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Wilson Sonsini Adds Seth Flaum in New York to Expand Technology Transactions Department

Addition Reflects the Continued Growth of the New York Office and High Demand for Transactional Experience Among Life Sciences Clients

Wayne Kessler
732.239.9710 Mobile

PALO ALTO, CA (August 25, 2022) – Wilson Sonsini Goodrich & Rosati, the premier provider of legal services to technology, life sciences, and growth enterprises worldwide, announced today that Seth Flaum has joined the firm’s technology transactions department as a partner in the New York office, where he will focus on representing life sciences clients. He brings more than 25 years of broad transactional experience, representing companies in complex strategic transactions and various corporate matters. The addition reflects the continuing growth of Wilson Sonsini’s New York office and ongoing demand for life sciences transactional experience.

Prior to joining the firm, Flaum was executive associate general counsel for Daiichi Sankyo, Inc., a global pharmaceutical company based in Japan, where he advised on an array of strategic transactions and managed a team of lawyers and business professionals responsible for implementing intellectual property and business development transactions.

While at Daiichi Sankyo, Flaum counseled on strategic transactions, structuring, negotiating, and drafting strategic collaboration agreements, licensing agreements, research and development agreements, co-promotion agreements, commercialization agreements, option agreements, material transfer agreements, clinical trial agreements, CRO agreements, distribution agreements, and manufacturing and supply agreements, as well as other types of transactions. He also has experience representing clients in public and private M&A transactions; conducting due diligence for all transactions, including licensing and M&A transactions; and advising on antitrust issues and filings, FINRA inquiries, SEC filings, and corporate governance matters.

Before joining Daiichi Sankyo in 2006 as a corporate attorney for administrative and commercial operations, Flaum worked as a senior associate at a law firm in New York from 2002 to 2006. Previously, he served as general counsel at H&H Bagels from 1997 to 2002. He was also corporate counsel at Thompson Medical Company and Slim Fast Foods Company, and started his legal career as an associate at a law firm based in Rockville, Maryland.

“The healthy business activity in the U.S. and globally among life sciences companies and investors means that clients are seeking deal-making experience, including expertise with R&D agreements, collaborations, and other sophisticated transactions,” said Doug Clark, managing partner at Wilson Sonsini. “With his 16-plus years of in-house experience at a global pharmaceutical company, Seth’s broad transactional, IP, and corporate experience makes him a valuable resource for the firm’s life sciences clients. We’re pleased to welcome him to the firm.”

Wilson Sonsini’s life sciences technology transactions practice is an innovative resource aimed at providing start-up and emerging life sciences companies with insights, capabilities, and strategies to help them thrive and address some of their most challenging issues, including partnering, financing, operations, and commercialization.

The firm’s life sciences practice has grown to include more than 275 professionals, including attorneys, patent agents, and scientific advisors. A substantial number of the firm’s practitioners have advanced degrees in biology, chemistry, engineering, or other scientific fields, and many of them have experience working in laboratory, medical, or research settings. The team also includes attorneys who, like Flaum, have served as in-house legal counsel for major life sciences companies.

“I look forward to bringing my extensive transactional experience to Wilson Sonsini and working with so many outstanding attorneys, including members of the firm’s technology transactions team, whom I’ve come to know during the course of my career,” said Flaum. “I’m excited about the opportunity to continue working with innovative life sciences clients and collaborating with the entire team in New York to help the firm expand its client base in various life sciences markets on the East Coast.”

Flaum earned his J.D. from Loyola Law School in 1994, and a B.S. in finance from New York University Leonard N. Stern School of Business. He is admitted to practice in New York and New Jersey.

About Wilson Sonsini Goodrich & Rosati
For more than 60 years, Wilson Sonsini’s services and legal disciplines have focused on serving the principal challenges faced by the management and boards of directors of business enterprises. The firm is nationally recognized as a leading provider to growing and established clients seeking legal counsel to complete sophisticated corporate and technology transactions; manage governance and enterprise-scale matters; assist with intellectual property development, protection, and IP-driven transactions; represent them in contested disputes; and/or advise them on antitrust or other regulatory matters. With deep roots in Silicon Valley, Wilson Sonsini has offices in 18 technology and business hubs worldwide. For more information, please visit

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