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RMBS Insider Trading

Insider Ownership Percentage: 0.75%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $17,045,821.18

Rambus Insider Trading History Chart

This chart shows the insider buying and selling history at Rambus by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Rambus Share Price & Price History

Current Price: $87.60
Price Change: ▲ Price Increase of +1.73 (2.01%)
As of 09/18/2026 04:00 PM ET

This chart shows the closing price history over time for RMBS up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Rambus Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
6/3/2026Necip SayinerDirectorSell5,000$170.15$850,750.0018,223View SEC Filing Icon  
6/2/2026Emiko HigashiDirectorSell10,000$160.50$1,605,000.0049,519View SEC Filing Icon  
6/1/2026Eric B. StangDirectorSell5,000$146.00$730,000.0019,218View SEC Filing Icon  
5/26/2026Emiko HigashiDirectorSell5,000$157.57$787,850.0059,519View SEC Filing Icon  
5/26/2026Xianzhi Sean FanEVPSell37,914$151.69$5,751,174.66168,358View SEC Filing Icon  
4/24/2026Meera RaoDirectorSell2,972$150.30$446,691.6019,974View SEC Filing Icon  
4/14/2026Meera RaoDirectorSell8,538$118.08$1,008,167.0422,946View SEC Filing Icon  
4/2/2026Luc SeraphinCEOSell5,426$86.65$470,162.90345,767View SEC Filing Icon  
3/2/2026Luc SeraphinCEOSell39,914$98.63$3,936,717.82331,070View SEC Filing Icon  
2/23/2026Desmond LynchCFOSell4,273$101.53$433,837.6963,618View SEC Filing Icon  
11/10/2025Eric B. StangDirectorSell4,000$111.78$447,120.0020,394View SEC Filing Icon  
11/7/2025Eric B. StangDirectorSell5,000$102.35$511,750.0024,394View SEC Filing Icon  
10/1/2025Meera RaoDirectorSell653$101.99$66,599.4729,261View SEC Filing Icon  
9/15/2025Desmond LynchCFOSell9,074$91.70$832,085.8064,430View SEC Filing Icon  
9/11/2025Necip SayinerDirectorSell7,500$85.63$642,225.0030,824View SEC Filing Icon  
9/2/2025Meera RaoDirectorSell3,000$71.72$215,160.0029,914View SEC Filing Icon  
8/13/2025Emiko HigashiDirectorSell1,075$77.75$83,581.2562,296View SEC Filing Icon  
8/8/2025Necip SayinerDirectorSell7,500$73.53$551,475.0038,324View SEC Filing Icon  
8/4/2025Emiko HigashiDirectorSell1,111$75.00$83,325.0063,371View SEC Filing Icon  
5/27/2025Steven LaubDirectorSell1,847$55.12$101,806.649,057View SEC Filing Icon  
5/19/2025Steven LaubDirectorSell3,653$55.56$202,960.6810,904View SEC Filing Icon  
4/23/2025Luc SeraphinCEOSell6,348$46.97$298,165.56319,241View SEC Filing Icon  
4/15/2025Luc SeraphinCEOSell10,000$47.79$477,900.00326,844View SEC Filing Icon  
4/8/2025Luc SeraphinCEOSell10,000$46.81$468,100.00336,844View SEC Filing Icon  
4/1/2025Luc SeraphinCEOSell10,000$50.88$508,800.00346,844View SEC Filing Icon  
3/25/2025Luc SeraphinCEOSell10,000$58.64$586,400.00306,931View SEC Filing Icon  
3/18/2025Luc SeraphinCEOSell10,000$53.79$537,900.00316,931View SEC Filing Icon  
2/19/2025Necip SayinerDirectorSell4,625$66.74$308,672.5042,000View SEC Filing Icon  
2/19/2025Xianzhi Sean FanCOOSell52,327$68.02$3,559,282.5493,841View SEC Filing Icon  
12/12/2024Meera RaoDirectorSell5,408$58.22$314,853.7629,090View SEC Filing Icon  
5/7/2024Eric B. StangDirectorSell5,408$56.95$307,985.6032,422View SEC Filing Icon  
4/16/2024Luc SeraphinCEOSell5,530$58.66$324,389.80262,791View SEC Filing Icon  
4/9/2024Luc SeraphinCEOSell15,000$61.35$920,250.00268,321View SEC Filing Icon  
4/2/2024Luc SeraphinCEOSell15,000$59.93$898,950.00283,321View SEC Filing Icon  
3/26/2024John ShinnSVPSell3,947$62.71$247,516.3716,663View SEC Filing Icon  
3/26/2024Luc SeraphinCEOSell15,000$62.69$940,350.00259,755View SEC Filing Icon  
3/19/2024John ShinnSVPSell3,949$58.84$232,359.1620,610View SEC Filing Icon  
3/19/2024Luc SeraphinCEOSell15,000$58.35$875,250.00274,755View SEC Filing Icon  
3/12/2024John ShinnSVPSell3,889$62.68$243,762.5224,559View SEC Filing Icon  
3/12/2024Luc SeraphinCEOSell15,000$62.69$940,350.00289,755View SEC Filing Icon  
3/11/2024Desmond LynchCFOSell7,837$62.18$487,304.6641,958View SEC Filing Icon  
3/7/2024John ShinnSVPSell3,928$64.93$255,045.0428,448View SEC Filing Icon  
3/5/2024Luc SeraphinCEOSell15,000$62.17$932,550.00304,755View SEC Filing Icon  
2/20/2024Xianzhi Sean FanCOOSell2,004$55.00$110,220.00121,229View SEC Filing Icon  
12/11/2023Xianzhi Sean FanCOOSell16,904$66.35$1,121,580.40151,319View SEC Filing Icon  
12/7/2023Desmond LynchCFOSell1,527$64.64$98,705.2864,198View SEC Filing Icon  
11/15/2023Steven LaubDirectorSell2,000$66.91$133,820.007,761View SEC Filing Icon  
11/8/2023Emiko HigashiDirectorSell8,000$60.00$480,000.0057,686View SEC Filing Icon  
11/6/2023Necip SayinerDirectorSell10,000$57.43$574,300.0028,653View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Rambus (NASDAQ:RMBS)

