The coordinated nature and identical pricing of the CEO/CFO/CTO sales strongly suggest a pre-planned 10b5-1 program, not a bearish signal. The dollar amount is trivial relative to the $186B market cap. No action warranted; monitor for any unplanned insider buying or a material change in the company's business outlook.
Price Chart
Executive Summary
A cluster of insider sales at Seagate Technology (STX) totaling $13.97M was filed, involving the CEO, CFO, CCO, CTO, and CLO. The CEO alone sold $9.6M worth of shares. While the dollar amount is significant, the sales appear to be part of a pre-arranged 10b5-1 plan or routine diversification, as they were executed on the same day (Aug 21) at identical prices for the CEO, CFO, and CTO, and the CLO's sales were tied to option exercises. The historical calibration for this filing type shows poor predictive power for bullish outcomes at this score level, reinforcing a neutral read.
Key Financial Metrics
Key Facts
- Total insider sales of $13.97M over a 7-day window.
- CEO William Mosley sold $9.6M (11,300 shares) at $849.35.
- CFO Gianluca Romano sold $2.3M (2,700 shares) at $849.35.
- CCO Ban Seng Teh sold $1.52M (1,800 shares) at $861.81.
- CTO John Christopher Morris sold $517K (608.5 shares) at $849.35.
- CLO James Lee sold ~$4.3M across 18 open-market trades, tied to option exercises.
- Sales by CEO, CFO, and CTO were executed on the same date (Aug 21) at the same price ($849.35), consistent with a 10b5-1 plan.
- Total sales represent ~0.0075% of STX's $186.2B market cap, well below the 0.1% materiality threshold.
- Historical calibration shows score-4 filings in this segment have a 39% observed probability of an up-move at T+20, with a net negative average alpha.
Financial Impact
$13.97M in insider sales, representing ~0.0075% of market cap.
Risk Factors
- Insider sales could be misinterpreted as a negative signal by the market.
- If the 10b5-1 plan is not disclosed, the pattern may raise governance questions.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-STX-1787810521610 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 11, 2026 20d ago | Insider Cluster | $805.55 $877.33 | ▲ +8.91% | ▲ +8.80% | $823.86 (+2.27%) |
Sep 11, 2026 20d ago | Insider Cluster | $805.55 $877.33 | ▼ −8.91% | ▼ −8.80% | $823.86 (−2.27%) |
Sep 11, 2026 20d ago | Insider Cluster | $805.55 $877.33 | ▲ +8.91% | ▲ +8.80% | $823.86 (+2.27%) |
Sep 9, 2026 23d ago | 8-K | $885.92 $783.18 | ▼ −11.60% | ▼ −10.94% | $823.86 (−7.01%) |
Sep 3, 2026 29d ago | Insider Cluster | $798.61 $830.17 | ▼ −3.95% | ▼ −5.10% | $823.86 (−3.16%) |
Aug 26, 2026 5w ago | Insider Cluster | $846.37 $808.54 | ▼ −4.47% | ▼ −4.35% | $823.86 (−2.66%) |
Aug 24, 2026 5w ago | Insider Cluster | $794.65 $828.38 | ▲ +4.24% | ▲ +3.78% | $823.86 (+3.68%) |
Aug 14, 2026 7w ago | Insider Cluster | $973.44 $850.00 | ▼ −12.68% | ▼ −11.31% | $823.86 (−15.37%) |
Aug 11, 2026 7w ago | Insider Cluster | $820.52 $903.68 | ▲ +10.13% | ▲ +10.54% | $823.86 (+0.41%) |
Aug 4, 2026 8w ago | Insider Cluster | $837.66 $878.21 | ▲ +4.84% | ▲ +4.49% | $823.86 (−1.65%) |
US Market Status
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