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6.04.26
Wilson Sonsini Practices, Attorneys Recognized in 2026 Chambers USA Guide
The 2026 Chambers USA guide has recognized Wilson Sonsini Goodrich & Rosati as a leading law firm in 44 geography-specific practice categories and named 87 Wilson Sonsini attorneys among the best in their fields. This year, the firm received four new practice area rankings, including in the nationwide National Security and Capital Markets: Convertible Debt categories, and three improved practice area rankings.
Newsletters
1.08.26
Litigation Trends to Watch in 2026
Entering 2026, Wilson Sonsini litigators see a landscape defined by AI driven disputes, continued tightening of patent review standards, renewed securities and governance litigation, stronger consumer and influencer enforcement, and escalating Telephone Consumer Protection Act (TCPA) exposure—trends that require companies to align legal strategy with technical and operational controls.
Client Highlights
1.07.26
Wilson Sonsini Advises OneStream on Acquisition by Hg
On January 6, 2026, OneStream, the leading enterprise finance management platform, announced that it has entered into a definitive agreement to be acquired by Hg, a leading investor in software, services, and data businesses. The all-cash transaction values OneStream at approximately $6.4 billion in equity value. Wilson Sonsini Goodrich & Rosati advised OneStream on this transaction in a continuation of its long-standing advisory relationship with the company, including leading OneStream’s Up-C IPO in July 2024.
News Articles
12.12.25
Greg Watts of Wilson Sonsini Releases Definitive Guide on Directors’ and Officers’ Liability
Gregory Watts, a partner at Wilson Sonsini, sheds light on one of corporate law’s most complex areas in his latest book, Directors' and Officers' Liability: Current Law, Recent Developments, Emerging Issues (Fourth Edition), published by the Practising Law Institute. Written for corporate counsel, private practitioners, and directors themselves, the book provides a comprehensive roadmap through the responsibilities, protections, and potential pitfalls facing directors and officers of public companies, combining current law with recent developments and emerging trends.
News Articles
6.05.25
2025 Chambers USA Guide Recognizes Wilson Sonsini Practices, Attorneys
The 2025 Chambers USA guide has recognized Wilson Sonsini Goodrich & Rosati as a leading law firm in 39 geography-specific practice categories and named 86 Wilson Sonsini attorneys among the best in their fields. This year, the firm received three new practice area rankings, including in the Artificial Intelligence category, and four improved practice area rankings.
Alerts
2.28.25
2025 Environmental and Social Developments
2025 is off to a fast start with several changes in the legal landscape of the environmental and social (E&S) categories of ESG (Environmental, Social, and Governance). This alert highlights key E&S developments thus far in 2025, including executive actions, regulatory updates, state legislation, and proxy advisor and institutional investor guidance.
Client Highlights
8.09.24
Wilson Sonsini Advises Recursion on Definitive Agreement with Exscientia
On August 8, 2024, Recursion and Exscientia announced the companies have entered into a definitive agreement, combining Recursion, a leading clinical stage technology-enabled biotech company decoding biology to industrialize drug discovery, with Exscientia, a technology-driven clinical stage drug design and development company, committed to creating more effective medicines for patients, faster. Wilson Sonsini Goodrich & Rosati advised Recursion on the transaction.
Alerts
7.01.24
U.S. Supreme Court Holds SEC Cannot Use In-House Proceedings When Seeking Civil Penalties for Securities Fraud
On June 27, 2024, the U.S. Supreme Court held in Securities and Exchange Commission v. Jarkesy that the Seventh Amendment to the United States Constitution entitles a defendant to a jury trial when the U.S. Securities and Exchange Commission (SEC) seeks civil penalties for securities fraud. As a result, the SEC must sue in federal court, rather than in the agency’s in-house administrative law court that lacks juries, when it seeks civil penalties for fraud.
News Articles
6.06.24
Wilson Sonsini Practices, Attorneys Named in 2024 Chambers USA Guide
Wilson Sonsini Goodrich & Rosati practices and attorneys were honored in the recently published 2024 edition of Chambers USA: America's Leading Lawyers for Business. This year, the firm was ranked in 36 geography-specific practice categories, while 79 attorneys were honored among the best in their fields.
Alerts
6.08.23
U.S. Supreme Court Closes Door on Objective Reasonableness Defense in Healthcare False Claims Act Cases
On June 1, 2023, the U.S. Supreme Court issued a decision in a consolidated appeal of two healthcare qui tam cases that removes a very powerful defense from defendants’ arsenal in False Claims Act (FCA) cases. In the healthcare space, defendants have often asserted that, where an applicable legal or regulatory standard—e.g., a reimbursement regulation or Local Coverage Determination—is ambiguous and open to more than one objectively reasonable interpretation, the required FCA element of scienter (a knowing state of mind) cannot be found as long as defendants’ actions were consistent with one reasonable interpretation of the standard. The Supreme Court’s decision closes the door on this defense, eliminating one basis for a defendant to establish that a submission of a false claim to the government did not violate the FCA because it was not made “knowingly.” The decision nevertheless leaves the window open for defendants to assert a defense based on their sincerely held subjective belief at the time claims were made that their interpretation of the applicable standard was correct. This will have an immediate impact on healthcare FCA cases.
Alerts
6.05.23
U.S. Supreme Court Rejects Ninth Circuit Expansion of Section 11 Standing
On June 1, 2023, the U.S. Supreme Court issued its decision in Slack Technologies, LLC v. Pirani1 vacating a Ninth Circuit decision2 that had extended the scope of Section 11 of the Securities Act of 1933, which provides a cause of action for material misstatements or misleading omissions in a registration statement. A divided panel of the Ninth Circuit had held that standing to bring a claim was not limited to those who could trace the shares they had purchased to those that had been registered as part of a direct listing. In a unanimous opinion, the Supreme Court vacated the Ninth Circuit’s decision, holding that Section 11 requires a plaintiff to plead and prove that the purchased securities are traceable to the challenged registration statement.
News Articles
6.01.23
2023 Chambers USA Guide Recognizes Wilson Sonsini Practices and Attorneys
The recently published 2023 edition of Chambers USA: America's Leading Lawyers for Business recognized numerous Wilson Sonsini Goodrich & Rosati practices and attorneys. This year, the firm was ranked in 35 geography-specific practice categories, while 79 attorneys were honored among the best in their fields.