Rambus Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:RMBS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
03 Jun 26	SellUS$850,750	Necip Sayiner	Individual	5,000	US$170.15
02 Jun 26	SellUS$1,605,000	Emiko Higashi	Individual	10,000	US$163.00
01 Jun 26	SellUS$730,000	Eric Stang	Individual	5,000	US$146.00
26 May 26	SellUS$5,751,226	Xianzhi Fan	Individual	37,914	US$152.35
26 May 26	SellUS$787,851	Emiko Higashi	Individual	5,000	US$157.57
22 May 26	SellUS$143,630	John Shinn	Individual	1,000	US$143.63
08 May 26	SellUS$1,278,888	Necip Sayiner	Individual	9,824	US$130.18
07 May 26	SellUS$188,279	Steven Laub	Individual	1,500	US$125.52
10 Mar 26	SellUS$404,008	John Shinn	Individual	4,556	US$89.55
10 Nov 25	SellUS$958,900	Eric Stang	Individual	9,000	US$111.79
11 Sep 25	SellUS$642,226	Necip Sayiner	Individual	7,500	US$85.63
29 Aug 25	SellUS$177,995	Steven Laub	Individual	2,261	US$78.72
13 Aug 25	SellUS$83,581	Emiko Higashi	Individual	1,075	US$77.75
08 Aug 25	SellUS$551,448	Necip Sayiner	Individual	7,500	US$73.53
04 Aug 25	SellUS$58,945	John Shinn	Individual	790	US$74.61
04 Aug 25	SellUS$83,325	Emiko Higashi	Individual	1,111	US$75.00

Insider Trading Volume

Insider Buying: RMBS insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of RMBS?
Owner Type	Number of Shares	Ownership Percentage
State or Government	42,268	0.0368%
Individual Insiders	764,901	0.666%
Institutions	114,073,621	99.3%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 74.14% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
15.1%	BlackRock, Inc.	16,288,529	US$2.3b	0.19%	0.03%
10.4%	FMR LLC	11,288,460	US$1.6b	241%	0.07%
6.14%	Vanguard Portfolio Management, LLC	6,644,320	US$938.0m	0%	0.04%
5.33%	T. Rowe Price Group, Inc.	5,767,709	US$814.2m	7.09%	0.06%
5.22%	Invesco Ltd.	5,640,795	US$796.3m	50.7%	0.18%
4.46%	Vanguard Capital Management, LLC	4,827,854	US$681.5m	0%	0.01%
4.04%	State Street Global Advisors, Inc.	4,373,617	US$617.4m	2.87%	0.02%
2.89%	Geode Capital Management, LLC	3,124,495	US$441.1m	9.91%	0.02%
1.8%	EdgePoint Investment Group Inc.	1,947,742	US$275.0m	38.5%	1.2%
1.66%	Dimensional Fund Advisors LP	1,795,295	US$253.4m	-5.19%	0.03%
1.57%	Norges Bank Investment Management	1,701,551	US$240.2m	0%	0.01%
1.55%	JP Morgan Asset Management	1,671,974	US$236.0m	-11.2%	0.02%
1.45%	Swedbank Robur Fonder AB	1,563,000	US$220.6m	14.7%	0.14%
1.23%	Northern Trust Global Investments	1,334,095	US$188.3m	1.41%	0.02%
1.23%	Charles Schwab Investment Management, Inc.	1,326,402	US$187.2m	-0.1%	0.02%
1.2%	Neuberger Berman Investment Advisers LLC	1,302,169	US$183.8m	-0.29%	0.12%
1.18%	Congress Asset Management Company, LLP	1,275,978	US$180.1m	-9.54%	1.12%
1.15%	AQR Capital Management, LLC	1,242,344	US$175.4m	76.5%	0.07%
1.11%	UBS Asset Management AG	1,196,993	US$169.0m	71%	0.01%
1.04%	Bank of America Corporation	1,119,787	US$158.1m	15.1%	0.03%
0.96%	Bessemer Investment Management LLC	1,039,905	US$146.8m	1,010%	0.17%
0.93%	Citigroup Inc.	1,007,548	US$142.2m	100%	0.07%
0.9%	Columbia Management Investment Advisers, LLC	975,209	US$137.7m	72.1%	0.02%
0.79%	Invesco Capital Management LLC	858,253	US$121.2m	111%	0.03%
0.79%	Wellington Management Group LLP	856,598	US$120.9m	-8.28%	0.02%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/06/20 10:38
End of Day Share Price	2026/06/18 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Rambus Inc. is covered by 18 analysts. 8 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Brett Simpson	Arete Research Services LLP
James Fontanelli	Arete Research Services LLP
Tristan Gerra	Baird