Kavita Patel - 10 Jun 2025 Form 4 Insider Report for Arcellx, Inc. (ACLX)

Reporting relationship: Director
Issuer ticker: ACLX
Reported as of: 10 Jun 2025
Net transaction value: -$91,050
SEC form: 4
Accepted by SEC: 11 Jun 2025, 17:37:48 UTC
Prior SEC filing: 30 May 2025
Next SEC filing: 13 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ Michelle Gilson, as Attorney-in-Fact

Key filing fact

Kavita Patel filed Form 4 for Arcellx, Inc. (ACLX) on 11 Jun 2025.

Key facts

This page summarizes Kavita Patel's Form 4 filing for Arcellx, Inc. (ACLX).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 11 Jun 2025, 17:37.

Change

Previous filing in this sequence was filed on 30 May 2025.
Current net transaction value: -$91,050.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001670683 Primary reporting owner

Patel Kavita

Relationship: Director
Address: C/O ARCELLX, INC., 800 BRIDGE PARKWAY, REDWOOD CITY
Signature: /s/ Michelle Gilson, as Attorney-in-Fact
Signature date: 11 Jun 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ACLX transaction

Common Stock

Options Exercise

Transaction value: $9,990
Shares: +1,500
Change %
Price: $6.66
Shares after: 1,500
Date: 10 Jun 2025
Ownership: Direct

ACLX transaction

Common Stock

Sale

Transaction value: $101,040
Shares: -1,500
Change %: -100%
Price: $67.36
Shares after: 0
Date: 10 Jun 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ACLX transaction Derivative

Stock Option (right to buy)

Options Exercise

Transaction value: $0
Shares: -1,500
Change %: -5.2%
Price: $0.000000
Shares after: 27,077
Date: 10 Jun 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,500
Exercise price: $6.66
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 2 footnotes

Footnote 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.

Footnote F2

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.