Biohaven Ltd.

From time to time, we may be subject to litigation and claims arising in the ordinary course of business. Such matters are subject to uncertainty and there can be no assurance that such legal proceedings will not have a material adverse effect on our business, results of operations, financial position or cash flows. Please see the matter noted below and within Note 12, "Commitments and Contingencies," to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K. Excluding the matter noted therein, we are not currently a party to any material legal proceedings, and we are not aware of any pending or threatened legal proceeding against us that we believe could have a material adverse effect on our business, operating results, cash flows or financial condition.

Shareholder Complaint

On July 14, 2025, a lawsuit was filed in the United States District Court for the District of Connecticut against Biohaven Ltd. and certain of our officers alleging federal securities law violations on behalf of a putative class of purchasers of our stock between March 24, 2023 and May 14, 2025. cc The complaint alleges that Biohaven and the officer defendants violated Section 10(b) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and Rule 10b-5 based on alleged misstatements or omissions in certain Biohaven press releases and SEC filings concerning, among other things, (i) the outlook for and clinical data supporting troriluzole as a treatment for SCA spinocerebellar ataxia and (ii) opakalim’s efficacy and clinical prospects as a treatment for bipolar disorder. Plaintiffs also claim the individual defendants are liable for the alleged securities violations through derivative “control person” claims under Section 20(a) of the Exchange Act. The defendants have not yet answered or otherwise responded to the complaint.