ROCKET PHARMACEUTICALS, INC.

In June 2025, the Company entered into a settlement agreement with Lexeo Therapeutics, Inc. (“Lexeo”) to resolve all claims in ongoing litigation between the parties in the United States District Court for the Southern District of New York. The litigation involved allegations by the Company of trade secret misappropriation and tortious interference, and counterclaims by Lexeo including correction of inventorship, breach of contract, and trade secret misappropriation. As part of a comprehensive resolution, Rocket also entered into separate settlement agreements on the same day with certain individuals formerly affiliated with the Company, who were also named in the litigation.

Under the terms of the settlement agreement between the Company and Lexeo, the litigation has been resolved amicably and fully, and without admission of liability by any party. For the three and nine months ended September 30, 2025, the gain or loss in connection with this settlement agreement was not material.

On June 11, 2025 and July 18, 2025, two stockholders filed putative securities class action lawsuits against us and certain of our executive officers in the United States District Court for the District of New Jersey, purportedly on behalf of classes of the Company’s investors who purchased or otherwise acquired the Company’s common stock between February 27, 2025 and May 26, 2025 and between September 17, 2024 and May 26, 2025, respectively. The complaints allege violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder in connection with various public statements made by the Company regarding its Phase 2 clinical trial for RP-A501 for Danon disease. The actions seek unspecified damages, costs and expenses, including attorneys’ fees. On September 9, 2025, the Court consolidated the two pending putative securities class action lawsuits, appointed two stockholders as co-lead plaintiffs, and approved their selection of co-lead counsel. Pursuant to a stipulation approved by the Court on September 22, 2025, the co-lead plaintiffs will have until November 18, 2025 to file a consolidated amended complaint. The Company intends to vigorously defend against such allegations. Given the nature of the cases, including that the proceedings are in their early stages, the Company is unable to predict the ultimate outcome of the cases or estimate the range of potential loss, if any.

On October 22, 2025, a putative derivative action was filed in the District of New Jersey, naming as Defendants certain of our officers and present or former directors of the Company. The Complaint (which names the Company as a nominal defendant) alleges that the Defendants engaged in wrongful conduct during the period from September 17, 2024 through May 26, 2025. The allegations in the complaint largely parallel the allegations made in the previously filed putative securities class action complaints, with some additional allegations regarding a supposed lack of internal controls and purported insider trading. The Complaint seeks declaratory relief, an award of damages to the Company, an order directing the Company and the individual defendants to institute certain requested corporate governance reforms, restitution from the individual defendants, and costs and disbursements related to the lawsuit. The Company intends to vigorously defend the litigation. Given the nature of the litigation, including the fact that the litigation is in its early stages, the Company is unable to predict the ultimate outcome of the litigation or estimate the range of potential loss, if any.

From time to time, the Company may be subject to various legal proceedings and claims that arise in the ordinary course of its business activities. Although the results of litigation and claims cannot be predicted with certainty, the Company does not believe it is party to any other claim or litigation the outcome of which, if determined adversely to the Company, would individually or in the aggregate be reasonably expected to have a material adverse effect on its business. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources, and other factors.