Rambus Inc (RMBS) · Insider trading
What Rambus's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$21.01M
10 insiders, 41% under a plan
Net, 12 months
−$21.01M
bought less sold
Latest filing
2026-10-05
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Fan Xianzhi SeanEVP, COO | – | $9.31M | 3 | 2026-05-26 | 168,458 |
| Seraphin LucDirector, President and CEO | – | $7.34M | 16 | 2026-04-02 | 348,682 |
| Sayiner NecipDirector | – | $3.63M | 5 | 2026-06-03 | 18,223 |
| Higashi EmikoDirector | – | $2.56M | 5 | 2026-06-02 | 54,519 |
| Lynch DesmondSVP, CFO | – | $2.54M | 6 | 2026-02-23 | 63,618 |
| Rao MeeraDirector | – | $2.05M | 5 | 2026-04-24 | 19,974 |
| Shinn JohnSVP, General Counsel | – | $2.01M | 10 | 2026-05-22 | 21,112 |
| Stang Eric BDirector | – | $1.88M | 4 | 2026-06-01 | – |
| Kissner CharlesDirector | – | $1.58M | 3 | 2026-10-02 | – |
| Laub StevenDirector | – | $671,052 | 4 | 2026-05-07 | 7,519 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-02 | Kissner CharlesDirector | Saleplanindirect | 5,000 | 111.00 | $555,000 | 3,747 | Form 4 |
| 2026-09-22 | Kissner CharlesDirector | Saleplanindirect | 5,000 | 105.00 | $525,000 | 8,747 | Form 4 |
| 2026-08-07 | Kissner CharlesDirector | Saleplanindirect | 5,000 | 100.92 | $504,600 | 13,747 | Form 4 |
| 2026-06-03 | Sayiner NecipDirector | Sale | 5,000 | 170.15 | $850,750 | 18,223 | Form 4 |
| 2026-06-02 | Higashi EmikoDirector | Sale | 5,000 | 163.00 | $815,000 | 54,519 | Form 4 |
| 2026-06-02 | Higashi EmikoDirector | Sale | 5,000 | 158.00 | $790,000 | 49,519 | Form 4 |
| 2026-06-01 | Stang Eric BDirector | Saleindirect | 5,000 | 146.00 | $730,000 | 19,218 | Form 4 |
| 2026-05-26 | Higashi EmikoDirector | Sale | 5,000 | 157.57 | $787,850 | 59,519 | Form 4 |
| 2026-05-26 | Fan Xianzhi SeanEVP, COO | Sale | 37,814 | 151.69 | $5.74M | 168,458 | Form 4 |
| 2026-05-26 | Fan Xianzhi SeanEVP, COO | Sale | 100 | 152.35 | $15,235 | 168,358 | Form 4 |
| 2026-05-22 | Shinn JohnSVP, General Counsel | Sale | 1,000 | 143.63 | $143,630 | 21,112 | Form 4 |
| 2026-05-08 | Sayiner NecipDirector | Sale | 9,824 | 130.18 | $1.28M | 23,223 | Form 4 |
| 2026-05-07 | Laub StevenDirector | Sale | 1,500 | 125.52 | $188,280 | 7,519 | Form 4 |
| 2026-04-24 | Rao MeeraDirector | Saleplan | 2,972 | 150.30 | $446,692 | 19,974 | Form 4 |
| 2026-04-14 | Rao MeeraDirector | Saleplan | 8,538 | 118.08 | $1.01M | 22,946 | Form 4 |
| 2026-04-02 | Seraphin LucDirector, President and CEO | Saleplan | 2,511 | 86.04 | $216,046 | 348,682 | Form 4 |
| 2026-04-02 | Seraphin LucDirector, President and CEO | Saleplan | 2,750 | 87.11 | $239,552 | 345,932 | Form 4 |
| 2026-04-02 | Seraphin LucDirector, President and CEO | Saleplan | 165 | 88.35 | $14,578 | 345,767 | Form 4 |
| 2026-03-10 | Shinn JohnSVP, General Counsel | Saleplan | 4,356 | 88.64 | $386,116 | 18,667 | Form 4 |
| 2026-03-10 | Shinn JohnSVP, General Counsel | Saleplan | 200 | 89.55 | $17,910 | 18,467 | Form 4 |
| 2026-03-03 | Shinn JohnSVP, General Counsel | Saleplan | 2,254 | 92.77 | $209,104 | 25,326 | Form 4 |
| 2026-03-03 | Shinn JohnSVP, General Counsel | Saleplan | 1,603 | 94.07 | $150,794 | 23,723 | Form 4 |
| 2026-03-03 | Shinn JohnSVP, General Counsel | Saleplan | 700 | 94.89 | $66,423 | 23,023 | Form 4 |
