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Corporate Governance Litigation

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As part of Wilson Sonsini's multi-discipline approach, the firm's comprehensive Corporate Governance practice also encompasses litigation—representing companies, corporate officers, boards of directors, special board committees, and financial institutions and investors—in complex contested governance matters including M&A litigation, corporate control disputes, shareholder litigation demands, and derivative lawsuits. Wilson Sonsini also has an experienced team that represents special litigation and demand committees in conducting investigations of alleged misconduct and breaches of fiduciary duty.

M&A Litigation

Wilson Sonsini's governance litigation team represents companies, officers, directors, and other third parties involved in mergers and acquisitions confronted by shareholder claims and other legal maneuvers aimed at preventing or enforcing transactions. Our team works closely with clients—companies (both as acquirors and targets), investors, private equity firms, hedge funds and other stakeholders—throughout the course of a transaction.

Representation at All Deal Stages

At different stages of a given transaction, we advise clients on best practices for process-based issues that often arise in litigation, including on potential conflicts of interest, change-of-control obligations, disclosure requirements, and other key steps or milestones. The team's experience in contested matters and deal-related litigation includes, for example:

  • "Busted-deal" disputes
  • Corporate takeover-related disputes
  • Going-private transactions
  • Fiduciary duty claims
  • Poison pill and other defensive-measures
  • Post-deal earnout disputes
  • Proxy battles

Key Delaware Expertise

Wilson Sonsini also has a recognized and renowned team of Delaware law experts, which gives our clients an important and strategic advantage for three key reasons: (a) the sheer number of companies incorporated under Delaware law; (b) Delaware law governs the fiduciary duties of boards of directors of those companies; and (c) Delaware law influences corporate law in numerous other states in which we also represent clients involved in deal-related litigation.

Also of strategic importance to our clients is our team's proven track record of achieving favorable resolutions in M&A disputes litigated in the Delaware Court of Chancery and throughout the U.S. , including both state and federal jurisdictions.

Though the majority of our experience involves publicly held corporations, Wilson Sonsini's M&A litigators also represent clients in contested matters arising out of private company deals.

Special Litigation and Demand Committees

With the increase in derivative litigation in recent years, boards of directors are increasingly looking to independent committees formed to consider stockholder litigation demands and derivative litigation. Wilson Sonsini has deep experience advising demand review committees (formed to consider litigation demands made on the company) and special litigation committees (formed where derivative litigation has been filed and the board is deemed interested).

The Heightened Value of our Experience

 Wilson Sonsini advises demand review committees (formed to consider litigation demands made on the company) and special litigation committees (formed where derivative litigation has been filed and the board is deemed interested).

Our experienced team stays abreast of the key issues and case law related to special litigation and demand committees, which allows us to provide ongoing, immediate, and business-forward advice to clients. Also, because Delaware courts have continued to define and develop specific procedures and preferences for addressing litigation involving special committees, our team’s experience positions us to represent clients where, as well as when, clients need us.

In matter after matter, our team has applied its high level of experience to quickly assess underlying facts, help clients address complicated fiduciary duty issues, and follow a process that is the best interest of the corporation—and one that can withstand rigorous judicial review. See the above tab for a list of select matters.

A Team Anchored by Seasoned Litigators and Former Jurists

Wilson Sonsini's experienced team includes proven litigators and former jurists who have represented clients in disputes involving complicated and potentially business-threatening claims brought by shareholder activists, serial plaintiff counsel firms, and other aggressive parties. For example, our team includes William (Bill) B. Chandler, III, the former Chancellor on the Court of Chancery, and Joseph R. Slights III, the former Vice Chancellor on the Court of Chancery, who bring their wealth of knowledge from their time on the bench to these matters. The team also includes Katherine Henderson and Brad Sorrels—both of whom lead the firm's Corporate Governance Litigation practice. To view the complete team, click here.

Overview

As part of Wilson Sonsini's multi-discipline approach, the firm's comprehensive Corporate Governance practice also encompasses litigation—representing companies, corporate officers, boards of directors, special board committees, and financial institutions and investors—in complex contested governance matters including M&A litigation, corporate control disputes, shareholder litigation demands, and derivative lawsuits. Wilson Sonsini also has an experienced team that represents special litigation and demand committees in conducting investigations of alleged misconduct and breaches of fiduciary duty.

