ARCELLX, INC.

Arcellx, Inc. is a clinical-stage biotechnology company. The Company is focused on the development of controllable cell therapies for the treatment of patients with cancer and other incurable diseases. The Company’s lead program is a BCMA-targeting ddCAR product candidate called CART-ddBCMA, which is being evaluated in its pivotal Phase II iMMagine-1 trial in patients with relapsed or refractory multiple myeloma (rrMM).

The Company is also developing two clinical-stage ARC-SparX programs in Phase I trials; ACLX-001, which targets BCMA in rrMM, and ACLX-002, which targets CD123 in relapsed or refractory acute myeloid leukemia (AML) and high-risk myelodysplastic syndrome (MDS). Outside of multiple myeloma (MM), the Company advances its wholly owned portfolio of clinical-stage, ACLX-002, and preclinical pipeline programs incorporating its D-Domain technology. D-Domain, is designed to overcome the limitations of traditional Chimeric Antigen Receptor T-cells (CAR-Ts). .