🕵️ Rambus Inc ($RMBS)
SEC insider & ownership activity, last 12 months · CIK 917273 · every row links its SEC filing
Over the last 12 months insiders sold $23.1M with no open-market buying against it. Xianzhi S Fan sold $5.8M in discretionary trades (May). No red-flag 8-Ks in the window.
🚨 2 signals active —
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 9 sellers, $23.1M (40 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Xianzhi S Fan | 0 | – | 2 | $5.8M | May 26, 2026 |
| Luc Seraphin | 0 | – | 9 | $4.4M | Apr 2, 2026 |
| Sayiner Necip | 0 | – | 4 | $3.3M | Jun 3, 2026 |
| Higashi Emiko | 0 | – | 5 | $2.6M | Jun 2, 2026 |
| Desmond M Lynch | 0 | – | 4 | $2.2M | Feb 23, 2026 |
| Rao Meera | 0 | – | 4 | $1.7M | Apr 24, 2026 |
| Stang Family Trust | 0 | – | 3 | $1.7M | Jun 1, 2026 |
| John Shinn | 0 | – | 7 | $1.0M | May 22, 2026 |
| Steven Laub | 0 | – | 2 | $366K | May 7, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 12.2% | 13G | Jul 29, 2026 | filing ↗ | |
| FMR LLC | 10.4% | 13G | Jun 5, 2026 | filing ↗ | |
| Abigail P. Johnson | 10.4% | 13G | Jun 5, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 6.2% | 13G | Apr 29, 2026 | filing ↗ | |
| Invesco Ltd. | 6.0% | 13G | May 6, 2026 | filing ↗ | |
| Vanguard Capital Management | 5.2% | 13G | Apr 30, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Necip Sayiner | $851K | Jun 3, 2026 | filing ↗ |
| Emiko Higashi | $1.6M | Jun 2, 2026 | filing ↗ |
| Stang Family Trust | $730K | Jun 1, 2026 | filing ↗ |
| Emiko Higashi | $788K | May 26, 2026 | filing ↗ |
| Xianzhi S Fan | $5.8M | May 26, 2026 | filing ↗ |
| John Shinn | $144K | May 22, 2026 | filing ↗ |
| Necip Sayiner | $1.3M | May 8, 2026 | filing ↗ |
| Steven Laub | $188K | May 7, 2026 | filing ↗ |
| Meera Rao | $447K | Apr 24, 2026 | filing ↗ |
| Meera Rao | $1.0M | Apr 14, 2026 | filing ↗ |
| Desmond M Lynch | $136K | Apr 2, 2026 | filing ↗ |
| Luc Seraphin | $470K | Apr 2, 2026 | filing ↗ |
| John Shinn | $404K | Mar 10, 2026 | filing ↗ |
| John Shinn | $426K | Mar 3, 2026 | filing ↗ |
| Luc Seraphin | $3.9M | Mar 2, 2026 | filing ↗ |
| Desmond M Lynch | $434K | Feb 23, 2026 | filing ↗ |
| Stang Family Trust | $447K | Nov 10, 2025 | filing ↗ |
| Stang Family Trust | $512K | Nov 7, 2025 | filing ↗ |
| Desmond M Lynch | $921K | Oct 6, 2025 | filing ↗ |
| Meera Rao | $67K | Oct 1, 2025 | filing ↗ |
| Desmond M Lynch | $832K | Sep 15, 2025 | filing ↗ |
| Necip Sayiner | $642K | Sep 11, 2025 | filing ↗ |
| Meera Rao | $215K | Sep 2, 2025 | filing ↗ |
| Steven Laub | $178K | Aug 29, 2025 | filing ↗ |
| Emiko Higashi | $84K | Aug 13, 2025 | filing ↗ |
| Necip Sayiner | $551K | Aug 8, 2025 | filing ↗ |
| Emiko Higashi | $83K | Aug 4, 2025 | filing ↗ |
| John Shinn | $59K | Aug 4, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 27, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 29, 2026 | filing ↗ |
| Earnings (2.02) | Apr 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 27, 2026 | filing ↗ |
| Shareholder vote (5.07) | Apr 23, 2026 | filing ↗ |
| Other events (8.01) | Apr 23, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 12, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 4, 2026 | filing ↗ |
| Earnings (2.02) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Earnings (2.02) | Oct 27, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 27, 2025 | filing ↗ |