Arcellx (NASDAQ: ACLX) files to withdraw Nasdaq listing

Rhea-AI Filing Summary

Arcellx, Inc. submitted a Form 25 notification to remove its Common Stock from listing and registration on the Nasdaq Stock Market LLC. The filing states the Exchange and the Issuer have each complied with the applicable Nasdaq rules and with 17 CFR 240.12d2-2.

Key Figures

Commission File Number: 001-41259 Document expiration line: March 31, 2018 Issuer telephone: 240-327-0603 +1 more

4 metrics

Commission File Number 001-41259 Form 25 cover line

Document expiration line March 31, 2018 Header line showing an expiration reference

Issuer telephone 240-327-0603 Issuer principal executive office contact

Issuer ZIP code 20878 Issuer address, Gaithersburg, Maryland

Key Terms

Form 25, 17 CFR 240.12d2-2, Section 12(b)

3 terms

Form 25 regulatory

"FORM 25 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION"

A Form 25 is an official filing with the U.S. Securities and Exchange Commission used to remove a company's stock or other security from a national exchange list. Investors should care because delisting often means less visibility, lower trading volume and wider price swings—similar to a product moving from a major supermarket to a small local market, which can make buying, selling and valuing the security more difficult.

17 CFR 240.12d2-2 regulatory

"Pursuant to 17 CFR 240.12d2-2(b) the Exchange has complied with its rules"

A U.S. Securities and Exchange Commission rule that describes the conditions and procedural steps for a security to be removed from public registration or reporting under the Securities Exchange Act of 1934. For investors, it matters because it explains when a company’s shares can stop being subject to regular disclosure and exchange listing rules — similar to knowing when a publicly tracked product will be discontinued and no longer send updates, which affects transparency and liquidity.

Section 12(b) regulatory

"REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT"

Section 12(b) of the U.S. Securities Exchange Act requires securities listed on a national stock exchange to be registered with the U.S. Securities and Exchange Commission (SEC) and to follow regular public reporting and disclosure rules. For investors, a 12(b) listing generally means more routine financial updates, regulatory oversight and easier buying and selling—like a storefront that must display its inventory and prices, making it simpler to inspect and trade the product.

UNITED STATES

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SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 25

NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION
UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number

001-41259

Issuer:	Arcellx, Inc.
Exchange:	Nasdaq Stock Market LLC

(Exact name of Issuer as specified in its charter, and name of Exchange where security is listed and/or registered)

Address:	25 West Watkins Mill Road
	Suite A
	Gaithersburg	MARYLAND	20878
Telephone number:					240-327-0603

(Address, including zip code, and telephone number, including area code, of Issuer's principal executive offices)

Common Stock

(Description of class of securities)

Please place an X in the box to designate the rule provision relied upon to strike the class of securities from listing and registration:

17 CFR 240.12d2-2(a)(1)

17 CFR 240.12d2-2(a)(2)

17 CFR 240.12d2-2(a)(3)

17 CFR 240.12d2-2(a)(4)

Pursuant to 17 CFR 240.12d2-2(b), the Exchange has complied with its rules to strike the class of securities from listing and/or withdraw registration on the Exchange. ¹

Pursuant to 17 CFR 240.12d2-2(c), the Issuer has complied with its rules of the Exchange and the requirements of 17 CFR 240.12d-2(c) governing the voluntary withdrawal of the class of securities from listing and registration on the Exchange.

Pursuant to the requirements fo the Securities Exchange Act of 1934, Nasdaq Stock Market LLC certifies that it has reasonable grounds to believe that it meets all of the requirements for filing the Form 25 and has caused this notification to be signed on its behalf by the undersigned duly authorized person.

2026-04-28	By	Tara Petta		AVP
Date		Name		Title

¹ Form 25 and attached Notice will be considered compliance with the provisions of 17 CFR 240.19d-1 as applicable. See General Instructions.

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does Arcellx's (ACLX) Form 25 say?

It notifies removal of Arcellx's Common Stock from Nasdaq listing and registration. The filing states both Nasdaq and the Issuer complied with Nasdaq rules and the requirements of 17 CFR 240.12d2-2 for voluntary withdrawal.

Who certified the Form 25 for Arcellx (ACLX)?

Nasdaq Stock Market LLC certified the Form 25 and signed it through an authorized representative. The notification is signed on behalf of Nasdaq by Tara Petta, AVP, per the filing text.

Is the delisting described as voluntary in the ACLX filing?

The filing indicates the action follows Nasdaq and the Issuer's compliance with voluntary-withdrawal procedures. It cites compliance with 17 CFR 240.12d2-2(c) governing voluntary withdrawal of listing and registration.

What securities class is affected by Arcellx's Form 25?

The filing identifies the affected class as Common Stock. The Form 25 specifically references removal of the Issuer's Common Stock from listing and registration on Nasdaq.

Does the Form 25 filing state when it was executed or an expiry?

The document includes an expiration reference of March 31, 2018 on a header line. The filing text also provides the issuer's address and telephone number as part of the notification.