ACLX Arcellx, Inc.

BEARISH Impact: 7/10 Insider Cluster (2 insiders)
Horizon days Filed Feb 25, 2026 Processed 2mo ago
Insider cluster: 2 insiders, $11.5M total
Latest settled — T+20d
ACLX ▲ +0.69% at T+20d
SHORT call ✗ call lost -0.69% · α vs SPY -5.92% · entry $113.76 → $114.54
Next anchor: T+60d due 4d ago
Latest observation: T+44 +45.99% FF3 residual α
Entry anchored
Feb 24, 03:59 PM ET
via Databento tick
T+1d
+0.11%
call -0.11% · α -0.65%
$113.88
settled 3mo ago
T+5d
+0.47%
call -0.47% · α -1.57%
$114.30
settled 3mo ago
T+20d
+0.69%
call -0.69% · α -5.92%
$114.54
settled 2mo ago
T+60d
call — · α —
due 4d ago

Price Chart

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Executive Summary

Two corporate insiders at Arcellx, Inc. (ACLX) sold shares in the past week, including CFO Michelle Gilson, who sold over $1.2 million in stock, and Rami Elghandour, who sold nearly $10.2 million in shares. All transactions were open-market sales at prevailing prices, totaling $11.5 million in aggregate value.

Key Financial Metrics

Direction
selling
Total Value
$11.5M
Insiders
2

Actionable Insight

CFO and another insider selling material amounts of stock simultaneously raises concerns about confidence in near-term prospects; traders should monitor for downward price pressure and any upcoming filings or clinical updates.

Key Facts

  • CFO Michelle Gilson sold 11,219 shares for $1,276,954 in an open-market transaction.
  • Rami Elghandour sold 89,916 shares for $10,243,267 in an open-market transaction.
  • Total insider sales in the past 7 days: $11.5 million.
  • Total sales represent approximately 0.17% of Arcellx's $6.6B market cap.

Financial Impact

$11.5 million in open-market share sales by insiders, including the CFO

insider ownershipinvestor sentimentpotential dilution signal

Risk Factors

  • Insider selling, especially by the CFO, may signal lack of confidence in future performance or valuation.
  • Concentrated selling could lead to increased share supply and downward price momentum.

Market Snapshot

Exchange
Nasdaq

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CONTEXT: Insider Cluster Data (2 trades, 7d window)cluster-ACLX-1772239719951
3 reports for ACLX
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for ACLX — sortable, filterable
Type Now
Apr 28, 2026
25d ago
25-NSE
BEARISH ★ 9/10
$115.07 $115.07· 0.00%▼ −0.01%
Apr 24, 2026
29d ago
10-K/A
NEUTRAL ★ 2/10
$115.07 $115.07· 0.00%▲ +0.49%
Feb 25, 2026
12w ago
Insider Cluster
BEARISH ★ 7/10
$113.76 $113.88▼ −0.11%▼ −0.65%
Showing 3 of 3

US Market Status

Market Closed — Opens Tue (34h 49m)

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