Nantahala Capital Management Establishes 8.1% Stake in Jack in the Box Inc.

Nantahala Capital Management, LLC, along with its managing members Wilmot B. Harkey and Daniel Mack, has filed a Schedule 13G indicating a significant new ownership stake in Jack in the Box Inc. (JACK). As of March 31, 2026, the reporting persons collectively beneficially own 1,542,715 shares of common stock, representing 8.1% of the company's outstanding shares. This filing marks a substantial increase from a previous position of zero, establishing Nantahala as a major institutional shareholder. The shares are held by various funds and separately managed accounts under Nantahala's control, with the reporting persons sharing voting and dispositive power over the entire position. 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 control of the issuer. This move signals a strong institutional vote of confidence in the fast-food chain's market position and future prospects.