// company-profile
Rambus Inc
RMBSExchangeNasdaqSectorSemiconductors & Related DevicesInc.DEFilings137Insiders14
// api This Rambus Inc insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $9.7M across 7 transactions.
// 90-day insight
Over the last 90 days, Rambus Inc insiders bought $0 (13 transactions) and sold $13.7M (16 transactions).
- Most active insider: Seraphin Luc with 5 transactions totaling $1.6M.
- Largest single sale: $5.7M by FAN XIANZHI SEAN on May 26, 2026.
- 24% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity is mixed — buys and sales are roughly balanced.
Institutional Ownership
Top 13F-HR holders of Rambus Inc as of 2026-03-31
Total reported AUM
$7.36B
QoQ change
+4.8%
Reporting period
2026-03-31
#1
BlackRock, Inc.
CIK 2012383
$917.5M
10.7M shares
#2
Invesco Ltd.
CIK 914208
$467.5M
5.4M shares
#3
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$415.3M
4.8M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 3, 2026 | Sayiner Necip | RMBS | Sale | 5,000 | $170.15 | $851K |
| Jun 2, 2026 | Higashi Emiko | RMBS | Sale | 5,000 | $163.00 | $815K |
| Jun 2, 2026 | Higashi Emiko | RMBS | Sale | 5,000 | $158.00 | $790K |
| Jun 1, 2026 | STANG ERIC B | RMBS | Sale | 5,000 | $146.00 | $730K |
| May 26, 2026 | Higashi Emiko | RMBS | Sale | 5,000 | $157.57 | $788K |
45 more transactions hidden
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