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Case Overview

56 Days Left to Seek Lead Plaintiff
Lead Plaintiff Deadline: Lead Plaintiff Deadline: 12/26/2025
Status: Status: Investigating
Company Name: Company Name: DexCom, Inc.
Court: Court: Southern District of New York
Case Number: Case Number: 1:25cv08912
Class Period: Class Period: 07/26/2024 - 09/17/2025
Ticker: Ticker: DXCM
Related Attorneys: Lead Attorneys: Thomas W. Elrod
Related Practices: Related Practices: Securities
 
On March 7, 2025, DexCom disclosed in a filing with the U.S. Securities and Exchange Commission (“SEC”), that, three days earlier, it had received a warning letter from the U.S. Food and Drug Administration (“FDA”) related to concerns about manufacturing processes and quality management systems at certain of the Company’s facilities. On this news, the price of DexCom shares declined by $7.12 per share, or approximately 9.15%, from $77.84 per share on March 7, 2025 to close at $70.72 on March 10, 2025.

On March 25, 2025, the FDA published the Warning Letter on its website, revealing that DexCom had “adulterated” its G6 and G7 glucose monitors by “modifying the G6 and G7 sensors” without prior regulatory approval, thereby subjecting the devices to “larger inaccuracies” that “cause higher risks for users who rely on the sensors to dose insulin or make other diabetes treatment decisions.” On this news, the price of DexCom shares declined by $1.77 per share, or approximately 2.4%, from $75.32 per share on March 24, 2025 to close at $73.55 on March 25, 2025.

On September 8, 2025, equity research firm Oppenheimer issued a note downgrading DexCom’s rating to “perform” from “outperform.” Oppenheimer also removed its $102.00 price target on the Company’s stock. Oppenheimer cited, among other things, patient concern with the G7’s poor accuracy, failed sensor insertions, abrupt stoppages, and other issues, noting that “field checks point to rising concerns about G7 accuracy/performance.” On this news, the price of DexCom shares declined by $2.51 per share, or approximately 3.1%, from $80.51 per share on September 5, 2025 to close at $78.00 on September 8, 2025.

Then, on September 18, 2025, Hunterbrook Media LLC (“Hunterbrook”) published a report addressing DexCom, entitled “Dexcom’s Fatal Flaws.” The Hunterbrook report revealed, among other things, that issues and health risks posed by adulterated G7 devices were more severe and widespread than previously disclosed, citing FDA documents it had procured via a Freedom of Information Act request, as well as various comments from doctors, patients and their families, and former DexCom employees. Specifically, the Hunterbrook report found that “G7 users have been hospitalized and died” following inaccurate glucose readings, linking these deadly incidents to adulterated G7 devices and Defendants’ willingness to cut corners to meet margins. On this news, the price of DexCom shares declined by $8.33 per share, or approximately 11%, from $75.78 per share on September 18, 2025 to close at $67.45 on September 19, 2025.
 
The lawsuit alleges that Defendants made false and/or misleading statements and/or failed to disclose that: (i) DexCom had made material design changes to the G6 and G7 unauthorized by the FDA; (ii) the foregoing design changes rendered the G6 and G7 less reliable than their prior iterations, presenting a material health risk to users relying on those devices for accurate glucose readings; (iii) accordingly, Defendants’ purported enhancements to the G7, as well as the device’s reliability, accuracy, and functionality, were overstated; (iv) Defendants downplayed the true scope and severity of the issues and health risks posed by adulterated G7 devices; and (v) all the foregoing subjected DexCom to an increased risk of heightened regulatory scrutiny and enforcement action, as well as significant legal, reputational, and financial harm.
 

Frequently Asked Questions*

  • A.A class action is a lawsuit in which a large number of people (the “class”) have suffered similar harm from the defendant(s)’ unlawful conduct and the plaintiff(s), also known as the “class representative,” stands in for the entire group of similarly injured persons for the duration of the lawsuit and prosecutes the lawsuit on behalf of the entire class. As such, any result obtained by the class representative in the class action lawsuit applies to all of the members of the class. Class action lawsuits are an efficient legal procedure when it would be impractical or expensive for each similarly harmed individual in the class to file their own lawsuit. Class actions enable shareholders to seek recovery from defendant corporations that have much greater resources without having to bear the financial risk.
  • A.Securities class action lawsuits typically allege that defendant(s), typically corporations that issue publicly-traded securities and their officers, misrepresented or concealed material information, which caused the securities to trade at artificially inflated prices when class members purchased the securities. The class members suffer losses when the previously-concealed information is disclosed, and the price of the securities declines. These actions charge the defendants with violations of the Securities Act of 1933 and/or the anti-fraud provisions of the Securities Exchange Act of 1934.
  • A.A class period is a specified time period during which the injury to the class is alleged to have occurred. In a securities class action, this is the period during which the securities in question traded at artificially inflated prices as a result of the misrepresentations or omissions complained of. The class period proposed in a securities fraud class action may change during the course of the litigation as a result of new evidence obtained or rulings by the court.
  • A.A typical securities class action often takes several years to litigate. The actual time it takes to resolve a specific case varies, depending on the complexity of the case, the issues involved, the procedural stage at which the suit is resolved, and other factors.
  • A.The lead plaintiff is the investor that prosecutes the suit on behalf of the other investors. This plaintiff eventually seeks to be appointed as the class representative of the class. Federal securities laws permit any investor who purchased or acquired the covered securities during the class period to seek appointment as lead plaintiff of a securities class action lawsuit within sixty (60) days of the first press release announcing the first filed securities class action. An individual investor, an institutional investor, or groups of investors can seek to be appointed as lead plaintiff.