M&A Litigation

Wilson Sonsini's governance litigation team represents companies, officers, directors, and other third parties involved in mergers and acquisitions confronted by shareholder claims and other legal maneuvers aimed at preventing or enforcing transactions. Our team works closely with clients—companies (both as acquirors and targets), investors, private equity firms, hedge funds and other stakeholders—throughout the course of a transaction.

Representation at All Deal Stages

At different stages of a given transaction, we advise clients on best practices for process-based issues that often arise in litigation, including on potential conflicts of interest, change-of-control obligations, disclosure requirements, and other key steps or milestones. The team's experience in contested matters and deal-related litigation includes, for example:

  • "Busted-deal" disputes
  • Corporate takeover-related disputes
  • Going-private transactions
  • Fiduciary duty claims
  • Poison pill and other defensive-measures
  • Post-deal earnout disputes
  • Proxy battles

Key Delaware Expertise

Wilson Sonsini also has a recognized and renowned team of Delaware law experts, which gives our clients an important and strategic advantage for three key reasons: (a) the sheer number of companies incorporated under Delaware law; (b) Delaware law governs the fiduciary duties of boards of directors of those companies; and (c) Delaware law influences corporate law in numerous other states in which we also represent clients involved in deal-related litigation.

Also of strategic importance to our clients is our team's proven track record of achieving favorable resolutions in M&A disputes litigated in the Delaware Court of Chancery and throughout the U.S. , including both state and federal jurisdictions.

Though the majority of our experience involves publicly held corporations, Wilson Sonsini's M&A litigators also represent clients in contested matters arising out of private company deals.

Special Litigation and Demand Committees

With the increase in derivative litigation in recent years, boards of directors are increasingly looking to independent committees formed to consider stockholder litigation demands and derivative litigation. Wilson Sonsini has deep experience advising demand review committees (formed to consider litigation demands made on the company) and special litigation committees (formed where derivative litigation has been filed and the board is deemed interested).

The Heightened Value of our Experience

 Wilson Sonsini advises demand review committees (formed to consider litigation demands made on the company) and special litigation committees (formed where derivative litigation has been filed and the board is deemed interested).

Our experienced team stays abreast of the key issues and case law related to special litigation and demand committees, which allows us to provide ongoing, immediate, and business-forward advice to clients. Also, because Delaware courts have continued to define and develop specific procedures and preferences for addressing litigation involving special committees, our team’s experience positions us to represent clients where, as well as when, clients need us.

In matter after matter, our team has applied its high level of experience to quickly assess underlying facts, help clients address complicated fiduciary duty issues, and follow a process that is the best interest of the corporation—and one that can withstand rigorous judicial review. See the above tab for a list of select matters.

A Team Anchored by Seasoned Litigators and Former Jurists

Wilson Sonsini's experienced team includes proven litigators and former jurists who have represented clients in disputes involving complicated and potentially business-threatening claims brought by shareholder activists, serial plaintiff counsel firms, and other aggressive parties. For example, our team includes William (Bill) B. Chandler, III, the former Chancellor on the Court of Chancery, and Joseph R. Slights III, the former Vice Chancellor on the Court of Chancery, who bring their wealth of knowledge from their time on the bench to these matters. The team also includes Katherine Henderson and Brad Sorrels—both of whom lead the firm's Corporate Governance Litigation practice. To view the complete team, click here.

