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Company Analysis

ACLX Insider Trading

Arcellx, Inc. | Biological Products, (No Diagnostic Substances)

Comprehensive Trading Performance Summary

The investment history of corporate insiders at Arcellx, Inc. provides a unique lens into the internal conviction of the company's leadership. By analyzing SEC Form 4 filings, investors can track how directors and officers are allocating their own capital. High-conviction buying often signals that management believes the current market price significantly undervalues future growth prospects, while strategic selling might occur for personal liquidity or portfolio diversification. Monitoring these shifts in ownership is essential for understanding the alignment between management and shareholders in the Biological Products, (No Diagnostic Substances) sector.

Transactions on Chart

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Filing Date Trade Date Reporting Person Relationship Type Price Qty Total, $ Owned After Change, %
2026-02-28 03:48 2026-02-27 Elghandour Rami Director, Officer - SEE REMARKS OPT+S $113.92 89,916 $10,243,267 276,051 0.0%
2026-02-26 03:51 2026-02-25 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $113.82 11,219 $1,276,954 33,938 0.0%
2026-02-20 02:26 2026-02-19 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $68.29 8,384 $572,568 45,157 0.0%
2026-02-19 01:19 2026-02-17 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $69.51 11,291 $784,782 53,541 0.0%
2026-01-21 03:59 2026-01-20 Lubner David Charles Director OPT+S $75.00 6,000 $450,000 21,659 0.0%
2026-01-15 03:38 2026-01-14 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $68.51 5,882 $402,997 23,749 0.0%
2026-01-14 05:20 2026-01-13 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $65.51 7,437 $487,213 29,631 0.0%
2026-01-13 05:32 2026-01-12 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $64.15 6,131 $393,286 37,068 0.0%
2025-11-18 03:15 2025-11-17 Heery Christopher Officer - CHIEF MEDICAL OFFICER SELL $90.00 340 $30,600 284 -54.5%
2025-10-16 02:28 2025-10-15 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER SELL $91.04 5,364 $488,315 8,466 -38.8%
2025-10-07 02:21 2025-10-03 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER SELL $86.04 5,946 $511,603 13,830 -30.1%
2025-10-01 03:16 2025-09-30 Heery Christopher Officer - CHIEF MEDICAL OFFICER SELL $81.28 21,034 $1,709,723 624 -97.1%
2025-09-30 02:39 2025-09-29 Heery Christopher Officer - CHIEF MEDICAL OFFICER SELL $80.16 73 $5,852 21,658 -0.3%
2025-09-27 02:45 2025-09-26 Heery Christopher Officer - CHIEF MEDICAL OFFICER SELL $80.12 12,396 $993,155 21,731 -36.3%
2025-09-20 02:22 2025-09-18 Heery Christopher Officer - CHIEF MEDICAL OFFICER SELL $80.01 3,643 $291,468 34,127 -9.6%
2025-06-12 00:37 2025-06-10 Patel Kavita Director OPT+S $67.36 1,500 $101,040 0 0.0%
2025-05-29 03:18 2025-05-27 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $64.14 12,235 $784,776 19,776 0.0%
2025-05-21 02:58 2025-05-20 Patel Kavita Director OPT+S $58.43 1,500 $87,645 0 0.0%
2025-04-30 01:34 2025-04-29 Patel Kavita Director OPT+S $64.20 1,500 $96,300 0 0.0%
2025-04-09 02:31 2025-04-08 Patel Kavita Director OPT+S $57.50 1,500 $86,250 0 0.0%
2025-03-19 02:01 2025-03-18 Patel Kavita Director OPT+S $71.64 1,500 $107,460 0 0.0%
2025-02-27 04:13 2025-02-26 Elghandour Rami Director, Officer - SEE REMARKS OPT+S $62.02 38,300 $2,375,515 149,186 0.0%
2025-02-26 03:09 2025-02-25 Patel Kavita Director OPT+S $63.16 1,500 $94,740 0 0.0%
2025-02-25 04:00 2025-02-24 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $63.79 10,155 $647,772 37,486 0.0%
2025-02-05 05:17 2025-02-04 Patel Kavita Director OPT+S $64.57 1,500 $96,855 0 0.0%
2025-01-15 03:17 2025-01-14 Patel Kavita Director OPT+S $65.87 1,500 $98,801 0 0.0%
2025-01-11 05:38 2025-01-07 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $74.69 7,783 $581,315 25,085 0.0%
