The COO's $5.74M sale is the largest single insider disposition in the recent 30-day window (prior 30d total was $8.9M across 6 sells). While the dollar amount is not alarming for a $15.9B company, the cluster timing and COO involvement suggest monitoring upcoming earnings or material events for any negative catalyst. No 10b5-1 plan information is available to assess routine pattern.
Price Chart
Executive Summary
Three Rambus insiders, including the COO, sold a combined $7.25M in open-market sales over a one-week window. The COO's $5.74M sale dominates the cluster, representing a material disposition relative to the $15.9B market cap. While the total is modest at ~0.05% of market cap, the COO's involvement and the cluster timing warrant attention.
Key Financial Metrics
Key Facts
- COO Sean Fan sold 37,800 shares for $5.74M on May 26, 2026
- Director Emiko Higashi sold 5,000 shares for $788K on May 26, 2026
- Director Eric Stang sold 5,000 shares for $730K on June 1, 2026
- Total cluster value: $7.25M, all open-market sales
- Cluster represents ~0.05% of $15.9B market cap
Financial Impact
Total insider sales of $7.25M, or 0.05% of market cap
Risk Factors
- COO selling a large block could signal private concerns about near-term performance
- Cluster sales may precede a negative earnings surprise or guidance revision
- No disclosed 10b5-1 plan for these sales increases information-signal risk
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-RMBS-1780440584509 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 5, 2026 8w ago | 8-K | $97.30 $84.72 | ▼ −12.93% | ▼ −12.33% | $111.97 (+15.08%) |
Jul 27, 2026 9w ago | 8-K | $87.75 $89.86 | ▲ +2.40% | ▼ −0.98% | $111.97 (+27.60%) |
Jun 3, 2026 17w ago | Insider Cluster | $169.35 $112.92 | ▼ −33.32% | ▼ −31.95% | $111.97 (−33.88%) |
Jun 2, 2026 17w ago | Insider Cluster | $170.66 $112.92 | ▼ −33.83% | ▼ −32.83% | $111.97 (−34.39%) |
May 27, 2026 18w ago | Insider Cluster | $148.02 $114.73 | ▼ −22.49% | ▼ −19.35% | $111.97 (−24.35%) |
May 26, 2026 18w ago | Insider Cluster | $148.66 $123.69 | ▼ −16.80% | ▼ −14.90% | $111.97 (−24.68%) |
May 7, 2026 21w ago | Insider Cluster | $126.60 $170.66 | ▲ +34.80% | ▲ +31.67% | $111.97 (−11.56%) |
Apr 29, 2026 22w ago | 8-K | $115.11 $148.02 | ▲ +28.59% | ▲ +23.62% | $111.97 (−2.73%) |
Apr 27, 2026 22w ago | 8-K | $111.27 $157.23 | ▲ +41.30% | ▲ +35.84% | $111.97 (+0.63%) |
Apr 24, 2026 23w ago | 8-K | $141.31 $157.23 | ▲ +11.27% | ▲ +6.31% | $111.97 (−20.76%) |
US Market Status
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