| 2026-03-02 | Seraphin LucDirector, President and CEO | Saleplan | 1,679 | 95.83 | $160,899 | 369,305 | Form 4 |
| 2026-03-02 | Seraphin LucDirector, President and CEO | Saleplan | 7,225 | 97.38 | $703,570 | 362,080 | Form 4 |
| 2026-03-02 | Seraphin LucDirector, President and CEO | Saleplan | 13,654 | 98.22 | $1.34M | 348,426 | Form 4 |
| 2026-03-02 | Seraphin LucDirector, President and CEO | Saleplan | 9,469 | 99.17 | $939,041 | 338,957 | Form 4 |
| 2026-03-02 | Seraphin LucDirector, President and CEO | Saleplan | 6,587 | 100.20 | $660,017 | 332,370 | Form 4 |
| 2026-03-02 | Seraphin LucDirector, President and CEO | Saleplan | 1,300 | 101.65 | $132,145 | 331,070 | Form 4 |
| 2026-02-23 | Lynch DesmondSVP, CFO | Saleplan | 4,273 | 101.53 | $433,838 | 63,618 | Form 4 |
| 2025-11-10 | Stang Eric BDirector | Saleindirect | 4,000 | 111.79 | $447,160 | 20,394 | Form 4 |
| 2025-11-07 | Stang Eric BDirector | Saleindirect | 5,000 | 102.35 | $511,750 | 24,394 | Form 4 |
| 2025-10-06 | Lynch DesmondSVP, CFO | Saleplan | 5,467 | 101.17 | $553,096 | 58,963 | Form 4 |
| 2025-10-06 | Lynch DesmondSVP, CFO | Saleplan | 3,607 | 101.99 | $367,878 | 55,356 | Form 4 |
| 2025-10-01 | Rao MeeraDirector | Saleplan | 653 | 101.99 | $66,599 | 29,261 | Form 4 |
| 2025-09-15 | Lynch DesmondSVP, CFO | Saleplan | 9,074 | 91.70 | $832,086 | 64,430 | Form 4 |
| 2025-09-11 | Sayiner NecipDirector | Sale | 7,500 | 85.63 | $642,225 | 30,824 | Form 4 |
| 2025-09-02 | Rao MeeraDirector | Saleplan | 3,000 | 71.72 | $215,160 | 29,914 | Form 4 |
| 2025-08-29 | Laub StevenDirector | Sale | 2,261 | 78.72 | $177,986 | 6,796 | Form 4 |
| 2025-08-13 | Higashi EmikoDirector | Sale | 1,075 | 77.75 | $83,581 | 62,296 | Form 4 |
21 more
| 2025-08-08 | Sayiner NecipDirector | Sale | 7,500 | 73.53 | $551,475 | 38,324 | Form 4 |
| 2025-08-04 | Higashi EmikoDirector | Sale | 1,111 | 75.00 | $83,325 | 63,371 | Form 4 |
| 2025-08-04 | Shinn JohnSVP, General Counsel | Sale | 790 | 74.61 | $58,942 | 20,188 | Form 4 |
| 2025-05-27 | Laub StevenDirector | Sale | 1,847 | 55.13 | $101,825 | 9,057 | Form 4 |
| 2025-05-19 | Laub StevenDirector | Sale | 3,653 | 55.56 | $202,961 | 10,904 | Form 4 |
| 2025-05-09 | Stang Eric BDirector | Saleindirect | 3,653 | 51.13 | $186,778 | 29,394 | Form 4 |
| 2025-05-05 | Lynch DesmondSVP, CFO | Saleplan | 3,118 | 50.31 | $156,867 | 75,798 | Form 4 |
| 2025-04-23 | Seraphin LucDirector, President and CEO | Saleplan | 6,348 | 46.97 | $298,166 | 319,241 | Form 4 |
| 2025-04-22 | Seraphin LucDirector, President and CEO | Saleplan | 1,255 | 45.00 | $56,475 | 325,589 | Form 4 |
| 2025-04-15 | Seraphin LucDirector, President and CEO | Saleplan | 10,000 | 47.79 | $477,900 | 326,844 | Form 4 |
| 2025-04-08 | Seraphin LucDirector, President and CEO | Saleplan | 10,000 | 46.81 | $468,100 | 336,844 | Form 4 |
| 2025-04-01 | Seraphin LucDirector, President and CEO | Saleplan | 10,000 | 50.88 | $508,800 | 346,844 | Form 4 |
| 2025-03-25 | Seraphin LucDirector, President and CEO | Saleplan | 10,000 | 58.64 | $586,400 | 306,931 | Form 4 |
| 2025-03-21 | Shinn JohnSVP, General Counsel | Saleplan | 7,632 | 55.73 | $425,331 | 13,190 | Form 4 |
