RAMBUS INC
Total Trades
78
Buys
0
Sells
70
Largest Trade
N/A
Insiders
10
Institutional Funds
471
Inst. Value
$1M+
Activist Filings
12
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Seraphin Luc | President and CEO | SELL | $500K+ | 13K | $44.99 | Mar 28, 2023 |
| Seraphin Luc | President and CEO | SELL | $500K+ | 13K | $44.20 | Mar 21, 2023 |
| Seraphin Luc | President and CEO | SELL | $500K+ | 13K | $41.06 | Mar 14, 2023 |
| Shinn John | SVP, General Counsel | SELL | $100K–$500K | 9K | $44.82 | Mar 7, 2023 |
| Seraphin Luc | President and CEO | SELL | $500K+ | 13K | $44.83 | Mar 7, 2023 |
| STANG ERIC B | Director | SELL | $100K–$500K | 6K | $45.46 | Feb 14, 2023 |
| Sayiner Necip | Director | SELL | $100K–$500K | 3K | $45.53 | Feb 13, 2023 |
| FAN XIANZHI SEAN | COO | SELL | $1M+ | 53K | $37.88 | Nov 21, 2022 |
| FAN XIANZHI SEAN | COO | SELL | $100K–$500K | 10K | $38.30 | Nov 18, 2022 |
| Sayiner Necip | Director | SELL | $500K+ | 15K | $38.16 | Nov 16, 2022 |
| Sayiner Necip | Director | EXERCISE | $100K–$500K | 15K | $13.94 | Nov 16, 2022 |
| FAN XIANZHI SEAN | COO | SELL | $1M+ | 52K | $38.51 | Nov 16, 2022 |
| STANG ERIC B | Director | SELL | $100K–$500K | 8K | $34.25 | Nov 4, 2022 |
| KISSNER CHARLES | Director | SELL | $100K–$500K | 10K | $24.78 | May 11, 2022 |
| KISSNER CHARLES | Director | SELL | $1M+ | 40K | $25.82 | May 9, 2022 |
| Seraphin Luc | President and CEO | EXERCISE | $100K–$500K | 8K | $12.84 | Apr 27, 2022 |
| Seraphin Luc | President and CEO | SELL | $100K–$500K | 8K | $25.30 | Apr 27, 2022 |
| Seraphin Luc | President and CEO | SELL | $100K–$500K | 13K | $25.77 | Apr 19, 2022 |
| Seraphin Luc | President and CEO | EXERCISE | $15K–$50K | 2K | $12.83 | Apr 19, 2022 |
| Seraphin Luc | President and CEO | SELL | $100K–$500K | 13K | $25.86 | Apr 12, 2022 |
| Seraphin Luc | President and CEO | SELL | $100K–$500K | 13K | $31.43 | Apr 5, 2022 |
| Seraphin Luc | President and CEO | SELL | $100K–$500K | 13K | $32.30 | Mar 30, 2022 |
| Seraphin Luc | President and CEO | SELL | $100K–$500K | 13K | $31.09 | Mar 23, 2022 |
| Seraphin Luc | President and CEO | SELL | $100K–$500K | 13K | $26.68 | Mar 15, 2022 |
| KISSNER CHARLES | Director | SELL | $1M+ | 40K | $28.05 | Mar 10, 2022 |
| KISSNER CHARLES | Director | EXERCISE | $100K–$500K | 40K | $4.13 | Mar 10, 2022 |
| Seraphin Luc | President and CEO | SELL | $100K–$500K | 13K | $28.11 | Mar 9, 2022 |
| Shinn John | SVP, General Counsel | SELL | $100K–$500K | 10K | $26.81 | Feb 16, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 471 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 4.3M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4M | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 1.9M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 1.8M | $1M+ | SH |
| NORGES BANK | 1.7M | $1M+ | SH |
| CONGRESS ASSET MANAGEMENT CO | 1.4M | $1M+ | SH |
| EdgePoint Investment Group Inc. | 1.4M | $1M+ | SH |
| Swedbank AB | 1.4M | $1M+ | SH |
| Swedbank AB | 1.4M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.3M | $1M+ | SH |
| Neuberger Berman Group LLC | 1.2M | $1M+ | SH |
| BARCLAYS PLC | 1.0M | $1M+ | SH |
| Rafferty Asset Management, LLC | 936K | $1M+ | SH |
| AQR CAPITAL MANAGEMENT LLC | 704K | $1M+ | SH |
| EMERALD ADVISERS, LLC | 627K | $1M+ | SH |
| LORD, ABBETT & CO. LLC | 523K | $1M+ | SH |
| Fisher Asset Management, LLC | 517K | $1M+ | SH |
| LOOMIS SAYLES & CO L P | 512K | $1M+ | SH |
| CAISSE DE DEPOT ET PLACEMENT DU QUEBEC | 447K | $1M+ | SH |
| PANAGORA ASSET MANAGEMENT INC | 435K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Jan 21, 2026
14.0%
15.1M shares
T. Rowe Price Associates, Inc.
SC 13G/A · Aug 14, 2025
4.4%
4.7M shares
T. Rowe Price Associates, Inc.
SC 13G/A · May 14, 2025
8.1%
8.7M shares
T. Rowe Price Associates, Inc.
SC 13G · Feb 14, 2025
5.1%
5.4M shares
SC 13G/A · Nov 12, 2024
11.7%
12.6M shares
SC 13G/A · Nov 8, 2024
12.7%
13.7M shares
SC 13G/A · Nov 4, 2024
11.7%
12.6M shares
SC 13G/A · Oct 23, 2024
12.7%
13.7M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.6%
11.4M shares
SC 13G/A · Jan 23, 2024
14.4%
15.5M shares
SC 13G/A · Jan 27, 2022
15.7%
17.2M shares
SC 13G · Jan 25, 2022
15.7%
17.2M shares