Alerts
Delaware Court of Chancery Interprets New Section 144 and Applies Heightened Presumption of Director Independence
On June 15, 2026, the Delaware Court of Chancery issued an Opinion interpreting Section 144 of the Delaware General Corporation Law (the DGCL), the landmark statutory measure adopted last year to provide safe harbors for certain conflicted transactions and address director independence, among other reforms.1 The Opinion arose in a common context in Delaware stockholder litigation: claims over director and management compensation. In the decision, Vice Chancellor Lori W. Will applied, for the first time, the statute’s heightened presumption of independence for directors of public companies determined by the board to be independent under the relevant NYSE or Nasdaq listing standards to dismiss derivative claims on demand futility grounds.
Alerts
Reporting Season Alert: Five Key Considerations for Proxy Season
With the 2026 proxy season upon us, companies are finalizing annual meeting materials against a backdrop of shifting investor priorities, evolving engagement dynamics, and regulatory uncertainty. This alert highlights governance, disclosure, and engagement considerations for companies preparing for their 2026 annual meetings.1 Below are five key considerations as you finalize preparations.
Alerts
Delaware Supreme Court Upholds Landmark Statutory Amendments
On February 27, 2026, the Delaware Supreme Court upheld recent amendments to the Delaware General Corporation Law (the DGCL) that provide safe harbor procedures for board decisions and corporate transactions involving director, officer, or controlling stockholder conflicts. The decision is a welcome development, and the statutory provisions at issue will continue to shape board decision-making and transaction planning for many companies and investors.
Newsletters
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.
Alerts
Delaware Supreme Court Reverses Rescission of Elon Musk’s Pay Package and Lowers Plaintiff’s Fee Award
In a much-anticipated decision issued on December 19, 2025, the Delaware Supreme Court reversed the Delaware Court of Chancery’s rescission of Elon Musk’s 2018 equity compensation package and, as a result, significantly cut back the trial court’s award of attorneys’ fees to the plaintiffs’ attorneys. The opinion1 resolves a multi-year litigation over Musk’s compensation, which was valued at approximately $56 billion at the time of the Court of Chancery’s post-trial decision in 2024. 
Newsletters
2025 Silicon Valley 150 Corporate Governance Report

Wilson Sonsini’s 2025 Silicon Valley 150 Corporate Governance Report reviews the corporate governance practices and disclosures of Silicon Valley’s largest public companies. The report includes information regarding board matters, officer matters, defensive measures, proxy statement disclosures, environmental, social, and governance (ESG) and sustainability reporting, stockholder proposals, activism, and executive compensation of the SV150 companies.

View All
Insights
Alerts
Delaware Court of Chancery Interprets New Section 144 and Applies Heightened Presumption of Director Independence
On June 15, 2026, the Delaware Court of Chancery issued an Opinion interpreting Section 144 of the Delaware General Corporation Law (the DGCL), the landmark statutory measure adopted last year to provide safe harbors for certain conflicted transactions and address director independence, among other reforms.1 The Opinion arose in a common context in Delaware stockholder litigation: claims over director and management compensation. In the decision, Vice Chancellor Lori W. Will applied, for the first time, the statute’s heightened presumption of independence for directors of public companies determined by the board to be independent under the relevant NYSE or Nasdaq listing standards to dismiss derivative claims on demand futility grounds.
Alerts
Reporting Season Alert: Five Key Considerations for Proxy Season
With the 2026 proxy season upon us, companies are finalizing annual meeting materials against a backdrop of shifting investor priorities, evolving engagement dynamics, and regulatory uncertainty. This alert highlights governance, disclosure, and engagement considerations for companies preparing for their 2026 annual meetings.1 Below are five key considerations as you finalize preparations.
Alerts
Delaware Supreme Court Upholds Landmark Statutory Amendments
On February 27, 2026, the Delaware Supreme Court upheld recent amendments to the Delaware General Corporation Law (the DGCL) that provide safe harbor procedures for board decisions and corporate transactions involving director, officer, or controlling stockholder conflicts. The decision is a welcome development, and the statutory provisions at issue will continue to shape board decision-making and transaction planning for many companies and investors.
Newsletters
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.
Alerts
Delaware Supreme Court Reverses Rescission of Elon Musk’s Pay Package and Lowers Plaintiff’s Fee Award
In a much-anticipated decision issued on December 19, 2025, the Delaware Supreme Court reversed the Delaware Court of Chancery’s rescission of Elon Musk’s 2018 equity compensation package and, as a result, significantly cut back the trial court’s award of attorneys’ fees to the plaintiffs’ attorneys. The opinion1 resolves a multi-year litigation over Musk’s compensation, which was valued at approximately $56 billion at the time of the Court of Chancery’s post-trial decision in 2024. 
Newsletters
2025 Silicon Valley 150 Corporate Governance Report

Wilson Sonsini’s 2025 Silicon Valley 150 Corporate Governance Report reviews the corporate governance practices and disclosures of Silicon Valley’s largest public companies. The report includes information regarding board matters, officer matters, defensive measures, proxy statement disclosures, environmental, social, and governance (ESG) and sustainability reporting, stockholder proposals, activism, and executive compensation of the SV150 companies.

