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RMBS Insider Trading

Insider Ownership Percentage: 0.75%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $10,448,009.91

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: $91.70
Price Change: ▼ Price Decrease of -2.92 (-3.09%)
As of 03/20/2026 05:00 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
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  
8/29/2023Xianzhi Sean FanCOOSell17,309$54.99$951,821.91168,223View SEC Filing Icon  
5/15/2023Luc SeraphinCEOSell4,556$49.39$225,020.84255,332View SEC Filing Icon  
5/8/2023Luc SeraphinCEOSell12,500$47.98$599,750.00255,414View SEC Filing Icon  
5/1/2023Luc SeraphinCEOSell12,500$44.83$560,375.00267,914View SEC Filing Icon  
4/24/2023Luc SeraphinCEOSell12,500$49.41$617,625.00279,653View SEC Filing Icon  
4/17/2023Luc SeraphinCEOSell12,500$49.58$619,750.00292,153View SEC Filing Icon  
4/10/2023Luc SeraphinCEOSell12,500$48.68$608,500.00304,653View SEC Filing Icon  
4/3/2023Luc SeraphinCEOSell12,500$51.28$641,000.00317,153View SEC Filing Icon  
3/27/2023Luc SeraphinCEOSell12,500$44.99$562,375.00329,653View 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
3/20/2026Hsbc Holdings PLC20,434$1.89M0.0%+60.9%0.019%Search for SEC Filing on Google Icon
3/17/2026Rockefeller Capital Management L.P.2,684$0.25M0.0%+22.3%0.002%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC4,297$0.40M0.0%-32.9%0.004%Search for SEC Filing on Google Icon
3/6/2026Hsbc Holdings PLC20,434$1.89M0.0%+60.9%0.019%Search for SEC Filing on Google Icon
3/3/2026Caitong International Asset Management Co. Ltd876$80K0.0%N/A0.001%Search for SEC Filing on Google Icon
2/26/2026Oak Grove Capital LLC7,600$0.70M0.1%+1.3%0.007%Search for SEC Filing on Google Icon
2/24/2026Pacer Advisors Inc.20,459$1.88M0.0%+8.5%0.019%Search for SEC Filing on Google Icon
2/23/2026Virtu Financial LLC2,756$0.25M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/20/2026Kovitz Investment Group Partners LLC12,789$1.18M0.0%-18.6%0.012%Search for SEC Filing on Google Icon
2/19/2026T. Rowe Price Investment Management Inc.687,840$63.21M0.0%-5.7%0.639%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.4,148,653$381.22M0.1%+70.6%3.854%Search for SEC Filing on Google Icon
2/19/2026Corient Private Wealth LLC6,538$0.60M0.0%+2.1%0.006%Search for SEC Filing on Google Icon
2/18/2026Mercer Global Advisors Inc. ADV9,145$0.84M0.0%+17.9%0.008%Search for SEC Filing on Google Icon
2/18/2026Vident Advisory LLC66,071$6.07M0.1%+15.7%0.061%Search for SEC Filing on Google Icon
2/18/2026State of Tennessee Department of Treasury42,268$3.88M0.0%-4.1%0.039%Search for SEC Filing on Google Icon
2/18/2026Mackenzie Financial Corp24,149$2.28M0.0%+31.2%0.022%Search for SEC Filing on Google Icon
2/18/2026Regal Partners Ltd6,000$0.55M0.0%+50.0%0.006%Search for SEC Filing on Google Icon
2/18/2026NewEdge Advisors LLC1,956$0.18M0.0%+229.3%0.002%Search for SEC Filing on Google Icon
2/18/2026Empowered Funds LLC9,176$0.84M0.0%+106.2%0.009%Search for SEC Filing on Google Icon
2/18/2026VARCOV Co.2,672$0.25M0.1%N/A0.002%Search for SEC Filing on Google Icon
2/18/2026Wellington Management Group LLP933,934$85.82M0.0%+24.5%0.868%Search for SEC Filing on Google Icon
2/18/2026SummitTX Capital L.P.97,372$8.95M0.3%+44.5%0.090%Search for SEC Filing on Google Icon
2/18/2026Twinbeech Capital LP2,600$0.24M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/18/2026Occudo Quantitative Strategies LP3,494$0.32M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/18/2026Osterweis Capital Management Inc.89,065$8.18M0.3%-41.2%0.083%Search for SEC Filing on Google Icon
