Nantahala Capital Management Establishes 5.68% Position in Rallybio Corporation

Nantahala Capital Management, LLC, along with its managing members Wilmot B. Harkey and Daniel Mack, filed a Schedule 13G on May 15, 2026, reporting a new 5.68% stake in Rallybio Corporation (RLYB). As of the event date on March 31, 2026, the reporting persons collectively held 300,635 shares of common stock. The filing indicates that Nantahala Capital Management, LLC serves as an investment adviser, and the shares are held by funds and separately managed accounts under its control. Each of the reporting persons shares voting and dispositive power over the entire reported amount. The investment was made in the ordinary course of business and not for the purpose of changing or influencing the control of the issuer. This filing marks a significant new position for the investment firm in the clinical-stage biotechnology company, surpassing the 5% beneficial ownership threshold that triggers public disclosure requirements under SEC Rule 13d-1(b).