View All
WSGR Events
Internal Investigations: Advanced Issues for In-House Counsel — Privilege, Process, and Judgment at the Margins
In today’s heightened regulatory environment, internal investigations are no longer just reactive exercises—they are critical strategic tools that demand careful judgment, rigorous process, and vigilant privilege protection. Join Wilson Sonsini in Salt Lake City on Tuesday, June 23, for a lunchtime CLE program designed for in-house counsel navigating the most demanding investigation scenarios. 
Affiliated Programs
2026 BYU Winter Deals Conference
Wilson Sonsini is proud to sponsor BYU Law School’s Winter Deals Conference. The conference brings together leading scholars and practitioners to discuss the modern global economy’s most pressing legal issues from mergers and acquisitions to venture capital to corporate governance, and more. Litigation partner Dan Iqbal will serve as a panelist on the Keynote Panel with Justice Karen Valihura (Delaware Supreme Court) on Friday, February 6 at 6:10 p.m. For more details, please visit the event website.
Speaking Engagements
PLI's Twenty-Third Annual Directors' Institute on Corporate Governance
Boards must grapple with ever-changing expectations and responsibilities, including oversight of complex operational issues, risk management, board succession, executive compensation, disclosure and responsiveness to and communication with shareholders pressing different concerns. In addition, new laws and regulations, and pressure from institutional shareholders, have put new requirements on companies and on boards. Looking forward, what additional changes can boards expect to face? At this program, leading corporate governance experts—directors, government officials, corporate counsel, and consultants—will share their perspectives on successfully navigating these evolving expectations and pressures. 
Affiliated Programs
2025 Berkeley Fall Forum on Corporate Governance – Pre-Event Webinar
Wilson Sonsini is excited to sponsor the 2025 Berkeley Forum on Corporate Governance, hosted by the Berkeley Center for Law and Business.
WSGR Events
The Future of Delaware Law
For decades, Delaware has been the top choice for incorporation in the United States, providing a stable legal framework and business-savvy courts. In recent months, a debate has arisen over the ongoing vitality of Delaware law, while other states have stepped up their efforts to compete with Delaware. In response to concerns in the market and to ensure that Delaware preserves its commitment to clarity and predictability, the Delaware legislature and Governor recently enacted landmark amendments to Delaware corporate law. Please join us for a webinar discussing these developments and our observations.  
Affiliated Programs
Association of Corporate Counsel San Francisco Bay Area — Deal or No Deal
Wilson Sonsini is proud to sponsor the Association of Corporate Counsel San Francisco Bay Area’s biggest event of the year — Deal or No Deal. The day includes 6 hours of CLE programs on topics focused on contracts, transactions, and related case law, as well as numerous networking opportunities. All in-house counsel are welcome to attend.
View All
Events
WSGR Events
Internal Investigations: Advanced Issues for In-House Counsel — Privilege, Process, and Judgment at the Margins
In today’s heightened regulatory environment, internal investigations are no longer just reactive exercises—they are critical strategic tools that demand careful judgment, rigorous process, and vigilant privilege protection. Join Wilson Sonsini in Salt Lake City on Tuesday, June 23, for a lunchtime CLE program designed for in-house counsel navigating the most demanding investigation scenarios. 
Affiliated Programs
2026 BYU Winter Deals Conference
Wilson Sonsini is proud to sponsor BYU Law School’s Winter Deals Conference. The conference brings together leading scholars and practitioners to discuss the modern global economy’s most pressing legal issues from mergers and acquisitions to venture capital to corporate governance, and more. Litigation partner Dan Iqbal will serve as a panelist on the Keynote Panel with Justice Karen Valihura (Delaware Supreme Court) on Friday, February 6 at 6:10 p.m. For more details, please visit the event website.
Speaking Engagements
PLI's Twenty-Third Annual Directors' Institute on Corporate Governance
