Rallybio Announces Reverse Stock Split of Common Stock

Key Terms

reverse stock split financial

A reverse stock split is when a company reduces the number of its shares outstanding, making each share more valuable. For example, if you own 100 shares worth $1 each, a 1-for-10 reverse split would turn your 100 shares into 10 shares worth $10 each. Companies often do this to boost their stock price and appear more stable to investors.

par value financial

Par value is the fixed amount printed on a bond or stock that represents its original value when issued. It’s like the face value of a coin or bill—what the issuer promises to pay back or the starting price of a stock—though it often doesn’t change with market prices. It matters because it helps determine certain financial details, like how much the company will pay back at maturity.

cusip regulatory

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

exchange agent financial

An exchange agent is a third party appointed to handle the practical steps when securities are being swapped, such as during mergers, tender offers, or restructurings. Think of it as a trusted post office that collects old shares, verifies ownership, completes required paperwork and regulatory filings, and delivers the new shares or cash to investors; its efficiency and accuracy affect how quickly and safely investors receive the value they're owed.

book-entry financial

A book-entry is an electronic record that shows who legally owns a share, bond or other security instead of a paper certificate. Think of it like a bank ledger entry that tracks ownership and transfers; it makes buying, selling, dividend payments and ownership checks faster, cheaper and less risky for investors because nothing physical needs to be moved or stored.

NEW HAVEN, Conn.--(BUSINESS WIRE)-- Rallybio Corporation (Nasdaq: RLYB) will effect a one-for-eight reverse stock split of its issued and outstanding common stock. Stockholders of Rallybio approved an amendment to Rallybio’s Amended and Restated Certificate of Incorporation (the “Amendment”) to effect the reverse stock split at a Special Meeting of Stockholders held on January 26, 2026. The reverse stock split is intended to give Rallybio greater flexibility in considering and planning for future potential business needs and to increase the per share trading price of the Rallybio common stock to enable Rallybio to satisfy the minimum price requirement for continued listing on the Nasdaq Capital Market. Pursuant to the Amendment, the reverse stock split will be effective at 12:01 a.m., Eastern Time, on February 6, 2026. Rallybio expects that upon the opening of trading on February 6, 2026, its common stock will trade on the Nasdaq Capital Market on a split-adjusted basis under the current trading symbol “RLYB” and the new CUSIP number 75120L 209.

The reverse stock split affects all issued and outstanding shares of Rallybio’s common stock. The par value of Rallybio’s common stock will remain unchanged at $0.0001 per share after the reverse stock split. The reverse stock split affects all stockholders uniformly and will not alter any stockholder’s percentage interest in Rallybio’s equity, except to the extent that the reverse stock split results in some stockholders receiving cash in lieu of any fractional shares as described below.

No fractional shares will be issued in connection with the reverse split. Stockholders who would otherwise be entitled to receive a fractional share will instead receive a cash payment in lieu of such fractional shares equal to the fair market value of such fractional shares, as determined in good faith by Rallybio’s Board of Directors.

Computershare Trust Company, N.A. (“Computershare”) is acting as the exchange agent and transfer agent for the reverse stock split. Stockholders holding their shares electronically in book-entry form are not required to take any action to receive post-split shares. Computershare will provide instructions to stockholders with physical certificates regarding the process for exchanging their pre-split stock certificates for book entry of the appropriate number of post-split shares and receiving payment for any fractional shares. Stockholders owning shares through a bank, broker or other nominee will have their positions adjusted to reflect the reverse stock split and will receive payment for any fractional shares in accordance with their respective bank’s, broker’s, or nominee’s particular processes. Additional information regarding the reverse stock split can be found in Rallybio’s definitive proxy statement filed with the Securities and Exchange Commission on January 2, 2026.

About Rallybio

Rallybio (NASDAQ: RLYB) is a clinical-stage biotechnology company with a mission to develop and commercialize life-transforming therapies for patients with severe and rare diseases. Rallybio has built a pipeline of promising product candidates aimed at addressing diseases with unmet medical need in areas of complement dysregulation and hematology. The Company’s lead program, RLYB116, is a differentiated C5 inhibitor with the potential to treat diseases of complement dysregulation, with an initial focus on immune platelet transfusion refractoriness (PTR) and refractory antiphospholipid syndrome (APS). Rallybio’s pipeline also includes RLYB332, a preclinical long-acting matriptase-2 antibody for the treatment of diseases of iron overload. Rallybio is headquartered in New Haven, Connecticut. For more information, please visit www.rallybio.com and follow us on LinkedIn.

Forward-Looking Statements

This press release contains forward-looking statements that are made pursuant to the safe harbor provisions of the federal securities laws, including statements containing the words “may,” “believes,” “expects,” “anticipates,” “hopes,” “intends,” “plans,” “forecasts,” “estimates,” “will,” “establish,” “potential,” and similar expressions are intended to identify forward-looking statements. These forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially. These risks and uncertainties include, among others, the factors described under the Risk Factors section of our most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission and available on our website at www.rallybio.com. Rallybio cautions investors not to place considerable reliance on the forward-looking statements contained in this release. These statements speak only as of the date of this press release, and Rallybio undertakes no obligation to update or revise the statements, other than to the extent required by law. All forward-looking statements are expressly qualified in their entirety by this cautionary statement.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260203651741/en/

Investor Contacts

Samantha Tracy

Rallybio Corporation

(475) 47-RALLY (Ext. 282)

investors@rallybio.com



Kevin Lui

Precision AQ

(212) 698-8691

kevin.lui@precisionaq.com



Media Contact

media@rallybio.com

Source: Rallybio Corporation