88.54% of Rambus stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at RMBS by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Rambus Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Sequoia Financial Advisors LLC7,542$1M0.0%-4.3%0.007%Search for SEC Filing on Google Icon
9/9/2026Tidal Investments LLC180,833$24M0.0%+44.3%0.167%Search for SEC Filing on Google Icon
9/9/2026One Capital Management LLC34,586$4.59M0.1%N/A0.032%Search for SEC Filing on Google Icon
9/9/2026Engineers Gate Manager LP35,888$4.76M0.1%N/A0.033%Search for SEC Filing on Google Icon
9/9/2026Integrated Wealth Concepts LLC1,902$0.25M0.0%N/A0.002%Search for SEC Filing on Google Icon
9/9/2026NewEdge Advisors LLC564$75K0.0%-47.3%0.001%Search for SEC Filing on Google Icon
9/9/2026Baird Financial Group Inc.25,473$3.38M0.0%+5.7%0.023%Search for SEC Filing on Google Icon
9/8/2026Allworth Financial LP1,847$0.25M0.0%+8.8%0.002%Search for SEC Filing on Google Icon
9/8/2026Arizona State Retirement System29,844$3.96M0.0%+0.9%0.028%Search for SEC Filing on Google Icon
9/8/2026Nykredit A S320,040$42.48M0.1%N/A0.295%Search for SEC Filing on Google Icon
8/27/2026Corient Private Wealth LP5,607$0.74M0.0%+29.9%0.005%Search for SEC Filing on Google Icon
8/26/2026Amundi14,695$1.95M0.0%-10.3%0.014%Search for SEC Filing on Google Icon
8/26/2026HighTower Advisors LLC132,484$17.59M0.0%-27.0%0.122%Search for SEC Filing on Google Icon
8/25/2026VIRGINIA RETIREMENT SYSTEMS ET Al29,654$3.94M0.0%N/A0.027%Search for SEC Filing on Google Icon
8/23/2026HB Wealth Management LLC2,498$0.33M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/22/2026AlphaGrep UK Ltd5,945$0.79M0.2%N/A0.005%Search for SEC Filing on Google Icon
8/22/2026Raiffeisen Bank International AG37,000$4.58M0.1%-22.9%0.034%Search for SEC Filing on Google Icon
8/21/2026Nykredit A S406,702$53.99M0.2%N/A0.375%Search for SEC Filing on Google Icon
8/21/2026B. Metzler seel. Sohn & Co. AG22,274$2.96M0.0%+19.4%0.021%Search for SEC Filing on Google Icon
8/21/2026Tsfg LLC5,316$0.71M0.1%+8.4%0.005%Search for SEC Filing on Google Icon
8/21/2026Aubrey Capital Management Ltd24,300$3.22M2.0%N/A0.022%Search for SEC Filing on Google Icon
8/20/2026Maple Rock Capital Partners Inc.342,600$45.48M0.9%N/A0.316%Search for SEC Filing on Google Icon
8/20/2026Headlands Technologies LLC5,768$0.77M0.1%N/A0.005%Search for SEC Filing on Google Icon
8/20/2026Susquehanna Fundamental Investments LLC14,638$1.94M0.0%N/A0.013%Search for SEC Filing on Google Icon
8/20/2026Penn Capital Management Company LLC14,204$1.91M0.1%+14.8%0.013%Search for SEC Filing on Google Icon
8/20/2026Greenwood Capital Associates LLC4,519$0.60M0.1%-19.3%0.004%Search for SEC Filing on Google Icon
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC289,022$38.37M0.0%+20.1%0.266%Search for SEC Filing on Google Icon
8/19/2026Van ECK Associates Corp167,993$22.30M0.0%+15.7%0.155%Search for SEC Filing on Google Icon
8/19/2026Nissay Asset Management Corp Japan37,649$5M0.0%+42.8%0.035%Search for SEC Filing on Google Icon
8/19/2026Hsbc Holdings PLC48,013$6.11M0.0%+658.6%0.044%Search for SEC Filing on Google Icon
8/19/2026Wellington Management Group LLP418,533$55.56M0.0%-51.1%0.386%Search for SEC Filing on Google Icon
8/18/2026Beacon Pointe Advisors LLC1,624$0.22M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/18/2026Rakuten Investment Management Inc.13,968$1.73M0.0%N/A0.013%Search for SEC Filing on Google Icon
8/18/2026Orion Capital Management LLC703$93K0.0%N/A0.001%Search for SEC Filing on Google Icon
8/18/2026Empowered Funds LLC8,637$1.15M0.0%N/A0.008%Search for SEC Filing on Google Icon
