As we teased in our 20th Anniversary post, the D&O Diary Podcast launched earlier this week. We recognize that content is consumed across a variety of media, and we are grateful to our community for suggesting that we record a podcast discussing D&O Diary topics.
Continue Reading The D&O Diary Launches Podcast Series
For several years, cybersecurity has been a perennial D&O liability issue. Although there has never quite been the volume of cybersecurity-related D&O litigation that some anticipated, cybersecurity-related D&O claims do continue to arise. In the latest example, last week a plaintiff shareholder filed a securities suit against cloud data storage company Snowflake, alleging, among many other things, that the company failed to disclose shortcomings in its customer data security arrangements that allegedly allowed key customers to experience a data breach. There are a number of noteworthy aspects of this new complaint and its cybersecurity-related allegations, as discussed below. A copy of the plaintiff’s complaint can be found here.
Continue Reading Cybersecurity-Related Securities Suit Hits Cloud Data Storage Company
The D&O Diary has been tracking how fragmented state and federal climate disclosure initiatives, along with rising anti-ESG litigation, are reshaping D&O risk. Vanguard Guard Group’s (Vanguard) recent settlement of the anti-ESG antitrust litigation that red state attorneys general (AGs) brought against the firm and several other asset management companies could mark a watershed moment in the intersection of ESG governance and D&O liability.
Continue Reading Vanguard’s Antitrust Settlement in the Anti-ESG Era and Emerging D&O Risks
Those who observe securities class action litigation filing patterns know that life sciences companies are frequent securities litigation targets. Though the number of securities suit filings against life sciences companies fluctuates from year to year, more recently the number of life sciences company filings has stabilized at higher levels, according to the latest annual report from the Sidley law firm. A copy of the law firm’s recent memo, entitled “Securities Class Actions in the Life Sciences Sector: 2025 Annual Survey,” can be found here. A two-page summary of the report can be found here.
Continue Reading A Detailed Look at the 2025 Securities Litigation Against Life Sciences Companies
It is a well-established fact that securities class action lawsuits rarely go to trial. In most cases, the lawsuits are either dismissed or settled. However, there has been an interesting recent uptick in the number of securities suits going all the way to a jury verdict. In the latest example of this development, on May 14, 2026, a federal court jury entered a defense verdict following trial in the long-running ExxonMobil securities class action lawsuit. As discussed below, this verdict is the latest of several post-trial verdicts entered in securities suits this year. A May 14, 2026, Law360 article about the verdict can be found here.
Continue Reading Rare Securities Suit Trial Results in Defense Verdict in ExxonMobil Case
Following the U.S. Supreme Court’s decision invalidating tariffs imposed under the International Emergency Economic Powers Act (IEEPA), litigation risk has entered a new phase. As previously noted on The D&O Diary, early lawsuits seeking recovery focused on companies that passed tariff costs on to consumers. A newly filed class action against Sony Interactive Entertainment suggests a second wave may now be emerging; one targeting companies for allegedly pursuing a “double recovery” by retaining both higher consumer prices and government tariff refunds.
Continue Reading A Second Wave of Tariff Recovery Litigation and Expanding D&O Risk
In recent months, securities class action litigation patterns involving AI-related disclosures have emerged and developed, as has been documented on this site (most recently, for example, here). There has of course been a great deal of other kinds of AI-related litigation, including lawsuits involving intellectual property issues, privacy and data-collection concerns, discrimination and bias claims, and a variety of different kinds of tort allegations.
In a shareholder derivative lawsuit recently filed against the board of software firm Adobe, these two lines of AI-related litigation crossed; the plaintiff shareholder alleges that the defendants violated their board duties by knowingly permitting the company to train its artificial intelligence tools using material copyrighted by others and in a way that subjected the company to IP-related litigation. As discussed below, the new lawsuit illustrates how the broader range of AI-related litigation can translate into follow-on D&O claims, representing yet another area of AI-related D&O risk.
Continue Reading AI-Related IP Litigation Triggers Follow-On D&O Lawsuit
In February, I noted an emerging securities litigation trend involving pump-and-dump schemes characterized by thin public float, retail investor participation, and the amplifying effects of social media. Three subsequent pump-and-dump securities filings in February and March 2026, along with a recent federal court ruling involving social media platform liability, provide further evidence that these risks may be accelerating. Taken together, these developments have important implications for D&O liability exposure and for underwriters evaluating risks associated with low-float issuers and companies whose securities trading activity may be influenced by online promotional activity.
Continue Reading Follow-On Developments in Pump-and-Dump Litigation
One of the interesting features of the rise of AI has been the advent of “AI-and” businesses – that is, businesses whose strategy is to apply AI tools to traditional business models. When “AI-and” business results fall short, securities litigation has sometimes followed. In the latest example of this kind of litigation, earlier this week a plaintiff shareholder filed a securities suit against Upstart Holdings, a company whose business model involves applying AI tools to traditional credit rating and lending services, after the results from the company’s AI-updated credit rating tool disappointed investors. A copy of the new Upstart Holdings complaint can be found here.
Continue Reading Lending Platform Hit with AI-Related Securities Suit
One of the more interesting recent developments in the world of directors’ and officers’ liability and insurance has been the rise of collective actions and mass actions outside the U.S. Class actions are of course a well-established part of the litigation scene in the U.S., but at least traditionally class, mass, or collective actions have been rare outside the U.S. However, as discussed in a December 29, 2025, memo from the Labaton Keller Sucharow law firm entitled “Global Class Action Litigation: Causes, Effects and What’s Next” (here) a variety of changes in a number of jurisdictions has led to an increase in collective litigation outside the U.S., a development that could have important future implications for potential D&O liability.
Continue Reading The Continuing Rise of Collective and Mass Actions Outside the U.S.