Christopher Heery Sells $291K of Arcellx Inc (ACLX) — SEC Form 4, Sep 19, 2025

Open-Market Net Sale · SEC Form 4

−$291,468

10b5-1 Plan

Equity position changed by -9.7%

Reporting Owner

Christopher Heery

Officer

TXN 2025-09-19 · FILED 2025-09-19

Equity Position 34.1K sh 37,770 → 34,127

Equity Change -9.7% shares held after vs before

Filing Lag 0 business days within 2-day SEC deadline

Form 4 · Statement of Changes in Beneficial Ownership

Arcellx Inc

ACLX CIK 0001786205

Reporting Owner

Name	Relationship
Christopher Heery CIK 0001789632	Officer

Christopher Heery at Arcellx Inc Full insider history

Bought (12 mo) —

Sold (12 mo) $1,314,096

More from this insider at Arcellx Inc

Non-Derivative Securities Transactions

Title	Date	Type	Shares	Price	Net Total	Post-Txn	Ownership
Common StockF1 F2 F3	2025-09-18	S - Sale 10b5-1	3,343 D	$80.01	-$267,468	34,427	Direct
Common StockF1	2025-09-19	S - Sale 10b5-1	300 D	$80.00	-$24,000	34,127	Direct

Footnotes (3)

F1: The sale of shares reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person on March 23, 2025. Show more
F2: Represents the weighted average share price of an aggregate total of 3,343 shares sold in the price range of $80.00 to $80.055 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. Show more
F3: Includes 284 shares acquired under the Issuer's 2022 Employee Stock Purchase Plan on May 14, 2025. Show more

Institutional Holders

Largest by reported value

5%+ Holders · 13D/G 2 filers

Latest Schedule 13D/G per filer; stakes the filer reported closed are left out.

Other insiders at Arcellx Inc

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