Securities Litigation Against Life Sciences Companies 2024 Year in Review

Goodwin’s in-depth analysis of trends in securities class action filings in the life sciences industry, including highlights from important court decisions.

Welcome to our ninth annual report on US securities class actions filed against publicly traded life sciences companies, which include pharmaceutical, biotechnology, medical device, and healthcare companies.

In the following sections, we analyze data and trends in securities class actions across all industries and in the life sciences industry in particular. We then highlight important 2024 decisions issued by federal courts in securities cases brought against life sciences companies and their officers.

Please reach out to the contacts listed below if you have questions or feedback or want to discuss how trends in the industry may affect your business.

Executive Summary

In the context of securities class action litigation, 2024 saw a return to long-term trends of increasing scrutiny and litigation against life sciences companies. Securities class action filings against publicly traded life sciences companies dropped in 2023 but came roaring back in 2024, jumping above the number of cases filed in 2022 or 2023 and reaching 40% above the average since 1997. Life sciences companies remain the biggest industry target for federal stockholder class actions.

While newly filed cases were at a high point, on the merits, court rulings continued to trend favorably for defendants throughout 2024, with courts dismissing the majority of observed cases. Several decisions highlighted the distinction between pure opinions or predictions of the future (which tend to be nonactionable) on the one hand, and statements of historical fact on the other. To survive challenges to their public statements, companies and their officers and directors need to maintain care when speaking about ongoing activities (e.g., revenue trends, clinical trial results, active discussions with the Food and Drug Administration, and active manufacturing challenges).

Context: Securities Class Actions Against Life Sciences Companies

Securities cases against publicly traded life sciences companies are typically filed by stockholders acting on behalf of a proposed class. Usually, the plaintiffs’ objective is to recoup alleged investment losses following a company’s stock price decline. In the context of life sciences companies, those swings in stock price often occur after the announcement of setbacks or issues related to a company’s drugs or products. Issues may include negative feedback or actions from the Food and Drug Administration (FDA); delays, suspensions, or terminations of clinical trials; unfavorable clinical data results; adverse events affecting patients; product recalls; or manufacturing or supply challenges. Plaintiffs typically assert claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 (the 1934 Act) and SEC Rule 10b-5, alleging that the company and its officers made false or misleading statements or failed to disclose material information. If the alleged misstatements or omissions are related to a registered securities offering, plaintiffs may bring their claims under Sections 11, 12(a)(2), and 15 of the Securities Act of 1933 (the 1933 Act) — often in addition to claims made under the 1934 Act.

Securities Class Action Filings in All Industries in 2024

In 2024, the number of new securities class action filings in federal and state courts increased to 225, up 5% from 215 in 2023, and up again from 2022.1 Total “core” filings increased to 220 in 2024, up from 209 in 2023, which represented the second year-over-year increase in a row.2 Securities class action filings continued to increase from their low point in 2022.

Notably, this growth in filings is driven entirely by securities class action cases bringing only Section 10(b)–related claims under the 1934 Act. In 2024, 198 core securities class action cases filed brought only Section 10(b)–related claims, the highest on record.3 The increase in federal 1934 Act cases more than made up for the decrease in state and federal cases brought under the 1933 Act, which fell from 32 filings in 2023 to only 21 filings in 2024.4 New core federal class actions related to special purpose acquisition company (SPAC) transactions also continued to fall from their peak of 33 cases in 2021, dropping to only 11 filings in 2024.5 As has been the case since their dramatic decline in 2021, M&A class action filings continued to fall in 2024, with only five such federal class action cases filed.6

Life Sciences Analysis: Securities Class Action Filings in 2024

Life sciences companies make up much of the consumer non-cyclical sector. New core federal filings in that sector rose in 2024 to 66, reversing a decrease in filings in 2023. That increase in filings came entirely from life sciences, with 52 filed securities class actions in 2024, up from 40 in 2023, and 40% higher than the long-run average from 1997 through 2023. As in years past, the consumer non-cyclical sector continues to represent the largest single sector for federal securities class action filings.7 The high volume of filings against life sciences companies in particular is likely due to the inherently volatile nature of their stock prices and the many event-driven disclosures made by such companies. That volatility likely drives the continued focus by the plaintiffs’ bar on life sciences companies. As shown in the chart below, the number of filings against companies in the life sciences industry in 2024 blew past the longer-term historical average and rose significantly when compared with 2023’s filings.

