Nature of the Business	6 Months Ended
Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of The Business	1. Nature of the Business Organization Arcellx, Inc. (Arcellx or the Company) was incorporated in Delaware in December 2014 and is headquartered in Gaithersburg, Maryland. The Company is a clinical-stage biopharmaceutical company reimagining cell therapy through the development of innovative therapies for patients with cancer and other incurable diseases. Liquidity The Company has incurred significant operating losses since inception and has an accumulated deficit of $370.0 million as of June 30, 2023. The Company has relied on its ability to fund its operations through private and public equity financings and its recent collaboration and license agreement with Kite Pharma, Inc (Kite), a Gilead Sciences, Inc. (Gilead) company. In January 2023, the Company received in the aggregate $325.0 million in cash which consisted of $100.0 million related to a private placement from the sale of the Company’s common stock to Gilead and a $225.0 million non-refundable, upfront payment related to the closing of its Collaboration and License Agreement (Kite Collaboration Agreement) with Kite. See Note 6 Collaboration Agreement. As of June 30, 2023, the Company had $506.5 million of cash, cash equivalents and marketable securities, which management believes will be sufficient to meet the Company’s anticipated operating and capital expenditure requirements for at least twelve months following the date of issuance of these financial statements.

Nature of the Business

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Nature of the Business

Organization

Arcellx, Inc. (Arcellx or the Company) was incorporated in Delaware in December 2014 and is headquartered in Gaithersburg, Maryland. The Company is a clinical-stage biopharmaceutical company reimagining cell therapy through the development of innovative therapies for patients with cancer and other incurable diseases.

Liquidity

The Company has incurred significant operating losses since inception and has an accumulated deficit of $370.0 million as of June 30, 2023. The Company has relied on its ability to fund its operations through private and public equity financings and its recent collaboration and license agreement with Kite Pharma, Inc (Kite), a Gilead Sciences, Inc. (Gilead) company. In January 2023, the Company received in the aggregate $325.0 million in cash which consisted of $100.0 million related to a private placement from the sale of the Company’s common stock to Gilead and a $225.0 million non-refundable, upfront payment related to the closing of its Collaboration and License Agreement (Kite Collaboration Agreement) with Kite. See Note 6 Collaboration Agreement.

As of June 30, 2023, the Company had $506.5 million of cash, cash equivalents and marketable securities, which management believes will be sufficient to meet the Company’s anticipated operating and capital expenditure requirements for at least twelve months following the date of issuance of these financial statements.