Continued Growth at Cooley’s Palo Alto Office
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Summary: A highly experienced partner has been added to the mergers and acquisition team in the Palo Alto office of Cooley.

The mergers and acquisition team at Cooley has welcomed a new partner to their group in the Palo Alto office. Steven Tonsfeldt will be joining the firm from O’Melveny & Myers. Tonsfeldt was the chair of the global M&A and private equity practice at O’Melveny & Myers.


At Cooley, Tonsfeldt will be a great addition to their global mergers and acquisitions practice, bringing over 25 years of experience in the Silicon Valley. He has worked with clients across the country and across borders through M&A transactions, hostile takeovers, defense planning, and contested transactions. Chambers USA has recognized him as a leader in the Corporate/M&A area for over ten years.

Cooley M&A practice head Barbara Borden says, “Steve is a superb and seasoned M&A lawyer who is known and admired throughout our industry. Cooley is delivering record results across the corporate spectrum: in 2015 we handled a total of 187 M&A transactions with an aggregate deal value of $44 billion. Steve will be a tremendous addition to our M&A team, and a great asset to clients seeking sophisticated advice on their most critical transactions.”

Tonsfeld earned his J.D. from the University of California, Berkeley and a BBA from the University of Iowa in Accounting.

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Cooley has over 900 lawyers in 12 offices throughout the U.S., China, and Europe.




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