RAMBUS INC (RMBS)
Data as of , from SEC Form 4 filings.
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About RAMBUS INC (RMBS)
Rambus Inc is a semiconductor company providing chips and silicon IP for data-intensive computing systems, focusing on data center and artificial intelligence (AI) infrastructure. The company is at the forefront of enabling the next era of AI-driven computing, addressing challenges of signal and power integrity at increasingly extreme data rates across the data center, edge, and client markets. It offers high-performance memory subsystems, with a balanced and diverse portfolio of products, IP, and patents that maximize performance and security in computationally intensive systems. The company operates in South Korea, Singapore, the United States, and other countries, with the majority of its revenue coming from South Korea.
- SAN JOSE, CA
- 791
- 1997
- XNAS
RMBS Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 3 | 15,000 | $1.58M |
RMBS insider transactions (Form 4)
3458 Form 4 filings on record, the earliest from Dec 12, 2024, newest first. Filing history page 2 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
 Desmond Lynch - Officer | Open-market sale | Common Stock | 4,273 | $101.53 footnote F2 | $434K | |
| ||||||
 John Shinn - Officer | Grant or award | Common Stock | 17,276 footnote F1 | $0.00 | - | |
| John Shinn - Officer | Tax withholding / forfeiture | Common Stock | 9,884 | $113.71 | $1.12M | |
| ||||||
| Desmond Lynch - Officer | Grant or award | Common Stock | 34,554 footnote F1 | $0.00 | - | |
| Desmond Lynch - Officer | Tax withholding / forfeiture | Common Stock | 22,105 | $113.71 | $2.51M | |
| ||||||
 Luc Seraphin - Officer | Grant or award | Common Stock | 143,744 footnote F1 | $0.00 | - | |
| Luc Seraphin - Officer | Tax withholding / forfeiture | Common Stock | 92,523 | $113.71 | $10.52M | |
| ||||||
| Xianzhi Sean Fan - Officer | Grant or award | Common Stock | 148,802 footnote F1 | $0.00 | - | |
| Xianzhi Sean Fan - Officer | Tax withholding / forfeiture | Common Stock | 92,403 | $113.71 | $10.51M | |
| ||||||
| Xianzhi Sean Fan - Officer | Gift | Common Stock | 300 | $0.00 | - | |
| Xianzhi Sean Fan - Officer | Gift | Common Stock | 300 | $0.00 | - | |
| Xianzhi Sean Fan - Officer | Gift | Common Stock | 300 | $0.00 | - | |
 Eric B. Stang | Open-market sale | Common Stock | 4,000 | $111.79 footnote F3 | $447K | |
| Eric B. Stang | Open-market sale | Common Stock | 5,000 | $102.35 footnote F1 | $512K | |
| ||||||
| Desmond Lynch - Officer | Open-market sale | Common Stock | 5,467 | $101.17 footnote F2 | $553K | |
| Desmond Lynch - Officer | Open-market sale | Common Stock | 3,607 | $101.99 footnote F3 | $368K | |
| ||||||
| Meera Rao | Open-market sale | Common Stock | 653 | $101.99 footnote F2 | $67K | |
| ||||||
| Desmond Lynch - Officer | Open-market sale | Common Stock | 9,074 | $91.70 | $832K | |
| Necip Sayiner | Open-market sale | Common Stock | 7,500 | $85.63 | $642K | |
| Meera Rao | Open-market sale | Common Stock | 3,000 | $71.72 | $215K | |
| Desmond Lynch - Officer | Tax withholding / forfeiture | Common Stock | 2,725 | $73.49 | $200K | |
| Steven Laub | Open-market sale | Common Stock | 2,261 | $78.72 | $178K | |
 Emiko Higashi | Open-market sale | Common Stock | 1,075 | $77.75 | $84K | |
| Necip Sayiner | Open-market sale | Common Stock | 7,500 | $73.53 | $551K | |
| John Shinn - Officer | Open-market sale | Common Stock | 790 | $74.61 | $59K | |
| Emiko Higashi | Open-market sale | Common Stock | 1,111 | $75.00 | $83K | |
| Steven Laub - Director | Open-market sale | Common Stock | 1,847 | $55.13 | $102K | |
| Steven Laub - Director | Open-market sale | Common Stock | 3,653 | $55.56 | $203K | |
| Eric B. Stang - Director | Open-market sale | Common Stock | 3,653 | $51.13 | $187K | |
| Eric B. Stang - Director | Grant or award | Common Stock | 3,824 | $0.00 | - | |
| Steven Laub - Director | Grant or award | Common Stock | 3,824 | $0.00 | - | |
| Charles Kissner - Director | Grant or award | Common Stock | 3,824 | $0.00 | - | |
| Meera Rao - Director | Open-market sale | Common Stock | 5,408 | $58.22 | $315K | |
| John Shinn - Officer | Open-market sale | Common Stock | 2,462 | $58.13 | $143K | |
Recent RMBS Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| KISSNER CHARLES | Director | 5,000 | $555K | View on EDGAR | |
| KISSNER CHARLES | Director | 5,000 |
RMBS insider trading FAQ
What is the latest insider trade for RMBS?
RAMBUS INC (RMBS) had 3 insider filings in the last 90 days, with the most recent on 2026-10-05. The full record for RMBS runs to 58 Form 4 filings, the earliest from 2024-12-12. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying RMBS stock?
No insider purchases of RMBS were filed in the last 90 days.
How many insiders are selling RMBS stock?
3 insider sales of RMBS were filed in the last 90 days, totaling $1.58M.
Where can I see RMBS SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects RMBS Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Information Technology companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Charles Kissner view on EDGAR
- - Charles Kissner view on EDGAR
- - Charles Kissner view on EDGAR
- - Necip Sayiner view on EDGAR
- - Emiko Higashi view on EDGAR
- - Eric B. Stang view on EDGAR
- - Emiko Higashi view on EDGAR
- - Xianzhi Sean Fan view on EDGAR
- - John Shinn view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Information Technology
- Where RMBS's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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