2025-01-11 05:36 2025-01-07 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $75.24 18,009 $1,355,024 9,582 0.0%
2025-01-11 05:31 2025-01-03 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $78.36 5,950 $466,227 32,868 0.0%
2025-01-11 05:28 2025-01-03 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $78.36 11,243 $880,974 27,591 0.0%
2025-01-11 05:34 2025-01-07 Elghandour Rami Director, Officer - SEE REMARKS OPT+S $74.69 30,311 $2,263,941 117,275 0.0%
2025-01-11 05:25 2025-01-03 Elghandour Rami Director, Officer - SEE REMARKS OPT+S $78.36 30,223 $2,368,199 147,586 0.0%
2025-01-07 05:54 2025-01-03 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $78.40 10,604 $831,379 28,230 0.0%
2025-01-07 05:52 2025-01-03 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $78.40 6,362 $498,796 32,456 0.0%
2025-01-07 05:51 2025-01-03 Elghandour Rami Director, Officer - SEE REMARKS OPT+S $78.40 28,633 $2,244,896 149,176 0.0%
2024-12-27 04:42 2024-12-24 Patel Kavita Director OPT+S $76.97 1,500 $115,451 0 0.0%
2024-12-06 01:58 2024-12-03 Patel Kavita Director OPT+S $91.88 1,500 $137,818 0 0.0%
2024-11-20 02:46 2024-11-15 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $88.87 1,761 $156,508 0 0.0%
2024-11-15 00:37 2024-11-12 Patel Kavita Director OPT+S $106.33 1,500 $159,495 0 0.0%
2024-11-13 04:31 2024-11-08 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $100.55 12,354 $1,242,170 1,761 0.0%
2024-11-13 04:30 2024-11-07 Patel Kavita Director OPT+S $103.90 57,479 $5,971,809 0 0.0%
2024-10-23 01:48 2024-10-22 Patel Kavita Director OPT+S $89.69 1,500 $134,535 0 0.0%
2024-10-03 23:00 2024-10-01 Patel Kavita Director OPT+S $82.24 1,500 $123,360 0 0.0%
2024-09-18 03:54 2024-09-17 Gilson Michelle Officer - CHIEF FINANCIAL OFFICER OPT+S $77.73 15,000 $1,165,880 6,915 0.0%
2024-09-13 01:27 2024-09-10 Patel Kavita Director OPT+S $74.41 1,500 $111,615 0 0.0%
2024-09-07 00:48 2024-09-05 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $70.02 3,421 $239,526 9,278 0.0%
2024-09-04 04:33 2024-09-03 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $67.03 27,451 $1,840,054 9,278 0.0%
2024-08-28 23:54 2024-08-26 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $71.13 21,684 $1,542,275 9,278 0.0%
2024-08-22 23:01 2024-08-20 Patel Kavita Director OPT+S $65.88 1,500 $98,820 0 0.0%
2024-08-19 23:39 2024-08-16 Heery Christopher Officer - CHIEF MEDICAL OFFICER OPT+S $65.05 5,450 $354,526 9,278 0.0%
SHOW ENTRIES

How to Interpret $ACLX Trades

Not every insider transaction in Arcellx, Inc. is a signal for immediate action. Professional investors look for "cluster buying"—when multiple executives simultaneously purchase $ACLX shares on the open market. It is crucial to distinguish between scheduled sales (under Rule 10b5-1) and voluntary increases in ownership, which demonstrate management’s true conviction that the stock is undervalued.

Data Source & Accuracy for ACLX

Insider activity data for Arcellx, Inc. is streamed in real-time directly from the SEC EDGAR system. We analyze raw Form 4 filings, filtering out technical adjustments and complex derivative transactions. This provides a transparent view of how ownership structure is evolving in $ACLX, allowing you to follow the capital of those with the most intimate knowledge of the company.

UNDERSTANDING THE DATA

FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.

TRADE DATE: The actual day the insider executed the purchase or sale in the market.

INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.

OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.

CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.

TRADE TYPES DEFINITIONS

BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.

SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.

OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.