Rambus Inc
RMBS- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0000917273
In the last 90 days, Rambus Inc insiders filed 0 open-market purchases and 2 sales; 620 institutions reported holding it in 13F filings for Q2 2026, worth $13.3B in total; superinvestors Duquesne Family Office and Maverick Capital hold it.
Holders of 5% or more of RMBS
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Rambus Inc, largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Rambus Inc on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on Rambus Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20251:07 PM ET | Price T Rowe Associates Inc | 13G/A | 4.40%4.69M shares | −3.70 ppfrom 8.10%Below 5% | Jun 30, 2025 | SEC |
| May 14, 202510:45 AM ET | Price T Rowe Associates Inc | 13G/A | 8.10%8.75M shares | +3.00 ppfrom 5.10% | Mar 31, 2025 | SEC |
| Feb 14, 20259:44 AM ET | Price T Rowe Associates Inc | 13G | 5.10%5.45M shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Rambus Inc shares.
No Form 144 notices for Rambus Inc are on file.