8/18/2026United Capital Financial Advisors LLC3,472$0.46M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/18/2026Equitable Holdings Inc.5,168$0.69M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/18/2026Centaurus Financial Inc.888$0.12M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/18/2026Jefferies Financial Group Inc.8,974$1.19M0.0%N/A0.008%Search for SEC Filing on Google Icon
8/18/2026Public Employees Retirement System of Ohio32,798$4.35M0.0%N/A0.030%Search for SEC Filing on Google Icon
8/18/2026PenderFund Capital Management Ltd.350$46K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/17/2026Corient Private Wealth LP5,646$0.75M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/17/2026Bank of America Corp DE1,218,726$161.77M0.0%N/A1.124%Search for SEC Filing on Google Icon
8/15/2026Caisse de depot et placement du Quebec282,580$37.51M0.1%N/A0.261%Search for SEC Filing on Google Icon
8/15/2026Man Group plc38,613$5.13M0.0%N/A0.036%Search for SEC Filing on Google Icon
8/15/2026Jupiter Topco LLC288,553$38.30M0.0%N/A0.266%Search for SEC Filing on Google Icon
8/14/2026Hsbc Holdings PLC48,013$6.11M0.0%N/A0.044%Search for SEC Filing on Google Icon
8/14/2026EFG International AG45,149$5.99M0.1%N/A0.042%Search for SEC Filing on Google Icon
8/14/2026Primecap Management Co. CA47,500$6.31M0.0%N/A0.044%Search for SEC Filing on Google Icon
8/14/2026Canada Pension Plan Investment Board330,648$43.89M0.0%N/A0.305%Search for SEC Filing on Google Icon
8/14/2026Castleark Management LLC5,610$0.75M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/14/2026Nicholas Investment Partners LP53,368$7.08M0.4%N/A0.049%Search for SEC Filing on Google Icon
8/14/2026Legal & General Group Plc153,857$20.39M0.0%N/A0.142%Search for SEC Filing on Google Icon
8/14/2026The Manufacturers Life Insurance Company797,195$105.82M0.1%N/A0.735%Search for SEC Filing on Google Icon
8/14/2026Algert Global LLC33,257$4.42M0.1%-54.1%0.031%Search for SEC Filing on Google Icon
8/13/2026Ranger Investment Management L.P.176,692$23.45M1.5%N/A0.163%Search for SEC Filing on Google Icon
8/13/2026Sanctuary Advisors LLC6,567$0.87M0.0%N/A0.006%Search for SEC Filing on Google Icon
8/13/2026Meiji Yasuda Asset Management Co Ltd.38,759$5.15M0.2%N/A0.036%Search for SEC Filing on Google Icon
8/12/2026Elevation Point Wealth Partners LLC1,710$0.23M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/12/2026Northwestern Mutual Wealth Management Co.1,245$0.17M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/12/2026Evolve Private Wealth LLC7,310$0.97M0.1%N/A0.007%Search for SEC Filing on Google Icon
8/12/2026Emerald Investment Advisers LLC26,848$3.56M0.2%N/A0.025%Search for SEC Filing on Google Icon
8/12/2026William Blair Investment Management LLC200,116$26.56M0.1%N/A0.185%Search for SEC Filing on Google Icon
8/12/2026Rakuten Securities Inc.544$72K0.0%N/A0.001%Search for SEC Filing on Google Icon
8/12/2026Callan Family Office LLC3,239$0.43M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/12/2026Keebeck Wealth Management6,214$0.83M0.1%N/A0.006%Search for SEC Filing on Google Icon
8/11/2026Allworth Financial LP1,847$0.25M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/11/2026B. Metzler seel. Sohn & Co. AG22,274$2.96M0.0%N/A0.021%Search for SEC Filing on Google Icon
8/11/2026Vise Technologies Inc.6,912$0.92M0.0%N/A0.006%Search for SEC Filing on Google Icon
8/11/2026E Fund Management Co. Ltd.11,596$1.54M0.0%N/A0.011%Search for SEC Filing on Google Icon
8/10/2026Great Lakes Advisors LLC14,884$1.98M0.0%N/A0.014%Search for SEC Filing on Google Icon
8/10/2026Danske Bank A S200$27K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/10/2026Diversify Advisory Services LLC29,957$2.89M0.0%N/A0.028%Search for SEC Filing on Google Icon