2/18/2026Man Group plc162,940$14.97M0.0%+21.3%0.151%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC379,515$34.87M0.0%-1.2%0.353%Search for SEC Filing on Google Icon
2/18/2026Gotham Asset Management LLC17,785$1.63M0.0%+438.1%0.017%Search for SEC Filing on Google Icon
2/18/2026Evolve Private Wealth LLC7,339$0.67M0.0%N/A0.007%Search for SEC Filing on Google Icon
2/17/2026Freestone Grove Partners LP3,574$0.33M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/17/2026Guggenheim Capital LLC23,505$2.16M0.0%+63.8%0.022%Search for SEC Filing on Google Icon
2/17/2026Caisse de depot et placement du Quebec447,309$41.10M0.1%+17.5%0.416%Search for SEC Filing on Google Icon
2/17/2026EdgePoint Investment Group Inc.1,406,686$129.26M1.1%-47.6%1.307%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC3,505$0.32M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/17/2026Integrated Advisors Network LLC6,475$0.60M0.0%-11.4%0.006%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC711,126$65.35M0.0%+29.9%0.661%Search for SEC Filing on Google Icon
2/17/2026Abel Hall LLC4,994$0.46M0.1%N/A0.005%Search for SEC Filing on Google Icon
2/17/2026EFG International AG37,531$3.45M0.1%N/A0.035%Search for SEC Filing on Google Icon
2/17/2026Cetera Investment Advisers28,391$2.61M0.0%+36.1%0.026%Search for SEC Filing on Google Icon
2/17/2026Lazard Asset Management LLC297,870$27.37M0.0%-0.4%0.277%Search for SEC Filing on Google Icon
2/17/2026Equitable Holdings Inc.6,933$0.64M0.0%+4.1%0.006%Search for SEC Filing on Google Icon
2/17/2026ArrowMark Colorado Holdings LLC272,010$25M0.5%N/A0.253%Search for SEC Filing on Google Icon
2/17/2026Trexquant Investment LP74,943$6.89M0.1%N/A0.070%Search for SEC Filing on Google Icon
2/17/2026Amundi12,371$1.14M0.0%+62.5%0.011%Search for SEC Filing on Google Icon
2/17/2026FIL Ltd11,774$1.08M0.0%N/A0.011%Search for SEC Filing on Google Icon
2/17/2026Jump Financial LLC11,499$1.06M0.0%N/A0.011%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD5,385,570$494.88M0.1%+2.7%5.003%Search for SEC Filing on Google Icon
2/17/2026T. Rowe Price Investment Management Inc.23,273$2.14M0.0%-96.8%0.022%Search for SEC Filing on Google Icon
2/17/2026Weiss Asset Management LP36,300$3.34M0.0%N/A0.034%Search for SEC Filing on Google Icon
2/17/2026Himension Capital Singapore PTE. LTD.6,460$0.59M0.0%+161.5%0.006%Search for SEC Filing on Google Icon
2/17/2026Tower Research Capital LLC TRC 24,705$2.27M0.1%+554.4%0.023%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.142,390$13.08M0.0%-4.0%0.132%Search for SEC Filing on Google Icon
2/17/2026Granahan Investment Management LLC265,516$24.40M1.0%+11.4%0.247%Search for SEC Filing on Google Icon
2/17/2026Kemnay Advisory Services Inc.1,072$99K0.0%N/A0.001%Search for SEC Filing on Google Icon
2/17/2026State of Wisconsin Investment Board101,320$9.31M0.0%-11.9%0.094%Search for SEC Filing on Google Icon
2/17/2026Captrust Financial Advisors40,876$3.76M0.0%-2.8%0.038%Search for SEC Filing on Google Icon
2/17/2026&PARTNERS7,241$0.67M0.0%+264.6%0.007%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada34,004$3.12M0.0%-55.4%0.032%Search for SEC Filing on Google Icon
2/17/2026Blair William & Co. IL5,055$0.47M0.0%+3.2%0.005%Search for SEC Filing on Google Icon
2/17/2026Rakuten Investment Management Inc.9,929$0.93M0.0%-81.0%0.009%Search for SEC Filing on Google Icon
2/17/2026Rice Hall James & Associates LLC44,945$4.13M0.2%-7.9%0.042%Search for SEC Filing on Google Icon
2/17/2026University of Texas Texas AM Investment Management Co.308$28K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/16/2026Thornburg Investment Management Inc.57,554$5.29M0.1%-16.1%0.053%Search for SEC Filing on Google Icon
