Rambus Inc. (RMBS) Insider Trading
Over the last 3 months, RMBS insiders made 0 open-market buys and 1 sale, a net sale of -$505K (SEC Form 4). Over the last 6 months, 378 institutions increased and 444 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
1
Net (3m)
-$504.6K
Insider trades by month Buys Sells
Feb
Mar
Apr
May
Jun
Aug
Context3-month price -41.6%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 10, 2026 | KISSNER CHARLESdirector | Sell | 5,000 | $100.92 |
| Jun 3, 2026 | Higashi Emikodirector | Sell | 5,000 | $163.00 |
| Jun 3, 2026 | Sayiner Necipdirector | Sell | 5,000 | $170.15 |
| Jun 2, 2026 | STANG ERIC Bdirector | Sell | 5,000 | $146.00 |
| May 27, 2026 | Higashi Emikodirector | Sell | 5,000 | $157.57 |
| May 26, 2026 | FAN XIANZHI SEANofficer: EVP, COO | Sell | 100 | $152.35 |
| May 26, 2026 | Shinn Johnofficer: SVP, General Counsel | Sell | 1,000 | $143.63 |
| May 26, 2026 | FAN XIANZHI SEANofficer: EVP, COO | Sell | 37,814 | $151.69 |
| May 11, 2026 | LAUB STEVENdirector | Sell | 1,500 | $125.52 |
| May 11, 2026 | Sayiner Necipdirector | Sell | 9,824 | $130.18 |
| May 4, 2026 | Gagneja Sumeetofficer: SVP, CFO | Grant | 14,518 | — |
| May 4, 2026 | Gagneja Sumeetofficer: SVP, CFO | Grant | 26,802 | — |
| Apr 27, 2026 | Rao Meeradirector | Sell | 2,972 | $150.30 |
| Apr 15, 2026 | Rao Meeradirector | Sell | 8,538 | $118.08 |
| Apr 7, 2026 | Allen John Kofficer: Chief Accounting Officer | Tax | 1,131 | $92.22 |
| Apr 3, 2026 | PENG VICTORdirector | Grant | 2,223 | — |
| Apr 3, 2026 | KISSNER CHARLESdirector | Grant | 2,223 | — |
| Apr 3, 2026 | FAN XIANZHI SEANofficer: EVP, COO | Grant | 22,234 | — |
| Apr 3, 2026 | Sayiner Necipdirector | Grant | 2,223 | — |
| Apr 3, 2026 | Rao Meeradirector | Grant | 2,223 | — |
| Apr 3, 2026 | Seraphin Lucdirector, officer: President and CEO | Sell | 165 | $88.35 |
| Apr 3, 2026 | Seraphin Lucdirector, officer: President and CEO | Sell | 2,750 | $87.11 |
| Apr 3, 2026 | Shinn Johnofficer: SVP, General Counsel | Grant | 5,558 | — |
| Apr 3, 2026 | Allen John Kofficer: Chief Accounting Officer | Grant | 2,779 | — |
| Apr 3, 2026 | Seraphin Lucdirector, officer: President and CEO | Sell | 2,511 | $86.04 |
| Apr 3, 2026 | FAN XIANZHI SEANofficer: EVP, COO | Tax | 9,916 | $89.95 |
| Apr 3, 2026 | Allen John Kofficer: Chief Accounting Officer | Tax | 495 | $89.95 |
| Apr 3, 2026 | Shinn Johnofficer: SVP, General Counsel | Tax | 1,913 | $89.95 |
| Apr 3, 2026 | Higashi Emikodirector | Grant | 2,223 | — |
| Apr 3, 2026 | Seraphin Lucdirector, officer: President and CEO | Tax | 12,561 | $89.95 |
Source: RMBS SEC Form 4 filings, latest Aug 10, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their RMBS positions over the last 6 months (SEC Form 13F).
Increased
378
New positions
224
Reduced
444
Sold out
68
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 16.3M | May 13, 2026 |
| BlackRock, Inc. | Reduced | 14.0M | Aug 7, 2026 |
| FMR LLC | Increased | 10.5M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 6.6M | May 8, 2026 |
| Invesco Ltd. | Increased | 6.6M | Aug 14, 2026 |
| INVESCO LTD. | Increased | 6.5M | May 12, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 6.1M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 4.9M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 4.8M | May 15, 2026 |
| STATE STREET CORP | Increased | 4.4M | May 15, 2026 |
| STATE STREET CORP | Reduced | 3.9M | Aug 7, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 3.4M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 3.3M | Aug 14, 2026 |
| FMR LLC | Increased | 3.3M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 3.1M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.