Seclit chart

Securities cases against life sciences companies continue to be dismissed at about the same rate as other cases. As shown in the table below, 15% of federal core securities cases filed against pharmaceutical, biotechnology, and healthcare companies in 2023 were dismissed by the end of 2024 (with 77.5% of such cases still pending), and 42.2% of those cases filed in 2022 had been dismissed. This dismissal rate for cases pending for only one to two years is consistent with the long-term trend of about half of life sciences securities class actions being dismissed by the courts. The comparable number for all core federal filings was 20% of 2023 cases and 36% of 2022 cases.8 Consistent with previous years, the most significant federal circuits for life sciences securities class actions continue to be the First, Second, Third, and Ninth circuits.

Seclit table 

Rulings in Securities Class Actions in 2024

As in previous years, we continue to focus on jurisdictions that have been the most active in securities class actions filed against life sciences companies: the First Circuit and District of Massachusetts; the Second Circuit, the Southern District of New York, and the Eastern District of New York; the Third Circuit, the District of New Jersey, and the Eastern District of Pennsylvania (added to this report in 2023); and the Ninth Circuit and the California District Courts. The Second and Ninth circuits still have the largest share of all cases, together accounting for 61% of all core federal class action filings (across all industries) in 2024, consistent with the long-term average from the 1997-to-2023 period.9 Following a spike in 2023, core federal filings in the Third Circuit reverted closer to the long-term mean in 2024.10

In 2024, federal courts in these key jurisdictions have continued to issue significant decisions in securities class actions concerning life sciences and healthcare companies in various growth stages, as well as their directors and officers. As in prior years, these cases involve challenges common to life sciences and healthcare companies, including negative clinical trial results, clinical trial delays, outcomes and discussions with FDA, supply and manufacturing issues, drug side effects, adverse events and other safety issues, product rollout, antitrust and regulatory compliance, M&A activity, and revenue projections. We highlight key decisions in each of these jurisdictions below.

While these decisions were largely favorable to defendants, some ruled in favor of the stockholder plaintiffs. Of the decisions resolving motions to dismiss, about two-thirds were favorable to defendants, but about one-third of the decisions denied the motion in whole or in part, allowing the case to proceed into the discovery phase and further litigation. Even of the favorable motion-to-dismiss decisions, more than one-third gave the plaintiffs an opportunity to replead their dismissed claims, continuing a trend in these jurisdictions — particularly within the Ninth Circuit — of giving plaintiffs leeway to amend their deficient pleadings multiple times. Overall, in the decisions, courts were skeptical of claims by plaintiffs challenging scientific opinions or forward-looking statements forecasting the potential future results of scientific research efforts. However, courts were more willing to deny motions to dismiss and allow claims to proceed into discovery if the plaintiffs could plead alleged misstatements concerning concrete facts (e.g., revenue trends in the current quarter or whether clinical trial enrollment had started).

 


[1]Securities Class Action Filings — 2024 Year in Review,” Cornerstone Research (2025), at 1, 4.
[2] The number of “core” filings excludes cases filed in connection with an M&A transaction. Id. at 1. Removing M&A filings teased out the historic growth (and then decline) in that category of filings from 2014 through 2022. Id. at 4.
[3] Id. at 2.
[4] Id. at 4.
[5] Id. at 5.
[6] Id. at 3.
[7] Id. at 22.
[8] Id. at 16.
[9] Id. at 23.
[10] Id. at 23.

Securities 2024 Case Summaries

This informational piece, which may be considered advertising under the ethical rules of certain jurisdictions, is provided on the understanding that it does not constitute the rendering of legal advice or other professional advice by Goodwin or its lawyers. Prior results do not guarantee similar outcomes.

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