Arcellx, Inc. — Director's Dealing 2022

Feb 7, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Arcellx, Inc. (ACLX)
CIK: 0001786205
Period of Report: 2022-02-03

Reporting Person: Elghandour Rami (Director, See Remarks)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-02-03	Stock Option (right to buy)	$15.00	A	810102	Acquired	2032-02-03	Common Stock (810102)	Direct
2022-02-07	Restricted Stock Unit	$	A	210633	Acquired		Common Stock (210633)	Direct

Footnotes

F1: Subject to the Reporting Person continuing to be a Service Provider (as defined in the Issuer's 2022 Equity Incentive Plan) through each applicable vesting date, one forty-eighth (1/48th) of the shares subject to the option will vest each month following Equity Grant Date on the same day of the month as the Equity Grant Date (or, if there is no corresponding day in a particular month, then the last day of the month) over four (4) years. "Equity Grant Date" shall mean February 3, 2022.

F2: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3: Subject to the Reporting Person continuing to be a Service Provider (as defined in the Issuer's 2022 Equity Incentive Plan) through each applicable vesting date, one-third (1/3rd) of the RSUs subject to the award will vest each year following RSU Grant Date on the same day of the month as the RSU Grant Date (or, if there is no corresponding day in a particular month, then the last day of the month) over three (3) years. "RSU Grant Date" shall mean February 7, 2022.