Rami Elghandour - 04 Mar 2026 Form 4 Insider Report for Arcellx, Inc. (ACLX)

Role
President, CEO and Chairman of the Board, Director
Signature
/s/ Michelle Gilson, as Attorney-in-Fact
Issuer symbol
ACLX
Transactions as of
04 Mar 2026
Net transactions value
$0
Form type
4
Filing time
04 Mar 2026, 20:09:34 UTC
Previous filing
27 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Elghandour Rami President, CEO and Chairman of the Board, Director C/O ARCELLX, INC, 800 BRIDGE PARKWAY, REDWOOD CITY /s/ Michelle Gilson, as Attorney-in-Fact 04 Mar 2026 0001613689

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ACLX Common Stock Gift -101,164 -37% $0.000000* 174,887 04 Mar 2026 Direct F1
holding ACLX Common Stock 198,000 04 Mar 2026 By Trust F2
holding ACLX Common Stock 218,500 04 Mar 2026 By Trust F3
holding ACLX Common Stock 101,164 04 Mar 2026 By Foundation F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 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.
F2 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.
F3 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.

Remarks:

President, CEO and Chairman of the Board