ACLX files notice: 15,340 RSUs; insider sold 11,291 shares

ACLX submitted a Section 144 notice reporting proposed sale activity and a recent transaction.

Rhea-AI Filing Summary

ACLX submitted a Section 144 notice reporting proposed sale activity and a recent transaction. The filing lists 15,340 Restricted Stock Units to be sold with an award date of 01/03/2026. It also reports that Michelle Gilson sold 11,291 common shares on 02/17/2026 for $784,782.47.

Insights

Securities Compliance Counsel

Notice of affiliate sale reported; transaction sizes are routine for Form 144 filings.

The filing lists 15,340 Restricted Stock Units dated 01/03/2026 as securities to be sold and documents an actual sale of 11,291 common shares by Michelle Gilson on 02/17/2026 for $784,782.47.

These entries reflect a proposed resale and a completed affiliate sale; cash‑flow treatment and any resale mechanics are not stated in the excerpt. Subsequent public filings would disclose whether the RSUs convert to shares and the timing of any resale.

FAQ

What did ACLX report in this Form 144?

The filing reports 15,340 Restricted Stock Units to be sold dated 01/03/2026 and a sale of 11,291 common shares by Michelle Gilson on 02/17/2026 for $784,782.47.

Who sold shares according to the ACLX filing?

Michelle Gilson is named as the seller of 11,291 common shares on 02/17/2026, with reported proceeds of $784,782.47. The filing lists her address in Redwood City, California.

How many Restricted Stock Units does ACLX list for sale?

The excerpt lists 15,340 Restricted Stock Units with an award or grant date of 01/03/2026. The filing identifies these RSUs as the securities to be sold but does not state conversion or cash‑flow details.

What price did Michelle Gilson receive for her sale?

The filing reports proceeds of $784,782.47 from the sale of 11,291 common shares on 02/17/2026. The excerpt does not show a per‑share price; only aggregate proceeds are provided.

Does the Form 144 disclose who will receive proceeds from the RSU sales?

The excerpt lists the RSUs as "Issuer" securities to be sold but does not state who will receive proceeds or any use of proceeds. The filing text does not specify cash‑flow recipients for the RSU line shown.

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Accepted by SEC EDGAR 02/19/2026 - 08:39 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001930862
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Arcellx, Inc.
SEC File Number	001-41259
Address of Issuer	800 BRIDGE PARKWAY REDWOOD CITY CALIFORNIA 94065
Phone	240-327-0603
Name of Person for Whose Account the Securities are To Be Sold	Gilson Michelle
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	E-TRADE FINANCIAL CORPORATION 3 EDISON DRIV ALPHARETTA GA 30005	8384	572567.73	57917336	02/19/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	01/03/2026	Restricted Stock Units	Issuer			15340	01/03/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Michelle Gilson 800 Bridge Parkway Redwood City CA 94065	Common Stock	02/17/2026	11291	784782.47

144: Remarks and Signature

Remarks	SHARES TO BE SOLD TO COVER WITHHOLDING TAXES UPON VESTING OF RESTRICTED STOCK UNIT AWARDS
Date of Notice	02/19/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Michelle Gilson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)