bluebird bio, Inc. (NASDAQ: BLUE) (“bluebird bio” or the “Company”) announced that it will proceed with a 1-for-20 reverse stock split (“Reverse Stock Split”) of the Company’s common stock following approval by both its Board of Directors and BLUE stockholders at its reconvened annual meeting held on December 4, 2024. As previously announced, the primary goal of the Reverse Stock Split is to increase the per share market price of the Company’s common stock to regain compliance with Nasdaq’s minimum bid price requirement for continued listing.

The Reverse Stock Split is expected to become effective at 5 p.m., Eastern Time, on December 12, 2024. The common stock is expected to begin trading on a split-adjusted basis when the markets open on December 13, 2024, under the existing trading symbol “BLUE”. The new CUSIP number for the common stock following the Reverse Stock Split will be 09609G 209.

When the Reverse Stock Split is effective, every 20 shares of BLUE common stock issued will be combined automatically into 1 share of common stock. No fractional shares will be issued if, as a result of the Reverse Stock Split, a stockholder would otherwise become entitled to a fractional share because the number of shares of common stock they hold before the Reverse Stock Split is not evenly divisible by the split ratio. Instead, each stockholder will be entitled to receive a cash payment in lieu of a fractional share.

Equiniti Trust Company, LLC (“Equiniti”), formerly American Stock Transfer & Trust Company, LLC (“AST”), is acting as the exchange agent and transfer agent for the Reverse Stock Split. Stockholders holding their shares electronically are not required to take any action to receive post-split 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 about the Reverse Stock Split can be found in bluebird’s definitive proxy filed with the U.S. Securities and Exchange Commission (the “SEC”) on September 26, 2024 and on the Company’s Investor Relations website at http://investor.bluebirdbio.com.