| 2025-03-18 | Seraphin LucDirector, President and CEO | Saleplan | 10,000 | 53.79 | $537,900 | 316,931 | Form 4 |
| 2025-03-14 | Lynch DesmondSVP, CFO | Saleplan | 3,743 | 53.27 | $199,390 | 62,578 | Form 4 |
| 2025-03-14 | Shinn JohnSVP, General Counsel | Saleplan | 7,633 | 52.98 | $404,396 | 20,822 | Form 4 |
| 2025-02-19 | Fan Xianzhi SeanEVP, COO | Sale | 52,327 | 68.02 | $3.56M | 93,841 | Form 4 |
| 2025-02-19 | Sayiner NecipDirector | Sale | 4,625 | 66.74 | $308,672 | 42,000 | Form 4 |
| 2024-12-12 | Rao MeeraDirector | Sale | 5,408 | 58.22 | $314,854 | 29,090 | Form 4 |
| 2024-12-12 | Shinn JohnSVP, General Counsel | Sale | 2,462 | 58.13 | $143,116 | 20,628 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
33 × grant or award21 × shares withheld for tax2 × gift
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-05-01 | Gagneja SumeetSVP, CFO | Grant or award A | +14,518 | – | 14,518 | Form 4 |
| 2026-05-01 | Gagneja SumeetSVP, CFO | Grant or award A | +26,802 | – | 41,320 | Form 4 |
| 2026-04-03 | Allen John KChief Accounting Officer | Shares withheld for tax F | −1,131 | 92.22 | 17,131 | Form 4 |
| 2026-04-01 | Allen John KChief Accounting Officer | Grant or award A | +2,779 | – | 19,415 | Form 4 |
| 2026-04-01 | Allen John KChief Accounting Officer | Shares withheld for tax F | −495 | 89.95 | 18,920 | Form 4 |
| 2026-04-01 | Allen John KChief Accounting Officer | Shares withheld for tax F | −658 | 89.95 | 18,262 | Form 4 |
| 2026-04-01 | Fan Xianzhi SeanEVP, COO | Grant or award A | +22,234 | – | 216,188 | Form 4 |
| 2026-04-01 | Fan Xianzhi SeanEVP, COO | Shares withheld for tax F | −9,916 | 89.95 | 206,272 | Form 4 |
| 2026-04-01 | Seraphin LucDirector, President and CEO | Grant or award A | +32,684 | – | 363,754 | Form 4 |
| 2026-04-01 | Seraphin LucDirector, President and CEO | Shares withheld for tax F | −12,561 | 89.95 | 351,193 | Form 4 |
| 2026-04-01 | Shinn JohnSVP, General Counsel | Grant or award A | +5,558 | – | 24,025 | Form 4 |
| 2026-04-01 | Shinn JohnSVP, General Counsel | Shares withheld for tax F | −1,913 | 89.95 | 22,112 | Form 4 |
| 2026-04-01 | Kissner CharlesDirector | Grant or award A | +2,223 | – | 40,545 | Form 4 |
| 2026-04-01 | Peng VictorDirector | Grant or award A | +2,223 | – | 2,391 | Form 4 |
| 2026-04-01 | Stang Eric BDirector | Grant or award A | +2,223 | – | 2,223 | Form 4 |
| 2026-04-01 | Sayiner NecipDirector | Grant or award A | +2,223 | – | 33,047 | Form 4 |
| 2026-04-01 | Rao MeeraDirector | Grant or award A | +2,223 | – | 31,484 | Form 4 |
| 2026-04-01 | Laub StevenDirector | Grant or award A | +2,223 | – | 9,019 | Form 4 |
| 2026-04-01 | Higashi EmikoDirector | Grant or award A | +2,223 | – | 64,519 | Form 4 |
| 2026-03-02 | Peng VictorDirector | Grant or award A | +168 | – | 168 | Form 4 |
| 2026-02-01 | Fan Xianzhi SeanEVP, COO | Grant or award A | +148,802 | – | 286,357 | Form 4 |
| 2026-02-01 | Fan Xianzhi SeanEVP, COO | Shares withheld for tax F | −92,403 | 113.71 | 193,954 | Form 4 |
| 2026-02-01 | Seraphin LucDirector, President and CEO | Grant or award A | +143,744 | – | 463,507 | Form 4 |
| 2026-02-01 | Seraphin LucDirector, President and CEO | Shares withheld for tax F | −92,523 | 113.71 | 370,984 | Form 4 |
