RMBS · Insider Trading
Rambus Inc
Every open-market purchase and sale reported by RMBS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-05 | Charles Kissner | Director | Sell | −5,000 | −$555.00K |
| 2026-09-24 | Charles Kissner | Director | Sell | −5,000 | −$525.00K |
| 2026-08-10 | Charles Kissner | Director | Sell | −5,000 | −$504.60K |
| 2026-06-03 | Emiko Higashi | Director | Sell | −10,000 | −$1.60M |
| 2026-06-03 | Necip Sayiner | Director | Sell | −5,000 | −$850.75K |
| 2026-06-02 | Eric B Stang | Director | Sell | −5,000 | −$730.00K |
| 2026-05-27 | Emiko Higashi | Director | Sell | −5,000 | −$787.85K |
| 2026-05-26 | John Shinn | SVP, General Counsel | Sell | −1,000 | −$143.63K |
| 2026-05-26 | Xianzhi Sean Fan | EVP, COO | Sell | −37,914 | −$5.75M |
| 2026-05-11 | Steven Laub | Director | Sell | −1,500 | −$188.28K |
| 2026-05-11 | Necip Sayiner | Director | Sell | −9,824 | −$1.28M |
| 2026-05-04 | Sumeet Gagneja | SVP, CFO | A | +41,320 | — |
| 2026-04-27 | Meera Rao | Director | Sell | −2,972 | −$446.69K |
| 2026-04-15 | Meera Rao | Director | Sell | −8,538 | −$1.01M |
| 2026-04-07 | John K Allen | Chief Accounting Officer | F | −1,131 | −$104.30K |
| 2026-04-03 | John K Allen | Chief Accounting Officer | MIXED | +1,626 | −$103.71K |
| 2026-04-03 | Xianzhi Sean Fan | EVP, COO | MIXED | +12,318 | −$891.94K |
| 2026-04-03 | Luc Seraphin | President and CEO | MIXED | +14,697 | −$1.60M |
| 2026-04-03 | John Shinn | SVP, General Counsel | MIXED | +3,645 | −$172.07K |
| 2026-04-03 | Charles Kissner | Director | A | +2,223 | — |
| 2026-04-03 | Victor Peng | Director | A | +2,223 | — |
| 2026-04-03 | Eric B Stang | Director | A | +2,223 | — |
| 2026-04-03 | Necip Sayiner | Director | A | +2,223 | — |
| 2026-04-03 | Meera Rao | Director | A | +2,223 | — |
| 2026-04-03 | Steven Laub | Director | A | +2,223 | — |
| 2026-04-03 | Emiko Higashi | Director | A | +2,223 | — |
| 2026-03-11 | John Shinn | SVP, General Counsel | Sell | −4,556 | −$404.01K |
| 2026-03-04 | John Shinn | SVP, General Counsel | Sell | −4,557 | −$426.32K |
| 2026-03-03 | Victor Peng | Director | A | +168 | — |
| 2026-03-03 | Luc Seraphin | President and CEO | Sell | −39,914 | −$3.94M |
| 2026-02-24 | Desmond Lynch | SVP, CFO | Sell | −4,273 | −$433.84K |
| 2026-02-03 | Xianzhi Sean Fan | EVP, COO | MIXED | +56,399 | −$10.51M |
| 2026-02-03 | Luc Seraphin | President and CEO | MIXED | +51,221 | −$10.52M |
| 2026-02-03 | Desmond Lynch | SVP, CFO | MIXED | +12,449 | −$2.51M |
| 2026-02-03 | John Shinn | SVP, General Counsel | MIXED | +7,392 | −$1.12M |
| 2025-11-21 | Xianzhi Sean Fan | EVP, COO | G | −300 | — |
| 2025-11-20 | Xianzhi Sean Fan | EVP, COO | G | −300 | — |
| 2025-11-12 | Eric B Stang | Director | Sell | −9,000 | −$958.90K |
| 2025-10-06 | Desmond Lynch | SVP, CFO | Sell | −9,074 | −$920.97K |
| 2025-10-02 | Meera Rao | Director | Sell | −653 | −$66.60K |
| 2025-09-16 | Desmond Lynch | SVP, CFO | Sell | −9,074 | −$832.10K |
| 2025-09-12 | Necip Sayiner | Director | Sell | −7,500 | −$642.23K |
| 2025-09-04 | Meera Rao | Director | Sell | −3,000 | −$215.16K |
| 2025-09-03 | Desmond Lynch | SVP, CFO | F | −2,725 | −$200.25K |
| 2025-09-02 | Steven Laub | Director | Sell | −2,261 | −$177.99K |
| 2025-08-15 | Emiko Higashi | Director | Sell | −1,075 | −$83.58K |
| 2025-08-11 | Necip Sayiner | Director | Sell | −7,500 | −$551.45K |
| 2025-08-06 | Emiko Higashi | Director | Sell | −1,111 | −$83.33K |
| 2025-08-05 | John Shinn | SVP, General Counsel | Sell | −790 | −$58.94K |
| 2025-05-28 | Steven Laub | Director | Sell | −1,847 | −$101.82K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Luc Seraphin | President and CEO | 363,754 | $31.18M |
| Xianzhi Sean Fan | EVP, COO | 168,458 | $14.44M |
| Desmond Lynch | SVP, CFO | 63,618 | $5.45M |
| Emiko Higashi | Director | 54,519 | $4.67M |
| Charles Kissner | Director | 44,292 | $3.80M |
| Eric B Stang | Director | 21,441 | $1.84M |
| John Shinn | SVP, General Counsel | 21,112 | $1.81M |
| Meera Rao | Director | 19,974 | $1.71M |
| Necip Sayiner | Director | 18,223 | $1.56M |
| John K Allen | Chief Accounting Officer | 17,131 | $1.47M |
| Sumeet Gagneja | SVP, CFO | 14,518 | $1.24M |
| Steven Laub | Director | 7,519 | $644.60K |
| Victor Peng | Director | 2,391 | $204.98K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the RMBS quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.