RMBS Insider Trading

Insider Trading Chart
Insider Trading History
Frequently Asked Questions
About

Insider Ownership Percentage: 1.00%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $7,368,059.96

Rambus Insider Trading History Chart

Rambus Share Price & Price History

^$52.22

▲ +1.28 (2.51%)

As of 04/28/2025 05:00 PM ET

Days: 30 | 90 | 365

Rambus Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
4/23/2025	Luc Seraphin	CEO	Sell	6,348	$46.97	$298,165.56	319,241
4/15/2025	Luc Seraphin	CEO	Sell	10,000	$47.79	$477,900.00	326,844
4/8/2025	Luc Seraphin	CEO	Sell	10,000	$46.81	$468,100.00	336,844
4/1/2025	Luc Seraphin	CEO	Sell	10,000	$50.88	$508,800.00	346,844
3/25/2025	Luc Seraphin	CEO	Sell	10,000	$58.64	$586,400.00	306,931
3/18/2025	Luc Seraphin	CEO	Sell	10,000	$53.79	$537,900.00	316,931
2/19/2025	Necip Sayiner	Director	Sell	4,625	$66.74	$308,672.50	42,000
2/19/2025	Xianzhi Sean Fan	COO	Sell	52,327	$68.02	$3,559,282.54	93,841
12/12/2024	Meera Rao	Director	Sell	5,408	$58.22	$314,853.76	29,090
5/7/2024	Eric B. Stang	Director	Sell	5,408	$56.95	$307,985.60	32,422
4/16/2024	Luc Seraphin	CEO	Sell	5,530	$58.66	$324,389.80	262,791
4/9/2024	Luc Seraphin	CEO	Sell	15,000	$61.35	$920,250.00	268,321
4/2/2024	Luc Seraphin	CEO	Sell	15,000	$59.93	$898,950.00	283,321
3/26/2024	John Shinn	SVP	Sell	3,947	$62.71	$247,516.37	16,663
3/26/2024	Luc Seraphin	CEO	Sell	15,000	$62.69	$940,350.00	259,755
3/19/2024	John Shinn	SVP	Sell	3,949	$58.84	$232,359.16	20,610
3/19/2024	Luc Seraphin	CEO	Sell	15,000	$58.35	$875,250.00	274,755
3/12/2024	John Shinn	SVP	Sell	3,889	$62.68	$243,762.52	24,559
3/12/2024	Luc Seraphin	CEO	Sell	15,000	$62.69	$940,350.00	289,755
3/11/2024	Desmond Lynch	CFO	Sell	7,837	$62.18	$487,304.66	41,958
3/7/2024	John Shinn	SVP	Sell	3,928	$64.93	$255,045.04	28,448
3/5/2024	Luc Seraphin	CEO	Sell	15,000	$62.17	$932,550.00	304,755
2/20/2024	Xianzhi Sean Fan	COO	Sell	2,004	$55.00	$110,220.00	121,229
12/11/2023	Xianzhi Sean Fan	COO	Sell	16,904	$66.35	$1,121,580.40	151,319
12/7/2023	Desmond Lynch	CFO	Sell	1,527	$64.64	$98,705.28	64,198
11/15/2023	Steven Laub	Director	Sell	2,000	$66.91	$133,820.00	7,761
11/8/2023	Emiko Higashi	Director	Sell	8,000	$60.00	$480,000.00	57,686
11/6/2023	Necip Sayiner	Director	Sell	10,000	$57.43	$574,300.00	28,653
8/29/2023	Xianzhi Sean Fan	COO	Sell	17,309	$54.99	$951,821.91	168,223
5/15/2023	Luc Seraphin	CEO	Sell	4,556	$49.39	$225,020.84	255,332
5/8/2023	Luc Seraphin	CEO	Sell	12,500	$47.98	$599,750.00	255,414
5/1/2023	Luc Seraphin	CEO	Sell	12,500	$44.83	$560,375.00	267,914
4/24/2023	Luc Seraphin	CEO	Sell	12,500	$49.41	$617,625.00	279,653
4/17/2023	Luc Seraphin	CEO	Sell	12,500	$49.58	$619,750.00	292,153
4/10/2023	Luc Seraphin	CEO	Sell	12,500	$48.68	$608,500.00	304,653
4/3/2023	Luc Seraphin	CEO	Sell	12,500	$51.28	$641,000.00	317,153
3/27/2023	Luc Seraphin	CEO	Sell	12,500	$44.99	$562,375.00	329,653
3/20/2023	Luc Seraphin	CEO	Sell	12,500	$44.20	$552,500.00	342,153
3/13/2023	Luc Seraphin	CEO	Sell	12,500	$41.06	$513,250.00	354,653
2/13/2023	Eric B. Stang	Director	Sell	6,000	$45.46	$272,760.00	27,180
2/10/2023	Necip Sayiner	Director	Sell	2,873	$45.53	$130,807.69	25,000
11/18/2022	Xianzhi Sean Fan	COO	Sell	52,852	$37.88	$2,002,033.76	127,886
11/15/2022	Necip Sayiner	Director	Sell	15,000	$38.16	$572,400.00	27,873
11/15/2022	Xianzhi Sean Fan	COO	Sell	51,772	$38.51	$1,993,739.72	191,015
11/3/2022	Eric B. Stang	Director	Sell	7,500	$34.25	$256,875.00	33,180
5/9/2022	Charles Kissner	Director	Sell	9,674	$24.78	$239,721.72	18,747
5/5/2022	Charles Kissner	Director	Sell	20,000	$25.91	$518,200.00	48,421

