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Gilson Michelle's Form 4 filing

Arcellx, Inc. (ACLX) · filed Feb 18, 2026

Accession no.
0001193125-26-057469
Filed
Feb 18, 2026
Trade date
Jan 2-Feb 17, 2026
Filing delay
47 daysLate
Rule 10b5-1 plan
Not checked

This filing lists 3 non-derivative transactions. Open-market sales total $784.8K. It was filed 47 days after the trade, past the 2-business-day deadline.

Reporting owners

A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.

Reporting owners on this filing
OwnerRelationship to the company
Gilson MichelleCIK 0001930862Officer (CHIEF FINANCIAL OFFICER)

Non-derivative securities (Table I)

Acquisitions and disposals of common stock and similar shares, one row per line on the filing.

Non-derivative transactions
Trade dateSecurityTransactionSharesPriceValueShares afterOwnershipFlags
Jan 2, 2026Common StockMOption exerciseAcquired+20,496$0.00$028,962Direct
Feb 17, 2026Common StockSSaleDisposed−7,141$69.21F3−$494,228.6157,691Direct
Feb 17, 2026Common StockSSaleDisposed−4,150$70.01F4−$290,541.553,541Direct

Footnotes and remarks

Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.

F3

Represents the weighted average share price of an aggregate total of 7,141 shares sold in the price range of $68.69 to $69.68 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.

Referenced by the price of 1 transaction in Table I.

F4

Represents the weighted average share price of an aggregate total of 4,150 shares sold in the price range of $69.69 to $70.55 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.

Referenced by the price of 1 transaction in Table I.

Read the full filing on SEC EDGAR (opens in a new tab)