NASDAQ · ACLX

Arcellx, Inc.

Healthcare · Biotechnology

$115.07

Up+$0.02 (+0.02%)

Updated Sep 11, 2026, 4:45 AM

SID Score

5.4/10

Composite research score

Smart Money

58/100

Neutral

Market cap: 6.58B
P/E ratio: -27.99
Dividend yield: 0.00%
52-week range: $114.23 – $115.13
Volume: 16.12M
Avg. volume: 2.16M

Price performance

ACLX price history

1M range · 0 trading sessions · Daily adjusted prices

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Latest ACLX news

The latest Smart Investors Daily articles mentioning ACLX.

institutionalFeb 25, 2026

T. Rowe Price Investment Management, Inc. Initiates New Position in Arcellx, Inc. Common Stock (ACLX)

Latest ACLX news

The latest Smart Investors Daily articles mentioning ACLX.

Stock researchResearch & News · SEC Filings

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Research & News

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ACLX research

SEC Filings

Recent regulatory filings and source documents.

ACLX SEC filings
Filed	Form	Description	Accepted	Document
Apr 28, 2026	8-K	Form 8-K - Current report - Item 2.01 Item 3.01 Item 3.03 Item 5.01 Item 5.02 Item 5.03 Item 9.01	—	Open source
Apr 24, 2026	10-K/A	Form 10-K/A - Annual report [Section 13 and 15(d), not S-K Item 405]: [Amend]	—	Open source
Mar 4, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Feb 26, 2026	10-K	Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]	—	Open source
Feb 23, 2026	8-K	Form 8-K - Current report - Item 1.01 Item 7.01 Item 9.01	—	Open source
Feb 13, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Feb 13, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Jan 20, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Jan 14, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Jan 13, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Jan 12, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Dec 8, 2025	8-K	Form 8-K - Current report - Item 8.01 Item 9.01	—	Open source
Nov 17, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Nov 5, 2025	10-Q	Form 10-Q - Quarterly report [Sections 13 or 15(d)]	—	Open source
Nov 5, 2025	8-K	Form 8-K - Current report - Item 2.02 Item 9.01	—	Open source
Oct 15, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Oct 6, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Sep 30, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Sep 29, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Sep 26, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Sep 19, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 29, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 14, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 7, 2025	10-Q	Form 10-Q - Quarterly report [Sections 13 or 15(d)]	—	Open source
Aug 7, 2025	8-K	Form 8-K - Current report - Item 2.02 Item 9.01	—	Open source
Jun 11, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 30, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 30, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 30, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 30, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 30, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 30, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 30, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 28, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 28, 2025	8-K	Form 8-K - Current report - Item 5.07	—	Open source
May 20, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
May 14, 2025	8-K	Form 8-K - Current report - Item 8.01 Item 9.01	—	Open source
May 8, 2025	10-Q	Form 10-Q - Quarterly report [Sections 13 or 15(d)]	—	Open source
May 8, 2025	8-K	Form 8-K - Current report - Item 2.02 Item 9.01	—	Open source
Apr 29, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Apr 17, 2025	DEF 14A	Form DEF 14A - Other definitive proxy statements	—	Open source
Apr 8, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Mar 20, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Mar 20, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Mar 20, 2025	8-K	Form 8-K - Current report - Item 5.02 Item 7.01 Item 9.01	—	Open source
Mar 18, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Feb 27, 2025	8-K	Form 8-K - Current report - Item 2.02 Item 9.01	—	Open source
Feb 27, 2025	10-K	Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]	—	Open source
Feb 27, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Feb 26, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source

Filed

Form

Description

Accepted

Document

Apr 28, 2026

8-K

Form 8-K - Current report - Item 2.01 Item 3.01 Item 3.03 Item 5.01 Item 5.02 Item 5.03 Item 9.01

—

Open source

Apr 24, 2026

10-K/A

Form 10-K/A - Annual report [Section 13 and 15(d), not S-K Item 405]: [Amend]

—

Open source

Mar 4, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Feb 26, 2026

10-K

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

—

Open source

Feb 23, 2026

8-K

Form 8-K - Current report - Item 1.01 Item 7.01 Item 9.01

—

Open source

Feb 13, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Feb 13, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Jan 20, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Jan 14, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Jan 13, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Jan 12, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Dec 8, 2025

8-K

Form 8-K - Current report - Item 8.01 Item 9.01

—

Open source

Nov 17, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Nov 5, 2025

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

—

Open source

Nov 5, 2025

8-K

Form 8-K - Current report - Item 2.02 Item 9.01

—

Open source

Oct 15, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Oct 6, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Sep 30, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Sep 29, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Sep 26, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Sep 19, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 29, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 14, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 7, 2025

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

—

Open source

Aug 7, 2025

8-K

Form 8-K - Current report - Item 2.02 Item 9.01

—

Open source

Jun 11, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 30, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 30, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 30, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 30, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 30, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 30, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 30, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 28, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 28, 2025

8-K

Form 8-K - Current report - Item 5.07

—

Open source

May 20, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

May 14, 2025

8-K

Form 8-K - Current report - Item 8.01 Item 9.01

—

Open source

May 8, 2025

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

—

Open source

May 8, 2025

8-K

Form 8-K - Current report - Item 2.02 Item 9.01

—

Open source

Apr 29, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Apr 17, 2025

DEF 14A

Form DEF 14A - Other definitive proxy statements

—

Open source

Apr 8, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Mar 20, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Mar 20, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Mar 20, 2025

8-K

Form 8-K - Current report - Item 5.02 Item 7.01 Item 9.01

—

Open source

Mar 18, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Feb 27, 2025

8-K

Form 8-K - Current report - Item 2.02 Item 9.01

—

Open source

Feb 27, 2025

10-K

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

—

Open source

Feb 27, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Feb 26, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

T. Rowe Price Investment Management, Inc. Initiates New Position in Arcellx, Inc. Common Stock (ACLX)

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T. Rowe Price Investment Management, Inc. Initiates New Position in Arcellx, Inc. Common Stock (ACLX)