| 2026-02-01 | Lynch DesmondSVP, CFO | Grant or award A | +34,554 | – | 89,996 | Form 4 |
| 2026-02-01 | Lynch DesmondSVP, CFO | Shares withheld for tax F | −22,105 | 113.71 | 67,891 | Form 4 |
| 2026-02-01 | Shinn JohnSVP, General Counsel | Grant or award A | +17,276 | – | 37,464 | Form 4 |
| 2026-02-01 | Shinn JohnSVP, General Counsel | Shares withheld for tax F | −9,884 | 113.71 | 27,580 | Form 4 |
| 2025-11-21 | Fan Xianzhi SeanEVP, COO | Gift G | −300 | – | 137,555 | Form 4 |
| 2025-11-19 | Fan Xianzhi SeanEVP, COO | Gift G | −300 | – | 137,855 | Form 4 |
| 2025-09-01 | Lynch DesmondSVP, CFO | Shares withheld for tax F | −2,725 | 73.49 | 73,504 | Form 4 |
| 2025-04-03 | Allen John KChief Accounting Officer | Shares withheld for tax F | −1,129 | 46.15 | 16,090 | Form 4 |
| 2025-04-01 | Seraphin LucDirector, President and CEO | Grant or award A | +55,077 | – | 362,008 | Form 4 |
| 2025-04-01 | Seraphin LucDirector, President and CEO | Shares withheld for tax F | −5,164 | 52.29 | 356,844 | Form 4 |
| 2025-04-01 | Fan Xianzhi SeanEVP, COO | Grant or award A | +47,810 | – | 141,651 | Form 4 |
| 2025-04-01 | Fan Xianzhi SeanEVP, COO | Shares withheld for tax F | −3,496 | 52.29 | 138,155 | Form 4 |
| 2025-04-01 | Shinn JohnSVP, General Counsel | Grant or award A | +8,605 | – | 21,795 | Form 4 |
| 2025-04-01 | Shinn JohnSVP, General Counsel | Shares withheld for tax F | −817 | 52.29 | 20,978 | Form 4 |
| 2025-04-01 | Lynch DesmondSVP, CFO | Grant or award A | +18,167 | – | 80,745 | Form 4 |
| 2025-04-01 | Lynch DesmondSVP, CFO | Shares withheld for tax F | −1,829 | 52.29 | 78,916 | Form 4 |
| 2025-04-01 | Stang Eric BDirector | Grant or award A | +3,824 | – | 3,824 | Form 4 |
| 2025-04-01 | Kissner CharlesDirector | Grant or award A | +3,824 | – | 38,322 | Form 4 |
| 2025-04-01 | Higashi EmikoDirector | Grant or award A | +3,824 | – | 64,482 | Form 4 |
| 2025-04-01 | Rao MeeraDirector | Grant or award A | +3,824 | – | 32,914 | Form 4 |
| 2025-04-01 | Sayiner NecipDirector | Grant or award A | +3,824 | – | 45,824 | Form 4 |
| 2025-04-01 | Laub StevenDirector | Grant or award A | +3,824 | – | 14,557 | Form 4 |
| 2025-04-01 | Allen John KChief Accounting Officer | Grant or award A | +5,168 | – | 17,709 | Form 4 |
| 2025-04-01 | Allen John KChief Accounting Officer | Shares withheld for tax F | −490 | 52.29 | 17,219 | Form 4 |
| 2025-02-01 | Seraphin LucDirector, President and CEO | Grant or award A | +191,548 | – | 454,800 | Form 4 |
| 2025-02-01 | Seraphin LucDirector, President and CEO | Shares withheld for tax F | −127,869 | 60.35 | 326,931 | Form 4 |
| 2025-02-01 | Fan Xianzhi SeanEVP, COO | Grant or award A | +112,675 | – | 224,246 | Form 4 |
| 2025-02-01 | Fan Xianzhi SeanEVP, COO | Shares withheld for tax F | −78,078 | 60.35 | 146,168 | Form 4 |
| 2025-02-01 | Shinn JohnSVP, General Counsel | Grant or award A | +18,777 | – | 39,405 | Form 4 |
| 2025-02-01 | Shinn JohnSVP, General Counsel | Shares withheld for tax F | −10,950 | 60.35 | 28,455 | Form 4 |
| 2025-02-01 | Lynch DesmondSVP, CFO | Grant or award A | +39,072 | – | 92,432 | Form 4 |
| 2025-02-01 | Lynch DesmondSVP, CFO | Shares withheld for tax F | −26,111 | 60.35 | 66,321 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.