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

Rambus Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
4/29/2025	Moody Aldrich Partners LLC	45,038	$2.33M	0.5%	-1.5%	0.042%
4/28/2025	Principal Financial Group Inc.	506,713	$26.24M	0.0%	+53.5%	0.472%
4/28/2025	Meritage Portfolio Management	41,144	$2.13M	0.1%	+63.2%	0.038%
4/28/2025	Teacher Retirement System of Texas	37,794	$1.96M	0.0%	+45.6%	0.035%
4/28/2025	WCM Investment Management LLC	388,655	$20.87M	0.1%	+0.6%	0.362%
4/25/2025	New York State Teachers Retirement System	65,161	$3.37M	0.0%	+4.5%	0.061%
4/25/2025	Amalgamated Bank	46,920	$2.43M	0.0%	-3.9%	0.044%
4/25/2025	KBC Group NV	4,765	$0.25M	0.0%	+18.9%	0.004%
4/25/2025	Lisanti Capital Growth LLC	51,925	$2.69M	0.8%	N/A	0.048%
4/25/2025	K.J. Harrison & Partners Inc	7,500	$0.39M	0.1%	N/A	0.007%
4/24/2025	Tsfg LLC	496	$26K	0.0%	N/A	0.000%
4/24/2025	Allspring Global Investments Holdings LLC	10,602	$0.55M	0.0%	+53.9%	0.010%
4/24/2025	Schwartz Investment Counsel Inc.	380,337	$19.69M	0.7%	N/A	0.354%
4/24/2025	Mirae Asset Global Investments Co. Ltd.	34,979	$1.88M	0.0%	+781.5%	0.033%
4/24/2025	Diversified Trust Co	30,592	$1.58M	0.0%	+1.8%	0.028%
4/23/2025	Sequoia Financial Advisors LLC	5,041	$0.26M	0.0%	+19.1%	0.005%
4/23/2025	Aspetuck Financial Management LLC	42,275	$2.19M	1.9%	N/A	0.039%
4/23/2025	Yorktown Management & Research Co Inc	7,000	$0.36M	0.4%	-60.7%	0.007%
4/23/2025	Oppenheimer Asset Management Inc.	5,762	$0.30M	0.0%	+4.8%	0.005%
4/22/2025	Cambridge Investment Research Advisors Inc.	6,997	$0.36M	0.0%	-14.6%	0.007%
4/21/2025	Envestnet Portfolio Solutions Inc.	5,605	$0.29M	0.0%	-10.4%	0.005%
4/21/2025	State of Alaska Department of Revenue	12,490	$0.65M	0.0%	+2.8%	0.012%
4/17/2025	Vaughan Nelson Investment Management L.P.	562,813	$29.14M	0.3%	-23.5%	0.524%
4/16/2025	Wealth Enhancement Advisory Services LLC	6,912	$0.36M	0.0%	+57.4%	0.006%
4/16/2025	BNC Wealth Management LLC	12,568	$0.65M	0.2%	-10.7%	0.012%
4/15/2025	Greenwood Capital Associates LLC	10,402	$0.54M	0.1%	+54.0%	0.010%
4/15/2025	Fifth Third Bancorp	1,418	$73K	0.0%	+24.8%	0.001%
4/15/2025	Assenagon Asset Management S.A.	178,858	$9.26M	0.0%	-76.5%	0.166%
4/15/2025	Integrated Advisors Network LLC	9,340	$0.48M	0.0%	N/A	0.009%
4/15/2025	SG Americas Securities LLC	490,547	$25.40M	0.1%	-11.2%	0.457%
4/15/2025	Fiduciary Financial Group LLC	5,498	$0.29M	0.1%	N/A	0.005%
4/15/2025	GAMMA Investing LLC	4,573	$0.24M	0.0%	+45.8%	0.004%
4/14/2025	Yousif Capital Management LLC	36,401	$1.89M	0.0%	-2.8%	0.034%
4/14/2025	Harbor Capital Advisors Inc.	76,619	$3.97M	0.2%	-10.8%	0.071%
4/14/2025	Portside Wealth Group LLC	8,924	$0.46M	0.1%	+91.7%	0.008%
4/14/2025	First Citizens Bank & Trust Co.	3,873	$0.20M	0.0%	N/A	0.004%
4/14/2025	Park Avenue Securities LLC	21,340	$1.11M	0.0%	N/A	0.020%
4/14/2025	UMB Bank n.a.	1,233	$64K	0.0%	+129.6%	0.001%
4/11/2025	Tealwood Asset Management Inc.	20,310	$1.05M	0.5%	N/A	0.019%
4/11/2025	Congress Asset Management Co.	1,199,564	$62.11M	0.5%	+38.5%	1.116%
4/10/2025	Portside Wealth Group LLC	4,656	$0.25M	0.0%	N/A	0.004%
4/10/2025	Hennion & Walsh Asset Management Inc.	16,793	$0.87M	0.0%	+30.1%	0.016%
4/9/2025	NBC Securities Inc.	9,226	$0.48M	0.0%	+102,411.1%	0.009%
4/8/2025	Rhumbline Advisers	333,069	$17.25M	0.0%	+0.3%	0.310%
4/8/2025	Parallel Advisors LLC	1,629	$84K	0.0%	+34.1%	0.002%
4/7/2025	Summit Global Investments	5,005	$0.26M	0.0%	N/A	0.005%
4/7/2025	GAMMA Investing LLC	236,768	$12.26M	0.0%	+7,447.6%	0.220%
4/4/2025	Moody National Bank Trust Division	9,030	$0.47M	0.0%	+134.7%	0.008%
4/3/2025	Versant Capital Management Inc	1,507	$78K	0.0%	+112.9%	0.001%
