, Telecommunications, Transactions)
Venture Capital Law