Arcellx, Inc. — Director's Dealing 2024

Jul 11, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Arcellx, Inc. (ACLX)
CIK: 0001786205
Period of Report: 2024-07-09

Reporting Person: Patel Kavita (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-07-09	Common Stock	M	1500	$6.66	Acquired	1500	Direct
2024-07-09	Common Stock	S	852	$56.2332	Disposed	648	Direct
2024-07-09	Common Stock	S	648	$57.1549	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-07-09	Stock Option (right to buy)	$6.66	M	1500	Disposed	2031-12-07	Common Stock (1500)	Direct

Footnotes

F1: The sale of shares reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person on March 28, 2024.

F2: Represents the weighted average share price of an aggregate total of 852 shares sold in the price range of $55.81 to $56.63 by the Reporting Person. The Reporting Person undertakes to provide upon request by the Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F3: Represents the weighted average share price of an aggregate total of 648 shares sold in the price range of $56.83 to $57.59 by the Reporting Person. The Reporting Person undertakes to provide upon request by the Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F4: Shares issued pursuant to the Issuer's 2017 Equity Incentive Plan (the "2017 Plan"). Subject to the Reporting Person continuing to be a Service Provider (as defined in the 2017 Plan) through each applicable date, twenty-five percent (25%) of the shares subject to the option shall vest on the one (1) year anniversary of the Vesting Commencement Date, and one forty-eighth (1/48th) of the shares subject to the option shall vest each month thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month). "Vesting Commencement Date" shall mean December 1, 2021.