Insider Cluster (1 insider) ·Filed Mar 13, 2026

STX

Seagate Technology Holdings plc
BEARISH
Impact 6/10
Horizondays Processed6mo ago
Insider cluster: 2 insiders, $10.0M total
Actionable Insight ▼ Bearish

Monitor for follow-up trades by other insiders or changes in company guidance; a single large CEO sale may be routine diversification, but at this magnitude, it warrants attention ahead of earnings or strategic updates.

DirectionBearish
Confidencehigh
Horizondays
Final — all horizons settled through T+60d
STX ▲ +128.90% at T+60d
SHORT call ✗ call lost -128.90% · α vs SPY -117.28% · entry $383.04 → $876.77
Entry anchored
Mar 12, 03:59 PM ET
via exchange tick
T+1d
+3.93%
call -3.93% · α -2.90%
$398.09
settled 7mo ago
T+5d
+7.17%
call -7.17% · α -9.29%
$410.51
settled 7mo ago
T+20d
+34.00%
call -34.00% · α -30.41%
$513.28
settled 6mo ago
T+60d
+128.90%
call -128.90% · α -117.28%
$876.77
settled 4mo ago

Price Chart

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Executive Summary

Seagate's CEO, William D. Mosley, sold $10.0 million worth of shares in a single open-market transaction. This represents a material insider sale from the top executive, though it falls below 0.1% of the company's $89.7B market cap.

Key Financial Metrics

Direction
selling
Total Value
$10.0M
Insiders
1

Key Facts

  • CEO William D. Mosley sold 24,584 shares at $406.77 per share for a total of $10,000,033.68
  • Transaction was an open-market sale (Form 4 code 'S')
  • Single insider involved — the CEO, representing the highest level of corporate leadership
  • Total sale value is $10.0M, representing approximately 0.011% of Seagate's $89.7B market cap

Financial Impact

$10.0 million in open-market share sales by the CEO

insider ownershipdilutioninvestor sentiment

Risk Factors

  • Perception of insider pessimism given the size and leadership position
  • Potential for negative market reaction if no clear rationale is provided

Market Snapshot

Exchange
Nasdaq

Investment Themes

Software & IT

Documents Analyzed

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

DocumentAccession Number
CONTEXT: Insider Cluster Data (1 trades, 7d window)cluster-STX-1774297238394
23 reports for STX
Performance horizon
67% Hit rate 2 of 3 directional calls best @ T+5▲ +9.70%Feb 24, 2026
Filters
Rows
Reports for STX — sortable, filterable
TypeNow
Sep 11, 2026
20d ago
Insider Cluster
NEUTRAL ★ 4/10
$805.55 $877.33▲ +8.91%▲ +8.80%$823.86 (+2.27%)
Sep 11, 2026
20d ago
Insider Cluster
BEARISH ★ 4/10
$805.55 $877.33▼ −8.91%▼ −8.80%$823.86 (−2.27%)
Sep 11, 2026
20d ago
Insider Cluster
NEUTRAL ★ 2/10
$805.55 $877.33▲ +8.91%▲ +8.80%$823.86 (+2.27%)
Sep 9, 2026
23d ago
8-K
NEUTRAL ★ 4/10
$885.92 $783.18▼ −11.60%▼ −10.94%$823.86 (−7.01%)
Sep 3, 2026
29d ago
Insider Cluster
BEARISH ★ 6/10
$798.61 $830.17▼ −3.95%▼ −5.10%$823.86 (−3.16%)
Aug 26, 2026
5w ago
Insider Cluster
NEUTRAL ★ 4/10
$846.37 $808.54▼ −4.47%▼ −4.35%$823.86 (−2.66%)
Aug 24, 2026
5w ago
Insider Cluster
NEUTRAL ★ 2/10
$794.65 $828.38▲ +4.24%▲ +3.78%$823.86 (+3.68%)
Aug 14, 2026
7w ago
Insider Cluster
NEUTRAL ★ 2/10
$973.44 $850.00▼ −12.68%▼ −11.31%$823.86 (−15.37%)
Aug 11, 2026
7w ago
Insider Cluster
NEUTRAL ★ 3/10
$820.52 $903.68▲ +10.13%▲ +10.54%$823.86 (+0.41%)
Aug 4, 2026
8w ago
Insider Cluster
NEUTRAL ★ 2/10
$837.66 $878.21▲ +4.84%▲ +4.49%$823.86 (−1.65%)
Showing 10 of 23

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Report published Mar 23, 2026