3/24/2025	Wellington Management Group LLP	1,248,445	$65.99M	0.0%	-14.4%	1.162%
3/18/2025	California State Teachers Retirement System	100,643	$5.32M	0.0%	-1.4%	0.094%
3/17/2025	Wealth Enhancement Advisory Services LLC	4,390	$0.23M	0.0%	N/A	0.004%
2/20/2025	Mackenzie Financial Corp	7,081	$0.37M	0.0%	-2.3%	0.007%
2/20/2025	Forum Financial Management LP	7,017	$0.37M	0.0%	-12.5%	0.007%
2/19/2025	Public Employees Retirement System of Ohio	31,786	$1.68M	0.0%	-81.6%	0.030%
2/18/2025	Orion Capital Management LLC	703	$37K	0.0%	N/A	0.001%
2/18/2025	Castleark Management LLC	139,890	$7.40M	0.3%	N/A	0.131%
2/18/2025	PharVision Advisers LLC	4,778	$0.25M	0.2%	N/A	0.004%
2/17/2025	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	290,392	$15.35M	0.0%	+18.8%	0.272%
2/17/2025	Vident Advisory LLC	73,714	$3.90M	0.1%	+11.6%	0.069%
2/17/2025	Westwood Holdings Group Inc.	1,127,854	$59.62M	0.5%	-21.1%	1.058%
2/17/2025	Two Sigma Advisers LP	435,300	$23.01M	0.1%	-22.7%	0.408%
2/17/2025	Two Sigma Investments LP	529,974	$28.01M	0.1%	-35.7%	0.497%
2/17/2025	Tidal Investments LLC	16,712	$0.88M	0.0%	-2.3%	0.016%
2/17/2025	Thornburg Investment Management Inc.	88,084	$4.66M	0.1%	+27.6%	0.083%
2/17/2025	Silvercrest Asset Management Group LLC	516,133	$27.28M	0.2%	-4.3%	0.484%
2/17/2025	Point72 Asia Singapore Pte. Ltd.	31,156	$1.65M	0.4%	-50.2%	0.029%
2/17/2025	Point72 Asset Management L.P.	161,153	$8.52M	0.0%	+138.4%	0.151%
2/17/2025	ProShare Advisors LLC	49,027	$2.59M	0.0%	+24.2%	0.046%
2/17/2025	Quantinno Capital Management LP	7,413	$0.39M	0.0%	+19.6%	0.007%
2/17/2025	Man Group plc	30,707	$1.62M	0.0%	-32.2%	0.029%
2/17/2025	Nomura Holdings Inc.	14,115	$0.75M	0.0%	N/A	0.013%
2/17/2025	Nuveen Asset Management LLC	1,064,700	$56.28M	0.0%	+12.2%	0.999%
2/17/2025	Millennium Management LLC	595,055	$31.46M	0.0%	-36.5%	0.558%
2/17/2025	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	165,658	$8.76M	0.0%	-3.6%	0.155%
2/17/2025	Lazard Asset Management LLC	69,169	$3.66M	0.0%	+112.3%	0.065%
2/17/2025	Janus Henderson Group PLC	343,180	$18.14M	0.0%	-2.5%	0.322%
2/17/2025	Gotham Asset Management LLC	4,092	$0.22M	0.0%	-93.2%	0.004%
2/17/2025	Granahan Investment Management LLC	82,620	$4.37M	0.2%	-22.7%	0.078%
2/17/2025	Fred Alger Management LLC	62,508	$3.30M	0.0%	+129.2%	0.059%
2/17/2025	Deutsche Bank AG	139,002	$7.35M	0.0%	+40.1%	0.130%
2/17/2025	D. E. Shaw & Co. Inc.	394,352	$20.85M	0.0%	-50.7%	0.370%
2/17/2025	Crestline Management LP	410,113	$21.68M	0.7%	+58.8%	0.385%
2/17/2025	Cubist Systematic Strategies LLC	32,753	$1.73M	0.0%	-96.0%	0.031%
2/17/2025	Cetera Investment Advisers	24,486	$1.29M	0.0%	+3.2%	0.023%
2/17/2025	Centiva Capital LP	44,098	$2.33M	0.0%	-47.4%	0.041%
2/17/2025	Brevan Howard Capital Management LP	4,907	$0.26M	0.0%	-92.7%	0.005%
2/17/2025	Captrust Financial Advisors	55,227	$2.92M	0.0%	-45.4%	0.052%
2/17/2025	Balyasny Asset Management L.P.	113,687	$6.01M	0.0%	-48.4%	0.107%
2/17/2025	Bank of America Corp DE	415,317	$21.95M	0.0%	-37.6%	0.390%
2/17/2025	BNP Paribas Financial Markets	57,221	$3.03M	0.0%	-57.6%	0.054%
2/17/2025	Ameriprise Financial Inc.	249,130	$13.17M	0.0%	+9.1%	0.234%
2/17/2025	Algert Global LLC	292,592	$15.47M	0.4%	+12.8%	0.275%
2/17/2025	AXA S.A.	16,407	$0.87M	0.0%	-5.1%	0.015%
2/14/2025	Mercer Global Advisors Inc. ADV	6,075	$0.32M	0.0%	-41.0%	0.006%
2/14/2025	Comerica Bank	120,657	$6.38M	0.0%	+21.9%	0.113%
2/14/2025	AQR Capital Management LLC	319,731	$16.90M	0.0%	-11.7%	0.300%
2/14/2025	Emerald Mutual Fund Advisers Trust	356,958	$18.87M	1.2%	-15.4%	0.335%
2/14/2025	Lido Advisors LLC	5,007	$0.27M	0.0%	N/A	0.005%
2/14/2025	Northern Trust Corp	1,463,338	$77.35M	0.0%	+13.2%	1.373%

