RMBS RAMBUS INC
Price Chart
Executive Summary
Two directors (Stang and Higashi) sold a combined $1.5M in open-market sales on June 1-2, while EVP/COO Fan sold $5.74M on May 26. Total cluster sales of $7.28M represent ~0.04% of RMBS's $18B market cap, well below the 0.1% materiality threshold. The sales are small relative to company size and likely reflect routine portfolio diversification or tax planning, not a coordinated bearish signal.
Key Financial Metrics
Actionable Insight
The dollar value of this cluster is trivial relative to RMBS's $18B market cap. Insider selling at this scale is routine and non-informative. No trading action warranted based on this filing alone. Monitor for any material change in business fundamentals or a material uptick in insider selling volume (e.g., >0.5% of market cap in a single month).
Key Facts
- Total insider sales of $7.28M over 8-day window, representing ~0.04% of $18B market cap
- EVP/COO Sean Fan sold 37,800 shares ($5.74M) on May 26 — largest trade in cluster
- Directors Stang and Higashi each sold 5,000 shares on June 1-2 ($730K and $815K respectively)
- All three transactions are open-market sales (code S); no purchases in the cluster
- Prior 30d insider activity: 7 sells totaling $9.7M, consistent with ongoing selling pattern
- Historical calibration shows score-2 reports on RMBS have had mixed outcomes (T+20 avg alpha -2.55% for this segment)
Financial Impact
Total insider sales of $7.28M, or 0.04% of market cap — immaterial relative to company size
Risk Factors
- Insider selling could accelerate if management becomes concerned about near-term headwinds, but current levels are routine
- No purchases in the cluster — consistent with a one-sided selling pattern, but not unusual for a large-cap semiconductor company
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-RMBS-1780524645797 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 3, 2026
13d ago
|
Insider Cluster
| $169.35 $144.47 | ▼ −14.69% | ▼ −12.14% | $132.48 (−21.77%) |
|
Jun 2, 2026
14d ago
|
Insider Cluster
| $170.66 $138.12 | ▼ −19.07% | ▼ −15.25% | $132.48 (−22.37%) |
|
May 27, 2026
20d ago
|
Insider Cluster
| $148.02 $170.66 | ▲ +15.30% | ▲ +15.34% | $132.48 (−10.50%) |
|
May 26, 2026
21d ago
|
Insider Cluster
| $148.66 $170.66 | ▲ +14.80% | ▲ +14.33% | $132.48 (−10.88%) |
|
May 7, 2026
5w ago
|
Insider Cluster
| $126.60 $134.85 | ▲ +6.52% | ▲ +5.01% | $132.48 (+4.64%) |
|
Apr 29, 2026
6w ago
|
8-K
| $115.11 $130.04 | ▲ +12.97% | ▲ +11.24% | $132.48 (+15.09%) |
|
Apr 27, 2026
7w ago
|
8-K
| $111.27 $111.50 | ▲ +0.21% | ▼ −1.49% | $132.48 (+19.06%) |
|
Apr 24, 2026
7w ago
|
8-K
| $141.31 $111.50 | ▼ −21.10% | ▼ −21.50% | $132.48 (−6.25%) |
|
Mar 6, 2026
14w ago
|
DEFA14A
| $88.52 $92.78 | ▲ +4.81% | ▲ +6.17% | $132.48 (+49.66%) |
|
Mar 2, 2026
15w ago
|
Insider Cluster
| $98.88 $88.52 | ▼ −10.48% | ▼ −9.27% | $132.48 (+33.98%) |
US Market Status
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