Boards must grapple with ever-changing expectations and responsibilities, including oversight of complex operational issues, risk management, board succession, executive compensation, disclosure and responsiveness to and communication with shareholders pressing different concerns. In addition, new laws and regulations, and pressure from institutional shareholders, have put new requirements on companies and on boards. Looking forward, what additional changes can boards expect to face? At this program, leading corporate governance experts—directors, government officials, corporate counsel, and consultants—will share their perspectives on successfully navigating these evolving expectations and pressures. 
Affiliated Programs
2025 Berkeley Fall Forum on Corporate Governance – Pre-Event Webinar
Wilson Sonsini is excited to sponsor the 2025 Berkeley Forum on Corporate Governance, hosted by the Berkeley Center for Law and Business.
WSGR Events
The Future of Delaware Law
For decades, Delaware has been the top choice for incorporation in the United States, providing a stable legal framework and business-savvy courts. In recent months, a debate has arisen over the ongoing vitality of Delaware law, while other states have stepped up their efforts to compete with Delaware. In response to concerns in the market and to ensure that Delaware preserves its commitment to clarity and predictability, the Delaware legislature and Governor recently enacted landmark amendments to Delaware corporate law. Please join us for a webinar discussing these developments and our observations.  
Affiliated Programs
Association of Corporate Counsel San Francisco Bay Area — Deal or No Deal
Wilson Sonsini is proud to sponsor the Association of Corporate Counsel San Francisco Bay Area’s biggest event of the year — Deal or No Deal. The day includes 6 hours of CLE programs on topics focused on contracts, transactions, and related case law, as well as numerous networking opportunities. All in-house counsel are welcome to attend.
View All
David J. Berger
Partner
Palo Alto
David is an expert in and leader of the corporate governance and shareholder activism practices.
  • Litigation
View Profile
William B. Chandler III
Partner
Wilmington, DE
Mr. Chandler represents clients in governance matters, committee assignments, internal investigations, and transactional matters.
  • Litigation
View Profile
Andrew D. Cordo
Partner
Wilmington, DE
Andrew (Andy) Cordo is a partner in the litigation practice at Wilson Sonsini Goodrich & Rosati’s Wilmington, Delaware, office.
  • Litigation
View Profile
Ben Crosson
Partner
Palo Alto
Ben represents clients in complex litigation matters and advises them in conjunction with government and internal investigations.
  • Litigation
View Profile
John P. Flynn
Partner
San Francisco
John is a veteran trial lawyer with 30 years of experience in high-stakes, enterprise-threatening corporate and commercial litigation.
  • Litigation
View Profile
Shannon E. German
Partner
Wilmington, DE
Shannon German is a partner in the Wilmington office of Wilson Sonsini Goodrich & Rosati. Her practice focuses on corporate governance litigation and counseling, navigation of corporate fiduciary duties, and representation of companies and their officers and directors in stockholder class actions, derivative suits, and complex commercial litigation in the Delaware Court of Chancery and the Delaware Supreme Court. She also represents clients in stockholder class actions, derivative suits, and securities actions in the state and federal courts throughout the country.
  • Litigation
View Profile
Caz Hashemi
Partner
Palo Alto
Caz is head of Wilson Sonsini’s litigation department and a member of the firm’s board of directors. He is nationally recognized as one of the top attorneys in his field of practice, regularly representing clients in high stakes securities litigation and government investigation matters. 
  • Litigation
View Profile
Katherine L. Henderson
Partner
San Francisco
Katherine represents companies and their officers and directors in stockholder class actions, derivative suits, and complex commercial litigation.
  • Litigation
View Profile
Deno Himonas
Partner
Salt Lake City
Justice Constandinos "Deno" Himonas is a partner in the Salt Lake City office of Wilson Sonsini Goodrich & Rosati, where he advises companies on complex governance and regulatory issues.
  • Litigation
View Profile
John Karin
Partner
New York

