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Rambus Inc (RMBS)
NASDAQ: RMBS · Real-Time Price · USD
87.98+2.33 (+2.72%)
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Insider Score
––Not scored
RMBS Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
RMBS Stock Insider Trading Activity
RMBS stock’s insider trading shows 13 sales on the open market for an estimated $12.92M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| KISSNER CHARLES Director | Sell | 5,000 | $111.00 | $555.00K | 57.2% | 3,747 | Oct 2, 2026 | — | Form 4 |
| KISSNER CHARLES Director | Sell | 5,000 | $105.00 | $525.00K | 36.4% | 8,747 | Sep 22, 2026 | — | Form 4 |
| KISSNER CHARLES Director | Sell | 5,000 | $100.92 | $504.60K | 26.7% | 13,747 | Aug 7, 2026 | — | Form 4 |
| Sayiner Necip Director | Sell | 5,000 | $170.15 | $850.75K | 21.5% | 18,223 | Jun 3, 2026 | — | Form 4 |
| Higashi Emiko Director | Sell | 5,000 | $163.00 | $815.00K | 8.4% | 54,519 | Jun 2, 2026 | — | Form 4 |
| Higashi Emiko Director | Sell | 5,000 | $158.00 | $790.00K | 9.2% | 49,519 | Jun 2, 2026 | — | Form 4 |
| STANG ERIC B Director | Sell | 5,000 | $146.00 | $730.00K | 20.6% | 19,218 | Jun 1, 2026 | — | Form 4 |
| FAN XIANZHI SEAN COO | Sell | 100 | $152.35 | $15.23K | 0.1% | 168,358 | May 26, 2026 | — | Form 4 |
| Higashi Emiko Director | Sell | 5,000 | $157.57 | $787.85K | 7.7% | 59,519 | May 26, 2026 | — | Form 4 |
| FAN XIANZHI SEAN COO | Sell | 37,814 | $151.69 | $5.74M | 18.3% | 168,458 | May 26, 2026 | — | Form 4 |
| Shinn John Other | Sell | 1,000 | $143.63 | $143.63K | 4.5% | 21,112 | May 22, 2026 | — | Form 4 |
| Sayiner Necip Director | Sell | 9,824 | $130.18 | $1.28M | 29.7% | 23,223 | May 8, 2026 | — | Form 4 |
| LAUB STEVEN Director | Sell | 1,500 | $125.52 | $188.28K | 16.6% | 7,519 | May 7, 2026 | — | Form 4 |
| Gagneja Sumeet CFO | Award | 14,518 | — | — | New | 14,518 | May 1, 2026 | — | Form 4 |
| Gagneja Sumeet CFO | Award | 26,802 | — | — | 185% | 41,320 | May 1, 2026 | — | Form 4 |
| Rao Meera Director | Sell | 2,972 | $150.30 | $446.69K | 13.0% | 19,974 | Apr 24, 2026 | — | Form 4 |
| Rao Meera Director | Sell | 8,538 | $118.08 | $1.01M | 27.1% | 22,946 | Apr 14, 2026 | — | Form 4 |
| Allen John K Other | Tax withheld | 1,131 | $92.22 | $104.30K | 6.2% | 17,131 | Apr 3, 2026 | — | Form 4 |
| Seraphin Luc CEO | Sell | 2,511 | $86.04 | $216.05K | 0.7% | 348,682 | Apr 2, 2026 | — | Form 4 |
| Seraphin Luc CEO | Sell | 2,750 | $87.11 | $239.55K | 0.8% | 345,932 | Apr 2, 2026 | — | Form 4 |
| Seraphin Luc CEO | Sell | 165 | $88.35 | $14.58K | 0.0% | 345,767 | Apr 2, 2026 | — | Form 4 |
| Shinn John Other | Award | 5,558 | — | — | 30.1% | 24,025 | Apr 1, 2026 | — | Form 4 |
| PENG VICTOR Director | Award | 2,223 | — | — | 1323% | 2,391 | Apr 1, 2026 | — | Form 4 |
| Higashi Emiko Director | Award | 2,223 | — | — | 3.6% | 64,519 | Apr 1, 2026 | — | Form 4 |
| LAUB STEVEN Director | Award | 2,223 | — | — | 32.7% | 9,019 | Apr 1, 2026 | — | Form 4 |
| Rao Meera Director | Award | 2,223 | — | — | 7.6% | 31,484 | Apr 1, 2026 | — | Form 4 |
| Sayiner Necip Director | Award | 2,223 | — | — | 7.2% | 33,047 | Apr 1, 2026 | — | Form 4 |
| STANG ERIC B Director | Award | 2,223 | — | — | New | 2,223 | Apr 1, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.