Rambus Inc. (RMBS)
Nasdaq: RMBS · Semiconductors & Related Devices · San Jose, CA · filing with the SEC since 1997
Grade6.4
◀ Past 4.6● Present 7.4▶ Future 7.0
Who owns Rambus Inc.
As filed with the SECHolders of 5% or more
5
Blackrock, Inc. holds 10.4% of Common Stock, as its SCHEDULE 13G/A filed Oct 27, 2026 says.
Directors and officers
14
report now, of 29 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 5 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 27, 2026 · Common Stock · 12.2% in Jul 29, 2026
Fmr LLC
SCHEDULE 13G · filed Jun 5, 2026 · COMMON STOCK
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
Invesco LTD
SCHEDULE 13G · filed May 6, 2026 · Common Stock
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
T. Rowe Price Associates, Inc.
SCHEDULE 13G/A · filed May 15, 2026 · COMMON STOCK · reported falling below 5%, from 5% in Feb 17, 2026
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What RMBS reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Private Company
An investee · investee · invested in, named in the 10-K filed Feb 18, 2026
4 subsidiaries in 4 countries, from the list filed with the 10-K filed Feb 24, 2025.
Insider tradesForm 4
34sales
0purchases
22sales on a scheduled plan
10people selling
$21.9Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 5, 2025 to Oct 5, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 5, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window10 of 29 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Fan Xianzhi Sean | EVP, COO | 2 | $5.8M | 0 | 0 | $0 |
| Seraphin Luc | President and CEO | 9 | $4.4M | 9 | 0 | $0 |
| Higashi Emiko | director | 3 | $2.4M | 0 | 0 | $0 |
| Sayiner Necip | director | 2 | $2.1M | 0 | 0 | $0 |
| Stang Eric B | director | 3 | $1.7M | 0 | 0 | $0 |
| Kissner Charles | director | 3 | $1.6M | 3 | 0 | $0 |
| Rao Meera | director | 2 | $1.5M | 2 | 0 | $0 |
| Lynch Desmond | SVP, CFO | 3 | $1.4M | 3 | 0 | $0 |
| Shinn John | SVP, General Counsel | 6 | $1.0M | 5 | 0 | $0 |
| Laub Steven | director | 1 | $200,000 | 0 | 0 | $0 |