John is a partner with experience managing all stages of large, bet-the-company litigation across the United States and abroad.

  • Litigation
View Profile
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People
David J. Berger
Partner
Palo Alto
David is an expert in and leader of the corporate governance and shareholder activism practices.
  • Litigation
View Profile
William B. Chandler III
Partner
Wilmington, DE
Mr. Chandler represents clients in governance matters, committee assignments, internal investigations, and transactional matters.
  • Litigation
View Profile
Andrew D. Cordo
Partner
Wilmington, DE
Andrew (Andy) Cordo is a partner in the litigation practice at Wilson Sonsini Goodrich & Rosati’s Wilmington, Delaware, office.
  • Litigation
View Profile
Ben Crosson
Partner
Palo Alto
Ben represents clients in complex litigation matters and advises them in conjunction with government and internal investigations.
  • Litigation
View Profile
John P. Flynn
Partner
San Francisco
John is a veteran trial lawyer with 30 years of experience in high-stakes, enterprise-threatening corporate and commercial litigation.
  • Litigation
View Profile
Shannon E. German
Partner
Wilmington, DE
Shannon German is a partner in the Wilmington office of Wilson Sonsini Goodrich & Rosati. Her practice focuses on corporate governance litigation and counseling, navigation of corporate fiduciary duties, and representation of companies and their officers and directors in stockholder class actions, derivative suits, and complex commercial litigation in the Delaware Court of Chancery and the Delaware Supreme Court. She also represents clients in stockholder class actions, derivative suits, and securities actions in the state and federal courts throughout the country.
  • Litigation
View Profile
Caz Hashemi
Partner
Palo Alto
Caz is head of Wilson Sonsini’s litigation department and a member of the firm’s board of directors. He is nationally recognized as one of the top attorneys in his field of practice, regularly representing clients in high stakes securities litigation and government investigation matters. 
  • Litigation
View Profile
Katherine L. Henderson
Partner
San Francisco
Katherine represents companies and their officers and directors in stockholder class actions, derivative suits, and complex commercial litigation.
  • Litigation
View Profile
Deno Himonas
Partner
Salt Lake City
Justice Constandinos "Deno" Himonas is a partner in the Salt Lake City office of Wilson Sonsini Goodrich & Rosati, where he advises companies on complex governance and regulatory issues.
  • Litigation
View Profile
John Karin
Partner
New York

John is a partner with experience managing all stages of large, bet-the-company litigation across the United States and abroad.

