Nantahala Capital Management Increases Stake in Assertio Holdings to 10.74%

On April 7, 2026, Nantahala Capital Management, LLC, along with Wilmot B. Harkey and Daniel Mack, filed a Schedule 13G/A reporting a significant stake in Assertio Holdings, Inc. (ASRT). The filing indicates that the reporting persons collectively beneficially own 692,335 shares of common stock, representing a 10.74% ownership stake in the company. This position represents a substantial increase from the previously reported 0.0% ownership. The shares are held by various funds and separately managed accounts under the control of Nantahala Capital Management, with Blackwell Partners LLC - Series A identified as a specific entity with significant economic interest. The reporting persons have shared voting and dispositive power over all reported shares. The filing was made under Rule 13d-1(b), certifying that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. The ownership percentage is based on 6,445,161 shares outstanding as reported in the issuer's most recent Form 10-K.