Companies / Rambus Inc
Rambus Inc
Financials · FY2017
Ownership
108.5M shares outstanding · as of Jun 30, 2026
Ownership
| Insiders | 0.70% | 761,444 |
| 10%+ / strategic | 18.85% | 20,445,835 |
| Institutions | 72.10% | 78,205,444 |
| Public float | 8.34% | 9,048,880 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 11
View all →| Insider | % of shares | Shares |
|---|---|---|
Seraphin LucCEOPresident and CEO · Director | 0.32% | 345,767 |
Fan Xianzhi SeanEVP, COO | 0.18% | 193,954 |
Lynch DesmondSVP, CFO | 0.06% | 63,618 |
Higashi EmikoDirector | 0.05% | 49,519 |
Kissner CharlesDirector | 0.04% | 40,545 |
Stang Eric BDirector | 0.02% | 21,441 |
Shinn JohnSVP, General Counsel | 0.02% | 18,467 |
Sayiner NecipDirector | 0.02% | 18,223 |
Allen John KFormerChief Accounting Officer | 0.02% | 17,131 |
Laub StevenDirector | <0.01% | 7,519 |
Institutional holders 570
View all →| Holder | Value | % of shares |
|---|---|---|
| $1.85B | 12.88% | |
| $1.13B | 11.33% | |
| $519.50M | 3.61% | |
| $381.22M | 3.82% | |
| $268.84M | 2.88% | |
| $189.78M | 1.90% | |
| $174.01M | 1.75% | |
| $156.36M | 1.57% | |
| $145.83M | 1.46% | |
| $129.62M | 1.30% |
Activity
InsidersInstitutions
What insiders are doing in this stock (Form 4).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Feb 1, 2026 | Seraphin Luc CEO | Other | Common Stock | $10.52M | -93K -19.96% | 370,984 0.34% of shares | low |
| Feb 1, 2026 | Fan Xianzhi Sean Executive | Other | Common Stock | $10.51M | -92K -32.27% | 193,954 0.18% of shares | low |
| Feb 1, 2026 | Lynch Desmond Executive | Other | Common Stock | $2.51M | -22K -24.56% | 67,891 0.06% of shares | low |
| Mar 2, 2026 | Seraphin Luc CEO | Sell | Common Stock | $1.34M | -14K -3.77% | 348,426 0.32% of shares | medium |
| May 8, 2026 | Sayiner Necip Director | Sell | Common Stock | $1.28M | -10K -29.73% | 23,223 0.02% of shares | medium |
| Apr 1, 2026 | Seraphin Luc CEO | Other | Common Stock | $1.13M | -13K -3.45% | 351,193 0.32% of shares | low |
| Feb 1, 2026 | Shinn John Executive | Other | Common Stock | $1.12M | -10K -26.38% | 27,580 0.03% of shares | low |
| Mar 2, 2026 | Seraphin Luc CEO | Sell | Common Stock | $939.0K | -9K -2.72% | 338,957 0.31% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Vanguard Group Inc | Passive13G/A | — |
| BlackRock, Inc. | Passive13G/A | — |
| T. Rowe Price Associates, Inc. | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| RMBS | — | 750917106 |