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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1786205	Arcellx Inc.	ACLX	Biological Products, (No Disgnostic Substances) (2836)	472855917

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1789632	Christopher Heery	C/O Arcellx, Inc. 25 West Watkins Mill Road, Suite A Gaithersburg MD 20878	Chief Medical Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2023-02-07	22,555	$0.00	22,555	No	4	M	Direct
Common Stock	Disposition	2023-02-09	6,966	$30.77	15,589	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Restricted Stock Unit	Disposition	2023-02-07	22,555	$0.00	22,555	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
45,111			No	4	M	Direct

Footnotes

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.
Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of RSUs and does not represent a discretionary sale by the Reporting Person.
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.