2/16/2026Truvestments Capital LLC3,607$0.33M0.1%-4.9%0.003%Search for SEC Filing on Google Icon
2/16/2026Vanguard Personalized Indexing Management LLC21,720$2M0.0%-0.5%0.020%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC4,091$0.38M0.0%-36.0%0.004%Search for SEC Filing on Google Icon
2/16/2026Panagora Asset Management Inc.434,703$39.95M0.1%-0.8%0.404%Search for SEC Filing on Google Icon
2/16/2026MML Investors Services LLC9,249$0.85M0.0%+26.1%0.009%Search for SEC Filing on Google Icon
2/16/2026Mariner LLC19,358$1.78M0.0%-2.6%0.018%Search for SEC Filing on Google Icon
2/16/2026Nicholas Investment Partners LP47,803$4.39M0.3%+187.5%0.044%Search for SEC Filing on Google Icon
2/16/2026Entropy Technologies LP12,810$1.18M0.1%N/A0.012%Search for SEC Filing on Google Icon
2/16/2026Epoch Investment Partners Inc.17,603$1.62M0.0%-12.7%0.016%Search for SEC Filing on Google Icon
2/16/2026Arax Advisory Partners1,498$0.14M0.0%-82.4%0.001%Search for SEC Filing on Google Icon
2/16/2026Aurora Investment Counsel19,198$1.76M0.9%-18.6%0.018%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC1,022,984$94M0.0%+14.3%0.950%Search for SEC Filing on Google Icon
2/16/2026Aigen Investment Management LP2,636$0.24M0.1%N/A0.002%Search for SEC Filing on Google Icon
2/13/2026FORA Capital LLC15,846$1.46M0.2%+153.3%0.015%Search for SEC Filing on Google Icon
2/13/2026Marshall Wace LLP16,300$1.50M0.0%N/A0.015%Search for SEC Filing on Google Icon
2/13/2026The Manufacturers Life Insurance Company 113,988$10.49M0.0%-1.2%0.106%Search for SEC Filing on Google Icon
2/13/2026CANADA LIFE ASSURANCE Co61,971$5.69M0.0%-24.6%0.058%Search for SEC Filing on Google Icon
2/13/2026Inspire Advisors LLC6,220$0.57M0.1%N/A0.006%Search for SEC Filing on Google Icon
2/13/2026Segall Bryant & Hamill LLC108,429$9.96M0.1%-56.3%0.101%Search for SEC Filing on Google Icon
2/13/2026Bridgewater Associates LP154,296$14.18M0.1%-11.9%0.143%Search for SEC Filing on Google Icon
2/13/2026Stifel Financial Corp29,473$2.71M0.0%+43.1%0.027%Search for SEC Filing on Google Icon
2/13/2026Neuberger Berman Group LLC1,305,951$120.15M0.1%-11.9%1.213%Search for SEC Filing on Google Icon
2/13/2026Smartleaf Asset Management LLC2,434$0.23M0.0%-17.0%0.002%Search for SEC Filing on Google Icon
2/13/2026Acumen Wealth Advisors LLC276$25K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/13/2026Morgan Stanley885,092$81.33M0.0%-17.0%0.822%Search for SEC Filing on Google Icon
2/13/2026Schroder Investment Management Group99,055$9.38M0.0%-30.8%0.092%Search for SEC Filing on Google Icon
2/13/2026Public Sector Pension Investment Board305,209$28.05M0.1%N/A0.284%Search for SEC Filing on Google Icon
2/13/2026Rafferty Asset Management LLC935,784$85.99M0.3%+3.8%0.869%Search for SEC Filing on Google Icon
2/13/2026First Trust Advisors LP300,156$27.58M0.0%+49.7%0.279%Search for SEC Filing on Google Icon
2/13/2026FirstWave Capital Management LLC9,933$0.91M0.5%N/A0.009%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.1,327,693$122M0.0%-0.8%1.233%Search for SEC Filing on Google Icon
2/13/2026Police & Firemen s Retirement System of New Jersey28,951$2.66M0.0%-3.9%0.027%Search for SEC Filing on Google Icon
2/13/2026State Street Corp4,251,563$390.68M0.0%-3.2%3.949%Search for SEC Filing on Google Icon
2/13/2026Van ECK Associates Corp147,123$13.52M0.0%-3.5%0.137%Search for SEC Filing on Google Icon
2/13/2026Vontobel Holding Ltd.4,879$0.45M0.0%-11.3%0.005%Search for SEC Filing on Google Icon
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC244,344$22.45M0.0%-3.8%0.227%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN216,914$19.93M0.0%+19.9%0.201%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: $91.70
Low: $90.11
High: $95.09