Data available starting January 2016

See Full Table

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.

Today's Range

Now: $52.22

$50.61

$52.65

50 Day Range

MA: $52.00

$42.90

$64.95

52 Week Range

Now: $52.22

$37.43

$69.15

Volume

2,022,584 shs

Average Volume

1,297,434 shs

Market Capitalization

$5.61 billion

P/E Ratio

31.46

Dividend Yield

N/A

Beta

1.2

Who are the company insiders with the largest holdings of Rambus?: Rambus' top insider investors include:
Luc Seraphin (CEO)
Xianzhi Sean Fan (COO)
Desmond Lynch (CFO)
Emiko Higashi (Director)
Necip Sayiner (Director)
Eric B Stang (Director)
Meera Rao (Director)
John Shinn (SVP)
Steven Laub (Director)
Learn More about top insider investors at Rambus.
Who are the major institutional investors of Rambus?: Rambus' top institutional shareholders include:
Congress Asset Management Co. — 1.12%
Vaughan Nelson Investment Management L.P. — 0.52%
Principal Financial Group Inc. — 0.47%
SG Americas Securities LLC — 0.46%
WCM Investment Management LLC — 0.36%
Schwartz Investment Counsel Inc. — 0.35%
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:
Assenagon Asset Management S.A.
Vaughan Nelson Investment Management L.P.
SG Americas Securities LLC
Yorktown Management & Research Co Inc
Harbor Capital Advisors Inc.
Amalgamated Bank
BNC Wealth Management LLC
Cambridge Investment Research Advisors Inc.
During the previous year, company insiders that have sold Rambus company stock include:
Luc Seraphin (CEO)
Xianzhi Sean Fan (COO)
Desmond Lynch (CFO)
Emiko Higashi (Director)
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:
Schwartz Investment Counsel Inc.
Congress Asset Management Co.
GAMMA Investing LLC
Principal Financial Group Inc.
Lisanti Capital Growth LLC
Aspetuck Financial Management LLC
Mirae Asset Global Investments Co. Ltd.
Park Avenue Securities LLC