  • Litigation
View Profile
View All
  • Tornetta v. Maffei, et al (Delaware Court of Chancery) — represented independent directors of Pandora in shareholder litigation seeking post-closing damages for alleged breaches of fiduciary duty
  • Colmenares v. ESI, Inc. et al (Oregon) — represented ESI and its directors in shareholder litigation
  • City of Daytona Beach Police and Fire Pension Fund v. ExamWorks Group, Inc., et al (Delaware Court of Chancery) — represented ExamWorks and its directors and officers in shareholder litigation seeking post-closing damages for alleged breaches of fiduciary duty
  • Barracuda merger litigation (Northern District of California) — represented Barracuda and its directors in shareholder litigation
  • Gandlemen re Rofin et al (Michigan Circuit Court) — represented Coherent in litigation concerning its acquisition of Rofin
  • In re Advanced Analogic Technologies, Inc. (Arbitration in the Delaware Court of Chancery) — represented Advanced Analogic Technologies in busted deal litigation
  • Polycom, Inc. v. Sun Capital Partners V, L.P., et al. (Delaware Court of Chancery) — represented Polycom in busted deal litigation
  • In re Tibco Software, Inc. Stockholders Litigation (Delaware Court of Chancery) — represented TIBCO Software and its directors in shareholder litigation
  • In re Riverbed Technology, Inc. Stockholders Litigation (Delaware Court of Chancery, Northern District of California, San Francisco Superior Court) — represented Riverbed Technology and its directors in shareholder litigation
  • In re Informatica Stockholder Litigation (Delaware Court of Chancery) — represented Informatica and its directors in shareholder litigation
  • In re Audience, Inc. Shareholder Litigation (Santa Clara Superior Court) — represented Audience and its directors in shareholder litigation
  • Hyer, et al. v. Rally Software Development Corp., et al., (Delaware Court of Chancery) — represented CA Technologies in shareholder litigation
  • In re Genentech/Roche Shareholder Litigation (San Mateo Superior Court, Delaware Court of Chancery) — represented Genentech and its directors in shareholder litigation
  • Carrigan v. Solectron Corporation, et al. (Santa Clara Superior Court) — represented Solectron and its directors in shareholder litigation
  • Burns v. Sosnoff, et al. (Illinois Chancery Court) — represented TD Ameritrade in shareholder litigation
  • Staehr v. Cash Systems, Inc., et al. (Nevada District Court) — represented Cash Systems and its directors in shareholder litigation
  • In re Pervasive Software Inc. Shareholder Litigation (Travis County, Texas District Court, Delaware Court of Chancery) — represented Pervasive and its directors in shareholder litigation
  • Simon, et al. v. Stang, et al. (Santa Clara Superior Court) — represented Solta Medical and its former directors in shareholder litigation
  • Vivint Solar, Inc. v. SunEdison, Inc., C.A. No. 12088-VCL (Del. Ch.) — representing Vivint Solar and its directors in shareholder litigation and related litigation seeking damages for breaches of a merger agreement
  • In re Aruba Networks Inc. Stockholders Litigation, Consol. C.A. No. 10765-VCL (Del. Ch.) — representing Aruba Networks and its directors in shareholder litigation
Select Merger-Related Litigation Matters
  • Tornetta v. Maffei, et al (Delaware Court of Chancery) — represented independent directors of Pandora in shareholder litigation seeking post-closing damages for alleged breaches of fiduciary duty
  • Colmenares v. ESI, Inc. et al (Oregon) — represented ESI and its directors in shareholder litigation
  • City of Daytona Beach Police and Fire Pension Fund v. ExamWorks Group, Inc., et al (Delaware Court of Chancery) — represented ExamWorks and its directors and officers in shareholder litigation seeking post-closing damages for alleged breaches of fiduciary duty
  • Barracuda merger litigation (Northern District of California) — represented Barracuda and its directors in shareholder litigation
  • Gandlemen re Rofin et al (Michigan Circuit Court) — represented Coherent in litigation concerning its acquisition of Rofin
  • In re Advanced Analogic Technologies, Inc. (Arbitration in the Delaware Court of Chancery) — represented Advanced Analogic Technologies in busted deal litigation
  • Polycom, Inc. v. Sun Capital Partners V, L.P., et al. (Delaware Court of Chancery) — represented Polycom in busted deal litigation
  • In re Tibco Software, Inc. Stockholders Litigation (Delaware Court of Chancery) — represented TIBCO Software and its directors in shareholder litigation
  • In re Riverbed Technology, Inc. Stockholders Litigation (Delaware Court of Chancery, Northern District of California, San Francisco Superior Court) — represented Riverbed Technology and its directors in shareholder litigation
  • In re Informatica Stockholder Litigation (Delaware Court of Chancery) — represented Informatica and its directors in shareholder litigation
  • In re Audience, Inc. Shareholder Litigation (Santa Clara Superior Court) — represented Audience and its directors in shareholder litigation
  • Hyer, et al. v. Rally Software Development Corp., et al., (Delaware Court of Chancery) — represented CA Technologies in shareholder litigation
  • In re Genentech/Roche Shareholder Litigation (San Mateo Superior Court, Delaware Court of Chancery) — represented Genentech and its directors in shareholder litigation
  • Carrigan v. Solectron Corporation, et al. (Santa Clara Superior Court) — represented Solectron and its directors in shareholder litigation
  • Burns v. Sosnoff, et al. (Illinois Chancery Court) — represented TD Ameritrade in shareholder litigation
  • Staehr v. Cash Systems, Inc., et al. (Nevada District Court) — represented Cash Systems and its directors in shareholder litigation
  • In re Pervasive Software Inc. Shareholder Litigation (Travis County, Texas District Court, Delaware Court of Chancery) — represented Pervasive and its directors in shareholder litigation
  • Simon, et al. v. Stang, et al. (Santa Clara Superior Court) — represented Solta Medical and its former directors in shareholder litigation
  • Vivint Solar, Inc. v. SunEdison, Inc., C.A. No. 12088-VCL (Del. Ch.) — representing Vivint Solar and its directors in shareholder litigation and related litigation seeking damages for breaches of a merger agreement
  • In re Aruba Networks Inc. Stockholders Litigation, Consol. C.A. No. 10765-VCL (Del. Ch.) — representing Aruba Networks and its directors in shareholder litigation
