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
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$83,325	Emiko Higashi	Individual	1,111	US$75.00
04 Aug 25	SellUS$58,945	John Shinn	Individual	790	US$74.61
27 May 25	SellUS$101,816	Steven Laub	Individual	1,847	US$55.13
19 May 25	SellUS$202,961	Steven Laub	Individual	3,653	US$55.56
09 May 25	SellUS$186,778	Eric Stang	Individual	3,653	US$51.13
19 Feb 25	SellUS$3,559,037	Xianzhi Fan	Individual	52,327	US$68.02
19 Feb 25	SellUS$308,681	Necip Sayiner	Individual	4,625	US$66.74
12 Dec 24	SellUS$143,123	John Shinn	Individual	2,462	US$58.13
12 Dec 24	SellUS$314,854	Meera Rao	Individual	5,408	US$58.22

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	44,078	0.0409%
Individual Insiders	658,901	0.612%
General Public	4,320,819	4.01%
Institutions	102,626,335	95.3%

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

Top Shareholders

Top 25 shareholders own 66.63% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
14.7%	BlackRock, Inc.	15,791,326	US$1.5b	5.42%	0.02%
11.8%	The Vanguard Group, Inc.	12,701,773	US$1.2b	1.12%	0.01%
5.55%	T. Rowe Price Group, Inc.	5,974,391	US$571.0m	19.3%	0.05%
4.08%	State Street Global Advisors, Inc.	4,389,985	US$419.6m	-2.64%	0.01%
2.55%	Geode Capital Management, LLC	2,748,501	US$262.7m	2.26%	0.01%
2.49%	EdgePoint Investment Group Inc.	2,682,956	US$256.4m	-3.74%	1.12%
2.14%	JP Morgan Asset Management	2,302,863	US$220.1m	-14.5%	0.02%
1.93%	Invesco Ltd.	2,079,445	US$198.7m	-0.05%	0.05%
1.83%	Norges Bank Investment Management	1,972,325	US$188.5m	0%	0.01%
1.79%	Dimensional Fund Advisors LP	1,928,697	US$184.3m	0.57%	0.02%
1.69%	AllianceBernstein L.P.	1,822,030	US$174.1m	573%	0.05%
1.58%	Swedbank Robur Fonder AB	1,700,000	US$162.5m	0%	0.09%
1.48%	BNY Asset Management	1,591,176	US$152.1m	-20.8%	0.03%
1.38%	Neuberger Berman Investment Advisers LLC	1,482,008	US$141.6m	9.94%	0.1%
1.29%	Northern Trust Global Investments	1,385,874	US$132.4m	-0.56%	0.02%
1.27%	FMR LLC	1,366,610	US$130.6m	312%	0.01%
1.25%	Congress Asset Management Company, LLP	1,347,185	US$128.8m	5.5%	0.87%
1.24%	Charles Schwab Investment Management, Inc.	1,338,914	US$128.0m	4.03%	0.02%
1.16%	Bank of America Corporation	1,244,721	US$119.0m	345%	0.03%
1.11%	Raymond James Financial, Inc.	1,190,320	US$113.8m	-13.3%	0.04%
0.96%	Emerald Advisers, LLC	1,028,969	US$98.3m	-8.64%	1.83%
0.95%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	1,027,032	US$98.2m	10.4%	0.02%
0.84%	Rafferty Asset Management, LLC	901,750	US$86.2m	3.49%	0.27%
0.83%	Barclays PLC	893,722	US$85.4m	187%	0.04%
0.78%	Hood River Capital Management LLC	838,440	US$80.1m	-12.3%	0.87%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/11/30 02:03
End of Day Share Price	2025/11/28 00:00
Earnings	2025/09/30
Annual Earnings	2024/12/31

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 17 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
Nam Hyung Kim	Arete Research Services LLP
Brett Simpson	Arete Research Services LLP
Tristan Gerra	Baird