    Courts generally appoint as lead plaintiff the movant(s) with the greatest financial interest in the relief sought by the proposed class. The lead plaintiff generally can select a law firm of its choice to litigate the securities class action lawsuit as lead counsel for the class. Courts generally appoint the lead plaintiffs’ chosen law firm as lead counsel.
  • A.If you are interested in seeking lead plaintiff appointment, you can contact Kirby McInerney via email at investigations@kmllp.com or submit a contact form via the firm’s website. Critically, the decision to seek lead plaintiff appointment is time sensitive. Class members have sixty (60) days after a securities fraud class action lawsuit is filed to request the court for appointment as lead plaintiff.
  • A.If you have incurred a substantial loss as a result of purchasing the securities covered by a securities class action, acting as a lead plaintiff provides you an opportunity to take an active role in the litigation of the case and to represent the shareholders in the class. The lead plaintiff must stay apprised of the litigation by overseeing court-appointed lead counsel and remaining informed about the progress of the litigation. If the litigation advances into discovery, the lead plaintiff will be required to participate in discovery and potentially provide documents and testimony relating to the investment in question. You will be able to participate in making critical decisions regarding the litigation, including whether to settle the action and at what amount, and the formula to be used in determining how any settlement proceeds are divided among class members.

    An investor’s ability to share in any potential future recovery is not dependent upon serving as lead plaintiff of the securities class action lawsuit. The lead plaintiff is entitled to receive a pro rata share of any classwide settlement or trial recovery. However, as provided for by the Private Securities Litigation Reform Act of 1995, the court will sometimes compensate the lead plaintiff with an additional monetary award for their time and efforts in overseeing the case.
  • A.Any person who purchased the security at issue during the class period is eligible to participate. The attorneys at Kirby McInerney can quickly investigate the facts and advise you on your potential claim, as a lead plaintiff or a class member. Your rights are the same whether you later sold at a loss or have held some or all of your shares in the hope that the price will recover.
  • A.If you do not want to be lead plaintiff, you do not need to take any action at the outset of the litigation in order to participate in the class action as you may remain an absent class member. In the event that the lawsuit is certified by the court as a class action, all members of the class will receive mailed notice informing them of the steps that they will need to take in order to share in any classwide recovery.
  • A.If you are a member of the class, at the point of a classwide settlement or trial recovery, a court-appointed administrator will mail out notifications to class members relating to your claim and the case status. Because securities class actions often take several years, you should be sure to retain your records so that you can provide documentation of your purchases in the event of a settlement or trial recovery.
  • A.To participate in a securities class action, you generally are not required to continue to hold shares of the company after the class period expires. Your standing to participate in the securities class action is derived from your purchase and/or acquisition of shares during the alleged class period. But your decision to sell or otherwise dispose of securities following the class period may impact your damages. Likewise, selling your securities potentially limits your ability to assert other types of claims, including but not limited to shareholder derivative claims.
  • A.Kirby McInerney litigates its class action cases on a contingency fee basis. This means we only get paid if we win the case at trial or if there is a settlement. The Firm does not receive any form of monetary compensation from a client at the outset of litigation or if the lawsuit is unsuccessful in recovering money for investors. Instead, the Firm’s fees are paid out of the recovery if there is a successful resolution to the case and a settlement or judgment is achieved. Attorneys’ fees may vary based on the size of the recovery, the duration and complexity of the litigation, and other factors. Kirby McInerney also generally advances all out-of-pocket costs and court expenses on behalf of its clients. Attorneys’ fees and expense reimbursement requests are subject to court approval. This system helps ensure that many investors with small losses can easily afford to bring class actions to assert their rights.
  • A.Generally, no. Your out-of-pocket losses usually will be greater than recoverable damages. Recoverable damages are affected by the time you purchased and sold your shares, the price of the stock after the class period, and other individual circumstances. Usually, class members are awarded damages that are proportional to the actual individualized harm they suffered.
  • A.As a small investor, if you purchased securities covered by a securities class action during the class period, your rights may already be protected by other investors with more significant losses who have already filed a securities class action. Kirby McInerney’s attorneys are available if you have any further questions about your rights as an investor.

* These "Frequently Asked Questions" are provided by Kirby McInerney LLP for educational and informational purposes only and is not intended and should not be construed as legal advice.

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