RAMBUS INC Insider Trading Activity
Every SEC Form 4 insider transaction reported for RAMBUS INC (RMBS), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are RMBS insiders buying or selling?
In the last 12 months, RAMBUS INC insiders reported 0 open-market purchases ($0) and 19 sales ($21.0M) — net selling of $21.0M. Since January 2018, Trabud has recorded 157 Form 4 filings for RMBS: 0 buys ($0) and 157 sells ($75.9M).
Source: SEC EDGAR Form 4
What stands out
- No RAMBUS INC insider made an open-market purchase in the last 12 months; the 19 reported open-market sales totaled $21.0M.
Key Statistics (January 2018 – Oct 5, 2026)
Total Form 4 filings
157
SEC EDGAR
Insider filers
15
Insider buys (0)
$0
Insider sells (157)
$75.9M
Insider sentiment
Net sellingNet insider flow of $75.9M in net selling since January 2018, and $21.0M in net selling over the last 12 months.
Recent RMBS insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 5, 2026 | Charles Kissner | Director | Sale | 5.0K | $111.00 | $555.0K | SEC ↗ |
| Sep 24, 2026 | Charles Kissner | Director | Sale | 5.0K | $105.00 | $525.0K | SEC ↗ |
| Aug 10, 2026 | Charles Kissner | Director | Sale | 5.0K | $100.92 | $504.6K | SEC ↗ |
| Jun 3, 2026 | Necip Sayiner | Director | Sale | 5.0K | $170.15 | $850.8K | SEC ↗ |
| Jun 3, 2026 | Emiko Higashi | Director | Sale | 10.0K | $160.50 | $1.6M | SEC ↗ |
| Jun 2, 2026 | Eric B Stang | Director | Sale | 5.0K | $146.00 | $730.0K | SEC ↗ |
| May 27, 2026 | Emiko Higashi | Director | Sale | 5.0K | $157.57 | $787.9K | SEC ↗ |
| May 26, 2026 | Xianzhi Sean Fan | EVP, COO | Sale | 37.9K | $151.69 | $5.8M | SEC ↗ |
| May 26, 2026 | John Shinn | SVP, General Counsel | Sale | 1.0K | $143.63 | $143.6K | SEC ↗ |
| May 11, 2026 | Necip Sayiner | Director | Sale | 9.8K | $130.18 | $1.3M | SEC ↗ |
| May 11, 2026 | Steven Laub | Director | Sale | 1.5K | $125.52 | $188.3K | SEC ↗ |
| Apr 27, 2026 | Meera Rao | Director | Sale | 3.0K | $150.30 | $446.7K | SEC ↗ |
| Apr 15, 2026 | Meera Rao | Director | Sale | 8.5K | $118.08 | $1.0M | SEC ↗ |
| Apr 4, 2026 | Luc Seraphin | President and CEO | Sale | 5.4K | $86.65 | $470.2K | SEC ↗ |
| Mar 11, 2026 | John Shinn | SVP, General Counsel | Sale | 4.6K | $88.68 | $404.0K | SEC ↗ |
| Mar 4, 2026 | John Shinn | SVP, General Counsel | Sale | 4.6K | $93.55 | $426.3K | SEC ↗ |
| Mar 4, 2026 | Luc Seraphin | President and CEO | Sale | 39.9K | $98.63 | $3.9M | SEC ↗ |
| Feb 24, 2026 | Desmond Lynch | SVP, CFO | Sale | 4.3K | $101.53 | $433.8K | SEC ↗ |
| Nov 12, 2025 | Eric B Stang | Director | Sale | 9.0K | $106.54 | $958.9K | SEC ↗ |
| Oct 6, 2025 | Desmond Lynch | SVP, CFO | Sale | 9.1K | $101.50 | $921.0K | SEC ↗ |
| Oct 2, 2025 | Meera Rao | Director | Sale | 653 | $101.99 | $66.6K | SEC ↗ |
| Sep 16, 2025 | Desmond Lynch | SVP, CFO | Sale | 9.1K | $91.70 | $832.1K | SEC ↗ |
| Sep 12, 2025 | Necip Sayiner | Director | Sale | 7.5K | $85.63 | $642.2K | SEC ↗ |
| Sep 4, 2025 | Meera Rao | Director | Sale | 3.0K | $71.72 | $215.2K | SEC ↗ |
| Sep 2, 2025 | Steven Laub | Director | Sale | 2.3K | $78.72 | $178.0K | SEC ↗ |
Showing the 25 most recent of 157 Form 4 filings for RAMBUS INC.
Most active RMBS insiders
- Luc Seraphin52 filings
- John Shinn16 filings
- Jae Kim15 filings
- Charles Kissner11 filings
- Eric B Stang11 filings
Ask anything about RMBS insider activity
Use Trabud's AI agent to query RAMBUS INC's Form 4 history in plain English — "Show me RMBS CEO purchases this year" or compare it against any other ticker.
Open the AI agentRMBS insider trading FAQ
Are RAMBUS INC insiders buying or selling?
In the last 12 months, RAMBUS INC insiders reported 0 open-market purchases ($0) and 19 sales ($21.0M) — net selling of $21.0M. Since January 2018, Trabud has recorded 157 Form 4 filings for RMBS: 0 buys ($0) and 157 sells ($75.9M). Over the full record that is net selling of $75.9M.
How many insiders trade RMBS stock?
15 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for RAMBUS INC. The most recent filing was accepted on Oct 5, 2026.
Where does Trabud get RMBS insider trading data?
All RMBS insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.