  • Representing Special Litigation Committee of the Board of Directors of Expedia in connection with its investigation into claims surrounding Expedia’s merger with Liberty Expedia Holdings and related transactions.
  • Represented evaluation committee of the Board of Directors of E.I. du Pont de Nemours and Company. Board’s decision to reject shareholder demand on the basis of Wilson Sonsini's investigation was upheld by the Delaware Supreme Court following stockholder challenge.
  • Represented subcommittee of the Board of Directors of Simon Property Group in connection with stockholder demand related to CEO’s compensation. Board rejected demand based on Wilson Sonsini's investigation and stockholders did not challenge decision to reject demand.
  • Represented the Special Committee of McKesson after $150 million settlement with DEA. Board rejected stockholder demand based upon Wilson Sonsini's investigation. Stockholder did not file litigation.
  • Representing Special Litigation Committee of the Insys Board of Directors in connection with claims related to the Company’s marketing of opioids.
  • Represented Hewlett-Packard in a variety of corporate governance issues; including representing HP and individual members of management in connection with multiple derivative actions in which the Board of Directors had appointed a demand review committee; represented company in a Section 220 books and records action where plaintiffs sought access to a report in connection with a previous investigation and which had been relied upon by the demand review committee.
  • Represented Board of Directors of Starbucks Corporation in connection with shareholder litigation demand alleging directors and officers breached their fiduciary duties with respect to the company’s alleged underpayment of taxes in the European Union. Wilson Sonsini also successfully defended the wrongful refusal lawsuit.
Select Special Litigation and Demand Committee Matters
  • Representing Special Litigation Committee of the Board of Directors of Expedia in connection with its investigation into claims surrounding Expedia’s merger with Liberty Expedia Holdings and related transactions.
  • Represented evaluation committee of the Board of Directors of E.I. du Pont de Nemours and Company. Board’s decision to reject shareholder demand on the basis of Wilson Sonsini's investigation was upheld by the Delaware Supreme Court following stockholder challenge.
  • Represented subcommittee of the Board of Directors of Simon Property Group in connection with stockholder demand related to CEO’s compensation. Board rejected demand based on Wilson Sonsini's investigation and stockholders did not challenge decision to reject demand.
  • Represented the Special Committee of McKesson after $150 million settlement with DEA. Board rejected stockholder demand based upon Wilson Sonsini's investigation. Stockholder did not file litigation.
  • Representing Special Litigation Committee of the Insys Board of Directors in connection with claims related to the Company’s marketing of opioids.
  • Represented Hewlett-Packard in a variety of corporate governance issues; including representing HP and individual members of management in connection with multiple derivative actions in which the Board of Directors had appointed a demand review committee; represented company in a Section 220 books and records action where plaintiffs sought access to a report in connection with a previous investigation and which had been relied upon by the demand review committee.
  • Represented Board of Directors of Starbucks Corporation in connection with shareholder litigation demand alleging directors and officers breached their fiduciary duties with respect to the company’s alleged underpayment of taxes in the European Union. Wilson Sonsini also successfully defended the wrongful refusal lawsuit.
Related Practices
  • Corporate Governance
  • Mergers & Acquisitions
  • Shareholder Engagement and Activism
  • Board and Internal Investigations
  • Government Investigations
  • Securities Litigation
Recent Insights
Alerts
Delaware Court of Chancery Interprets New Section 144 and Applies Heightened Presumption of Director Independence
On June 15, 2026, the Delaware Court of Chancery issued an Opinion interpreting Section 144 of the Delaware General Corporation Law (the DGCL), the landmark statutory measure adopted last year to provide safe harbors for certain conflicted transactions and address director independence, among other reforms.1 The Opinion arose in a common context in Delaware stockholder litigation: claims over director and management compensation. In the decision, Vice Chancellor Lori W. Will applied, for the first time, the statute’s heightened presumption of independence for directors of public companies determined by the board to be independent under the relevant NYSE or Nasdaq listing standards to dismiss derivative claims on demand futility grounds.
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Alerts
Reporting Season Alert: Five Key Considerations for Proxy Season
With the 2026 proxy season upon us, companies are finalizing annual meeting materials against a backdrop of shifting investor priorities, evolving engagement dynamics, and regulatory uncertainty. This alert highlights governance, disclosure, and engagement considerations for companies preparing for their 2026 annual meetings.1 Below are five key considerations as you finalize preparations.
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WSGR Events
Internal Investigations: Advanced Issues for In-House Counsel — Privilege, Process, and Judgment at the Margins
In today’s heightened regulatory environment, internal investigations are no longer just reactive exercises—they are critical strategic tools that demand careful judgment, rigorous process, and vigilant privilege protection. Join Wilson Sonsini in Salt Lake City on Tuesday, June 23, for a lunchtime CLE program designed for in-house counsel navigating the most demanding investigation scenarios. 
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Affiliated Programs
2026 BYU Winter Deals Conference
Wilson Sonsini is proud to sponsor BYU Law School’s Winter Deals Conference. The conference brings together leading scholars and practitioners to discuss the modern global economy’s most pressing legal issues from mergers and acquisitions to venture capital to corporate governance, and more. Litigation partner Dan Iqbal will serve as a panelist on the Keynote Panel with Justice Karen Valihura (Delaware Supreme Court) on Friday, February 6 at 6:10 p.m. For more details, please visit the event website.
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