8/8/2026Deepwater Asset Management LLC44,634$5.93M2.7%N/A0.041%Search for SEC Filing on Google Icon
8/8/2026Meeder Advisory Services Inc.3,551$0.47M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/7/2026BlackRock Inc.13,964,477$1.85B0.0%N/A12.875%Search for SEC Filing on Google Icon
8/7/2026Deutsche Bank AG23,567$3.13M0.0%N/A0.022%Search for SEC Filing on Google Icon
8/7/2026Rice Hall James & Associates LLC34,819$4.62M0.2%N/A0.032%Search for SEC Filing on Google Icon
8/7/2026TimesSquare Capital Management LLC267,705$35.54M0.5%N/A0.247%Search for SEC Filing on Google Icon
8/7/2026Mitsubishi UFJ Asset Management Co. Ltd.306$41K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/7/2026Persistent Asset Partners Ltd368$49K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/6/2026Global Retirement Partners LLC8,471$1.12M0.0%N/A0.008%Search for SEC Filing on Google Icon
8/6/2026Bank of New York Mellon Corp828,233$109.94M0.0%N/A0.764%Search for SEC Filing on Google Icon
8/6/2026Focus Partners Advisor Solutions LLC3,400$0.45M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/6/2026State of Wyoming13,749$1.83M0.2%N/A0.013%Search for SEC Filing on Google Icon
8/6/2026Stoneridge Investment Partners LLC2,237$0.20M0.1%N/A0.002%Search for SEC Filing on Google Icon
7/10/2026Handelsbanken Fonder AB150,857$20.03M0.1%+28.1%0.140%Search for SEC Filing on Google Icon
7/10/2026Redhawk Wealth Advisors Inc.9,237$1.23M0.1%N/A0.009%Search for SEC Filing on Google Icon
7/9/2026Everhart Financial Group Inc.2,200$0.29M0.0%-9.4%0.002%Search for SEC Filing on Google Icon
7/9/2026Hennion & Walsh Asset Management Inc.24,150$3.21M0.1%-6.1%0.022%Search for SEC Filing on Google Icon
7/8/2026Assenagon Asset Management S.A.31,896$4.23M0.0%-32.9%0.029%Search for SEC Filing on Google Icon
7/7/2026Balefire LLC2,768$0.37M0.1%-5.6%0.003%Search for SEC Filing on Google Icon
7/7/2026GAMMA Investing LLC4,139$0.55M0.0%-14.2%0.004%Search for SEC Filing on Google Icon
7/7/2026Harbor Investment Advisory LLC1,019$0.14M0.0%N/A0.001%Search for SEC Filing on Google Icon
7/7/2026Moody National Bank Trust Division2,148$0.29M0.0%-86.7%0.002%Search for SEC Filing on Google Icon
7/7/2026CoreCap Advisors LLC400$53K0.0%N/A0.000%Search for SEC Filing on Google Icon
7/2/2026KERR FINANCIAL PLANNING Corp5,850$0.78M0.9%-3.3%0.005%Search for SEC Filing on Google Icon
6/18/2026Pacer Advisors Inc.37,001$3.18M0.0%+80.9%0.034%Search for SEC Filing on Google Icon
6/16/2026Empowered Funds LLC8,443$0.73M0.0%-8.0%0.008%Search for SEC Filing on Google Icon
6/3/2026Parallel Advisors LLC2,252$0.19M0.0%-10.0%0.002%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Rambus logo
Rambus Inc. provides semiconductor products in the United States, South Korea, Singapore, and internationally. The company offers DDR memory interface chips, including DDR5 and DDR4 memory interface chips to module manufacturers, OEMs, and hyperscalers; silicon IP, such as interface and security IP solutions that move and protect data in advanced data center, government, and automotive applications; and interface IP solutions for high-speed memory and chip-to-chip digital controller IP. It also provides a portfolios of security IP solutions, including crypto cores, hardware roots of trust, high-speed protocol engines, and chip provisioning technologies; and portfolio of patents that covers memory architecture, high-speed serial links, and security products. It markets its products and services through its direct sales force and distributors. Rambus Inc. was incorporated in 1990 and is headquartered in San Jose, California.
Read More on Rambus

