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Securities Law Alerts

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Simpson Thacher’s Securities Law Alerts cover noteworthy decisions in the area of securities and shareholder litigation, including developments concerning stock drop, offering, M&A, derivative, and ERISA litigation.

2025 Year in Review Edition:

Supreme Court Decisions and Developments

Significant Circuit Court Decisions

Significant State Supreme Court Decisions

To view this issue’s articles as a PDF, please click here.

“Simpson Thacher’s ‘deep bench of trial and appellate lawyers’ is ‘regularly retained to act on multibilliondollar securities class actions and derivative suits.’”
– Chambers USA

Recent Securities Law Alerts

09.16.25
Second Circuit: ERISA Plaintiffs Who Did Not Personally Invest in Allegedly Mismanaged Investment Options Lack Article III and Class Standing

09.08.25
Ninth Circuit: “Snappy” Opioid Slogan Not Deceptive Where Additional Disclosures Clarified Its Context

08.08.25
Ninth Circuit: Disclaiming Fraud Does Not Waive a Section 12(a)(2) Misstatement Claim

07.15.25
Second Circuit: Rejects Novel Theory of Liability for Short-Swing Profits Under Section 16(b)

05.23.25
Supreme Court: Settles Circuit Split on Pleading Standards for Prohibited-Transaction Claims

04.15.25
Ninth Circuit: Clarifies the Application of the Larson Test in Shareholder Derivative Actions

07.30.24
Second Circuit: Reaffirms Donoghue Holding That Short-Swing Trading Inflicts Injury Sufficient for Constitutional Standing

07.02.24
Supreme Court Issues Long-Awaited Regulatory Decisions

04.30.24
Seventh Circuit: Raises the Possibility of Sanctions Against Class Counsel Seeking Mootness Fee

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