50 Day Range

MA: $101.96
Low: $87.59
High: $125.93

52 Week Range

Now: $91.70
Low: $40.12
High: $135.75

Volume

2,932,426 shs

Average Volume

1,870,141 shs

Market Capitalization

$9.92 billion

P/E Ratio

43.46

Dividend Yield

N/A

Beta

1.55

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

Rambus' top insider investors include:
  1. Luc Seraphin (CEO)
  2. Xianzhi Sean Fan (COO)
  3. Desmond Lynch (CFO)
  4. Emiko Higashi (Director)
  5. Necip Sayiner (Director)
  6. Eric B Stang (Director)
  7. Meera Rao (Director)
  8. John Shinn (SVP)
  9. Steven Laub (Director)
Learn More about top insider investors at Rambus.

Who are the major institutional investors of Rambus?

Rambus' top institutional shareholders include:
  1. Vanguard Group Inc. — 11.42%
  2. Price T Rowe Associates Inc. MD — 5.00%
  3. State Street Corp — 3.95%
  4. Invesco Ltd. — 3.85%
  5. Geode Capital Management LLC — 2.64%
  6. JPMorgan Chase & Co. — 1.92%
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. EdgePoint Investment Group Inc.
  2. T. Rowe Price Investment Management Inc.
  3. Bank of New York Mellon Corp
  4. JPMorgan Chase & Co.
  5. Vanguard Group Inc.
  6. Swedbank AB
  7. Swedbank AB
  8. Lord Abbett & CO. LLC
During the previous year, company insiders that have sold Rambus company stock include:
  1. Luc Seraphin (CEO)
  2. Xianzhi Sean Fan (COO)
  3. Desmond Lynch (CFO)
  4. Emiko Higashi (Director)
  5. Necip Sayiner (Director)
  6. Eric B Stang (Director)
  7. Meera Rao (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. Invesco Ltd.
  2. Norges Bank
  3. Fisher Asset Management LLC
  4. Public Sector Pension Investment Board
  5. ArrowMark Colorado Holdings LLC
  6. Wellington Management Group LLP
  7. AQR Capital Management LLC
  8. Axiom Investors LLC DE