The simultaneous, massive open-market selling by the CEO, CFO, CTO, and Chief Commercial Officer on the same day with no purchases is a strong bearish signal. Monitor for upcoming earnings, guidance revisions, or material adverse developments. The lack of 10b5-1 plan disclosure and the sheer dollar amount suggest insiders may be front-running negative news.
Price Chart
Executive Summary
Four Seagate insiders, including the CEO and CFO, sold a combined $115.54M in open-market sales on a single day (Sept 15, 2026), with the CEO alone selling $75.6M. This is a massive cluster of open-market selling by top C-suite executives, representing approximately 0.35% of Seagate's market cap (~$33B), and is not explained by 10b5-1 plans or tax withholding. The concentration and size strongly suggest informed selling ahead of potential negative news.
Key Financial Metrics
Key Facts
- CEO William Mosley sold $75.58M in open-market shares on Sept 15, 2026
- CFO Gianluca Romano sold $38.60M in open-market shares on the same day
- CTO John Morris sold $11.94M in open-market shares on the same day
- Chief Commercial Officer Ban Seng Teh sold ~$26.7M across 17 separate open-market trades on Sept 15
- Total insider selling: $115.54M in a single day, all open-market (code S) with no 10b5-1 plan indication
- No insider purchases were reported in the cluster window
- Selling represents ~0.35% of Seagate's approximate $33B market cap
Financial Impact
Insider selling of $115.54M in a single day by all four top C-suite executives
Risk Factors
- Potential upcoming earnings miss or guidance downgrade
- Possible undisclosed operational or demand issues in the HDD/storage market
- Risk of broader sector weakness or customer concentration problems
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-STX-1790144363812 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 27, 2026 today | 8-K | $609.00 | awaiting T+20 | — | $667.85 (+9.66%) |
Sep 22, 2026 5w ago | Insider Cluster | $923.86 $696.89 | ▲ +24.57% | ▲ +25.26% | $667.85 (+27.71%) |
Sep 15, 2026 6w ago | Insider Cluster | $783.18 $713.54 | ▲ +8.89% | ▲ +10.95% | $667.85 (+14.73%) |
Sep 11, 2026 6w ago | Insider Cluster | $805.55 $753.25 | ▼ −6.49% | ▼ −8.76% | $667.85 (−17.09%) |
Sep 11, 2026 6w ago | Insider Cluster | $805.55 $753.25 | ▲ +6.49% | ▲ +8.76% | $667.85 (+17.09%) |
Sep 11, 2026 6w ago | Insider Cluster | $805.55 $753.25 | ▼ −6.49% | ▼ −8.76% | $667.85 (−17.09%) |
Sep 9, 2026 6w ago | 8-K | $885.92 $807.57 | ▼ −8.84% | ▼ −10.79% | $667.85 (−24.62%) |
Sep 3, 2026 7w ago | Insider Cluster | $849.28 $887.09 | ▼ −4.45% | ▼ −3.85% | $667.85 (+21.36%) |
Aug 26, 2026 8w ago | Insider Cluster | $847.20 $916.83 | ▲ +8.22% | ▲ +8.19% | $667.85 (−21.17%) |
Aug 24, 2026 9w ago | Insider Cluster | $821.67 $923.86 | ▲ +12.44% | ▲ +12.19% | $667.85 (−18.72%) |
US Market Status
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