STX Seagate Technology Holdings plc

BEARISH Impact: 6/10 Insider Cluster (1 insider)
Horizon days Filed Mar 13, 2026 Processed 2mo ago
Insider cluster: 2 insiders, $10.0M total
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
Last close $876.77 (close Jun 8) · -128.90% from $383.04 entry (call sign-flipped)
Entry anchored
Mar 12, 03:59 PM ET
via Databento tick
T+1d
+3.93%
call -3.93% · α -2.90%
$398.09
settled 3mo ago
T+5d
+7.17%
call -7.17% · α -9.29%
$410.51
settled 3mo ago
T+20d
+34.00%
call -34.00% · α -30.41%
$513.28
settled 2mo ago
T+60d
+128.90%
call -128.90% · α -117.28%
$876.77
settled yesterday

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

Actionable Insight

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.

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

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
11 reports for STX
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for STX — sortable, filterable
Type Now
Jun 4, 2026
5d ago
Insider Cluster
NEUTRAL ★ 2/10
$921.33 awaiting T+1awaiting T+1—$876.77 (−4.84%)
Jun 2, 2026
7d ago
144
NEUTRAL ★ 2/10
$940.69 $925.99▼ −1.56%▼ −1.96%$876.77 (−6.80%)
May 28, 2026
12d ago
8-K
NEUTRAL ★ 4/10
$880.72 $879.80▼ −0.10%▼ −0.34%$876.77 (−0.45%)
May 21, 2026
19d ago
Insider Cluster
NEUTRAL ★ 2/10
$812.73 $845.76▲ +4.06%▲ +3.48%$876.77 (+7.88%)
May 21, 2026
19d ago
8-K
NEUTRAL ★ 5/10
$810.46 $812.73▲ +0.28%▼ −0.17%$876.77 (+8.18%)
May 7, 2026
4w ago
Insider Cluster
NEUTRAL ★ 3/10
$795.47 $740.84▼ −6.87%▼ −6.81%$876.77 (+10.22%)
May 4, 2026
5w ago
Insider Cluster
NEUTRAL ★ 2/10
$738.54 $771.01▲ +4.40%▲ +3.60%$876.77 (+18.72%)
May 4, 2026
5w ago
Insider Cluster
NEUTRAL ★ 2/10
$738.54 $771.01▲ +4.40%▲ +3.60%$876.77 (+18.72%)
Apr 28, 2026
6w ago
8-K
NEUTRAL ★ 5/10
$643.30 $643.30· 0.00%▼ −1.02%$876.77 (+36.29%)
Mar 13, 2026
12w ago
Insider Cluster
BEARISH ★ 6/10
$383.04 $398.09▼ −3.93%▼ −2.90%$876.77 (−128.90%)
Showing 10 of 11

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