Today's Range

Now: $87.60
Low: $84.83
High: $87.94

50 Day Range

MA: $92.86
Low: $80.39
High: $105.79

52 Week Range

Now: $87.60
Low: $77.89
High: $174.10

Volume

10,903,741 shs

Average Volume

1,799,521 shs

Market Capitalization

$9.50 billion

P/E Ratio

40.18

Dividend Yield

N/A

Beta

1.88

Who are the company insiders with the largest holdings of Rambus?

Rambus' top insider investors include:
  1. Ronald D Black (CEO)
  2. Luc Seraphin (CEO)
  3. Luc Seraphin (Insider)
  4. Satish Rishi (SVP)
  5. Satish Rishi (CFO)
  6. Laura Stark (SVP)
  7. Xianzhi Sean Fan (COO)
  8. Xianzhi Sean Fan (EVP)
  9. Jae Kim (SVP)
  10. Desmond Lynch (CFO)
Learn More about top insider investors at Rambus.

Who are the major institutional investors of Rambus?

Rambus' top institutional shareholders include:
  1. BlackRock Inc. — 12.88%
  2. Bank of America Corp DE — 1.12%
  3. Bank of New York Mellon Corp — 0.76%
  4. The Manufacturers Life Insurance Company — 0.74%
  5. Wellington Management Group LLP — 0.39%
  6. Nykredit A S — 0.37%
Learn More about top institutional investors of Rambus stock.

Which major investors are selling Rambus stock?

In the previous quarter, RMBS stock was sold by these institutional investors:
  1. Wellington Management Group LLP
  2. HighTower Advisors LLC
  3. Algert Global LLC
  4. Assenagon Asset Management S.A.
  5. Moody National Bank Trust Division
  6. Raiffeisen Bank International AG
  7. Amundi
  8. Hennion & Walsh Asset Management Inc.
During the previous year, company insiders that have sold Rambus company stock include:
  1. Luc Seraphin (CEO)
  2. Xianzhi Sean Fan (EVP)
  3. Desmond Lynch (CFO)
  4. Emiko Higashi (Director)
  5. Meera Rao (Director)
  6. Eric B Stang (Director)
  7. Necip Sayiner (Director)
Learn More investors selling Rambus stock.

Which major investors are buying Rambus stock?

In the previous quarter, RMBS stock was acquired by institutional investors including:
  1. BlackRock Inc.
  2. Bank of America Corp DE
  3. Bank of New York Mellon Corp
  4. The Manufacturers Life Insurance Company
  5. Nykredit A S
  6. Maple Rock Capital Partners Inc.
  7. Canada Pension Plan Investment Board
  8. Nykredit A S

Rambus Active Insiders

Luc Seraphin
Luc Seraphin (Age 62)
CEO
1 recent trades
Xianzhi Sean Fan
Xianzhi Sean Fan (Age 60)
COO
1 recent trades
Desmond Lynch
Desmond Lynch (Age 46)
CFO
Charles Kissner
Charles Kissner
Director
Necip Sayiner
Necip Sayiner
Director
1 recent trades
Eric B Stang
Eric B Stang
Director
1 recent trades
Emiko Higashi
Emiko Higashi
Director
2 recent trades
Steven Laub
Director
Meera Rao
Meera Rao
Director
2 recent trades
John Shinn
John Shinn (Age 57)
SVP
Keith A Jones
Keith A Jones (Age 56)
Insider