Arcellx, Inc.

ACLX

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0001193125-26-092135
Filing date: Mar 4, 2026
Earliest execution date: Mar 4, 2026
Reporting Owners: Elghandour Rami (Officer)

Summary

Type

Neutral

Net shares

-101,164

% of shares

-12.75%

Amount (USD)

$0

Insider confidence score

27.5 out of 100

Positive

  • Minimal sell amount (<$10K)

Negative

  • Large discretionary sell (≥1% of shares)

Stock transactions

Transaction 1

Security

Common Stock

Action

Grant

Date

2026-03-04

Code

G

Net shares

-101,164.0

Acquired/Disposed

Disposed

Shares Owned Before

276,051.0

Shares Owned After

174,887.0

Filing's footnotes

1. On March 4, 2026, the Reporting Person transferred, for no consideration, 101,164 shares to a family charitable foundation of which the Reporting Person serves as the President. The Reporting Person has voting and investment power over all securities owned by the foundation.

2. Shares held by a spousal lifetime access non-grantor trust, of which the Reporting Person's spouse is the beneficiary and for which the Reporting Person may be deemed to have Section 16 beneficial ownership. The Reporting Person disclaims beneficial ownership except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares for Section 16 or any other purpose.

3. Shares held by a spousal lifetime access non-grantor trust of which the Reporting Person is a beneficiary and for which the Reporting Person may be deemed to have Section 16 beneficial ownership. The Reporting Person disclaims beneficial ownership except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares for Section 16 or any other purpose.

This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.